1. Aghav, S., Kumar, A., Gadakar, G., Mehta, A., Mhaisane, A.: Mitigation of rotational constraints in image based plagiarism detection using perceptual hash. Int. J. Comput. Sci. Trends Technol. 2, 28–32 (2014)
2. Deng, H., Zhang, W., Mortensen, E., Dietterich, T., Shapiro, L.: Principal curvature-based region detector for object recognition. In: 2007 IEEE Conference on Computer Vision and Pattern Recognition, pp. 1–8. IEEE, June 2007
3. Krawetz, N.: Looks Like It (2011).
http://www.hackerfactor.com/blog/index.php?/archives/432-Looks-LikeIt.html
. Accessed 12 Jan 2017
4. Krawetz, N.: Kind of Like That (2013).
http://www.hackerfactor.com/blog/?/archives/529-Kind-of-Like-That.html
. Accessed 12 Jan 2017
5. Matas, J., Chum, O., Urban, M., Pajdla, T.: Robust wide-baseline stereo from maximally stable extremal regions. Image Vis. Comput. 22(10), 761–767 (2004)