Overview
A concrete subclass of GMVDataOutput.
GMVMultiDetectorDataOutput allows clients to specify multiple detectors in initialization. When receiving frames from the video pipeline, all the detectoros will run detection separately on each frame. The detection results are delivered through its multiDetectorDataDelegate.
Inherits GMVDataOutput.
Instance Method Summary | |
| (instancetype) | - initWithDetectors: |
| Designated initializer. More... | |
| (instancetype) | - initWithDetector: |
| Designated initializer. More... | |
| (void) | - receivedResults: |
| Subclasses need to override these methods. More... | |
| (void) | - cleanup |
| Clean up resources. More... | |
Property Summary | |
| id < GMVMultiDetectorDataOutputDelegate > | multiDetectorDataDelegate |
| Methods of the protocol allow the delegate to perform post processing on detected features. More... | |
| id< GMVDataOutputDelegate > | dataDelegate |
| Data source information delegate. More... | |
| AVCaptureDevicePosition | captureDevicePosition |
| Sets the camera device position to help calculate image rotation. More... | |
| CGSize | previewFrameSize |
| The video frame preview size. More... | |
| NSUInteger | maxFrameGap |
| The maximum allowable frames must pass without detecting a specific feature before delegate is notified the feature is no longer available. More... | |
Method Detail
| - (instancetype) initWithDetectors: | (NSArray< GMVDetector * > *) | NS_DESIGNATED_INITIALIZER |
Designated initializer.
- Parameters
-
detectors The detectors associated to the data output. detectorsis expected to be non-empty.
| - (instancetype) initWithDetector: | (GMVDetector *) | NS_DESIGNATED_INITIALIZER |
Designated initializer.
- Parameters
-
detector use to run detection.
| - (void) receivedResults: | (NSArray< __kindof GMVFeature * > *) | results |
Subclasses need to override these methods.
Detected GMVFeature results.
- Parameters
-
results The full detection results.
| - (void) cleanup |
Clean up resources.
Property Detail
|
readwritenonatomicweak |
Methods of the protocol allow the delegate to perform post processing on detected features.
The GMVOutputTrackerDelegate object returned by this delegate is retained strongly. Call -cleanup to properly release internal variables.
|
readwritenonatomicweakinherited |
Data source information delegate.
|
readwritenonatomicassigninherited |
Sets the camera device position to help calculate image rotation.
If not provided, it will try to retrieve position info through AVCaptureConnection.
|
readnonatomicassigninherited |
The video frame preview size.
The value is used to normalize display properties.
|
readwritenonatomicassigninherited |
The maximum allowable frames must pass without detecting a specific feature before delegate is notified the feature is no longer available.
The value is default to 3.