cvWarpAffine( src, dst, warp_mat ); //对图像做仿射变换

ゝ一纸荒年。 2022-07-15 00:11 174阅读 0赞

\#include <stdio.h>  
\#include "opencv2/core/core.hpp"  
\#include "opencv2/features2d/features2d.hpp"  
\#include "opencv2/highgui/highgui.hpp"  
\#include "opencv2/nonfree/nonfree.hpp"  
\#ifndef \_DEBUG  
\#pragma  comment(lib,"IlmImf.lib")    
\#pragma  comment(lib,"libjasper.lib")     
\#pragma  comment(lib,"libjpeg.lib")    
\#pragma  comment(lib,"libpng.lib")        
\#pragma  comment(lib,"libtiff.lib")   
\#pragma  comment(lib,"zlib.lib")    
\#pragma  comment(lib,"opencv\_calib3d2411.lib")  
\#pragma  comment(lib,"opencv\_contrib2411.lib")  
\#pragma  comment(lib,"opencv\_core2411.lib")  
\#pragma  comment(lib,"opencv\_features2d2411.lib")  
\#pragma  comment(lib,"opencv\_flann2411.lib")  
\#pragma  comment(lib,"opencv\_gpu2411.lib")  
\#pragma  comment(lib,"opencv\_highgui2411.lib")  
\#pragma  comment(lib,"opencv\_imgproc2411.lib")  
\#pragma  comment(lib,"opencv\_legacy2411.lib")  
\#pragma  comment(lib,"opencv\_ml2411.lib")  
\#pragma  comment(lib,"opencv\_nonfree2411.lib")  
\#pragma  comment(lib,"opencv\_objdetect2411.lib")  
\#pragma  comment(lib,"opencv\_ocl2411.lib")  
\#pragma  comment(lib,"opencv\_photo2411.lib")  
\#pragma  comment(lib,"opencv\_stitching2411.lib")  
\#pragma  comment(lib,"opencv\_superres2411.lib")  
\#pragma  comment(lib,"opencv\_ts2411.lib")  
\#pragma  comment(lib,"opencv\_video2411.lib")  
\#pragma  comment(lib,"opencv\_videostab2411.lib")  
\#else  
\#pragma  comment(lib,"zlibd.lib")  
\#pragma  comment(lib,"IlmImfd.lib")  
\#pragma  comment(lib,"libjasperd.lib")  
\#pragma  comment(lib,"libjpegd.lib")  
\#pragma  comment(lib,"libpngd.lib")  
\#pragma  comment(lib,"libtiffd.lib")  
\#pragma  comment(lib,"opencv\_calib3d2411d.lib")  
\#pragma  comment(lib,"opencv\_contrib2411d.lib")  
\#pragma  comment(lib,"opencv\_core2411d.lib")  
\#pragma  comment(lib,"opencv\_features2d2411d.lib")  
\#pragma  comment(lib,"opencv\_flann2411d.lib")  
\#pragma  comment(lib,"opencv\_gpu2411d.lib")  
\#pragma  comment(lib,"opencv\_highgui2411d.lib")  
\#pragma  comment(lib,"opencv\_imgproc2411d.lib")  
\#pragma  comment(lib,"opencv\_legacy2411d.lib")  
\#pragma  comment(lib,"opencv\_ml2411d.lib")  
\#pragma  comment(lib,"opencv\_nonfree2411d.lib")  
\#pragma  comment(lib,"opencv\_objdetect2411d.lib")  
\#pragma  comment(lib,"opencv\_ocl2411d.lib")  
\#pragma  comment(lib,"opencv\_photo2411d.lib")  
\#pragma  comment(lib,"opencv\_stitching2411d.lib")  
\#pragma  comment(lib,"opencv\_superres2411d.lib")  
\#pragma  comment(lib,"opencv\_ts2411d.lib")  
\#pragma  comment(lib,"opencv\_video2411d.lib")  
\#pragma  comment(lib,"opencv\_videostab2411d.lib")  
\#endif

using namespace cv;

\#include <opencv/highgui.h>   
\#include <opencv/cv.h>

int main(int argc, char\*\* argv)   
\{   
 CvPoint2D32f srcTri\[3\], dstTri\[3\]; //二维坐标下的点，类型为浮点   
 CvMat\* rot\_mat = cvCreateMat( 2, 3, CV\_32FC1 );  //多通道矩阵   
 CvMat\* warp\_mat = cvCreateMat( 2, 3, CV\_32FC1 );   
 IplImage \*src, \*dst;   
   
 if( argc == 2 && ( ( src = cvLoadImage( argv\[1\], 1 ) ) != 0 ) )   
 \{   
     dst = cvCloneImage( src );  //制作图像的完整拷贝   
     dst ->origin = src ->origin;     
     /\*  
  int origin; /\* 0 - 顶—左结构,  
  1 - 底—左结构 (Windows bitmaps 风格)   
  \*/   
  cvZero( dst );  //清空数组   
    
  //计算矩阵仿射变换   
  srcTri\[0\].x = 0;   
  srcTri\[0\].y = 0;   
  srcTri\[1\].x = src -> width - 1;  //缩小一个像素   
  srcTri\[1\].y = 0;   
  srcTri\[2\].x = 0;   
  srcTri\[2\].y = src -> height - 1;   
    
  //改变目标图像大小   
  dstTri\[0\].x = src -> width \* 0.0;   
  dstTri\[0\].y = src -> height \* 0.33;   
  dstTri\[1\].x = src -> width \* 0.85;   
  dstTri\[1\].y = src -> height \* 0.25;   
  dstTri\[2\].x = src -> width \* 0.15;   
  dstTri\[2\].y = src -> height \* 0.7;   
  cvGetAffineTransform( srcTri, dstTri, warp\_mat );  //由三对点计算仿射变换    
  cvWarpAffine( src, dst, warp\_mat );  //对图像做仿射变换   
  //输出   
  cvNamedWindow( "Affine\_Transform1", 1 );   
  cvShowImage( "Affine\_Transform1", dst );  //最终是输出dst    
  cvWaitKey();

//cvCopy( dst, src );  //将dst拷贝给src   
    
  //计算旋转仿射变换   
  CvPoint2D32f center = cvPoint2D32f( src -> width / 2, src -> height / 2 );   
  double angle =30.0;// -50.0; //旋转角度，负值表示顺时针   
  double scale = 0.9;//0.6;  //各项同性的尺度因子    
  cv2DRotationMatrix( center, angle, scale, rot\_mat );   
  cvWarpAffine( src, dst, rot\_mat );  //将src仿射变换存入dst   
    
  //输出   
  cvNamedWindow( "Affine\_Transform2", 1 );   
  cvShowImage( "Affine\_Transform2", dst );  //最终是输出dst    
  cvWaitKey();   
 \}   
 cvReleaseImage( &dst );   
 cvReleaseMat( &rot\_mat );   
 cvReleaseMat( &warp\_mat );   
 return 0;   
\}