compute method

Scalar compute(Mat cmp)

Computes SSIM.

https://docs.opencv.org/4.x/d9/db5/classcv_1_1quality_1_1QualitySSIM.html#a49d5ecc72e83b8876c8293244c3667e4

Implementation

Scalar compute(Mat cmp) {
  final p = calloc<cvg.Scalar>();
  cvRun(() => cffi.QualitySSIM_compute(ref, cmp.ref, p));
  return Scalar.fromPointer(p);
}