本指南提供操作說明，協助您從 Landsat Collection 1 切換至 Collection 2 資料。自 2022 年起，Earth Engine 已全面提供 Collection 2 資料，且 USGS 自 2021 年 12 月 31 日起不再製作 Collection 1 資料。Landsat Collection 1 已淘汰，建議所有使用者盡快遷移至 Collection 2。
每個 Landsat Collection 都代表以一致方法和常式處理的影像封存版本。隨著系統和處理演算法的改良，系統會產生新的集合。2020 年，USGS 開始將封存資料重新處理為第 2 代集合。如要瞭解集合處理模型背後的原理，以及第 2 集合提供的內容和進展，請參閱《Remote Sensing of Environment》中的「The 50-year Landsat collection 2 archive」一文。
下列各節說明從第 1 集到第 2 集，各項 Landsat 資料產品 (包括影像和集合 ID、波段名稱、新波段、波段值縮放比例和位元遮罩值) 的遷移作業所需變更。各節中的內容分頁會提供特定感應器的詳細資料。
表面反射率
OLI
資產 ID
在圖片和集合 ID 中，將 C01 替換為 C02，並將 SR 替換為 L2。舉例來說，Landsat 8 OLI Tier 1
(Landsat 9 OLI-2 未納入 Collection 1)：
| Collection 1 | Collection 2 |
|---|---|
| LANDSAT/LC08/C01/T1_SR | LANDSAT/LC08/C02/T1_L2 |
樂團名稱
展開即可查看樂團名稱變更和新增樂團
| 說明 | 集合 1 名稱 | 集合 2 名稱 |
|---|---|---|
| 湛藍 | B1 | SR_B1 |
| 藍色 | B2 | SR_B2 |
| 綠色 | B3 | SR_B3 |
| 紅色 | B4 | SR_B4 |
| 近紅外線 | B5 | SR_B5 |
| 短波紅外線 1 | B6 | SR_B6 |
| 短波紅外線 2 | B7 | SR_B7 |
| 亮度溫度 1 | B10 | |
| 亮度溫度 2 | B11 | |
| 噴霧屬性 | sr_aerosol | SR_QA_AEROSOL |
| 表面溫度 | ST_B10 | |
| 大氣透射率 | ST_ATRAN | |
| 像素與雲端的距離 | ST_CDIST | |
| 下行輻射 | ST_DRAD | |
| 發射率 | ST_EMIS | |
| 發射率標準差 | ST_EMSD | |
| 地表溫度不確定度 | ST_QA | |
| 熱輻射 | ST_TRAD | |
| 上湧輻射 | ST_URAD | |
| Pixel 品質屬性 (CFMask) | pixel_qa | QA_PIXEL |
| 放射飽和度品質保證 | radsat_qa | QA_RADSAT |
更新程式碼，選取名稱已變更的波段，例如近紅外線波段：
| Collection 1 | Collection 2 |
|---|---|
image.select('B5') |
image.select('SR_B5') |
價值調整比例
反射率波段有新的縮放比例因子。集合 1 使用 0.0001 縮放比例係數。集合 2 使用 2.75e-05 比例因數和 -0.2 偏移量。
熱感應帶也新增了比例和偏移因素。下列程式碼區塊定義的函式會套用 Collection 2 地表反射率和溫度波段縮放比例因子，並將其對應至圖像集合。
程式碼編輯器 (JavaScript)
var applyScaleFactors = function(image) { var opticalBands = image.select('SR_B.').multiply(0.0000275).add(-0.2); var thermalBand = image.select('ST_B10').multiply(0.00341802).add(149.0); return image.addBands(opticalBands, null, true) .addBands(thermalBand, null, true); } var srColScaled = srCol.map(applyScaleFactors)
Colab (Python)
def apply_scale_factors(image): optical_bands = image.select('SR_B.').multiply(0.0000275).add(-0.2) thermal_band = image.select('ST_B6').multiply(0.00341802).add(149.0) return image.addBands(optical_bands, None, True).addBands( thermal_band, None, True ) sr_col_scaled = sr_col.map(apply_scale_factors)
品質確保遮蓋
QA 位元遮罩 (CFMASK) 的位元代碼已變更。 請參閱目錄項目的「Bitmask for QA_PIXEL」(Collection 2) 和「Bitmask for pixel_qa」(Collection 1) 區段。
下列運算式會使用 Collection 2 QA 位元遮罩程式碼，為指定圖片建立雲朵和陰影遮罩。
程式碼編輯器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11111', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11111', 2)).eq(0)
放射飽和度
輻射飽和度位元遮罩的位元碼已變更。 如需代碼，請參閱目錄項目的「Bitmask for QA_RADSAT」(第 2 集) 和「Bitmask for radsat_qa」(第 1 集) 部分。
圖片屬性
在從集合 1 轉換至集合 2 的過程中，系統會新增一些圖片屬性，並移除一些屬性。太陽能幾何圖形的屬性已變更。請參閱下方的屬性比較表，判斷是否需要修改程式碼，以因應屬性缺漏、新增或變更 (例如在篩選或處理程序中)。如需 Collection 2 屬性說明，請參閱產品目錄頁面中的「圖片屬性」分頁標籤。
展開即可比較房源清單
| Collection 1 | Collection 2 |
|---|---|
| ALGORITHM_SOURCE_SURFACE_REFLECTANCE | |
| ALGORITHM_SOURCE_SURFACE_TEMPERATURE | |
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | |
| COLLECTION_NUMBER | |
| DATA_SOURCE_AIR_TEMPERATURE | |
| DATA_SOURCE_ELEVATION | |
| DATA_SOURCE_OZONE | |
| DATA_SOURCE_PRESSURE | |
| DATA_SOURCE_REANALYSIS | |
| DATA_SOURCE_TIRS_STRAY_LIGHT_CORRECTION | |
| DATA_SOURCE_WATER_VAPOR | |
| DATE_ACQUIRED | |
| DATE_PRODUCT_GENERATED | |
| DATUM | |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELLIPSOID | |
| ESPA_VERSION | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | |
| GRID_CELL_SIZE_REFLECTIVE | |
| GRID_CELL_SIZE_THERMAL | |
| GROUND_CONTROL_POINTS_MODEL | |
| GROUND_CONTROL_POINTS_VERIFY | |
| GROUND_CONTROL_POINTS_VERSION | |
| IMAGE_QUALITY_OLI | IMAGE_QUALITY_OLI |
| IMAGE_QUALITY_TIRS | IMAGE_QUALITY_TIRS |
| L1_DATE_PRODUCT_GENERATED | |
| L1_LANDSAT_PRODUCT_ID | |
| L1_PROCESSING_LEVEL | |
| L1_PROCESSING_SOFTWARE_VERSION | |
| L1_REQUEST_ID | |
| LANDSAT_ID | |
| LANDSAT_PRODUCT_ID | |
| LANDSAT_SCENE_ID | |
| LEVEL1_PRODUCTION_DATE | |
| MAP_PROJECTION | |
| NADIR_OFFNADIR | |
| 方向 | |
| PIXEL_QA_VERSION | |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | |
| REFLECTANCE_ADD_BAND_1 | |
| REFLECTANCE_ADD_BAND_2 | |
| REFLECTANCE_ADD_BAND_3 | |
| REFLECTANCE_ADD_BAND_4 | |
| REFLECTANCE_ADD_BAND_5 | |
| REFLECTANCE_ADD_BAND_6 | |
| REFLECTANCE_ADD_BAND_7 | |
| REFLECTANCE_MULT_BAND_1 | |
| REFLECTANCE_MULT_BAND_2 | |
| REFLECTANCE_MULT_BAND_3 | |
| REFLECTANCE_MULT_BAND_4 | |
| REFLECTANCE_MULT_BAND_5 | |
| REFLECTANCE_MULT_BAND_6 | |
| REFLECTANCE_MULT_BAND_7 | |
| REFLECTIVE_LINES | |
| REFLECTIVE_SAMPLES | |
| REQUEST_ID | |
| ROLL_ANGLE | |
| 衛星 | |
| SATURATION_BAND_1 | |
| SATURATION_BAND_2 | |
| SATURATION_BAND_3 | |
| SATURATION_BAND_4 | |
| SATURATION_BAND_5 | |
| SATURATION_BAND_6 | |
| SATURATION_BAND_7 | |
| SATURATION_BAND_8 | |
| SATURATION_BAND_9 | |
| SCENE_CENTER_TIME | |
| SENSING_TIME | |
| SENSOR_ID | |
| SPACECRAFT_ID | |
| STATION_ID | |
| SOLAR_AZIMUTH_ANGLE | SUN_AZIMUTH |
| SOLAR_ZENITH_ANGLE | SUN_ELEVATION (第 2 代使用仰角，而非天頂角。如要計算天頂角，請使用 90 - elevation。) |
| SR_APP_VERSION | |
| TARGET_WRS_PATH | |
| TARGET_WRS_ROW | |
| TEMPERATURE_ADD_BAND_ST_B10 | |
| TEMPERATURE_MAXIMUM_BAND_ST_B10 | |
| TEMPERATURE_MINIMUM_BAND_ST_B10 | |
| TEMPERATURE_MULT_BAND_ST_B10 | |
| THERMAL_LINES | |
| THERMAL_SAMPLES | |
| TIRS_SSM_MODEL | |
| TIRS_SSM_POSITION_STATUS | |
| TRUNCATION_OLI | |
| UTM_ZONE | |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE |
ETM+
資產 ID
在圖片和集合 ID 中，將 C01 替換為 C02，並將 SR 替換為 L2。舉例來說，Landsat 7 ETM+ 第 1 級：
| Collection 1 | Collection 2 |
|---|---|
| LANDSAT/LE07/C01/T1_SR | LANDSAT/LE07/C02/T1_L2 |
樂團名稱
請注意樂團名稱的變更和新樂團的加入。
展開即可查看樂團名稱變更和新增樂團
| 說明 | 集合 1 名稱 | 集合 2 名稱 |
|---|---|---|
| 藍色 | B1 | SR_B1 |
| 綠色 | B2 | SR_B2 |
| 紅色 | B3 | SR_B3 |
| 近紅外線 | B4 | SR_B4 |
| 短波紅外線 1 | B5 | SR_B5 |
| 大氣層頂端亮度溫度 | B6 | |
| 短波紅外線 2 | B7 | SR_B7 |
| 大氣不透明度 | sr_atmos_opacity | SR_ATMOS_OPACITY |
| 雲端品質評估 | sr_cloud_qa | SR_CLOUD_QA |
| 表面溫度 | ST_B6 | |
| 大氣透射率 | ST_ATRAN | |
| 像素與雲端的距離 | ST_CDIST | |
| 下行輻射 | ST_DRAD | |
| 發射率 | ST_EMIS | |
| 發射率標準差 | ST_EMSD | |
| 地表溫度不確定度 | ST_QA | |
| 熱輻射 | ST_TRAD | |
| 上湧輻射 | ST_URAD | |
| Pixel 品質屬性 (CFMask) | pixel_qa | QA_PIXEL |
| 放射飽和度品質保證 | radsat_qa | QA_RADSAT |
更新程式碼，選取名稱已變更的波段，例如近紅外線波段：
| Collection 1 | Collection 2 |
|---|---|
image.select('B4') |
image.select('SR_B4') |
價值調整比例
反射率波段有新的縮放比例因子。集合 1 使用 0.0001 縮放比例係數。集合 2 使用 2.75e-05 比例因數和 -0.2 偏移量。
熱感應帶也新增了比例和偏移因素。下列程式碼區塊定義的函式會套用 Collection 2 地表反射率和溫度波段縮放比例因子，並將其對應至圖像集合。
程式碼編輯器 (JavaScript)
var applyScaleFactors = function(image) { var opticalBands = image.select('SR_B.').multiply(0.0000275).add(-0.2); var thermalBand = image.select('ST_B6').multiply(0.00341802).add(149.0); return image.addBands(opticalBands, null, true) .addBands(thermalBand, null, true); } var srColScaled = srCol.map(applyScaleFactors)
Colab (Python)
def apply_scale_factors(image): optical_bands = image.select('SR_B.').multiply(0.0000275).add(-0.2) thermal_band = image.select('ST_B6').multiply(0.00341802).add(149.0) return image.addBands(optical_bands, None, True).addBands( thermal_band, None, True ) sr_col_scaled = sr_col.map(apply_scale_factors)
品質確保遮蓋
QA 位元遮罩 (CFMASK) 的位元代碼已變更。 請參閱目錄項目的「Bitmask for QA_PIXEL」(Collection 2) 和「Bitmask for pixel_qa」(Collection 1) 區段。
下列運算式會使用 Collection 2 QA 位元遮罩程式碼，為指定圖片建立雲朵和陰影遮罩。
程式碼編輯器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11111', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11111', 2)).eq(0)
放射飽和度
輻射飽和度位元遮罩的位元碼已變更。 如需代碼，請參閱目錄項目的「Bitmask for QA_RADSAT」(第 2 集) 和「Bitmask for radsat_qa」(第 1 集) 部分。
圖片屬性
在從集合 1 轉換至集合 2 的過程中，系統會新增一些圖片屬性，並移除一些屬性。太陽能幾何圖形的屬性已變更。請參閱下方的屬性比較表，判斷是否需要修改程式碼，以因應屬性缺漏、新增或變更 (例如在篩選或處理程序中)。如需 Collection 2 屬性說明，請參閱產品目錄頁面中的「圖片屬性」分頁標籤。
展開即可比較房源清單
| Collection 1 | Collection 2 |
|---|---|
| ALGORITHM_SOURCE_SURFACE_REFLECTANCE | |
| ALGORITHM_SOURCE_SURFACE_TEMPERATURE | |
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | |
| COLLECTION_NUMBER | |
| CORRECTION_BIAS_BAND_1 | |
| CORRECTION_BIAS_BAND_2 | |
| CORRECTION_BIAS_BAND_3 | |
| CORRECTION_BIAS_BAND_4 | |
| CORRECTION_BIAS_BAND_5 | |
| CORRECTION_BIAS_BAND_6_VCID_1 | |
| CORRECTION_BIAS_BAND_6_VCID_2 | |
| CORRECTION_BIAS_BAND_7 | |
| CORRECTION_BIAS_BAND_8 | |
| CORRECTION_GAIN_BAND_1 | |
| CORRECTION_GAIN_BAND_2 | |
| CORRECTION_GAIN_BAND_3 | |
| CORRECTION_GAIN_BAND_4 | |
| CORRECTION_GAIN_BAND_5 | |
| CORRECTION_GAIN_BAND_6_VCID_1 | |
| CORRECTION_GAIN_BAND_6_VCID_2 | |
| CORRECTION_GAIN_BAND_7 | |
| CORRECTION_GAIN_BAND_8 | |
| DATA_SOURCE_AIR_TEMPERATURE | |
| DATA_SOURCE_ELEVATION | |
| DATA_SOURCE_OZONE | |
| DATA_SOURCE_PRESSURE | |
| DATA_SOURCE_REANALYSIS | |
| DATA_SOURCE_WATER_VAPOR | |
| DATE_ACQUIRED | |
| DATE_PRODUCT_GENERATED | |
| DATUM | |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELLIPSOID | |
| EPHEMERIS_TYPE | |
| ESPA_VERSION | |
| GAIN_BAND_1 | |
| GAIN_BAND_2 | |
| GAIN_BAND_3 | |
| GAIN_BAND_4 | |
| GAIN_BAND_5 | |
| GAIN_BAND_6_VCID_1 | |
| GAIN_BAND_6_VCID_2 | |
| GAIN_BAND_7 | |
| GAIN_BAND_8 | |
| GAIN_CHANGE_BAND_1 | |
| GAIN_CHANGE_BAND_2 | |
| GAIN_CHANGE_BAND_3 | |
| GAIN_CHANGE_BAND_4 | |
| GAIN_CHANGE_BAND_5 | |
| GAIN_CHANGE_BAND_6_VCID_1 | |
| GAIN_CHANGE_BAND_6_VCID_2 | |
| GAIN_CHANGE_BAND_7 | |
| GAIN_CHANGE_BAND_8 | |
| GAIN_CHANGE_SCAN_BAND_1 | |
| GAIN_CHANGE_SCAN_BAND_2 | |
| GAIN_CHANGE_SCAN_BAND_3 | |
| GAIN_CHANGE_SCAN_BAND_4 | |
| GAIN_CHANGE_SCAN_BAND_5 | |
| GAIN_CHANGE_SCAN_BAND_6_VCID_1 | |
| GAIN_CHANGE_SCAN_BAND_6_VCID_2 | |
| GAIN_CHANGE_SCAN_BAND_7 | |
| GAIN_CHANGE_SCAN_BAND_8 | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GRID_CELL_SIZE_REFLECTIVE | |
| GRID_CELL_SIZE_THERMAL | |
| GROUND_CONTROL_POINTS_MODEL | |
| GROUND_CONTROL_POINTS_VERSION | |
| IMAGE_QUALITY | IMAGE_QUALITY |
| L1_DATE_PRODUCT_GENERATED | |
| L1_LANDSAT_PRODUCT_ID | |
| L1_PROCESSING_LEVEL | |
| L1_PROCESSING_SOFTWARE_VERSION | |
| L1_REQUEST_ID | |
| LANDSAT_ID | |
| LANDSAT_PRODUCT_ID | |
| LANDSAT_SCENE_ID | |
| LEVEL1_PRODUCTION_DATE | |
| MAP_PROJECTION | |
| 方向 | |
| PIXEL_QA_VERSION | |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | |
| REFLECTANCE_ADD_BAND_1 | |
| REFLECTANCE_ADD_BAND_2 | |
| REFLECTANCE_ADD_BAND_3 | |
| REFLECTANCE_ADD_BAND_4 | |
| REFLECTANCE_ADD_BAND_5 | |
| REFLECTANCE_ADD_BAND_7 | |
| REFLECTANCE_MULT_BAND_1 | |
| REFLECTANCE_MULT_BAND_2 | |
| REFLECTANCE_MULT_BAND_3 | |
| REFLECTANCE_MULT_BAND_4 | |
| REFLECTANCE_MULT_BAND_5 | |
| REFLECTANCE_MULT_BAND_7 | |
| REFLECTIVE_LINES | |
| REFLECTIVE_SAMPLES | |
| REQUEST_ID | |
| 衛星 | |
| SATURATION_BAND_1 | |
| SATURATION_BAND_2 | |
| SATURATION_BAND_3 | |
| SATURATION_BAND_4 | |
| SATURATION_BAND_5 | |
| SATURATION_BAND_6_VCID_1 | |
| SATURATION_BAND_6_VCID_2 | |
| SATURATION_BAND_7 | |
| SATURATION_BAND_8 | |
| SCENE_CENTER_TIME | |
| SENSING_TIME | |
| SENSOR_ANOMALIES | |
| SENSOR_ID | |
| SENSOR_MODE | |
| SENSOR_MODE_SLC | |
| SPACECRAFT_ID | |
| STATION_ID | |
| SOLAR_AZIMUTH_ANGLE | SUN_AZIMUTH |
| SOLAR_ZENITH_ANGLE | SUN_ELEVATION (第 2 代使用仰角，而非天頂角。如要計算天頂角，請使用 90 - elevation。) |
| SR_APP_VERSION | |
| TEMPERATURE_ADD_BAND_ST_B6 | |
| TEMPERATURE_MAXIMUM_BAND_ST_B6 | |
| TEMPERATURE_MINIMUM_BAND_ST_B6 | |
| TEMPERATURE_MULT_BAND_ST_B6 | |
| THERMAL_LINES | |
| THERMAL_SAMPLES | |
| UTM_ZONE | |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE |
TM
資產 ID
在圖片和集合 ID 中，將 C01 替換為 C02，並將 SR 替換為 L2。舉例來說，Landsat 5 TM Tier 1：
| Collection 1 | Collection 2 |
|---|---|
| LANDSAT/LT05/C01/T1_SR | LANDSAT/LT05/C02/T1_L2 |
樂團名稱
請注意樂團名稱的變更和新樂團的加入。
展開即可查看樂團名稱變更和新增樂團
| 說明 | 集合 1 名稱 | 集合 2 名稱 |
|---|---|---|
| 藍色 | B1 | SR_B1 |
| 綠色 | B2 | SR_B2 |
| 紅色 | B3 | SR_B3 |
| 近紅外線 | B4 | SR_B4 |
| 短波紅外線 1 | B5 | SR_B5 |
| 大氣層頂端亮度溫度 | B6 | |
| 短波紅外線 2 | B7 | SR_B7 |
| 大氣不透明度 | sr_atmos_opacity | SR_ATMOS_OPACITY |
| 雲端品質評估 | sr_cloud_qa | SR_CLOUD_QA |
| 表面溫度 | ST_B6 | |
| 大氣透射率 | ST_ATRAN | |
| 像素與雲端的距離 | ST_CDIST | |
| 下行輻射 | ST_DRAD | |
| 發射率 | ST_EMIS | |
| 發射率標準差 | ST_EMSD | |
| 地表溫度不確定度 | ST_QA | |
| 熱輻射 | ST_TRAD | |
| 上湧輻射 | ST_URAD | |
| Pixel 品質屬性 (CFMask) | pixel_qa | QA_PIXEL |
| 放射飽和度品質保證 | radsat_qa | QA_RADSAT |
更新程式碼，選取名稱已變更的波段，例如近紅外線波段：
| Collection 1 | Collection 2 |
|---|---|
image.select('B4') |
image.select('SR_B4') |
價值調整比例
反射率波段有新的縮放比例因子。集合 1 使用 0.0001 縮放比例係數。集合 2 使用 2.75e-05 比例因數和 -0.2 偏移量。
熱感應帶也新增了比例和偏移因素。下列程式碼區塊定義的函式會套用 Collection 2 地表反射率和溫度波段縮放比例因子，並將其對應至圖像集合。
程式碼編輯器 (JavaScript)
var applyScaleFactors = function(image) { var opticalBands = image.select('SR_B.').multiply(0.0000275).add(-0.2); var thermalBand = image.select('ST_B6').multiply(0.00341802).add(149.0); return image.addBands(opticalBands, null, true) .addBands(thermalBand, null, true); } var srColScaled = srCol.map(applyScaleFactors)
Colab (Python)
def apply_scale_factors(image): optical_bands = image.select('SR_B.').multiply(0.0000275).add(-0.2) thermal_band = image.select('ST_B6').multiply(0.00341802).add(149.0) return image.addBands(optical_bands, None, True).addBands( thermal_band, None, True ) sr_col_scaled = sr_col.map(apply_scale_factors)
品質確保遮蓋
QA 位元遮罩 (CFMASK) 的位元代碼已變更。 請參閱目錄項目的「Bitmask for QA_PIXEL」(Collection 2) 和「Bitmask for pixel_qa」(Collection 1) 區段，瞭解代碼 (例如 TM 5)。
下列運算式會使用 Collection 2 QA 位元遮罩程式碼，為指定圖片建立雲朵和陰影遮罩。
程式碼編輯器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11111', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11111', 2)).eq(0)
放射飽和度
輻射飽和度位元遮罩的位元碼已變更。 如需代碼 (例如 TM 5) 的詳細資訊，請參閱目錄項目的「Bitmask for QA_RADSAT」(第 2 集) 和「Bitmask for radsat_qa」(第 1 集) 部分。
圖片屬性
在從集合 1 轉換至集合 2 的過程中，系統會新增一些圖片屬性，並移除一些屬性。太陽能幾何圖形的屬性已變更。請參閱下方的屬性比較表，判斷是否需要修改程式碼，以因應屬性缺漏、新增或變更 (例如在篩選或處理程序中)。如需 Collection 2 屬性說明 (例如 TM 5)，請參閱產品目錄頁面中的「圖片屬性」分頁標籤。
展開即可比較房源清單
| Collection 1 | Collection 2 |
|---|---|
| ALGORITHM_SOURCE_SURFACE_REFLECTANCE | |
| ALGORITHM_SOURCE_SURFACE_TEMPERATURE | |
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | |
| COLLECTION_NUMBER | |
| CORRECTION_BIAS_BAND_1 | |
| CORRECTION_BIAS_BAND_2 | |
| CORRECTION_BIAS_BAND_3 | |
| CORRECTION_BIAS_BAND_4 | |
| CORRECTION_BIAS_BAND_5 | |
| CORRECTION_BIAS_BAND_6 | |
| CORRECTION_BIAS_BAND_7 | |
| CORRECTION_GAIN_BAND_1 | |
| CORRECTION_GAIN_BAND_2 | |
| CORRECTION_GAIN_BAND_3 | |
| CORRECTION_GAIN_BAND_4 | |
| CORRECTION_GAIN_BAND_5 | |
| CORRECTION_GAIN_BAND_6 | |
| CORRECTION_GAIN_BAND_7 | |
| DATA_SOURCE_AIR_TEMPERATURE | |
| DATA_SOURCE_ELEVATION | |
| DATA_SOURCE_OZONE | |
| DATA_SOURCE_PRESSURE | |
| DATA_SOURCE_REANALYSIS | |
| DATA_SOURCE_WATER_VAPOR | |
| DATA_TYPE_L0RP | |
| DATE_ACQUIRED | |
| DATE_PRODUCT_GENERATED | |
| DATUM | |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELLIPSOID | |
| EPHEMERIS_TYPE | |
| ESPA_VERSION | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | |
| GEOMETRIC_RMSE_VERIFY_QUAD_LL | |
| GEOMETRIC_RMSE_VERIFY_QUAD_LR | |
| GEOMETRIC_RMSE_VERIFY_QUAD_UL | |
| GEOMETRIC_RMSE_VERIFY_QUAD_UR | |
| GRID_CELL_SIZE_REFLECTIVE | |
| GRID_CELL_SIZE_THERMAL | |
| GROUND_CONTROL_POINTS_MODEL | |
| GROUND_CONTROL_POINTS_VERIFY | |
| GROUND_CONTROL_POINTS_VERSION | |
| IMAGE_QUALITY | IMAGE_QUALITY |
| L1_DATE_PRODUCT_GENERATED | |
| L1_LANDSAT_PRODUCT_ID | |
| L1_PROCESSING_LEVEL | |
| L1_PROCESSING_SOFTWARE_VERSION | |
| L1_REQUEST_ID | |
| LANDSAT_ID | |
| LANDSAT_PRODUCT_ID | |
| LANDSAT_SCENE_ID | |
| LEVEL1_PRODUCTION_DATE | |
| MAP_PROJECTION | |
| 方向 | |
| PIXEL_QA_VERSION | |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | |
| REFLECTANCE_ADD_BAND_1 | |
| REFLECTANCE_ADD_BAND_2 | |
| REFLECTANCE_ADD_BAND_3 | |
| REFLECTANCE_ADD_BAND_4 | |
| REFLECTANCE_ADD_BAND_5 | |
| REFLECTANCE_ADD_BAND_7 | |
| REFLECTANCE_MULT_BAND_1 | |
| REFLECTANCE_MULT_BAND_2 | |
| REFLECTANCE_MULT_BAND_3 | |
| REFLECTANCE_MULT_BAND_4 | |
| REFLECTANCE_MULT_BAND_5 | |
| REFLECTANCE_MULT_BAND_7 | |
| REFLECTIVE_LINES | |
| REFLECTIVE_SAMPLES | |
| REQUEST_ID | |
| 衛星 | |
| SATURATION_BAND_1 | |
| SATURATION_BAND_2 | |
| SATURATION_BAND_3 | |
| SATURATION_BAND_4 | |
| SATURATION_BAND_5 | |
| SATURATION_BAND_6 | |
| SATURATION_BAND_7 | |
| SCENE_CENTER_TIME | |
| SENSING_TIME | |
| SENSOR_ANOMALIES | |
| SENSOR_ID | |
| SENSOR_MODE | |
| SENSOR_MODE_SLC | |
| SPACECRAFT_ID | |
| STATION_ID | |
| SOLAR_AZIMUTH_ANGLE | SUN_AZIMUTH |
| SOLAR_ZENITH_ANGLE | SUN_ELEVATION (第 2 代使用仰角，而非天頂角。如要計算天頂角，請使用 90 - elevation。) |
| SR_APP_VERSION | |
| TEMPERATURE_ADD_BAND_ST_B6 | |
| TEMPERATURE_MAXIMUM_BAND_ST_B6 | |
| TEMPERATURE_MINIMUM_BAND_ST_B6 | |
| TEMPERATURE_MULT_BAND_ST_B6 | |
| THERMAL_LINES | |
| THERMAL_SAMPLES | |
| UTM_ZONE | |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE |
大氣層頂端反射率
OLI
資產 ID
將圖片和集合 ID 中的 C01 替換為 C02。舉例來說，Landsat 8 OLI Tier 1
(Landsat 9 OLI-2 未納入 Collection 1)：
| Collection 1 | Collection 2 |
|---|---|
| LANDSAT/LC08/C01/T1_TOA | LANDSAT/LC08/C02/T1_TOA |
樂團名稱
請注意樂團名稱的變更和新樂團的加入。
展開即可查看樂團名稱變更和新增樂團
| 說明 | 集合 1 名稱 | 集合 2 名稱 |
|---|---|---|
| 沿海氣膠 | B1 | B1 |
| 藍色 | B2 | B2 |
| 綠色 | B3 | B3 |
| 紅色 | B4 | B4 |
| 近紅外線 | B5 | B5 |
| 短波紅外線 1 | B6 | B6 |
| 短波紅外線 2 | B7 | B7 |
| Panchromatic | B8 | B8 |
| 卷雲 | B9 | B9 |
| 熱紅外線 1 | B10 | B10 |
| 熱紅外線 2 | B11 | B11 |
| 品質確保位元遮罩 | BQA | QA_PIXEL |
| 放射飽和度品質保證 | QA_RADSAT | |
| 太陽方位角 | SAA | |
| 太陽天頂角 | SZA | |
| 查看方位角 | VAA | |
| 查看天頂角 | VZA |
更新程式碼，選取名稱已變更的波段，例如 QA 位元遮罩波段：
| Collection 1 | Collection 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
價值調整比例
不需要修改。集合 1 和集合 2 的大氣層頂端反射率和熱值縮放比例相同。
品質確保遮蓋
QA 位元遮罩的位元代碼已變更。 請參閱目錄項目中「Bitmask for QA_PIXEL」(集合 2) 和「Bitmask for BQA」(集合 1) 部分的代碼。
下列運算式會使用 Collection 2 QA 位元遮罩程式碼，為指定圖片建立雲朵和陰影遮罩。
程式碼編輯器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
圖片屬性
在從集合 1 轉換至集合 2 的過程中，系統會新增一些圖片屬性，並移除一些屬性。沒有任何房源名稱變更。請參閱下列屬性比較表，判斷是否需要修改程式碼，以因應缺少或新增的屬性 (例如在篩選或處理時)。如需 Collection 2 屬性說明，請參閱產品目錄頁面中的「圖片屬性」分頁標籤。
展開即可比較房源清單
| Collection 1 | Collection 2 |
|---|---|
| BPF_NAME_OLI | |
| BPF_NAME_TIRS | |
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CPF_NAME | |
| DATA_SOURCE_ELEVATION | |
| DATA_SOURCE_TIRS_STRAY_LIGHT_CORRECTION | |
| DATA_TYPE | |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| FILE_DATE | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
| GRID_CELL_SIZE_PANCHROMATIC | GRID_CELL_SIZE_PANCHROMATIC |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY_OLI | IMAGE_QUALITY_OLI |
| IMAGE_QUALITY_TIRS | IMAGE_QUALITY_TIRS |
| K1_CONSTANT_BAND_10 | K1_CONSTANT_BAND_10 |
| K1_CONSTANT_BAND_11 | K1_CONSTANT_BAND_11 |
| K2_CONSTANT_BAND_10 | K2_CONSTANT_BAND_10 |
| K2_CONSTANT_BAND_11 | K2_CONSTANT_BAND_11 |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| NADIR_OFFNADIR | NADIR_OFFNADIR |
| 方向 | 方向 |
| PANCHROMATIC_LINES | PANCHROMATIC_LINES |
| PANCHROMATIC_SAMPLES | PANCHROMATIC_SAMPLES |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
| RADIANCE_ADD_BAND_10 | RADIANCE_ADD_BAND_10 |
| RADIANCE_ADD_BAND_11 | RADIANCE_ADD_BAND_11 |
| RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
| RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_ADD_BAND_8 | RADIANCE_ADD_BAND_8 |
| RADIANCE_ADD_BAND_9 | RADIANCE_ADD_BAND_9 |
| RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
| RADIANCE_MULT_BAND_10 | RADIANCE_MULT_BAND_10 |
| RADIANCE_MULT_BAND_11 | RADIANCE_MULT_BAND_11 |
| RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
| RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| RADIANCE_MULT_BAND_8 | RADIANCE_MULT_BAND_8 |
| RADIANCE_MULT_BAND_9 | RADIANCE_MULT_BAND_9 |
| REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
| REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
| REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_6 | REFLECTANCE_ADD_BAND_6 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_ADD_BAND_8 | REFLECTANCE_ADD_BAND_8 |
| REFLECTANCE_ADD_BAND_9 | REFLECTANCE_ADD_BAND_9 |
| REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
| REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
| REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_6 | REFLECTANCE_MULT_BAND_6 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTANCE_MULT_BAND_8 | REFLECTANCE_MULT_BAND_8 |
| REFLECTANCE_MULT_BAND_9 | REFLECTANCE_MULT_BAND_9 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| RLUT_FILE_NAME | |
| ROLL_ANGLE | ROLL_ANGLE |
| SATURATION_BAND_1 | SATURATION_BAND_1 |
| SATURATION_BAND_2 | SATURATION_BAND_2 |
| SATURATION_BAND_3 | SATURATION_BAND_3 |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6 | SATURATION_BAND_6 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SATURATION_BAND_8 | SATURATION_BAND_8 |
| SATURATION_BAND_9 | SATURATION_BAND_9 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ID | SENSOR_ID |
| SPACECRAFT_ID | SPACECRAFT_ID |
| STATION_ID | STATION_ID |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| TARGET_WRS_PATH | TARGET_WRS_PATH |
| TARGET_WRS_ROW | TARGET_WRS_ROW |
| THERMAL_LINES | THERMAL_LINES |
| THERMAL_SAMPLES | THERMAL_SAMPLES |
| TIRS_SSM_MODEL | TIRS_SSM_MODEL |
| TIRS_SSM_POSITION_STATUS | TIRS_SSM_POSITION_STATUS |
| TIRS_STRAY_LIGHT_CORRECTION_SOURCE | |
| TRUNCATION_OLI | TRUNCATION_OLI |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE | |
| google:registration_count | |
| google:registration_offset_x | |
| google:registration_offset_y | |
| google:registration_ratio |
ETM+
資產 ID
將圖片和集合 ID 中的 C01 替換為 C02。舉例來說，Landsat 7 ETM+ 第 1 級：
| Collection 1 | Collection 2 |
|---|---|
| LANDSAT/LE07/C01/T1_TOA | LANDSAT/LE07/C02/T1_TOA |
樂團名稱
請注意樂團名稱的變更和新樂團的加入。
展開即可查看樂團名稱變更和新增樂團
| 說明 | 集合 1 名稱 | 集合 2 名稱 |
|---|---|---|
| 藍色 | B1 | B1 |
| 綠色 | B2 | B2 |
| 紅色 | B3 | B3 |
| 近紅外線 | B4 | B4 |
| 短波紅外線 1 | B5 | B5 |
| 低增益熱紅外線 1 | B6_VCID_1 | B6_VCID_1 |
| 高增益熱紅外線 1 | B6_VCID_2 | B6_VCID_2 |
| 短波紅外線 2 | B7 | B7 |
| Panchromatic | B8 | B8 |
| 品質確保位元遮罩 | BQA | QA_PIXEL |
| 放射飽和度品質保證 | QA_RADSAT | |
| 太陽方位角 | SAA | |
| 太陽天頂角 | SZA | |
| 查看方位角 | VAA | |
| 查看天頂角 | VZA |
更新程式碼，選取名稱已變更的波段，例如 QA 位元遮罩波段：
| Collection 1 | Collection 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
價值調整比例
不需要修改。集合 1 和集合 2 的大氣層頂端反射率和熱值縮放比例相同。
品質確保遮蓋
QA 位元遮罩的位元代碼已變更。 請參閱目錄項目中「Bitmask for QA_PIXEL」(集合 2) 和「Bitmask for BQA」(集合 1) 部分的代碼。
下列運算式會使用 Collection 2 QA 位元遮罩程式碼，為指定圖片建立雲朵和陰影遮罩。
程式碼編輯器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
圖片屬性
在從集合 1 轉換至集合 2 的過程中，系統會新增一些圖片屬性，並移除一些屬性。沒有任何房源名稱變更。請參閱下列屬性比較表，判斷是否需要修改程式碼，以因應缺少或新增的屬性 (例如在篩選或處理時)。如需 Collection 2 屬性說明，請參閱產品目錄頁面中的「圖片屬性」分頁標籤。
展開即可比較房源清單
| Collection 1 | Collection 2 |
|---|---|
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CORRECTION_BIAS_BAND_1 | CORRECTION_BIAS_BAND_1 |
| CORRECTION_BIAS_BAND_2 | CORRECTION_BIAS_BAND_2 |
| CORRECTION_BIAS_BAND_3 | CORRECTION_BIAS_BAND_3 |
| CORRECTION_BIAS_BAND_4 | CORRECTION_BIAS_BAND_4 |
| CORRECTION_BIAS_BAND_5 | CORRECTION_BIAS_BAND_5 |
| CORRECTION_BIAS_BAND_6_VCID_1 | CORRECTION_BIAS_BAND_6_VCID_1 |
| CORRECTION_BIAS_BAND_6_VCID_2 | CORRECTION_BIAS_BAND_6_VCID_2 |
| CORRECTION_BIAS_BAND_7 | CORRECTION_BIAS_BAND_7 |
| CORRECTION_BIAS_BAND_8 | CORRECTION_BIAS_BAND_8 |
| CORRECTION_GAIN_BAND_1 | CORRECTION_GAIN_BAND_1 |
| CORRECTION_GAIN_BAND_2 | CORRECTION_GAIN_BAND_2 |
| CORRECTION_GAIN_BAND_3 | CORRECTION_GAIN_BAND_3 |
| CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
| CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
| CORRECTION_GAIN_BAND_6_VCID_1 | CORRECTION_GAIN_BAND_6_VCID_1 |
| CORRECTION_GAIN_BAND_6_VCID_2 | CORRECTION_GAIN_BAND_6_VCID_2 |
| CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
| CORRECTION_GAIN_BAND_8 | CORRECTION_GAIN_BAND_8 |
| CPF_NAME | |
| DATA_CATEGORY | |
| DATA_SOURCE_ELEVATION | |
| DATA_TYPE | |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| EPHEMERIS_TYPE | EPHEMERIS_TYPE |
| FILE_DATE | |
| GAIN_BAND_1 | GAIN_BAND_1 |
| GAIN_BAND_2 | GAIN_BAND_2 |
| GAIN_BAND_3 | GAIN_BAND_3 |
| GAIN_BAND_4 | GAIN_BAND_4 |
| GAIN_BAND_5 | GAIN_BAND_5 |
| GAIN_BAND_6_VCID_1 | GAIN_BAND_6_VCID_1 |
| GAIN_BAND_6_VCID_2 | GAIN_BAND_6_VCID_2 |
| GAIN_BAND_7 | GAIN_BAND_7 |
| GAIN_BAND_8 | GAIN_BAND_8 |
| GAIN_CHANGE_BAND_1 | GAIN_CHANGE_BAND_1 |
| GAIN_CHANGE_BAND_2 | GAIN_CHANGE_BAND_2 |
| GAIN_CHANGE_BAND_3 | GAIN_CHANGE_BAND_3 |
| GAIN_CHANGE_BAND_4 | GAIN_CHANGE_BAND_4 |
| GAIN_CHANGE_BAND_5 | GAIN_CHANGE_BAND_5 |
| GAIN_CHANGE_BAND_6_VCID_1 | GAIN_CHANGE_BAND_6_VCID_1 |
| GAIN_CHANGE_BAND_6_VCID_2 | GAIN_CHANGE_BAND_6_VCID_2 |
| GAIN_CHANGE_BAND_7 | GAIN_CHANGE_BAND_7 |
| GAIN_CHANGE_BAND_8 | GAIN_CHANGE_BAND_8 |
| GAIN_CHANGE_SCAN_BAND_1 | GAIN_CHANGE_SCAN_BAND_1 |
| GAIN_CHANGE_SCAN_BAND_2 | GAIN_CHANGE_SCAN_BAND_2 |
| GAIN_CHANGE_SCAN_BAND_3 | GAIN_CHANGE_SCAN_BAND_3 |
| GAIN_CHANGE_SCAN_BAND_4 | GAIN_CHANGE_SCAN_BAND_4 |
| GAIN_CHANGE_SCAN_BAND_5 | GAIN_CHANGE_SCAN_BAND_5 |
| GAIN_CHANGE_SCAN_BAND_6_VCID_1 | GAIN_CHANGE_SCAN_BAND_6_VCID_1 |
| GAIN_CHANGE_SCAN_BAND_6_VCID_2 | GAIN_CHANGE_SCAN_BAND_6_VCID_2 |
| GAIN_CHANGE_SCAN_BAND_7 | GAIN_CHANGE_SCAN_BAND_7 |
| GAIN_CHANGE_SCAN_BAND_8 | GAIN_CHANGE_SCAN_BAND_8 |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GRID_CELL_SIZE_PANCHROMATIC | GRID_CELL_SIZE_PANCHROMATIC |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY | IMAGE_QUALITY |
| K1_CONSTANT_BAND_6_VCID_1 | K1_CONSTANT_BAND_6_VCID_1 |
| K1_CONSTANT_BAND_6_VCID_2 | K1_CONSTANT_BAND_6_VCID_2 |
| K2_CONSTANT_BAND_6_VCID_1 | K2_CONSTANT_BAND_6_VCID_1 |
| K2_CONSTANT_BAND_6_VCID_2 | K2_CONSTANT_BAND_6_VCID_2 |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| 方向 | 方向 |
| PANCHROMATIC_LINES | PANCHROMATIC_LINES |
| PANCHROMATIC_SAMPLES | PANCHROMATIC_SAMPLES |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
| RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
| RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6_VCID_1 | RADIANCE_ADD_BAND_6_VCID_1 |
| RADIANCE_ADD_BAND_6_VCID_2 | RADIANCE_ADD_BAND_6_VCID_2 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_ADD_BAND_8 | RADIANCE_ADD_BAND_8 |
| RADIANCE_MAXIMUM_BAND_1 | |
| RADIANCE_MAXIMUM_BAND_2 | |
| RADIANCE_MAXIMUM_BAND_3 | |
| RADIANCE_MAXIMUM_BAND_4 | |
| RADIANCE_MAXIMUM_BAND_5 | |
| RADIANCE_MAXIMUM_BAND_6_VCID_1 | |
| RADIANCE_MAXIMUM_BAND_6_VCID_2 | |
| RADIANCE_MAXIMUM_BAND_7 | |
| RADIANCE_MAXIMUM_BAND_8 | |
| RADIANCE_MINIMUM_BAND_1 | |
| RADIANCE_MINIMUM_BAND_2 | |
| RADIANCE_MINIMUM_BAND_3 | |
| RADIANCE_MINIMUM_BAND_4 | |
| RADIANCE_MINIMUM_BAND_5 | |
| RADIANCE_MINIMUM_BAND_6_VCID_1 | |
| RADIANCE_MINIMUM_BAND_6_VCID_2 | |
| RADIANCE_MINIMUM_BAND_7 | |
| RADIANCE_MINIMUM_BAND_8 | |
| RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
| RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
| RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6_VCID_1 | RADIANCE_MULT_BAND_6_VCID_1 |
| RADIANCE_MULT_BAND_6_VCID_2 | RADIANCE_MULT_BAND_6_VCID_2 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| RADIANCE_MULT_BAND_8 | RADIANCE_MULT_BAND_8 |
| REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
| REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
| REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_ADD_BAND_8 | REFLECTANCE_ADD_BAND_8 |
| REFLECTANCE_MAXIMUM_BAND_1 | |
| REFLECTANCE_MAXIMUM_BAND_2 | |
| REFLECTANCE_MAXIMUM_BAND_3 | |
| REFLECTANCE_MAXIMUM_BAND_4 | |
| REFLECTANCE_MAXIMUM_BAND_5 | |
| REFLECTANCE_MAXIMUM_BAND_7 | |
| REFLECTANCE_MAXIMUM_BAND_8 | |
| REFLECTANCE_MINIMUM_BAND_1 | |
| REFLECTANCE_MINIMUM_BAND_2 | |
| REFLECTANCE_MINIMUM_BAND_3 | |
| REFLECTANCE_MINIMUM_BAND_4 | |
| REFLECTANCE_MINIMUM_BAND_5 | |
| REFLECTANCE_MINIMUM_BAND_7 | |
| REFLECTANCE_MINIMUM_BAND_8 | |
| REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
| REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
| REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTANCE_MULT_BAND_8 | REFLECTANCE_MULT_BAND_8 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| SATURATION_BAND_1 | SATURATION_BAND_1 |
| SATURATION_BAND_2 | SATURATION_BAND_2 |
| SATURATION_BAND_3 | SATURATION_BAND_3 |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6_VCID_1 | SATURATION_BAND_6_VCID_1 |
| SATURATION_BAND_6_VCID_2 | SATURATION_BAND_6_VCID_2 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SATURATION_BAND_8 | SATURATION_BAND_8 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ANOMALIES | |
| SENSOR_ID | SENSOR_ID |
| SENSOR_MODE | SENSOR_MODE |
| SENSOR_MODE_SLC | |
| SPACECRAFT_ID | SPACECRAFT_ID |
| STATION_ID | STATION_ID |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| THERMAL_LINES | THERMAL_LINES |
| THERMAL_SAMPLES | THERMAL_SAMPLES |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE | |
| google:registration_count | |
| google:registration_offset_x | |
| google:registration_offset_y | |
| google:registration_ratio |
TM
資產 ID
將圖片和集合 ID 中的 C01 替換為 C02。舉例來說，Landsat 5 TM Tier 1：
| Collection 1 | Collection 2 |
|---|---|
| LANDSAT/LT05/C01/T1_TOA | LANDSAT/LT05/C02/T1_TOA |
樂團名稱
請注意樂團名稱的變更和新樂團的加入。
展開即可查看樂團名稱變更和新增樂團
| 說明 | 集合 1 名稱 | 集合 2 名稱 |
|---|---|---|
| 藍色 | B1 | B1 |
| 綠色 | B2 | B2 |
| 紅色 | B3 | B3 |
| 近紅外線 | B4 | B4 |
| 短波紅外線 1 | B5 | B5 |
| 熱紅外線 1 | B6 | B6 |
| 短波紅外線 2 | B7 | B7 |
| 品質確保位元遮罩 | BQA | QA_PIXEL |
| 放射飽和度品質保證 | QA_RADSAT | |
| 太陽方位角 | SAA | |
| 太陽天頂角 | SZA | |
| 查看方位角 | VAA | |
| 查看天頂角 | VZA |
更新程式碼，選取名稱已變更的波段，例如 QA 位元遮罩波段：
| Collection 1 | Collection 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
價值調整比例
不需要修改。集合 1 和集合 2 的大氣層頂端反射率和熱值縮放比例相同。
品質確保遮蓋
QA 位元遮罩的位元代碼已變更。 請參閱目錄項目的「Bitmask for QA_PIXEL」(Collection 2) 和「Bitmask for BQA」(Collection 1) 部分，瞭解代碼 (例如 TM 5) 的位元遮罩。
下列運算式會使用 Collection 2 QA 位元遮罩程式碼，為指定圖片建立雲朵和陰影遮罩。
程式碼編輯器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
圖片屬性
在從集合 1 轉換至集合 2 的過程中，系統會新增一些圖片屬性，並移除一些屬性。沒有任何房源名稱變更。請參閱下列屬性比較表，判斷是否需要修改程式碼，以因應缺少或新增的屬性 (例如在篩選或處理時)。如需 Collection 2 屬性說明 (例如 TM 5)，請參閱產品目錄頁面中的「圖片屬性」分頁標籤。
展開即可比較房源清單
| Collection 1 | Collection 2 |
|---|---|
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CORNER_LL_LAT_PRODUCT | |
| CORNER_LL_LON_PRODUCT | |
| CORNER_LL_PROJECTION_X_PRODUCT | |
| CORNER_LL_PROJECTION_Y_PRODUCT | |
| CORNER_LR_LAT_PRODUCT | |
| CORNER_LR_LON_PRODUCT | |
| CORNER_LR_PROJECTION_X_PRODUCT | |
| CORNER_LR_PROJECTION_Y_PRODUCT | |
| CORNER_UL_LAT_PRODUCT | |
| CORNER_UL_LON_PRODUCT | |
| CORNER_UL_PROJECTION_X_PRODUCT | |
| CORNER_UL_PROJECTION_Y_PRODUCT | |
| CORNER_UR_LAT_PRODUCT | |
| CORNER_UR_LON_PRODUCT | |
| CORNER_UR_PROJECTION_X_PRODUCT | |
| CORNER_UR_PROJECTION_Y_PRODUCT | |
| CORRECTION_BIAS_BAND_1 | CORRECTION_BIAS_BAND_1 |
| CORRECTION_BIAS_BAND_2 | CORRECTION_BIAS_BAND_2 |
| CORRECTION_BIAS_BAND_3 | CORRECTION_BIAS_BAND_3 |
| CORRECTION_BIAS_BAND_4 | CORRECTION_BIAS_BAND_4 |
| CORRECTION_BIAS_BAND_5 | CORRECTION_BIAS_BAND_5 |
| CORRECTION_BIAS_BAND_6 | CORRECTION_BIAS_BAND_6 |
| CORRECTION_BIAS_BAND_7 | CORRECTION_BIAS_BAND_7 |
| CORRECTION_GAIN_BAND_1 | CORRECTION_GAIN_BAND_1 |
| CORRECTION_GAIN_BAND_2 | CORRECTION_GAIN_BAND_2 |
| CORRECTION_GAIN_BAND_3 | CORRECTION_GAIN_BAND_3 |
| CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
| CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
| CORRECTION_GAIN_BAND_6 | CORRECTION_GAIN_BAND_6 |
| CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
| CPF_NAME | |
| DATA_CATEGORY | |
| DATA_SOURCE_ELEVATION | |
| DATA_TYPE | |
| DATA_TYPE_L0RP | DATA_TYPE_L0RP |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| EPHEMERIS_TYPE | EPHEMERIS_TYPE |
| FILE_DATE | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
| GEOMETRIC_RMSE_VERIFY_QUAD_LL | GEOMETRIC_RMSE_VERIFY_QUAD_LL |
| GEOMETRIC_RMSE_VERIFY_QUAD_LR | GEOMETRIC_RMSE_VERIFY_QUAD_LR |
| GEOMETRIC_RMSE_VERIFY_QUAD_UL | GEOMETRIC_RMSE_VERIFY_QUAD_UL |
| GEOMETRIC_RMSE_VERIFY_QUAD_UR | GEOMETRIC_RMSE_VERIFY_QUAD_UR |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY | IMAGE_QUALITY |
| K1_CONSTANT_BAND_6 | K1_CONSTANT_BAND_6 |
| K2_CONSTANT_BAND_6 | K2_CONSTANT_BAND_6 |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| MAP_PROJECTION_L0RA | MAP_PROJECTION_L0RA |
| 方向 | 方向 |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
| RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
| RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_MAXIMUM_BAND_1 | |
| RADIANCE_MAXIMUM_BAND_2 | |
| RADIANCE_MAXIMUM_BAND_3 | |
| RADIANCE_MAXIMUM_BAND_4 | |
| RADIANCE_MAXIMUM_BAND_5 | |
| RADIANCE_MAXIMUM_BAND_6 | |
| RADIANCE_MAXIMUM_BAND_7 | |
| RADIANCE_MINIMUM_BAND_1 | |
| RADIANCE_MINIMUM_BAND_2 | |
| RADIANCE_MINIMUM_BAND_3 | |
| RADIANCE_MINIMUM_BAND_4 | |
| RADIANCE_MINIMUM_BAND_5 | |
| RADIANCE_MINIMUM_BAND_6 | |
| RADIANCE_MINIMUM_BAND_7 | |
| RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
| RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
| RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
| REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
| REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_MAXIMUM_BAND_1 | |
| REFLECTANCE_MAXIMUM_BAND_2 | |
| REFLECTANCE_MAXIMUM_BAND_3 | |
| REFLECTANCE_MAXIMUM_BAND_4 | |
| REFLECTANCE_MAXIMUM_BAND_5 | |
| REFLECTANCE_MAXIMUM_BAND_7 | |
| REFLECTANCE_MINIMUM_BAND_1 | |
| REFLECTANCE_MINIMUM_BAND_2 | |
| REFLECTANCE_MINIMUM_BAND_3 | |
| REFLECTANCE_MINIMUM_BAND_4 | |
| REFLECTANCE_MINIMUM_BAND_5 | |
| REFLECTANCE_MINIMUM_BAND_7 | |
| REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
| REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
| REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| SATURATION_BAND_1 | SATURATION_BAND_1 |
| SATURATION_BAND_2 | SATURATION_BAND_2 |
| SATURATION_BAND_3 | SATURATION_BAND_3 |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6 | SATURATION_BAND_6 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ANOMALIES | |
| SENSOR_ID | SENSOR_ID |
| SENSOR_MODE | SENSOR_MODE |
| SENSOR_MODE_SLC | |
| SPACECRAFT_ID | SPACECRAFT_ID |
| STATION_ID | STATION_ID |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| THERMAL_LINES | THERMAL_LINES |
| THERMAL_SAMPLES | THERMAL_SAMPLES |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE | |
| google:registration_count | |
| google:registration_offset_x | |
| google:registration_offset_y | |
| google:registration_ratio |
縮放輻射度 (DN)
OLI
資產 ID
將圖片和集合 ID 中的 C01 替換為 C02。舉例來說，Landsat 8 OLI Tier 1
(Landsat 9 OLI-2 未納入 Collection 1)：
| Collection 1 | Collection 2 |
|---|---|
| LANDSAT/LC08/C01/T1 | LANDSAT/LC08/C02/T1 |
樂團名稱
請注意樂團名稱的變更和新樂團的加入。
展開即可查看樂團名稱變更和新增樂團
| 說明 | 集合 1 名稱 | 集合 2 名稱 |
|---|---|---|
| 沿海氣膠 | B1 | B1 |
| 藍色 | B2 | B2 |
| 綠色 | B3 | B3 |
| 紅色 | B4 | B4 |
| 近紅外線 | B5 | B5 |
| 短波紅外線 1 | B6 | B6 |
| 短波紅外線 2 | B7 | B7 |
| Panchromatic | B8 | B8 |
| 卷雲 | B9 | B9 |
| 熱紅外線 1 | B10 | B10 |
| 熱紅外線 2 | B11 | B11 |
| 品質確保位元遮罩 | BQA | QA_PIXEL |
| 放射飽和度品質保證 | QA_RADSAT | |
| 太陽方位角 | SAA | |
| 太陽天頂角 | SZA | |
| 查看方位角 | VAA | |
| 查看天頂角 | VZA |
更新程式碼，選取名稱已變更的波段，例如 QA 位元遮罩波段：
| Collection 1 | Collection 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
價值調整比例
不需要修改。集合 1 和集合 2 的原始 DN 反射率和熱值縮放比例相同。
品質確保遮蓋
QA 位元遮罩的位元代碼已變更。 請參閱目錄項目中「Bitmask for QA_PIXEL」(集合 2) 和「Bitmask for BQA」(集合 1) 部分的代碼。
下列運算式會使用 Collection 2 QA 位元遮罩程式碼，為指定圖片建立雲朵和陰影遮罩。
程式碼編輯器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
圖片屬性
在從集合 1 轉換至集合 2 的過程中，系統會新增一些圖片屬性，並移除一些屬性。沒有任何房源名稱變更。請參閱下列屬性比較表，判斷是否需要修改程式碼，以因應缺少或新增的屬性 (例如在篩選或處理時)。如需 Collection 2 屬性說明，請參閱產品目錄頁面中的「圖片屬性」分頁標籤。
展開即可比較房源清單
| Collection 1 | Collection 2 |
|---|---|
| BPF_NAME_OLI | |
| BPF_NAME_TIRS | |
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CPF_NAME | |
| DATA_SOURCE_ELEVATION | |
| DATA_SOURCE_TIRS_STRAY_LIGHT_CORRECTION | |
| DATA_TYPE | |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| FILE_DATE | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
| GRID_CELL_SIZE_PANCHROMATIC | GRID_CELL_SIZE_PANCHROMATIC |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY_OLI | IMAGE_QUALITY_OLI |
| IMAGE_QUALITY_TIRS | IMAGE_QUALITY_TIRS |
| K1_CONSTANT_BAND_10 | K1_CONSTANT_BAND_10 |
| K1_CONSTANT_BAND_11 | K1_CONSTANT_BAND_11 |
| K2_CONSTANT_BAND_10 | K2_CONSTANT_BAND_10 |
| K2_CONSTANT_BAND_11 | K2_CONSTANT_BAND_11 |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| NADIR_OFFNADIR | NADIR_OFFNADIR |
| 方向 | 方向 |
| PANCHROMATIC_LINES | PANCHROMATIC_LINES |
| PANCHROMATIC_SAMPLES | PANCHROMATIC_SAMPLES |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
| RADIANCE_ADD_BAND_10 | RADIANCE_ADD_BAND_10 |
| RADIANCE_ADD_BAND_11 | RADIANCE_ADD_BAND_11 |
| RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
| RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_ADD_BAND_8 | RADIANCE_ADD_BAND_8 |
| RADIANCE_ADD_BAND_9 | RADIANCE_ADD_BAND_9 |
| RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
| RADIANCE_MULT_BAND_10 | RADIANCE_MULT_BAND_10 |
| RADIANCE_MULT_BAND_11 | RADIANCE_MULT_BAND_11 |
| RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
| RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| RADIANCE_MULT_BAND_8 | RADIANCE_MULT_BAND_8 |
| RADIANCE_MULT_BAND_9 | RADIANCE_MULT_BAND_9 |
| REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
| REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
| REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_6 | REFLECTANCE_ADD_BAND_6 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_ADD_BAND_8 | REFLECTANCE_ADD_BAND_8 |
| REFLECTANCE_ADD_BAND_9 | REFLECTANCE_ADD_BAND_9 |
| REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
| REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
| REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_6 | REFLECTANCE_MULT_BAND_6 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTANCE_MULT_BAND_8 | REFLECTANCE_MULT_BAND_8 |
| REFLECTANCE_MULT_BAND_9 | REFLECTANCE_MULT_BAND_9 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| RLUT_FILE_NAME | |
| ROLL_ANGLE | ROLL_ANGLE |
| SATURATION_BAND_1 | SATURATION_BAND_1 |
| SATURATION_BAND_2 | SATURATION_BAND_2 |
| SATURATION_BAND_3 | SATURATION_BAND_3 |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6 | SATURATION_BAND_6 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SATURATION_BAND_8 | SATURATION_BAND_8 |
| SATURATION_BAND_9 | SATURATION_BAND_9 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ID | SENSOR_ID |
| SPACECRAFT_ID | SPACECRAFT_ID |
| STATION_ID | STATION_ID |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| TARGET_WRS_PATH | TARGET_WRS_PATH |
| TARGET_WRS_ROW | TARGET_WRS_ROW |
| THERMAL_LINES | THERMAL_LINES |
| THERMAL_SAMPLES | THERMAL_SAMPLES |
| TIRS_SSM_MODEL | TIRS_SSM_MODEL |
| TIRS_SSM_POSITION_STATUS | TIRS_SSM_POSITION_STATUS |
| TIRS_STRAY_LIGHT_CORRECTION_SOURCE | |
| TRUNCATION_OLI | TRUNCATION_OLI |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE | |
| google:registration_count | |
| google:registration_offset_x | |
| google:registration_offset_y | |
| google:registration_ratio |
ETM+
資產 ID
將圖片和集合 ID 中的 C01 替換為 C02。舉例來說，Landsat 7 ETM+ 第 1 級：
| Collection 1 | Collection 2 |
|---|---|
| LANDSAT/LE07/C01/T1 | LANDSAT/LE07/C02/T1 |
樂團名稱
請注意樂團名稱的變更和新樂團的加入。
展開即可查看樂團名稱變更和新增樂團
| 說明 | 集合 1 名稱 | 集合 2 名稱 |
|---|---|---|
| 藍色 | B1 | B1 |
| 綠色 | B2 | B2 |
| 紅色 | B3 | B3 |
| 近紅外線 | B4 | B4 |
| 短波紅外線 1 | B5 | B5 |
| 低增益熱紅外線 1 | B6_VCID_1 | B6_VCID_1 |
| 高增益熱紅外線 1 | B6_VCID_2 | B6_VCID_2 |
| 短波紅外線 2 | B7 | B7 |
| Panchromatic | B8 | B8 |
| 品質確保位元遮罩 | BQA | QA_PIXEL |
| 放射飽和度品質保證 | QA_RADSAT | |
| 太陽方位角 | SAA | |
| 太陽天頂角 | SZA | |
| 查看方位角 | VAA | |
| 查看天頂角 | VZA |
更新程式碼，選取名稱已變更的波段，例如 QA 位元遮罩波段：
| Collection 1 | Collection 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
價值調整比例
不需要修改。集合 1 和集合 2 的原始 DN 反射率和熱值縮放比例相同。
品質確保遮蓋
QA 位元遮罩的位元代碼已變更。 請參閱目錄項目中「Bitmask for QA_PIXEL」(集合 2) 和「Bitmask for BQA」(集合 1) 部分的代碼。
下列運算式會使用 Collection 2 QA 位元遮罩程式碼，為指定圖片建立雲朵和陰影遮罩。
程式碼編輯器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
圖片屬性
在從集合 1 轉換至集合 2 的過程中，系統會新增一些圖片屬性，並移除一些屬性。沒有任何房源名稱變更。請參閱下列屬性比較表，判斷是否需要修改程式碼，以因應缺少或新增的屬性 (例如在篩選或處理時)。如需 Collection 2 屬性說明，請參閱產品目錄頁面中的「圖片屬性」分頁標籤。
展開即可比較房源清單
| Collection 1 | Collection 2 |
|---|---|
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CORRECTION_BIAS_BAND_1 | CORRECTION_BIAS_BAND_1 |
| CORRECTION_BIAS_BAND_2 | CORRECTION_BIAS_BAND_2 |
| CORRECTION_BIAS_BAND_3 | CORRECTION_BIAS_BAND_3 |
| CORRECTION_BIAS_BAND_4 | CORRECTION_BIAS_BAND_4 |
| CORRECTION_BIAS_BAND_5 | CORRECTION_BIAS_BAND_5 |
| CORRECTION_BIAS_BAND_6_VCID_1 | CORRECTION_BIAS_BAND_6_VCID_1 |
| CORRECTION_BIAS_BAND_6_VCID_2 | CORRECTION_BIAS_BAND_6_VCID_2 |
| CORRECTION_BIAS_BAND_7 | CORRECTION_BIAS_BAND_7 |
| CORRECTION_BIAS_BAND_8 | CORRECTION_BIAS_BAND_8 |
| CORRECTION_GAIN_BAND_1 | CORRECTION_GAIN_BAND_1 |
| CORRECTION_GAIN_BAND_2 | CORRECTION_GAIN_BAND_2 |
| CORRECTION_GAIN_BAND_3 | CORRECTION_GAIN_BAND_3 |
| CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
| CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
| CORRECTION_GAIN_BAND_6_VCID_1 | CORRECTION_GAIN_BAND_6_VCID_1 |
| CORRECTION_GAIN_BAND_6_VCID_2 | CORRECTION_GAIN_BAND_6_VCID_2 |
| CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
| CORRECTION_GAIN_BAND_8 | CORRECTION_GAIN_BAND_8 |
| CPF_NAME | |
| DATA_CATEGORY | |
| DATA_SOURCE_ELEVATION | |
| DATA_TYPE | |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| EPHEMERIS_TYPE | EPHEMERIS_TYPE |
| FILE_DATE | |
| GAIN_BAND_1 | GAIN_BAND_1 |
| GAIN_BAND_2 | GAIN_BAND_2 |
| GAIN_BAND_3 | GAIN_BAND_3 |
| GAIN_BAND_4 | GAIN_BAND_4 |
| GAIN_BAND_5 | GAIN_BAND_5 |
| GAIN_BAND_6_VCID_1 | GAIN_BAND_6_VCID_1 |
| GAIN_BAND_6_VCID_2 | GAIN_BAND_6_VCID_2 |
| GAIN_BAND_7 | GAIN_BAND_7 |
| GAIN_BAND_8 | GAIN_BAND_8 |
| GAIN_CHANGE_BAND_1 | GAIN_CHANGE_BAND_1 |
| GAIN_CHANGE_BAND_2 | GAIN_CHANGE_BAND_2 |
| GAIN_CHANGE_BAND_3 | GAIN_CHANGE_BAND_3 |
| GAIN_CHANGE_BAND_4 | GAIN_CHANGE_BAND_4 |
| GAIN_CHANGE_BAND_5 | GAIN_CHANGE_BAND_5 |
| GAIN_CHANGE_BAND_6_VCID_1 | GAIN_CHANGE_BAND_6_VCID_1 |
| GAIN_CHANGE_BAND_6_VCID_2 | GAIN_CHANGE_BAND_6_VCID_2 |
| GAIN_CHANGE_BAND_7 | GAIN_CHANGE_BAND_7 |
| GAIN_CHANGE_BAND_8 | GAIN_CHANGE_BAND_8 |
| GAIN_CHANGE_SCAN_BAND_1 | GAIN_CHANGE_SCAN_BAND_1 |
| GAIN_CHANGE_SCAN_BAND_2 | GAIN_CHANGE_SCAN_BAND_2 |
| GAIN_CHANGE_SCAN_BAND_3 | GAIN_CHANGE_SCAN_BAND_3 |
| GAIN_CHANGE_SCAN_BAND_4 | GAIN_CHANGE_SCAN_BAND_4 |
| GAIN_CHANGE_SCAN_BAND_5 | GAIN_CHANGE_SCAN_BAND_5 |
| GAIN_CHANGE_SCAN_BAND_6_VCID_1 | GAIN_CHANGE_SCAN_BAND_6_VCID_1 |
| GAIN_CHANGE_SCAN_BAND_6_VCID_2 | GAIN_CHANGE_SCAN_BAND_6_VCID_2 |
| GAIN_CHANGE_SCAN_BAND_7 | GAIN_CHANGE_SCAN_BAND_7 |
| GAIN_CHANGE_SCAN_BAND_8 | GAIN_CHANGE_SCAN_BAND_8 |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GRID_CELL_SIZE_PANCHROMATIC | GRID_CELL_SIZE_PANCHROMATIC |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY | IMAGE_QUALITY |
| K1_CONSTANT_BAND_6_VCID_1 | K1_CONSTANT_BAND_6_VCID_1 |
| K1_CONSTANT_BAND_6_VCID_2 | K1_CONSTANT_BAND_6_VCID_2 |
| K2_CONSTANT_BAND_6_VCID_1 | K2_CONSTANT_BAND_6_VCID_1 |
| K2_CONSTANT_BAND_6_VCID_2 | K2_CONSTANT_BAND_6_VCID_2 |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| 方向 | 方向 |
| PANCHROMATIC_LINES | PANCHROMATIC_LINES |
| PANCHROMATIC_SAMPLES | PANCHROMATIC_SAMPLES |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
| RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
| RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6_VCID_1 | RADIANCE_ADD_BAND_6_VCID_1 |
| RADIANCE_ADD_BAND_6_VCID_2 | RADIANCE_ADD_BAND_6_VCID_2 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_ADD_BAND_8 | RADIANCE_ADD_BAND_8 |
| RADIANCE_MAXIMUM_BAND_1 | |
| RADIANCE_MAXIMUM_BAND_2 | |
| RADIANCE_MAXIMUM_BAND_3 | |
| RADIANCE_MAXIMUM_BAND_4 | |
| RADIANCE_MAXIMUM_BAND_5 | |
| RADIANCE_MAXIMUM_BAND_6_VCID_1 | |
| RADIANCE_MAXIMUM_BAND_6_VCID_2 | |
| RADIANCE_MAXIMUM_BAND_7 | |
| RADIANCE_MAXIMUM_BAND_8 | |
| RADIANCE_MINIMUM_BAND_1 | |
| RADIANCE_MINIMUM_BAND_2 | |
| RADIANCE_MINIMUM_BAND_3 | |
| RADIANCE_MINIMUM_BAND_4 | |
| RADIANCE_MINIMUM_BAND_5 | |
| RADIANCE_MINIMUM_BAND_6_VCID_1 | |
| RADIANCE_MINIMUM_BAND_6_VCID_2 | |
| RADIANCE_MINIMUM_BAND_7 | |
| RADIANCE_MINIMUM_BAND_8 | |
| RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
| RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
| RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6_VCID_1 | RADIANCE_MULT_BAND_6_VCID_1 |
| RADIANCE_MULT_BAND_6_VCID_2 | RADIANCE_MULT_BAND_6_VCID_2 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| RADIANCE_MULT_BAND_8 | RADIANCE_MULT_BAND_8 |
| REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
| REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
| REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_ADD_BAND_8 | REFLECTANCE_ADD_BAND_8 |
| REFLECTANCE_MAXIMUM_BAND_1 | |
| REFLECTANCE_MAXIMUM_BAND_2 | |
| REFLECTANCE_MAXIMUM_BAND_3 | |
| REFLECTANCE_MAXIMUM_BAND_4 | |
| REFLECTANCE_MAXIMUM_BAND_5 | |
| REFLECTANCE_MAXIMUM_BAND_7 | |
| REFLECTANCE_MAXIMUM_BAND_8 | |
| REFLECTANCE_MINIMUM_BAND_1 | |
| REFLECTANCE_MINIMUM_BAND_2 | |
| REFLECTANCE_MINIMUM_BAND_3 | |
| REFLECTANCE_MINIMUM_BAND_4 | |
| REFLECTANCE_MINIMUM_BAND_5 | |
| REFLECTANCE_MINIMUM_BAND_7 | |
| REFLECTANCE_MINIMUM_BAND_8 | |
| REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
| REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
| REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTANCE_MULT_BAND_8 | REFLECTANCE_MULT_BAND_8 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| SATURATION_BAND_1 | SATURATION_BAND_1 |
| SATURATION_BAND_2 | SATURATION_BAND_2 |
| SATURATION_BAND_3 | SATURATION_BAND_3 |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6_VCID_1 | SATURATION_BAND_6_VCID_1 |
| SATURATION_BAND_6_VCID_2 | SATURATION_BAND_6_VCID_2 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SATURATION_BAND_8 | SATURATION_BAND_8 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ANOMALIES | |
| SENSOR_ID | SENSOR_ID |
| SENSOR_MODE | SENSOR_MODE |
| SENSOR_MODE_SLC | |
| SPACECRAFT_ID | SPACECRAFT_ID |
| STATION_ID | STATION_ID |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| THERMAL_LINES | THERMAL_LINES |
| THERMAL_SAMPLES | THERMAL_SAMPLES |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE | |
| google:registration_count | |
| google:registration_offset_x | |
| google:registration_offset_y | |
| google:registration_ratio |
TM
資產 ID
將圖片和集合 ID 中的 C01 替換為 C02。舉例來說，Landsat 5 TM Tier 1：
| Collection 1 | Collection 2 |
|---|---|
| LANDSAT/LT05/C01/T1 | LANDSAT/LT05/C02/T1 |
樂團名稱
請注意樂團名稱的變更和新樂團的加入。
展開即可查看樂團名稱變更和新增樂團
| 說明 | 集合 1 名稱 | 集合 2 名稱 |
|---|---|---|
| 藍色 | B1 | B1 |
| 綠色 | B2 | B2 |
| 紅色 | B3 | B3 |
| 近紅外線 | B4 | B4 |
| 短波紅外線 1 | B5 | B5 |
| 熱紅外線 1 | B6 | B6 |
| 短波紅外線 2 | B7 | B7 |
| 品質確保位元遮罩 | BQA | QA_PIXEL |
| 放射飽和度品質保證 | QA_RADSAT | |
| 太陽方位角 | SAA | |
| 太陽天頂角 | SZA | |
| 查看方位角 | VAA | |
| 查看天頂角 | VZA |
更新程式碼，選取名稱已變更的波段，例如 QA 位元遮罩波段：
| Collection 1 | Collection 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
價值調整比例
不需要修改。集合 1 和集合 2 的原始 DN 反射率和熱值縮放比例相同。
品質確保遮蓋
QA 位元遮罩的位元代碼已變更。 請參閱目錄項目的「Bitmask for QA_PIXEL」(Collection 2) 和「Bitmask for BQA」(Collection 1) 部分，瞭解代碼 (例如 TM 5) 的位元遮罩。
下列運算式會使用 Collection 2 QA 位元遮罩程式碼，為指定圖片建立雲朵和陰影遮罩。
程式碼編輯器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
圖片屬性
在從集合 1 轉換至集合 2 的過程中，系統會新增一些圖片屬性，並移除一些屬性。沒有任何房源名稱變更。請參閱下列屬性比較表，判斷是否需要修改程式碼，以因應缺少或新增的屬性 (例如在篩選或處理時)。如需 Collection 2 屬性說明 (例如 TM 5)，請參閱產品目錄頁面中的「圖片屬性」分頁標籤。
展開即可比較房源清單
| Collection 1 | Collection 2 |
|---|---|
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CORNER_LL_LAT_PRODUCT | |
| CORNER_LL_LON_PRODUCT | |
| CORNER_LL_PROJECTION_X_PRODUCT | |
| CORNER_LL_PROJECTION_Y_PRODUCT | |
| CORNER_LR_LAT_PRODUCT | |
| CORNER_LR_LON_PRODUCT | |
| CORNER_LR_PROJECTION_X_PRODUCT | |
| CORNER_LR_PROJECTION_Y_PRODUCT | |
| CORNER_UL_LAT_PRODUCT | |
| CORNER_UL_LON_PRODUCT | |
| CORNER_UL_PROJECTION_X_PRODUCT | |
| CORNER_UL_PROJECTION_Y_PRODUCT | |
| CORNER_UR_LAT_PRODUCT | |
| CORNER_UR_LON_PRODUCT | |
| CORNER_UR_PROJECTION_X_PRODUCT | |
| CORNER_UR_PROJECTION_Y_PRODUCT | |
| CORRECTION_BIAS_BAND_1 | CORRECTION_BIAS_BAND_1 |
| CORRECTION_BIAS_BAND_2 | CORRECTION_BIAS_BAND_2 |
| CORRECTION_BIAS_BAND_3 | CORRECTION_BIAS_BAND_3 |
| CORRECTION_BIAS_BAND_4 | CORRECTION_BIAS_BAND_4 |
| CORRECTION_BIAS_BAND_5 | CORRECTION_BIAS_BAND_5 |
| CORRECTION_BIAS_BAND_6 | CORRECTION_BIAS_BAND_6 |
| CORRECTION_BIAS_BAND_7 | CORRECTION_BIAS_BAND_7 |
| CORRECTION_GAIN_BAND_1 | CORRECTION_GAIN_BAND_1 |
| CORRECTION_GAIN_BAND_2 | CORRECTION_GAIN_BAND_2 |
| CORRECTION_GAIN_BAND_3 | CORRECTION_GAIN_BAND_3 |
| CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
| CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
| CORRECTION_GAIN_BAND_6 | CORRECTION_GAIN_BAND_6 |
| CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
| CPF_NAME | |
| DATA_CATEGORY | |
| DATA_SOURCE_ELEVATION | |
| DATA_TYPE | |
| DATA_TYPE_L0RP | DATA_TYPE_L0RP |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| EPHEMERIS_TYPE | EPHEMERIS_TYPE |
| FILE_DATE | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
| GEOMETRIC_RMSE_VERIFY_QUAD_LL | GEOMETRIC_RMSE_VERIFY_QUAD_LL |
| GEOMETRIC_RMSE_VERIFY_QUAD_LR | GEOMETRIC_RMSE_VERIFY_QUAD_LR |
| GEOMETRIC_RMSE_VERIFY_QUAD_UL | GEOMETRIC_RMSE_VERIFY_QUAD_UL |
| GEOMETRIC_RMSE_VERIFY_QUAD_UR | GEOMETRIC_RMSE_VERIFY_QUAD_UR |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY | IMAGE_QUALITY |
| K1_CONSTANT_BAND_6 | K1_CONSTANT_BAND_6 |
| K2_CONSTANT_BAND_6 | K2_CONSTANT_BAND_6 |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| MAP_PROJECTION_L0RA | MAP_PROJECTION_L0RA |
| 方向 | 方向 |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
| RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
| RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_MAXIMUM_BAND_1 | |
| RADIANCE_MAXIMUM_BAND_2 | |
| RADIANCE_MAXIMUM_BAND_3 | |
| RADIANCE_MAXIMUM_BAND_4 | |
| RADIANCE_MAXIMUM_BAND_5 | |
| RADIANCE_MAXIMUM_BAND_6 | |
| RADIANCE_MAXIMUM_BAND_7 | |
| RADIANCE_MINIMUM_BAND_1 | |
| RADIANCE_MINIMUM_BAND_2 | |
| RADIANCE_MINIMUM_BAND_3 | |
| RADIANCE_MINIMUM_BAND_4 | |
| RADIANCE_MINIMUM_BAND_5 | |
| RADIANCE_MINIMUM_BAND_6 | |
| RADIANCE_MINIMUM_BAND_7 | |
| RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
| RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
| RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
| REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
| REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_MAXIMUM_BAND_1 | |
| REFLECTANCE_MAXIMUM_BAND_2 | |
| REFLECTANCE_MAXIMUM_BAND_3 | |
| REFLECTANCE_MAXIMUM_BAND_4 | |
| REFLECTANCE_MAXIMUM_BAND_5 | |
| REFLECTANCE_MAXIMUM_BAND_7 | |
| REFLECTANCE_MINIMUM_BAND_1 | |
| REFLECTANCE_MINIMUM_BAND_2 | |
| REFLECTANCE_MINIMUM_BAND_3 | |
| REFLECTANCE_MINIMUM_BAND_4 | |
| REFLECTANCE_MINIMUM_BAND_5 | |
| REFLECTANCE_MINIMUM_BAND_7 | |
| REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
| REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
| REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| SATURATION_BAND_1 | SATURATION_BAND_1 |
| SATURATION_BAND_2 | SATURATION_BAND_2 |
| SATURATION_BAND_3 | SATURATION_BAND_3 |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6 | SATURATION_BAND_6 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ANOMALIES | |
| SENSOR_ID | SENSOR_ID |
| SENSOR_MODE | SENSOR_MODE |
| SPACECRAFT_ID | SENSOR_MODE_SLC |
| STATION_ID | SPACECRAFT_ID |
| STATION_ID | |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| THERMAL_LINES | THERMAL_LINES |
| THERMAL_SAMPLES | THERMAL_SAMPLES |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE | |
| google:registration_count | |
| google:registration_offset_x | |
| google:registration_offset_y | |
| google:registration_ratio |
MSS
資產 ID
將圖片和集合 ID 中的 C01 替換為 C02。舉例來說，Landsat 1 MSS Tier 1：
| Collection 1 | Collection 2 |
|---|---|
| LANDSAT/LM01/C01/T1 | LANDSAT/LM01/C02/T1 |
樂團名稱
請注意樂團名稱的變更和新樂團的加入。
展開即可查看樂團名稱變更和新增樂團
| 說明 | 集合 1 名稱 | 集合 2 名稱 |
|---|---|---|
| 綠色 | B4 (MSS 1-3)；B1 (MSS 4-5) | B4 (MSS 1-3)；B1 (MSS 4-5) |
| 紅色 | B5 (MSS 1-3)；B2 (MSS 4-5) | B5 (MSS 1-3)；B2 (MSS 4-5) |
| 近紅外線 1 | B6 (MSS 1-3)；B3 (MSS 4-5) | B6 (MSS 1-3)；B3 (MSS 4-5) |
| 近紅外線 2 | B7 (MSS 1-3)；B4 (MSS 4-5) | B7 (MSS 1-3)；B4 (MSS 4-5) |
| 品質確保位元遮罩 | BQA | QA_PIXEL |
| 放射飽和度品質保證 | QA_RADSAT |
更新程式碼，選取名稱已變更的波段，例如 QA 位元遮罩波段：
| Collection 1 | Collection 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
價值調整比例
不需要修改。集合 1 和集合 2 的原始 DN 值縮放比例相同。
品質確保遮蓋
QA 位元遮罩的位元代碼已變更。 請參閱目錄項目的「Bitmask for QA_PIXEL」(Collection 2) 和「Bitmask for BQA」(Collection 1) 部分，瞭解程式碼 (例如 MSS 1) 的位元遮罩。
下列運算式會使用 Collection 2 QA 位元遮罩程式碼，為指定圖片建立雲朵和陰影遮罩。
程式碼編輯器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
圖片屬性
在從集合 1 轉換至集合 2 的過程中，系統會新增一些圖片屬性，並移除一些屬性。沒有任何房源名稱變更。請參閱下列屬性比較表，判斷是否需要修改程式碼，以因應缺少或新增的屬性 (例如在篩選或處理時)。如需 Collection 2 屬性說明 (例如 MSS 1)，請參閱產品目錄頁面中的「圖片屬性」分頁標籤。
展開即可比較房源清單
| Collection 1 | Collection 2 |
|---|---|
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
| CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
| CORRECTION_GAIN_BAND_6 | CORRECTION_GAIN_BAND_6 |
| CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
| CPF_NAME | |
| DATA_CATEGORY | |
| DATA_SOURCE_ELEVATION | |
| DATA_TYPE | |
| DATA_TYPE_L0RP | DATA_TYPE_L0RP |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| EPHEMERIS_TYPE | EPHEMERIS_TYPE |
| FILE_DATE | |
| GAIN_BAND_4 | GAIN_BAND_4 |
| GAIN_BAND_5 | GAIN_BAND_5 |
| GAIN_BAND_6 | GAIN_BAND_6 |
| GAIN_BAND_7 | GAIN_BAND_7 |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
| GEOMETRIC_RMSE_VERIFY_QUAD_LL | GEOMETRIC_RMSE_VERIFY_QUAD_LL |
| GEOMETRIC_RMSE_VERIFY_QUAD_LR | GEOMETRIC_RMSE_VERIFY_QUAD_LR |
| GEOMETRIC_RMSE_VERIFY_QUAD_UL | GEOMETRIC_RMSE_VERIFY_QUAD_UL |
| GEOMETRIC_RMSE_VERIFY_QUAD_UR | GEOMETRIC_RMSE_VERIFY_QUAD_UR |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY | IMAGE_QUALITY |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| MAP_PROJECTION_L0RA | MAP_PROJECTION_L0RA |
| 方向 | 方向 |
| PRESENT_BAND_4 | PRESENT_BAND_4 |
| PRESENT_BAND_5 | PRESENT_BAND_5 |
| PRESENT_BAND_6 | PRESENT_BAND_6 |
| PRESENT_BAND_7 | PRESENT_BAND_7 |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_6 | REFLECTANCE_ADD_BAND_6 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_6 | REFLECTANCE_MULT_BAND_6 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6 | SATURATION_BAND_6 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ID | SENSOR_ID |
| SPACECRAFT_ID | SPACECRAFT_ID |
| STATION_ID | STATION_ID |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE |
Landsat Pre-Collection
Earth Engine 資料封存包含 Landsat 前期集合資料。如果圖片和集合 ID 缺少集合元件，就表示圖片和集合未連結。
- Collection 1 / Collection 2：
LANDSAT/[MISSION]/[COLLECTION]/[PRODUCT](例如LANDSAT/LE07/C02/T1) - 預先收集：
LANDSAT/[MISSION]_[PRODUCT](例如LANDSAT/LE7_L1T)
如果您使用「預先收集」資料，請盡快改用「收集 2」資料。請參閱本指南中「集合 2」的相關資訊，更新指令碼。
時間複合
Earth Engine 提供計算出的時間複合影像 (8 天、32 天和年度)。為「集合 1」和「前集合」(PC/C1) 和「集合 2」(C2) 生成的檔案之間存在一系列差異。如要查看用於產生 C2 合成的程式碼，請前往 GitHub。
地表反射率複合資料
C2 合成影像是由 USGS L2 地表反射率產品生成，而 PC/C1 合成影像則使用大氣層頂端反射率生成。
所有樂器都集中在一個收藏中
PC/C1 合成影像會依據每項儀器，分成一組時間索引合成影像。這主要是因為儀器之間的校正差異。有了 C2 表面反射率資料，相互校正就足以將儀器合併在一起。
嚴格篩選
C2 複合資料會套用更嚴格的資料品質篩選條件，包括：
- 由於軌道漂移 / 場景擷取時間，L7 僅限於 1999 年至 2017 年。
- 由於軌道穩定性問題，我們省略了 2013 年 5 月 1 日前的 L8 資料。
- 省略 WRS_ROW ≥ 122 的資料 (沒有夜間圖片)。
- 省略任何 QA 標記為「非清楚」的像素。
- 省略 ATMOS_OPACITY > 300 (霧霾) 的 L4–L7 像素。
- 省略有任何 QA_AEROSOL 問題的 L8-L9 像素。
- 省略任何標示為飽和或值超出範圍的像素。
中位數合成
PC/C1 合成項目使用最後一個在頂端的合成項目。集合 2 合成器 使用中位數合成器。
命名
PC/C1 複合路徑的格式為
LANDSAT/INSTRUMENT/C01/T1_PERIOD_INDEX， 而 C2 複合路徑的格式為LANDSAT/COMPOSITES/C02/T1_L2_PERIOD_INDEX， 其中 INSTRUMENT 為 LT04、LT05、LE07 或 LC08，PERIOD 則為 8DAY、32DAY 或 ANNUAL。舉例來說，下表顯示 C2 合成影像的資產路徑，大致對應於每個 INDEX 的 C1 LC08 年間合成影像。請注意，C2 複合資料中不含 INSTRUMENT，因為每個複合資料都包含 L4 到 L9 的所有相關資料。Collection 1 Collection 2 LANDSAT/LC08/C01/T1_ANNUAL_BAI LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_BAI LANDSAT/LC08/C01/T1_ANNUAL_EVI LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_EVI LANDSAT/LC08/C01/T1_ANNUAL_GREENEST_TOA LANDSAT/LC08/C01/T1_ANNUAL_NBRT LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_NBR LANDSAT/LC08/C01/T1_ANNUAL_NDSI 在合成過程中遮蓋雪花像素，因此不會產生 LANDSAT/LC08/C01/T1_ANNUAL_NDVI LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_NDVI LANDSAT/LC08/C01/T1_ANNUAL_NDWI LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_NDWI LANDSAT/LC08/C01/T1_ANNUAL_RAW LANDSAT/LC08/C01/T1_ANNUAL_TOA