First implementation of Hanklets

This code is based on: Camps, O. I., & Sznaier, M. (2012). Cross-view
activity recognition using Hankelets. 2012 IEEE Conference on Computer
Vision and Pattern Recognition, 1362–1369.
Tools for reading dense trajectories in matlab

Dense trajectories are generated using the code by Wang et al.
downloaded from:
http://lear.inrialpes.fr/people/wang/dense_trajectories