MFC+OPENCV實(shí)現(xiàn)角點(diǎn)檢測(cè):

// 角點(diǎn)檢測(cè) // 根據(jù)《基于OpenCV的計(jì)算機(jī)視覺(jué)技術(shù)實(shí)現(xiàn)》#define max_corners 200; // 限定的最大角點(diǎn)數(shù)IplImage* srcImage = 0; // 待處理的源圖像 IplImage* ImageShow = 0; // 存儲(chǔ)顯示帶角點(diǎn)的圖像 IplImage* grayImage = 0; // 原始圖像轉(zhuǎn)換成的灰階圖像 IplImage* corners1 = 0; // 臨時(shí)圖像 IplImage* corners2 = 0; // 臨時(shí)圖像int cornerCount0 = max_corners; int cornerCount; // 實(shí)際測(cè)得角點(diǎn)數(shù) int qualityLevel = 0; // 最小質(zhì)量因子 int minDistance = 15; // 角點(diǎn)最小距離 CvScalar color = CV_RGB(255,0,0); // 繪圖顏色 CvPoint2D32f corners[200]; // 角點(diǎn)坐標(biāo) CvRect ROI_rect; // 測(cè)試范圍 char chek_area_state = 0; // 鼠標(biāo)狀態(tài)void re_find_corners(int) // 滑動(dòng)條響應(yīng)函數(shù) {int i,x,y,xl,yu,xr,yd,k;int radius = 5;int thickness = 1;double quality_level = (double) qualityLevel / 100 + 0.02;double min_distance = (double) minDistance;cornerCount=cornerCount0; // 設(shè)置最大角點(diǎn)數(shù)cvGoodFeaturesToTrack(grayImage, // 角點(diǎn)檢測(cè)corners1,corners2,corners,&cornerCount,quality_level,min_distance,NULL);if (cornerCount>0) { // 測(cè)到角點(diǎn)xl=ROI_rect.x; yu=ROI_rect.y; // 設(shè)置初始測(cè)試范圍xr=ROI_rect.x+ROI_rect.width;yd=ROI_rect.y+ROI_rect.height;cvCopy(srcImage,ImageShow); // 恢復(fù)源圖像for (i=0,k=0;i<cornerCount;i++) {x=(int)corners[i].x;y=(int)corners[i].y;if ((xl<x)&&(x<xr)&&(yu<y)&&(y<yd)) { // 范圍檢查corners[k].x=corners[i].x; // 保存范圍內(nèi)角點(diǎn)corners[k].y=corners[i].y;k++;}}cornerCount=k; // 范圍內(nèi)角點(diǎn)數(shù)cvCopy(srcImage,ImageShow);for (i=0;i<cornerCount;i++) {x=(int)corners[i].x;y=(int)corners[i].y;cvCircle(ImageShow,cvPoint(x,y), // 角點(diǎn)處畫(huà)圈radius,color,thickness,CV_AA,0);}cvRectangle(ImageShow,cvPoint(xl,yu),cvPoint(xr,yd),CV_RGB(0,255,0),thickness,CV_AA,0); // 畫(huà)矩形cvShowImage("image", ImageShow); // 顯示畫(huà)圈圖像} }void on_mouse2(int event,int x,int y,int flags,void* param) { // 鼠標(biāo)響應(yīng)函數(shù)int thickness = 1;CvPoint point1,point2;if (event == CV_EVENT_LBUTTONDOWN) { // 鼠標(biāo)左鍵按下ROI_rect.x = x; // 記錄檢測(cè)窗口一角坐標(biāo)ROI_rect.y = y;chek_area_state = 1; // 設(shè)置狀態(tài)標(biāo)志}else if (chek_area_state && event == CV_EVENT_MOUSEMOVE) { // 鼠標(biāo)移動(dòng)cvCopy(srcImage,ImageShow); // 恢復(fù)原始圖像point1 = cvPoint(ROI_rect.x, ROI_rect.y);point2 = cvPoint(x,y); // 當(dāng)前坐標(biāo)cvRectangle(ImageShow,point1,point2,CV_RGB(0,255,0),thickness,CV_AA,0); // 畫(huà)矩形cvShowImage("image", ImageShow); // 顯示檢測(cè)結(jié)果cvWaitKey(20); // 延時(shí)}else if (chek_area_state && event == CV_EVENT_LBUTTONUP) { // 鼠標(biāo)左鍵抬起ROI_rect.width = abs(x - ROI_rect.x); // 記錄檢測(cè)窗口對(duì)角坐標(biāo)ROI_rect.height = abs(y - ROI_rect.y);re_find_corners(0); // 角點(diǎn)檢測(cè)chek_area_state = 0; // 恢復(fù)狀態(tài)標(biāo)志cvWaitKey(20); } }void CCVMFCView::OnCornersTest() // 角點(diǎn)檢測(cè) {if (workImg->nChannels>1) { // 原圖為真彩色圖像==3srcImage = cvCloneImage(workImg);}else { // 原圖為灰階圖像srcImage = cvCreateImage(cvGetSize(workImg),IPL_DEPTH_8U,3);cvCvtColor(workImg,srcImage,CV_GRAY2BGR);}cvFlip(srcImage);grayImage = cvCreateImage(cvGetSize(srcImage),IPL_DEPTH_8U,1);cvCvtColor(srcImage,grayImage,CV_BGR2GRAY); // 轉(zhuǎn)換為灰階圖像ImageShow = cvCloneImage(srcImage);ROI_rect.x =0;ROI_rect.y =0;ROI_rect.width = grayImage->width;ROI_rect.height = grayImage->height;corners1 = cvCreateImage(cvGetSize(grayImage),IPL_DEPTH_32F,1);corners2 = cvCreateImage(cvGetSize(grayImage),IPL_DEPTH_32F,1);cvNamedWindow("image",0); // 設(shè)置顯示窗口cvResizeWindow("image",325,350); // 改變窗口尺寸cvCreateTrackbar("角點(diǎn)最小距離", "image", // 設(shè)置距離滑動(dòng)條&minDistance, 200,re_find_corners);cvCreateTrackbar("最小質(zhì)量因子","image", // 設(shè)置質(zhì)量滑動(dòng)條&qualityLevel,100,re_find_corners);re_find_corners(0); // 角點(diǎn)檢測(cè)cvSetMouseCallback("image",on_mouse2,0); // 設(shè)置鼠標(biāo)響應(yīng)函數(shù)cvWaitKey(0); // 等待鍵輸入cvDestroyWindow( "image" ); // 關(guān)閉窗口cvReleaseImage(&srcImage); // 釋放圖像存儲(chǔ)單元cvReleaseImage(&grayImage);cvReleaseImage(&corners1);cvReleaseImage(&corners2);cvFlip(ImageShow);m_dibFlag=imageReplace(ImageShow,&workImg); // 輸出檢測(cè)結(jié)果m_ImageType=-2;Invalidate(); }

from:?http://blog.csdn.net/abcjennifer/article/details/7315220

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