. 2014 Jan 29;2014:168275. doi: 10.1155/2014/168275
Copyright © 2014 Jinyan Chen.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 6.
The 13 feature curves (Δx = 5, Δy = 5, Δt = 1).