怎样用opencv实现图像的任意角度的旋转

Question

找了好久都没找到，网上有些图像旋转后图像都变形了....谢谢大家了

Answer 1

通过旋转矩阵啊
http://www.cnblogs.com/HappyXie/archive/2011/03/02/1969434.html

Answer 2

这是一段实现图像旋转的程序
你可以参考一下
CvPoint2D32f ptfCcenter;
CvScalar scValue;
CvSize sizeNew;
float fElement[6];
int nAngle = 30;
float fAngleR = nAngle*CV_PI/180;
COLORREF clrBack = GetSysColor(COLOR_BTNFACE); sizeNew.width = fabs((sin(fAngleR)*m_pImg->height))+fabs((cos(fAngleR)*m_pImg->width));
sizeNew.height = fabs((sin(fAngleR)*m_pImg->width))+fabs((cos(fAngleR)*m_pImg->height));
IplImage* pImgRotate = cvCreateImage(sizeNew, m_pImg->depth, m_pImg->nChannels);
CvMat matRotate = cvMat(2, 3, CV_32F, fElement); ptfCcenter.x = (m_pImg->width-1)*0.5;
ptfCcenter.y = (m_pImg->height-1)*0.5; cv2DRotationMatrix(ptfCcenter, nAngle, 1, &matRotate); fElement[2] += (pImgRotate->width-m_pImg->width)/2;
fElement[5] += (pImgRotate->height-m_pImg->height)/2; scValue.val[0] = GetRValue(clrBack);
scValue.val[1] = GetRValue(clrBack);
scValue.val[2] = GetRValue(clrBack);
scValue.val[3] = 0; cvZero(pImgRotate);
cvWarpAffine(m_pImg, pImgRotate, &matRotate, CV_INTER_LINEAR+CV_WARP_FILL_OUTLIERS, scValue);
cvReleaseImage(&m_pImg);