145926.fig.003a
(a)
145926.fig.003b
(b)
145926.fig.003c
(c)
145926.fig.003d
(d)
145926.fig.003e
(e)
Figure 3: (a) A noisy image. (b) Its edge map given by Canny operator without any preprocessing. (c)–(e) are the edge maps of the given by Canny operator on the diffused images after applying the proposed method, TV, and the Perona-Malik methods, respectively.