利用opencv提取Hu不变量特征 形状匹配

void GetHu(string image_path)
{
IplImage *src_image = cvLoadImage(image_path.c_str(),0);

CvMoments moments;
CvHuMoments hu_moments;
cvMoments(src_image, &moments,0);
cvGetHuMoments(&moments, &hu_moments);
for(int i = 1; i < 8; ++i)
{
cout<<((double*)&hu_moments)[i]<<"\t";
}
}