void cvBackProjectPCA(CvArr* proj, CvArr* mean, CvArr* eigenvects, CvArr* result) {
    void *fptr;

    fptr = dlsym(_Chcv_handle, "cvBackProjectPCA_chdl");
    if(fptr == NULL) {
        fprintf(_stderr, "Error: %s(): dlsym(): %s\n", __func__,  dlerror());
        return;
    }
    dlrunfun(fptr, NULL, cvBackProjectPCA, proj, mean, eigenvects, result);
}
