Opencv图片明暗处理

Opencv图片明暗处理

#include <iostream>

#include <opencv2/opencv.hpp>

using namespace std;

using namespace cv;

//图片明暗处理

cv::Mat shadingTreatment(cv::Mat imgParam);

int main()

{

    double alpha; //对比度

    int beta;     //亮度

    //Mat image = imread("F:\\OpencvProject\\CamerasAndSurveillance201910\\x64\\Debug\\face_data\\20191025143712025.jpg");

    Mat image = imread("D:\\images\\特朗普\\0.jpg");

    if (image.empty())

    {

        return ;

    }

    cv::Mat new_image = shadingTreatment(image);

    /// 目标图像空间预分配

    /// 显示图像

    imshow("原图像", image);

    imshow("新图像", new_image);

    /// 等待键盘事件

    waitKey();

    return ;

}

//图片明暗处理

cv::Mat shadingTreatment(cv::Mat imgParam)

{

    Mat new_image = Mat::zeros(imgParam.size(), imgParam.type());

    /// 输入初始化值

    //cout << "请输入对比度1-3： ";

    //cin >> alpha;

    //cout << "请输入亮度1-100： ";

    //cin >> beta;

    double alpha = 1.2;

    int beta = ;

    /// 执行变换 new_image(i,j) = alpha    * image(i,j) + beta

    for (int y = ; y < imgParam.rows; y++)

    {

        for (int x = ; x < imgParam.cols; x++)

        {

            for (int c = ; c < ; c++)

            {

                new_image.at<Vec3b>(y, x)[c] = saturate_cast<uchar>(alpha * (imgParam.at<Vec3b>(y, x)[c]) + beta);

            }

        }

    }

    return new_image;

}