OpenCV最小外接正矩形 OpenCV实现最小外接正矩形
fancy_MSF 人气:2#include "stdafx.h" #include "cv.h" #include "highgui.h" #include "cxcore.h" #include "math.h" #include <iostream.h> int main(int argc, char* argv[]) { IplImage *src; IplImage *dst; IplImage *ROI; CvMemStorage* storage=cvCreateMemStorage(0); CvSeq* contour=0; src=cvLoadImage("I:\\test.jpg",0); cvNamedWindow("image0",1); cvShowImage("image0",src); int hei=src->height; int wid=src->width; uchar *data; data=(uchar*)src->imageData; int widstep=src->widthStep; int channel=src->nChannels; dst=cvCreateImage(cvSize(wid,hei),IPL_DEPTH_8U,3); ROI=cvCreateImage(cvSize(wid,hei),IPL_DEPTH_8U,3); for (int i=0;i<hei;i++) { for(int j=0;j<wid;j++) { if (data[i*widstep+j*channel]>120) { data[i*widstep+j*channel]=0; } else { data[i*widstep+j*channel]=255; } } } cvNamedWindow("image",0); cvShowImage("image",src); printf("图像的高为:%d,宽为:%d\n\n",hei,wid); cvCvtColor(src, dst, CV_GRAY2BGR);; cvFindContours(src,storage,&contour,sizeof(CvContour),CV_RETR_CCOMP,CV_CHAIN_APPROX_SIMPLE); for(;contour!=0;contour=contour->h_next) { double length =cvArcLength(contour); double area =fabs(cvContourArea(contour)); CvRect rect = cvBoundingRect(contour,1); cout<<"Length="<<length<<" Area="<<area<<endl; CvPoint p1; CvPoint p2; p1.x=rect.x; p1.y=rect.y; p2.x=rect.x+rect.width; p2.y=rect.y+rect.height; cout<<"p1=("<<p1.x<<","<<p1.y<<")"; cout<<"p2=("<<p2.x<<","<<p2.y<<")"<<endl; cvRectangle(dst,p1,p2,CV_RGB(255,0,0),1,8,0); } cvNamedWindow("dst",1); cvShowImage("dst",dst); cvWaitKey(0); return 0; }
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最小正矩形信息:
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