最简单的ADABOOST人脸检测程序。COPY执行，前提是你配置OpenCV周围环境

#include "cv.h"
#include "highgui.h"
#include "stdio.h"

void main()
{
IplImage* img = NULL;
IplImage* cutImg = NULL;
CvMemStorage* storage = cvCreateMemStorage(0);
//CvHaarClassifierCascade* cascade = (CvHaarClassifierCascade*)cvLoad("data.xml", 0, 0, 0);
CvHaarClassifierCascade* cascade = (CvHaarClassifierCascade*)cvLoad("haarcascade_frontalface_alt2.xml", 0, 0, 0);
CvSeq* faces;
char save_path[100];
char path[100];
int j;
int index = -1;
for (int i = 5 ; i <= 100; i++)
{

sprintf(path,"..\\20140622jiezhen\\%d.bmp", i);
sprintf(save_path,"..\\GABCUT\\%d.bmp", i);
img = cvLoadImage(path, 0);

faces = cvHaarDetectObjects(img, cascade,  storage, 1.2, 2, 0, cvSize(25,25) );
if (faces->total == 0)
continue;
cvSetImageROI(img, *((CvRect*)cvGetSeqElem( faces, 0)));
cvSaveImage(save_path, img);
cvResetImageROI(img);

}

}