boxFilterAsync function
BoxFilter blurs an image using the box filter.
For further details, please see: https:///docs.opencv.org/master/d4/d86/group__imgproc__filter.html#gad533230ebf2d42509547d514f7d3fbc3
Implementation
Future<Mat> boxFilterAsync(Mat src, int depth, (int, int) ksize) async =>
cvRunAsync((callback) => cffi.BoxFilter_Async(src.ref, depth, ksize.cvd.ref, callback), matCompleter);