Draft Dev/burnin brackets
Links to the original vidtk code:
Detection: https://kwgitlab.kitware.com/computer-vision/vidtk/-/blob/master/library/object_detectors/moving_burnin_detector_opencv.cxx#L333
Drawn: Image pixels changed - https://kwgitlab.kitware.com/computer-vision/vidtk/-/blob/master/library/object_detectors/moving_burnin_detector_opencv.cxx#L790
One of four corners - https://kwgitlab.kitware.com/computer-vision/vidtk/-/blob/master/library/object_detectors/moving_burnin_detector_opencv.cxx#L798
Calculate which points are brackets - https://kwgitlab.kitware.com/computer-vision/vidtk/-/blob/master/library/object_detectors/moving_burnin_detector_opencv.cxx#L963
@daniel-riehm Could you take a look at the bracket detection and drawing to see if you notice anything wrong?