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#include "cv.h"
#include "highgui.h"
#include <stdio.h>
void displaydetection(IplImage* pInpImg,CvSeq* pFaceRectSeq,char* FileName);
int main(int argc,char** argv)
{
IplImage* pInpImg=0;
CvHaarClassifierCascade* pCascade=0; //指向后面从文件中获取的分类器
CvMemStorage* pStorage=0; //存储检测到的人脸数据
CvSeq* pFaceRectSeq; //用来接收检测函数返回的一系列的包含人脸的矩形区域
if (argc<2)
{
printf("missing name of image file!\n");
return -1;
}
//初始化
pInpImg=cvLoadImage(argv[1],1);
pStorage=cvCreateMemStorage(0); //创建默认大先64k的动态内存区域
pCascade=(CvHaarClassifierCascade*)cvLoad("haarcascade_frontalface_alt.xml"); //加载分类器
if (!pInpImg||!pStorage||!pCascade)
{
printf("initialization failed:%s\n",(!pInpImg)?"can't load image file":(!pCascade)?"can't load haar-cascade---make sure path is correct":"unable to allocate memory for data storage",argv[1]);
return -1;
}
//人脸检测
pFaceRectSeq=cvHaarDetectObjects(pInpImg,pCascade,pStorage,
1.2,2,CV_HAAR_DO_CANNY_PRUNING,cvSize(40,40));
//将检测到的人脸以矩形框标出。
displaydetection(pInpImg,pFaceRectSeq,argv[1]);
cvReleaseImage(&pInpImg);
cvReleaseHaarClassifierCascade(&pCascade);
cvReleaseMemStorage(&pStorage);
return 0;
}
void displaydetection(IplImage* pInpImg,CvSeq* pFaceRectSeq,char* FileName)
{
int i;
cvNamedWindow("haar window",1);
printf("the number of face is %d",pFaceRectSeq->total);
for (i=0;i<(pFaceRectSeq?pFaceRectSeq->total:0);i++)
{
CvRect* r=(CvRect*)cvGetSeqElem(pFaceRectSeq,i);
CvPoint pt1={r->x,r->y};
CvPoint pt2={r->x+r->width,r->y+r->height};
// cvSetImageROI(pInpImg,*r);
// IplImage* dst=cvCreateImage(cvSize(92,112),pInpImg->depth,pInpImg->nChannels);
// cvResize(pInpImg,dst,CV_INTER_LINEAR);
// cvSaveImage("lian.jpg",dst);
cvRectangle(pInpImg,pt1,pt2,CV_RGB(0,255,0),3,4,0);
}
cvShowImage("haar window",pInpImg);
// cvResetImageROI(pInpImg);
cvWaitKey(0);
cvDestroyWindow("haar window");
}