find4QuadCornerSubpix function

bool find4QuadCornerSubpix(
  1. InputArray img,
  2. InputOutputArray corners,
  3. (int, int) regionSize
)

finds subpixel-accurate positions of the chessboard corners

bool cv::find4QuadCornerSubpix (InputArray img, InputOutputArray corners, Size region_size)

https://docs.opencv.org/4.11.0/d9/d0c/group__calib3d.html#gab8816c8a176e1d78893b843b3f01557a

Implementation

bool find4QuadCornerSubpix(
  InputArray img,
  InputOutputArray corners,
  (int, int) regionSize,
) {
  final prval = calloc<ffi.Bool>();
  cvRun(
    () => ccalib3d.cv_find4QuadCornerSubpix(
      img.ref,
      corners.ref,
      regionSize.cvd.ref,
      prval,
      ffi.nullptr,
    ),
  );
  final rval = prval.value;
  calloc.free(prval);
  return rval;
}