update method

(bool, Rect) update(
  1. Mat img
)

Update the tracker, find the new most likely bounding box for the target. https://docs.opencv.org/4.x/d0/d0a/classcv_1_1Tracker.html#a92d2012f576e6c06eb2e257d110a6529

Implementation

(bool, Rect) update(Mat img) {
  final bBox = calloc<cvg.CvRect>();
  final p = calloc<ffi.Bool>();
  cvRun(() => cvideo.cv_TrackerMIL_update(ref, img.ref, bBox, p, ffi.nullptr));
  final rval = (p.value, Rect.fromPointer(bBox));
  calloc.free(p);
  return rval;
}