int cvCamShift(CvArr* prob_image, CvRect window, CvTermCriteria criteria, CvConnectedComp* comp, CvBox2D* box) {
    void *fptr;
    int retval;

    fptr = dlsym(_Chcv_handle, "cvCamShift_chdl");
    if(fptr == NULL) {
        fprintf(_stderr, "Error: %s(): dlsym(): %s\n", __func__,  dlerror());
        return -1;
    }
    dlrunfun(fptr, &retval, cvCamShift, prob_image, window, criteria, comp, box);
    return retval;
}
