findContoursAsync function

Future<(Contours, VecVec4i)> findContoursAsync(
  1. Mat src,
  2. int mode,
  3. int method
)

FindContours finds contours in a binary image.

For further details, please see: https://docs.opencv.org/4.x/d3/dc0/group__imgproc__shape.html#gadf1ad6a0b82947fa1fe3c3d497f260e0

Implementation

Future<(Contours contours, VecVec4i hierarchy)> findContoursAsync(Mat src, int mode, int method) async {
  final hierarchy = VecVec4i();
  final contours = VecVecPoint();
  return cvRunAsync0(
    (callback) => cimgproc.cv_findContours(src.ref, contours.ptr, hierarchy.ptr, mode, method, callback),
    (c) {
      return c.complete((contours, hierarchy));
    },
  );
}