hconcatAsync function
Hconcat applies horizontal concatenation to given matrices.
For further details, please see: https://docs.opencv.org/master/d2/de8/group__core__array.html#gaab5ceee39e0580f879df645a872c6bf7
Implementation
Future<Mat> hconcatAsync(InputArray src1, InputArray src2) async =>
cvRunAsync((callback) => cffi.core_Hconcat_Async(src1.ref, src2.ref, callback), matCompleter);