I have been trying to stitch two spherical (fish eye) images together by using opencv. I have tried there sample code: https://raw.githubusercontent.com/opencv/opencv/master/samples/cpp/stitching_detailed.cpp but it haven't given me much success (It says that it don't have sufficient features). I want to know exact steps which are required here. Do i need to defish it first? Do i need to remove these black border. I want to create Stereographic or Equirectangular projection from them. Can someone please guide me how this can be done ?