opencv 图像载入、显示和输出

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#include <opencv2/core/core.hpp>#include <opencv2\highgui\highgui.hpp>using namespace cv;int main(){//图像载入和显示Mat girl = imread("girl.jpg");namedWindow("【1】动漫图");imshow("【1】动漫图", girl);//waitKey(0);//初级图像融合Mat image = imread("dota.jpg");Mat logo = imread("dota_logo.jpg");namedWindow("【2】原画图");imshow("【2】原画图", image);namedWindow("【3】logo图");imshow("【3】logo图",logo);//waitKey(0);////找出Roi////方法一Mat imageROI;imageROI = image(Rect(800, 350, logo.cols, logo.rows));////方法二////imageROI = image(Range(350, 350 + logo.rows), Range(800, 800 + logo.cols));addWeighted(imageROI, 0.5, logo, 0.3, 0., imageROI);////显示结果namedWindow("效果图");imshow("效果图", image);//图像输出imwrite("生成的图片.bmp", image);waitKey(0);return 0;}

图像输出一开始设置为jpg格式，总是报错，改为bmp格式则正确

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