# ee.Algorithms.Landsat.TOA

Calibrates Landsat DN to TOA reflectance and brightness temperature for Landsat and similar data. For recently-acquired scenes calibration coefficients are extracted from the image metadata; for older scenes the coefficients are derived from:

<br />

Chander, Gyanesh, Brian L. Markham, and Dennis L. Helder. "Summary of current radiometric calibration coefficients for Landsat MSS, TM, ETM+, and EO-1 ALI sensors." Remote sensing of environment 113.5 (2009): 893-903.

| Usage | Returns |
|---|---|
| `ee.Algorithms.Landsat.TOA(input)` | Image |

| Argument | Type | Details |
|---|---|---|
| `input` | Image | The Landsat image to process. |