我使用OPENCV中的ORB提取一系列图片的特征描述子descriptors和关键点Keypoints,但是提取完后发现**Keypoints.size( )=0,descriptors.size() =[0X0]**,求问这是什么原因,该怎么解决?
Ptr<ORB> orb = ORB::create();
vector<KeyPoint> Keypoints;
Mat descriptors;
Mat src = imread(files1,0);
resize(src,src,Size(48,48));
orb->detect(src, Keypoints);
orb->compute(src, Keypoints, descriptors);
cout << "key_size= " << Keypoints.size() <<endl;
cout << "orb_size= " << descriptors.size() <<endl;
运行截图