illuminationChange function
        
Mat
illuminationChange(
    
- InputArray src,
 - InputArray mask, {
 - double alpha = 0.2,
 - double beta = 0.4,
 
IlluminationChange modifies locally the apparent illumination of an image. For further details, please see: https://docs.opencv.org/master/df/da0/group__photo__clone.html#gac5025767cf2febd8029d474278e886c7
Implementation
//
/// For further details, please see:
/// https://docs.opencv.org/master/df/da0/group__photo__clone.html#gac5025767cf2febd8029d474278e886c7
Mat illuminationChange(InputArray src, InputArray mask, {double alpha = 0.2, double beta = 0.4}) {
  final dst = Mat.empty();
  cvRun(() => cphoto.cv_illuminationChange(src.ref, mask.ref, dst.ref, alpha, beta, ffi.nullptr));
  return dst;
}