《学习OpenCV》练习题第三章第四题 

 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 /*
21  *《学习OpenCV》第三章第四题
22  * 完成时间：2:13 3/2 星期六 2013
23  */
24 
25 // 图像宽高宏定义
26 #define IMG_WIDTH  400
27 #define IMG_HEIGHT 400
28 
29 // 两个顶点 
30 CvPoint point1 = cvPoint(80, 20);
31 CvPoint point2 = cvPoint(160, 80);
32 
33 // Help function
34 // 检查当前点是否在要画的长方形区域内
35 bool isThePointInRectangle(int x, int y)
36 {
37     if( (x <= point2.x) && (y <= point2.y) 
38         & (x >= point1.x) && (y >= point1.y))
39         return true;
40     else 
41         return false;
42 }
43 
44 
45 int main()
46 {
47     // 创建一个三通道RGB图像
48     IplImage* image = cvCreateImage(cvSize(IMG_WIDTH, IMG_HEIGHT), 8, 3 );
49     
50     // 将矩阵元素全部置零
51     cvZero(image);
52     uchar* p;
53     for(int i = 0; i < image->height; i++)
54     {
55         for(int j = 0; j < image->width; j++)
56         {
57             p = cvPtr2D(image, i, j, 0);
58             if(isThePointInRectangle(i, j) == true)
59             {
60                 *(++p) = 255;
61             }
62         }
63     }
64     cvNamedWindow("img", 1);
65     cvShowImage("img", image);
66     cvWaitKey(0);
67 
68     cvReleaseImage(&image);
69     cvDestroyWindow("img");
70 
71     return 0; 
72 }

运行结果：

posted @ 2013-04-07 19:41  qdsclove  阅读(209)  评论(0)  编辑  收藏  举报