void cvAdaptiveThreshold(CvArr* src, CvArr* dst, double max_value, int adaptive_method, int threshold_type, int block_size, double param1) {
    void *fptr;

    fptr = dlsym(_Chcv_handle, "cvAdaptiveThreshold_chdl");
    if(fptr == NULL) {
        fprintf(_stderr, "Error: %s(): dlsym(): %s\n", __func__,  dlerror());
        return;
    }
    dlrunfun(fptr, NULL, cvAdaptiveThreshold, src, dst, max_value, adaptive_method, threshold_type, block_size, param1);
}
