1. Freak: fast retina keypoint;Alahi,2012
2. Fast explicit diffusion for accelerated features in nonlinear scale spaces;Alcantarilla,2013
3. KAZE features;Alcantarilla,2012
4. Balntas, V., Johns, E., Tang, L., Mikolajczyk, K., 2016. PN-Net: conjoined triple deep network for learning local image descriptors. arXiv preprint arXiv:1601.05030.
5. BOLD-binary online learned descriptor for efficient image matching;Balntas,2015