1 #include <highgui.h> 2 #include <cv.h> 3 #include "opencv_libs.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》第四章第三题a 22 * 完成时间：22:17 3/30 星期六 2013 23 */ 24 25 /* 矩形框 */ 26 CvRect rect; 27 28 bool draw = false; // 标记是否在画 29 30 IplImage* img; 31 IplImage * temp; 32 IplImage * original; 33 34 void draw_rect(IplImage* img, CvRect rect) 35 { 36 cvRectangle( img, 37 cvPoint( rect.x, rect.y ), 38 cvPoint( rect.x + rect.width, rect.y + rect.height), 39 cvScalar( 0x00, 0x00, 0xff) ); 40 printf("draw "); 41 } 42 43 // 鼠标回调函数 44 void my_mouse_callback( int event, int x, int y, int flags, void* param) 45 { 46 IplImage* image = (IplImage*) param; 47 48 switch( event ) 49 { 50 case CV_EVENT_MOUSEMOVE: 51 { 52 if(draw) 53 { 54 rect.width = x - rect.x; 55 rect.height = y - rect.y; 56 } 57 } 58 break; 59 case CV_EVENT_LBUTTONDOWN: 60 { 61 draw = true; 62 rect = cvRect( x, y, 0, 0 ); 63 } 64 break; 65 case CV_EVENT_LBUTTONUP: 66 { 67 draw = false; 68 if(rect.width < 0) 69 { 70 rect.x += rect.width; 71 rect.width *= -1; 72 } 73 if(rect.height < 0) 74 { 75 rect.y += rect.height; 76 rect.height *= -1; 77 } 78 // draw 79 draw_rect(image, rect); 80 } 81 break; 82 // 在右键按下时清除 83 case CV_EVENT_RBUTTONDOWN: 84 cvCopyImage(original, img); 85 printf("clear. "); 86 break; 87 } 88 } 89 90 int main() 91 { 92 img = cvLoadImage( "lena.bmp", 1 ); 93 94 rect = cvRect( -1, -1, 0, 0); 95 96 // 副本 97 temp = cvCloneImage( img ); 98 original = cvCloneImage(img); 99 100 cvNamedWindow("draw rect"); 101 cvSetMouseCallback("draw rect", my_mouse_callback, (void*)img); 102 103 while(1) 104 { 105 cvCopyImage(img, temp); 106 107 if(draw) 108 { 109 draw_rect( temp , rect ); 110 } 111 112 cvShowImage( "draw rect", temp); 113 114 if(cvWaitKey(15) == 27) 115 break; 116 } 117 cvReleaseImage(&img); 118 cvReleaseImage(&temp); 119 cvReleaseImage(&original); 120 cvDestroyAllWindows(); 121 122 return 0; 123 }
运行结果：
