OpenCV SURF function is not implemented

Question

When I try to run the sample find_obj.cpp or any OpenCV SURF program I get the following error in command prompt while executing the code. The project builds wi

Answer 1

It's not a bug. SURF is located in nonfree module. To use it you should initialize nonfree module:

    #include  
    ... 
    cv::initModule_nonfree();