使用OpenCV/C+；校准带有自定义主点的摄像机+；（梅拉）

我正试图校准一个主点不在中心的相机。因此，我将摄影机矩阵中的主点设置为：

// Image size = 320 x 240;
Mat camera_matrix = (Mat_<double>(3, 3) << 1, 0, 214, 0, 1, 106, 0, 0, 1);

但是，当我使用此标志时，相机矩阵不会以任何方式改变；与校准前相同。我错过什么了吗

谢谢

编辑：下面是我如何使用CalibleCamera的标志

    // Set custom center by initializing camera matrix
    Mat camera_matrix = (Mat_<double>(3, 3) << 1, 0, 214, 0, 1, 106, 0, 0, 1);
    .
    .
    .
    .
    double error = calibrateCamera(
        object_points,
        image_points,
        image_sz,
        camera_matrix,
        dist_matrix,
        rvec,
        tvec,
        CALIB_FIX_PRINCIPAL_POINT + CALIB_USE_INTRINSIC_GUESS
    );
    .
    .
    .
    .
    // Getting undistortion maps
    initUndistortRectifyMap(
        camera_matrix, 
        dist_matrix, 
        identity, 
        camera_matrix, 
        image_sz, 
        CV_32FC1, 
        map1, 
        map2);

    // Correcting frame and displaying
    remap(test_image, output_im, map1, map2, INTER_LINEAR);

//通过初始化相机矩阵设置自定义中心
Mat camera_matrix=（Mat_uu3，3）如何使用该标志？如果您共享了代码片段，该标志会很有用。如何使用该标志？如果您共享了代码片段，该标志会很有用
    // Set custom center by initializing camera matrix
    Mat camera_matrix = (Mat_<double>(3, 3) << 1, 0, 214, 0, 1, 106, 0, 0, 1);
    .
    .
    .
    .
    double error = calibrateCamera(
        object_points,
        image_points,
        image_sz,
        camera_matrix,
        dist_matrix,
        rvec,
        tvec,
        CALIB_FIX_PRINCIPAL_POINT + CALIB_USE_INTRINSIC_GUESS
    );
    .
    .
    .
    .
    // Getting undistortion maps
    initUndistortRectifyMap(
        camera_matrix, 
        dist_matrix, 
        identity, 
        camera_matrix, 
        image_sz, 
        CV_32FC1, 
        map1, 
        map2);

    // Correcting frame and displaying
    remap(test_image, output_im, map1, map2, INTER_LINEAR);