stackBlur function

Mat stackBlur(
  1. Mat src,
  2. (int, int) ksize, {
  3. Mat? dst,
})

Blurs an image using the stackBlur.

The function applies and stackBlur to an image. stackBlur can generate similar results as Gaussian blur, and the time consumption does not increase with the increase of kernel size. It creates a kind of moving stack of colors whilst scanning through the image. Thereby it just has to add one new block of color to the right side of the stack and remove the leftmost color. The remaining colors on the topmost layer of the stack are either added on or reduced by one, depending on if they are on the right or on the left side of the stack. The only supported borderType is BORDER_REPLICATE. Original paper was proposed by Mario Klingemann, which can be found https://underdestruction.com/2004/02/25/stackblur-2004.

https://docs.opencv.org/4.x/d4/d86/group__imgproc__filter.html#ga13a01048a8a200aab032ce86a9e7c7be

Implementation

Mat stackBlur(Mat src, (int, int) ksize, {Mat? dst}) {
  dst ??= Mat.empty();
  cvRun(
    () => cimgproc.cv_stackBlur(
      src.ref,
      dst!.ref,
      ksize.cvd.ref,
      ffi.nullptr,
    ),
  );
  return dst;
}