opencv--转换图像大小

const double scale = 0.6;

IplImage* ResizeImage(IplImage *src)
{
    // allocate memory for the dsc
IplImage* dsc = cvCreateImage(cvSize(src->width*scale, src->height*scale),
        src->depth, src->nChannels);

    // resizes Image(input array is resized to fit the output array )
    cvResize(src, dsc, CV_INTER_LINEAR);
    return dsc;

}