vconcatAsync function
Vconcat applies vertical concatenation to given matrices.
For further details, please see: https://docs.opencv.org/4.x/d2/de8/group__core__array.html#gaad07cede730cdde64b90e987aad179b8
Implementation
Future<Mat> vconcatAsync(InputArray src1, InputArray src2) async =>
cvRunAsync((callback) => cffi.core_Vconcat_Async(src1.ref, src2.ref, callback), matCompleter);