message: ORB: compute default norm by wta_k
diff: @@ -724,7 +724,16 @@ int ORB_Impl::descriptorType() const
  int ORB_Impl::defaultNorm() const
  {
  + switch (wta_k)
  + {
  + case 2:
  return NORM_HAMMING;
  + case 3:
  + case 4:
  + return NORM_HAMMING2;
  + default:
  + return -1;
  + }
  }
  #ifdef HAVE_OPENCL
  