void cvLogPolar(CvArr* src, CvArr* dst, CvPoint2D32f center, double M, int flags) {
    void *fptr;

    fptr = dlsym(_Chcv_handle, "cvLogPolar_chdl");
    if(fptr == NULL) {
        fprintf(_stderr, "Error: %s(): dlsym(): %s\n", __func__,  dlerror());
        return;
    }
    dlrunfun(fptr, NULL, cvLogPolar, src, dst, center, M, flags);
}
