title: BRISK and FREAK descriptors in MATLAB
body: <p>I'm using MATLAB 2014a for extracting <strong>BRISK</strong> and <strong>FREAK</strong> descriptors. I couldn't find any option to reduce the bit string size to <strong>128</strong> or <strong>256</strong>, they both generated as <strong>512</strong> bits. I think <strong>FREAK</strong> does not allow this by algorithm but <strong>BRISK</strong> should allow. Does anyone know if I can reduce the dimension of BRISK descriptor? If yes how can I?</p>
  
  <p>Thanks</p>