第OpenCV實現(xiàn)最小外接正矩形本文實例為大家分享了OpenCV實現(xiàn)最小外接正矩形的具體代碼，供大家參考，具體內(nèi)容如下

#include"stdafx.h"

#include"cv.h"

#include"highgui.h"

#include"cxcore.h"

#include"math.h"

#includeiostream.h

intmain(intargc,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);

inthei=src-height;

intwid=src-width;

uchar*data;

data=(uchar*)src-imageData;

intwidstep=src-widthStep;

intchannel=src-nChannels;

dst=cvCreateImage(cvSize(wid,hei),IPL_DEPTH_8U,3);

ROI=cvCreateImage(cvSize(wid,hei),IPL_DEPTH_8U,3);

for(inti=0;ii++)

for(intj=0;jj++)

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("圖像的高為：%d,寬為：%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)

doublelength=cvArcLength(contour);

doublearea=fabs(cvContourArea(contour));

CvRectrect=cvBoundingRect(contour,1);

cout"Length="length"Area="areaendl;

CvPointp1;

CvPointp2;

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);

return0;

}

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