title: Use the original BRISK implementation
body: <p>I want to use the original implementation of BRISK from the authors, since I had some issues with the implementation in OpenCV (you may see this <a href="https://stackoverflow.com/questions/23657711/performance-issues-using-brisk-detector-descriptor-opencv">question</a>). </p>
  
  <p>Now, I downloaded the library from the <a href="http://www.asl.ethz.ch/people/lestefan/personal/BRISK" rel="nofollow noreferrer">official website</a>. In Visual Studio 2012, I added the include path to the header files and the static lib files. When adding #include  to my code, a lot of compiler errors are showing.</p>
  
  <p>Since I use a version of OpenCV 3, some of the errors are caused by the changes between OpenCV 2 and 3 (CvPoint vs cv::Point, uint8_t vs CV_8UC1, etc.). On the other hand, there are errors about missing "agast/oast9_16.h" source files.</p>
  
  <p>I haven't done anything else, so maybe I miss obvious steps...</p>