如何擦除或消失cv::Mat矩阵或图像中的黑色边框

cv::Mat eraseBlackBorder(cv::Mat image) {
    int borderSize = 10; // 设置边框大小
    cv::Mat borderedImage;
    cv::copyMakeBorder(image, borderedImage, borderSize, borderSize, borderSize, borderSize, cv::BORDER_CONSTANT, cv::Scalar(0));

    cv::bitwise_not(borderedImage, borderedImage);

    cv::floodFill(borderedImage, cv::Point(0, 0), cv::Scalar(255));
    cv::floodFill(borderedImage, cv::Point(borderedImage.cols - 1, 0), cv::Scalar(255));
    cv::floodFill(borderedImage, cv::Point(0, borderedImage.rows - 1), cv::Scalar(255));
    cv::floodFill(borderedImage, cv::Point(borderedImage.cols - 1, borderedImage.rows - 1), cv::Scalar(255));

    cv::bitwise_not(borderedImage, borderedImage);

    cv::Rect roi(borderSize, borderSize, image.cols, image.rows);
    cv::Mat result = borderedImage(roi);

    return result;
}