Constructor Detail

• ContourDetectorFrameHandler

  ContourDetectorFrameHandler(Context context, ContourDetector contourDetector)

Method Detail

• handleFrame

  @Synchronized() Boolean handleFrame(FrameHandler.Frame previewFrame)

  Invoked for every new camera preview frame.

  Parameters:

  previewFrame - captured preview frame data

• addResultHandler

   final Unit addResultHandler(ContourDetectorFrameHandler.ResultHandler handler)

  Registers result handler which will be notified about contour detection results.

  Results are coming on the worker thread. Don't forget to move execution to main thread before updating UI.

  Parameters:

  handler - handler to register.

• removeResultHandler

   final Unit removeResultHandler(ContourDetectorFrameHandler.ResultHandler handler)

  Unregisters handler.

  Parameters:

  handler - handler to unregister.

• clearResultHandlers

   final Unit clearResultHandlers()

  Unregisters all handlers.

• setAcceptedAngleScore

   final Unit setAcceptedAngleScore(Double acceptedAngleScore)

  The minimum score in percent (0 - 100) of the perspective distortion to accept a detected document. Default is 75.0. Set lower values to accept more perspective distortion.

  Warning: Lower values result in more blurred document images.

• setAcceptedSizeScore

   final Unit setAcceptedSizeScore(Double acceptedSizeScore)

  The minimum size in percent (0 - 100) of the screen size to accept a detected document. It is sufficient that height or width match the score. Default is 80.0.

  Warning: Lower values result in low resolution document images.

• setRequiredAspectRatios

   final Unit setRequiredAspectRatios(List<AspectRatio> requiredPageAspectRatios)

  Set required PageAspectRatios.

• setIgnoreBadAspectRatio

   final Unit setIgnoreBadAspectRatio(Boolean ignoreBadAspectRatio)

  Flag to determine whether to treat DetectionStatus.OK_BUT_BAD_ASPECT_RATIO status as DetectionStatus.OK. Default is false

• attach

   final static ContourDetectorFrameHandler attach(IScanbotCameraView cameraView, ContourDetector detector)

  Convenience method for creating new ContourDetectorFrameHandler and adding it as FrameHandler to given camera view.

  Parameters:

  cameraView - camera view to which new contour detector will be attached

  detector - contour detector instance