reduceAsync function
Reduce reduces a matrix to a vector.
For further details, please see: https://docs.opencv.org/master/d2/de8/group__core__array.html#ga4b78072a303f29d9031d56e5638da78e
Implementation
Future<Mat> reduceAsync(InputArray src, int dim, int rtype, {int dtype = -1}) async =>
cvRunAsync((callback) => cffi.core_Reduce_Async(src.ref, dim, rtype, dtype, callback), matCompleter);