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：
