opencv图片右转函数

因为需要将函数进行右转，发现opencv自带 的过于麻烦。自己写了个右转的。可以根据这个想法写出任何方向的

//函数功能，右转图片
IplImage* convertImage(IplImage* image)
{
    CvSize size = cvGetSize(image);
    IplImage* ori_image = cvCreateImage(cvSize(size.width / 2, size.height / 2), image->depth, image->nChannels);
    IplImage* cvt_image = cvCreateImage(cvSize(size.height / 2, size.width / 2), image->depth, image->nChannels);
    cvResize(image, ori_image);
    int x, y, w;
    for (y = ori_image->height; y >= 0; y--)
    {
        uchar* oriptr = (uchar*)(ori_image->imageData + y*ori_image->widthStep);
        for (x = 0; x < ori_image->width; x++)
        {
            uchar* curptr = (uchar*)(cvt_image->imageData + x*cvt_image->widthStep);
            curptr[3 * y] = oriptr[3 * x];
            curptr[3 * y + 1] = oriptr[3 * x + 1];
            curptr[3 * y + 2] = oriptr[3 * x + 2];
        }
    }
    cvReleaseImage(&image);
    cvReleaseImage(&ori_image);
    return cvt_image;
}