void cvSetImagesForHaarClassifierCascade(CvHaarClassifierCascade* cascade, CvArr* sum, CvArr* sqsum, CvArr* tilted_sum, double scale) {
    void *fptr;

    fptr = dlsym(_Chcv_handle, "cvSetImagesForHaarClassifierCascade_chdl");
    if(fptr == NULL) {
        fprintf(_stderr, "Error: %s(): dlsym(): %s\n", __func__,  dlerror());
        return;
    }
    dlrunfun(fptr, NULL, cvSetImagesForHaarClassifierCascade, cascade, sum, sqsum, tilted_sum, scale);
}
