请教高手，OPENCV对图像做仿射变换

#include "stdafx.h"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/core/core.hpp"
#include
#include
#include
using namespace cv;
using namespace std;

#include
#include
#include

//#pragma comment(lib, "cv.lib")
//#pragma comment(lib, "cxcore.lib")
//#pragma comment(lib, "highgui.lib")

int main()
{
CvPoint2D32f srcTri[3], dstTri[3];
CvMat* rot_mat = cvCreateMat (2, 3, CV_32FC1);
CvMat* warp_mat = cvCreateMat (2, 3, CV_32FC1);
IplImage* src = NULL;
IplImage* dst = NULL;

src = cvLoadImage ("box.png", 1);
cvNamedWindow("src", 1);
cvShowImage("src", src);
dst = cvCloneImage (src);
dst->origin = src->origin;
cvZero (dst);

srcTri[0].x = 0;
srcTri[0].y = 0;
srcTri[1].x = src->width - 1;
srcTri[1].y = 0;
srcTri[2].x = 0;
srcTri[2].y = src->height - 1;

dstTri[0].x = src->width * 0.3;
dstTri[0].y = 0;
dstTri[1].x = src->width * 0.7;
dstTri[1].y = 0;
dstTri[2].x = src->width * 0.3;
dstTri[2].y = src->height-1;

cvGetAffineTransform (srcTri, dstTri, warp_mat);
cvWarpAffine (src, dst, warp_mat);
cvCopy (dst, src);

cvNamedWindow ("Affine_Transform", 1);
cvShowImage ("Affine_Transform", dst);

CvPoint2D32f center = cvPoint2D32f (src->width / 2, src->height / 2);
double angle = -50.0;
double scale = 0.6;
cv2DRotationMatrix (center, angle, scale, rot_mat);
cvWarpAffine (src, dst, rot_mat);

cvNamedWindow ("rotation_Transform", 1);
cvShowImage ("rotation_Transform", dst);

cvWaitKey (0);

cvReleaseImage (&src);
cvReleaseImage (&dst);
cvReleaseMat (&warp_mat);
cvReleaseMat (&rot_mat);

return 0;
}