void cvCalcArrBackProjectPatch(CvArr** image, CvArr* dst, CvSize range, CvHistogram* hist, int method, double factor) {
    void *fptr;

    fptr = dlsym(_Chcv_handle, "cvCalcArrBackProjectPatch_chdl");
    if(fptr == NULL) {
        fprintf(_stderr, "Error: %s(): dlsym(): %s\n", __func__,  dlerror());
        return;
    }
    dlrunfun(fptr, NULL, cvCalcArrBackProjectPatch, image, dst, range, hist, method, factor);
}
