1 #include <highgui.h> 2 #include <cv.h> 3 #include <stdio.h> 4 5 #pragma comment (lib,"opencv_calib3d231d.lib") 6 #pragma comment (lib,"opencv_contrib231d.lib") 7 #pragma comment (lib,"opencv_core231d.lib") 8 #pragma comment (lib,"opencv_features2d231d.lib") 9 #pragma comment (lib,"opencv_flann231d.lib") 10 #pragma comment (lib,"opencv_gpu231d.lib") 11 #pragma comment (lib,"opencv_haartraining_engined.lib") 12 #pragma comment (lib,"opencv_highgui231d.lib") 13 #pragma comment (lib,"opencv_imgproc231d.lib") 14 #pragma comment (lib,"opencv_legacy231d.lib") 15 #pragma comment (lib,"opencv_ml231d.lib") 16 #pragma comment (lib,"opencv_objdetect231d.lib") 17 #pragma comment (lib,"opencv_ts231d.lib") 18 #pragma comment (lib,"opencv_video231d.lib") 19 20 /* 21 *《学习OpenCV》第三章第五题 22 * 完成时间：2:49 3/2 星期六 2013 23 */ 24 25 // 图像高宽 26 #define IMG_SIZE 420 27 28 // 边界宽度 29 #define BORDER_WIDTH 10 30 31 int main() 32 { 33 // 创建8位单通道图像 34 IplImage * image = cvCreateImage(cvSize(IMG_SIZE, IMG_SIZE), 8, 1); 35 36 // 初始化置零 37 cvZero(image); 38 39 // 灰度值 40 int value = 0; 41 // ROI区域大小 42 int rect_size = IMG_SIZE; 43 for(int length = IMG_SIZE; length >= 0 && value <= 200; length -= BORDER_WIDTH, value += 10) 44 { 45 cvSetImageROI(image, cvRect(IMG_SIZE - length, IMG_SIZE- length, rect_size, rect_size)); 46 47 rect_size -= 2 *BORDER_WIDTH; 48 cvSet(image, cvScalarAll(value)); 49 cvResetImageROI(image); 50 } 51 52 cvNamedWindow("img", 1); 53 cvShowImage("img", image); 54 55 cvWaitKey(0); 56 cvReleaseImage(&image); 57 cvDestroyAllWindows(); 58 59 return 0; 60 }
运行结果：
