Opencv c++ feature detection

#include <opencv2/opencv.hpp>
#include <opencv2/features2d.hpp>

// initialize detector 
cv::Ptr<cv::FeatureDetector> detector = cv::ORB::create();

// detect features and descriptor
std::vector<cv::KeyPoint> keypoints1;
cv::Mat descriptors1;
detector->detectAndCompute( test_im_gray, cv::Mat(), keypoints1, descriptors1 );

Similar codes

5 votes185 views3 answers
Remove space in string c++
C++
0 vote222 views1 answer
C++ multiply char
C++
3 votes201 views2 answers
Fast Inverse Square Root
C++
0 vote189 views1 answer
Ordine crescente di numeri indefiniti in c++
C++
0 vote199 views1 answer
How to clear a string in c++
C++
3 votes212 views1 answer
Differentialble programming
C++
0 vote224 views1 answer
Opencv(4.5.1) c:\users\appveyor\appdata\local\temp\1\pip-req-build-kh7iq4w7\opencv\modules\imgproc\src\resize.cpp:4051: error: (-215:assertion failed) !ssize.empty() in function
C++
0 vote205 views1 answer
Uint16_t does not name a type
C++
1 vote175 views1 answer
C++ default array value not null
C++
2 votes195 views1 answer
How to convert string to wchar_t in c++
C++