//?opencvtest.cpp?:?entrnce?of?the?program

#include?“stdafx.h“
#include?

#include?

using?namespace?std;
using?namespace?cv;

int?main（int?argc?char**?argv）
{
	//?Declarations
	IplImage?*?pInpImg?=0;								//picture?that?waiting?for?detecting
	CvHaarClassifierCascade?*?pCascade?=?0;				//face?detector
	CvMemStorage?*?pStorage?=?0;						//?expandable?memory?buffer
	CvSeq?*?pFaceRectSeq;								//?list?of?detected?faces

	//?initializations
	pInpImg?=?cvLoadImage（“zhangxiaokang.jpg“）;			//loading?picture
	pStorage?=?cvCreateMemStorage（0）;
	pCascade?=?（CvHaarClassifierCascade?*）cvLoad
	???（“D:\\opencv\\data\\haarcascades\\haarcascade_frontalface_alt2.xml“	//classifier?provided?by?OpenCV
	???0?0?0?）;

	//?validate?that?everything?initialized?properly
	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]）;
		exit（-1）;
	}

	//to?have?some?pre-process?of?the?picture
	IplImage*?gray=cvCreateImage（cvSize（pInpImg->widthpInpImg->height）81）;			//creat?an?image?as?big?as?the?loaded?one
	IplImage*?small_img=cvCreateImage（cvSize（cvRound（pInpImg->width/1.3）cvRound（pInpImg->height/1.3））81）;	//creat