title: Nonfree module is missing in OpenCV 3.0
body: <p>I have built the openCV 3.0 alpha version from source with support for CUDA and TBB. Now, I want to do feature detection and feature matching using SURF algorithm. SurfFeatureDetector is present in the include file</p>
  
  <blockquote>
    <p>opencv2/nonfree/features2d.hpp &amp; opencv2/nonfree/features2d.hpp</p>
  </blockquote>
  
  <p>But the module nonfree is missing in this version of openCV. I tried checking the opencv forums at answers.opencv.org but the site is under construction. </p>
  
  <p>How to use the non free modules? </p>