[openCV] 이미지 rotate & scale 코드

int main(){
  IplImage *imgA = cvLoadImage( "image1.jpg", 1);
  IplImage *imgB = cvCreateImage( cvGetSize( imgA), IPL_DEPTH_8U, 3);
  const double angle  = 40.0; //회전각도
  const double scale  = 1.0;  //크기
  CvPoint2D32f center = cvPoint2D32f( imgA->width/2.0, imgA->height/2.0);//회전중심설정
  CvMat *rot_mat = cvCreateMat( 2, 3, CV_32FC1);
  cv2DRotationMatrix( center, angle, scale, rot_mat); // 메트릭스 변환
  cvWarpAffine( imgA, imgB, rot_mat, CV_INTER_LINEAR+CV_WARP_FILL_OUTLIERS); // 선형보간
  cvSaveImage( "image_result8.bmp", imgB);
  cvReleaseImage( &imgA );
  cvReleaseImage( &imgB );
  cvReleaseMat( &rot_mat);
  return 0;
}