calcBackProj_    1898 modules/imgproc/src/histogram.cpp         calcBackProj_<ushort, ushort>(ptrs, deltas, imsize, hist, dims, ranges, _uniranges, (float)scale, uniform );
calcBackProj_    1900 modules/imgproc/src/histogram.cpp         calcBackProj_<float, float>(ptrs, deltas, imsize, hist, dims, ranges, _uniranges, (float)scale, uniform );