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OPENCV 圖片放大、切割(分割)擷取、保存(儲存) 資料來源: https://blog.csdn.net/LordofRobots/article/details/72312704 GITHUB: https://github.com/jash-git/opencv249_image_cut_save #include #include #include #include #include #include #include #if defined(WIN32) #define TIMEB _timeb #define ftime _ftime typedef __int64 TIME_T; #else #define TIMEB timeb typedef long long TIME_T; #endif using namespace cv; using namespace std; Mat src;//input image void Pause() { printf("Press Enter key to continue..."); fgetc(stdin); } int main() { Mat input; input = imread("Lena_original.jpg"); if (!input.data) { printf("could not load image...\n"); } else { //放大 pyrUp(input, src, Size(input.cols*2, input.rows*2)); const char* window_image = "input image"; namedWindow(window_image, CV_WINDOW_AUTOSIZE); imshow(window_image, src); Rect rect00(0,0,src.cols/2,src.rows/2); //创建一个Rect框，属于cv中的类，四个参数代表x,y,width,heigh Rect rect01(0,0+src.rows/2,src.cols/2,src.rows/2); Rect rect02(0+src.cols/2,0,src.cols/2,src.rows/2); Rect rect03(0+src.cols/2,0+src.rows/2,src.cols/2,src.rows/2); Mat mat00,mat01,mat02,mat03; Mat image_cut = Mat(src, rect00); //从img中按照rect进行切割，此时修改image_cut时image中对应部分也会修改，因此需要copy mat00 = image_cut.clone(); //clone函数创建新的图片 image_cut = Mat(src, rect01); mat01 = image_cut.clone(); image_cut = Mat(src, rect02); mat02 = image_cut.clone(); image_cut = Mat(src, rect03); mat03 = image_cut.clone(); imshow("mat00", mat00); imshow("mat01", mat01); imshow("mat02", mat02); imshow("mat03", mat03); imwrite("00.png", mat00); imwrite("01.png", mat01); imwrite("02.png", mat02); imwrite("03.png", mat03); } waitKey(0); Pause(); return 0; }