《学习OpenCV》练习题第三章第二题

 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 #define ROWS 400

21 #define COLS 400

22 

23 /*

24  *《学习OpenCV》第三章第二题

25  * 完成时间：0:22 3/2 星期六 2013

26  */

27 int main()

28 {

29     // 创造一个三通道二维矩阵，大小为ROWS*COLS

30     CvMat* mat = cvCreateMat(ROWS, COLS, CV_8UC3);

31     

32     // 将所有数值初始化为零 

33     for(int i = 0; i < mat->cols; i++)

34     {

35         for(int j = 0;j < mat->rows; j++)

36         {

37             cvSet2D(mat, i, j, cvScalarAll(0));

38         }

39     }

40 

41     // 画一个圆

42     cvCircle(mat, cvPoint(ROWS/2, COLS/2), ROWS/4, cvScalar(255, 255, 0), 3, 8, 0);

43 

44     // 显示图像

45     cvShowImage("img", mat);

46     cvWaitKey(0);

47 

48     cvReleaseMat(&mat);

49     cvDestroyAllWindows();

50 

51     return 0;

52 }

运行结果：