[openvc]4.创建一张图片并保存到本地

本文实现的功能就是生成一张绿色图片，然后保存到本地。
这里也是直接贴出代码了：

#include "opencv2/highgui/highgui.hpp"#include <iostream>using namespace cv;using namespace std;int main(int argc, const char** argv){    Mat img(650, 600, CV_16UC3, Scalar(0, 50000, 0)); //创建一张图片，Blue=0,Green=50000,Red=0    if (img.empty())     {        cout << "ERROR : Image cannot be loaded..!!" << endl;        //system("pause"); //wait for a key press        return -1;    }    vector<int> compression_params; //图片参数    compression_params.push_back(CV_IMWRITE_PNG_BILEVEL); //png    compression_params.push_back(98); //图片质量    bool bSuccess = imwrite("D:/TestImage.jpg", img, compression_params); //保存到本地    if (!bSuccess)    {        cout << "ERROR : Failed to save the image" << endl;        system("pause");     }    //namedWindow("MyWindow", CV_WINDOW_AUTOSIZE);    imshow("MyWindow", img);     waitKey(0);  //wait for a keypress    destroyWindow("MyWindow"); //destroy the window with the name, "MyWindow"    return 0;}

运行效果如下：