opencv-压缩图片

IplImage* m_lpiImage = NULL;
IplImage* ImageResize(IplImage* src, double dResizeFactor, int interpolation /*= CV_INTER_LINEAR*/)
{
//IplImage *imgResize = 0;
if (m_lpiImage)
{
cvReleaseImage(&m_lpiImage);
m_lpiImage = NULL;
}

if (!src)
{
printf("error:image is null\n");
return m_lpiImage;
}

if (dResizeFactor < 1e-7)
{
printf("error:dResizeFactor is < 0\n");
return m_lpiImage;
}

m_lpiImage = cvCreateImage(cvSize(src->width*dResizeFactor, src->height*dResizeFactor), IPL_DEPTH_8U, 3);
printf("resize image\n");
cvResize(src, m_lpiImage, interpolation);

return m_lpiImage;
}