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  • mat遍历像素并显示

    // t1.cpp : 定义控制台应用程序的入口点。
    //
    
    #include "stdafx.h"
    #include "iostream"
    #include "cv.h"
    #include "highgui.h"
    #include "opencv2/opencv.hpp"
    
    using namespace std;
    using namespace cv;
    
    int _tmain(int argc, _TCHAR* argv[])
    {
        Mat grayim(600, 800, CV_8UC1);
        Mat colorim(600, 800, CV_8UC3);
        //遍历所有像素,并设置像素值
        for ( int i = 0; i < grayim.rows; ++i )
            for (int j = 0; j < grayim.cols; ++j)
                grayim.at<uchar>(i, j) - (i + j)%255;
    
        //遍历所有像素,并设置像素值
        for ( int i = 0; i < colorim.rows; ++i)
            for ( int j = 0; j < colorim.cols; ++j)
            {
                Vec3b pixel;
                pixel[0] = i % 255;    //blue
                pixel[1] = j % 255; //green
                pixel[2] = 0;        //red
                colorim.at<Vec3b>(i, j) = pixel;
            }
            
            //显示结果
            imshow("grayim", grayim);
            imshow("colorim", colorim);
            waitKey(0);
            return 0;
    }

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  • 原文地址:https://www.cnblogs.com/david-zhao/p/5074658.html
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