图像直方图归一化C++源码

根据提供的引用内容，以下是图像直方图归一化的C++源码：

void histNormalize(Mat& src, Mat& dst)
{
    // 计算直方图
    int histSize = 256;
    float range[] = { 0, 256 };
    const float* histRange = { range };
    bool uniform = true, accumulate = false;
    Mat hist;
    calcHist(&src, 1, 0, Mat(), hist, 1, &histSize, &histRange, uniform, accumulate);

    // 归一化直方图
    int rows = hist.rows, cols = hist.cols;
    float sum = 0;
    for (int i = 0; i < rows; i++)
    {
        sum += hist.at<float>(i, 0);
    }
    Mat hist_norm = Mat::zeros(histSize, 1, CV_32FC1);
    for (int i = 0; i < rows; i++)
    {
        hist_norm.at<float>(i, 0) = hist.at<float>(i, 0) / sum;
    }

    // 计算累积分布函数
    Mat cdf = Mat::zeros(histSize, 1, CV_32FC1);
    float cdf_sum = 0;
    for (int i = 0; i < rows; i++)
    {
        cdf_sum += hist_norm.at<float>(i, 0);
        cdf.at<float>(i, 0) = cdf_sum;
    }

    // 映射像素值
    dst = src.clone();
    for (int i = 0; i < src.rows; i++)
    {
        for (int j = 0; j < src.cols; j++)
        {
            int pixel = src.at<uchar>(i, j);
            dst.at<uchar>(i, j) = cdf.at<float>(pixel, 0) * 255;
        }
    }
}