《学习OpenCV》练习题第三章第七题

 1 #include "opencv_libs.h"
 2 #include <highgui.h>
 3 #include <cv.h>
 4 #include <stdio.h>
 5 
 6 #pragma comment (lib,"opencv_calib3d231d.lib")
 7 #pragma comment (lib,"opencv_contrib231d.lib")
 8 #pragma comment (lib,"opencv_core231d.lib")
 9 #pragma comment (lib,"opencv_features2d231d.lib")
10 #pragma comment (lib,"opencv_flann231d.lib")
11 #pragma comment (lib,"opencv_gpu231d.lib")
12 #pragma comment (lib,"opencv_haartraining_engined.lib")
13 #pragma comment (lib,"opencv_highgui231d.lib")
14 #pragma comment (lib,"opencv_imgproc231d.lib")
15 #pragma comment (lib,"opencv_legacy231d.lib")
16 #pragma comment (lib,"opencv_ml231d.lib")
17 #pragma comment (lib,"opencv_objdetect231d.lib")
18 #pragma comment (lib,"opencv_ts231d.lib")
19 #pragma comment (lib,"opencv_video231d.lib")
20 
21 /*
22  *《学习OpenCV》第三章第五题
23  * 完成时间：0:41 3/3 星期日  2013
24  */
25 
26 int main()
27 {
28     // 加载一个三通道的彩色图像
29     IplImage * srcImage = cvLoadImage("lena.bmp", 1);
30 
31     // 分割成R, G, B三个单通道图像
32     IplImage* red_plane = cvCreateImage(cvGetSize(srcImage), srcImage->depth, 1);
33     IplImage* green_plane = cvCreateImage(cvGetSize(srcImage), srcImage->depth, 1);
34     IplImage* blue_plane = cvCreateImage(cvGetSize(srcImage), srcImage->depth, 1);
35 
36     // 分离RGB图像的顺序为 B, G, R
37     cvSplit(srcImage, blue_plane, green_plane, red_plane,  NULL);
38 
39     // 克隆绿图两次
40     IplImage* clone1 = cvCloneImage(green_plane);
41     IplImage* clone2 = cvCloneImage(green_plane);
42 
43     // 找到绿色平面的最大值和最小值
44     double dMaxValue, dMinValue;
45     cvMinMaxLoc(green_plane, &dMinValue, &dMaxValue, NULL, NULL, NULL);
46     printf("Max: %f\tMin: %f\n", dMaxValue, dMinValue);
47 
48     // 将clone1的所有元素赋值为thresh = (unsigned char)((max - min)/2))
49     unsigned char thresh = (dMaxValue - dMinValue)/2;
50     cvSet(clone1, cvScalarAll(thresh), 0);
51     // 将clone2的所有元素赋零
52     cvSet(clone2, cvScalarAll(0), 0);
53 
54     // 生成掩码图像
55     cvCmp(green_plane, clone1, clone2, CV_CMP_GE);
56 
57     // 显示结果
58     cvSubS(green_plane, cvScalarAll(thresh/2), green_plane, clone2 );
59 
60     cvShowImage("clone1", clone1);
61     cvShowImage("clone2", clone2);
62 
63     cvShowImage("红", red_plane);
64     cvShowImage("绿", green_plane);
65     cvShowImage("蓝", blue_plane);
66     cvShowImage("原始图像", srcImage);
67     
68     cvvWaitKey(0);
69 
70     cvReleaseImage(&srcImage);
71     cvReleaseImage(&red_plane);
72     cvReleaseImage(&green_plane);
73     cvReleaseImage(&blue_plane);
74     cvReleaseImage(&clone1);
75     cvReleaseImage(&clone2);
76     cvDestroyAllWindows();
77     return 0;
78 }
运行结果：