Hai
1 IplImage* printrect(IplImage *contourim) 2 { 3 4 IplImage *rectim=cvCreateImage(cvGetSize(contourim), IPL_DEPTH_8U, 3); 5 int flag=1; 6 vector<Point> points; 7 for(;contourSeq!=NULL;contourSeq=contourSeq->h_next) 8 { 9 10 11 for(int i=0;i<contourSeq->total;i++) 12 { 13 CvPoint p; 14 CvPoint* p1=(CvPoint*)cvGetSeqElem(contourSeq,i); 15 p.x=p1->x; 16 p.y=p1->y; 17 points.push_back(p); 18 19 } 20 printf("No.%d contoured has pushed back\n",flag); 21 flag++; 22 CvRect rect = boundingRect(points); 23 CvPoint pt1,pt2; 24 pt1.x=rect.x; 25 pt1.y=rect.y; 26 pt2.x=rect.x+rect.width; 27 pt2.y=rect.y+rect.height; 28 cvRectangle(contourim,pt1,pt2,CV_RGB(0,0,255)); 29 points.swap(vector<Point>());//每次使用完必须清空容器 30 } 31 rectim=contourim; 32 return rectim; 33 34 35 }
printrect
将一个轮廓的点全部置于轮廓中并画出其外接矩形后需要清空vector
points.swap(vector<Point>());
否则第二个轮廓点放入容器中会画出这两个轮廓所有点共同的外接矩形
直接运行代码
1 #include "cv.h" 2 #include "highgui.h" 3 #include <stdio.h> 4 #include <math.h> 5 #include <iostream> 6 #include <ctime> 7 //#include<vector> 8 using namespace cv; 9 CvSeq *contourSeq = NULL,*contourSeq1=NULL,*contourSeq4rect=NULL; 10 11 IplImage* ImageThreshold(IplImage* src) 12 { 13 IplImage *gray,*binaryim; 14 int height,width; 15 gray=cvCreateImage(cvGetSize(src),src->depth,1); 16 cvCvtColor(src,gray,CV_BGR2GRAY); 17 height=gray->height; 18 width=gray->width; 19 printf("The canvas‘width is :%d, height is :%d\n\n",width,height); 20 21 binaryim=cvCreateImage(cvGetSize(src),IPL_DEPTH_8U,1); 22 cvThreshold(gray,binaryim,128,255,CV_THRESH_BINARY_INV); 23 return binaryim; 24 25 } 26 27 IplImage* printlunkuo(IplImage *binaryim) 28 { 29 CvMemStorage *contourStorage=cvCreateMemStorage(); 30 CvMemStorage *contourStorage4rect=cvCreateMemStorage(); 31 cvFindContours(binaryim, contourStorage, &contourSeq, sizeof(CvContour),CV_RETR_CCOMP, CV_CHAIN_APPROX_SIMPLE, cvPoint(0, 0)); 32 33 IplImage *pOutlineImage = cvCreateImage(cvGetSize(binaryim), IPL_DEPTH_8U, 3); 34 int nLevels = 5; 35 36 cvRectangle(pOutlineImage, cvPoint(0, 0), cvPoint(pOutlineImage->width, pOutlineImage->height), CV_RGB(0,0,0), CV_FILLED); 37 cvDrawContours(pOutlineImage, contourSeq, CV_RGB(255,0,0), CV_RGB(0,255,0), nLevels,0.5); 38 39 int contourcount=0; 40 for(;contourSeq!=NULL;contourSeq=contourSeq->h_next) 41 { 42 contourcount++; 43 } 44 printf("contour count is %d\n",contourcount); 45 46 47 int pointcount=0; 48 cvFindContours(binaryim, contourStorage, &contourSeq, sizeof(CvContour),CV_RETR_CCOMP, CV_CHAIN_APPROX_SIMPLE, cvPoint(0, 0));//重置contourSeq序列 49 50 for(;contourSeq!=NULL;contourSeq=contourSeq->h_next) 51 { 52 for(int i=0;i<contourSeq->total;i++) 53 { 54 CvPoint* p=(CvPoint*)cvGetSeqElem(contourSeq,i); 55 cvCircle(pOutlineImage, *p, 1, CV_RGB(255, 255,255), 1); 56 printf("p->x=%d,p->y=%d\n",p->x,p->y); 57 pointcount++; 58 } 59 printf("point count =%d\n",pointcount); 60 pointcount=0; 61 62 } 63 cvFindContours(binaryim, contourStorage4rect, &contourSeq, sizeof(CvContour),CV_RETR_CCOMP, CV_CHAIN_APPROX_SIMPLE, cvPoint(0, 0));//重置contourSeq 64 65 return pOutlineImage; 66 67 68 69 } 70 71 IplImage* printrect(IplImage *contourim) 72 { 73 74 IplImage *rectim=cvCreateImage(cvGetSize(contourim), IPL_DEPTH_8U, 3); 75 int flag=1; 76 vector<Point> points; 77 for(;contourSeq!=NULL;contourSeq=contourSeq->h_next) 78 { 79 80 81 for(int i=0;i<contourSeq->total;i++) 82 { 83 CvPoint p; 84 CvPoint* p1=(CvPoint*)cvGetSeqElem(contourSeq,i); 85 p.x=p1->x; 86 p.y=p1->y; 87 points.push_back(p); 88 89 } 90 printf("No.%d contoured has pushed back\n",flag); 91 flag++; 92 CvRect rect = boundingRect(points); 93 CvPoint pt1,pt2; 94 pt1.x=rect.x; 95 pt1.y=rect.y; 96 pt2.x=rect.x+rect.width; 97 pt2.y=rect.y+rect.height; 98 cvRectangle(contourim,pt1,pt2,CV_RGB(0,0,255)); 99 points.swap(vector<Point>());//每次使用完必须清空容器 100 } 101 rectim=contourim; 102 return rectim; 103 104 105 } 106 107 108 109 int main(int argc,char** argv) 110 { 111 IplImage *src,*binaryim,*contourim,*rectim; 112 src=cvLoadImage("gtest2.bmp",1); 113 114 binaryim=ImageThreshold(src); 115 cvNamedWindow("Binary_image",0); 116 cvShowImage("Binary_image",binaryim); 117 118 contourim = printlunkuo(binaryim); 119 cvNamedWindow("Contour_image",0); 120 cvShowImage("Contour_image",contourim); 121 122 rectim=printrect(contourim); 123 cvNamedWindow("Rect_image",0); 124 cvShowImage("Rect_image",rectim); 125 126 127 128 cvWaitKey(0); 129 130 cvDestroyWindow("Binary_image"); 131 cvReleaseImage(&binaryim); 132 cvDestroyWindow("Contours_image"); 133 cvReleaseImage(&contourim); 134 cvDestroyWindow("Rect_image"); 135 cvReleaseImage(&rectim); 136 137 return 0; 138 139 }
The all
时间: 2024-10-01 11:53:00