cvCalcArrHist     766 modules/imgproc/include/opencv2/imgproc/imgproc_c.h CVAPI(void)  cvCalcArrHist( CvArr** arr, CvHistogram* hist,
cvCalcArrHist     775 modules/imgproc/include/opencv2/imgproc/imgproc_c.h     cvCalcArrHist( (CvArr**)image, hist, accumulate, mask );