opencv之WarpPerspective透视变化

// opencv2.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#include <opencv2/opencv.hpp>
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/features2d/features2d.hpp"  
#include "cv.h"
#include "highgui.h"
#include <cxcore.h>
using namespace cv;
using namespace std;




int main(int argc, char **argv)
{
  CvPoint2D32f srcTri[4], dstTri[4];
  CvMat*       warp_mat = cvCreateMat(3, 3, CV_32FC1);
  IplImage*    src = NULL;
  IplImage*    dst = NULL;

  src = cvLoadImage("test.jpg", 1);
  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;
  srcTri[3].x = src->width - 1;
  srcTri[3].y = src->height - 1;

  dstTri[0].x = src->width * 0.05;
  dstTri[0].y = src->height * 0.33;
  dstTri[1].x = src->width * 0.9;
  dstTri[1].y = src->height * 0.25;
  dstTri[2].x = src->width * 0.2;
  dstTri[2].y = src->height * 0.7;
  dstTri[3].x = src->width * 0.8;
  dstTri[3].y = src->height * 0.9;

  cvGetPerspectiveTransform(srcTri, dstTri, warp_mat);
  cvWarpPerspective(src, dst, warp_mat);

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

  cvWaitKey(0);

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



  return 0;
}