Euler vector for search and retrieval of gray-tone images.

Arijit Bishnu Bhargab B. Bhattacharya Malay Kumar Kundu C. A. Murthy Tinku Acharya Euler vector for search and retrieval of gray-tone images. 801-812 2005 35 IEEE Transactions on Systems, Man, and Cybernetics, Part B 4 http://dx.doi.org/10.1109/TSMCB.2005.846642 db/journals/tsmc/tsmcb35.html#BishnuBKMA05