The Café Wall Illusion: Local and Global Perception from Multiple Scales to Multiscale

Figure 2

(a) Café Wall of 3 × 8 with 200 × 200 px tiles and 8 px mortar (left) and an enlarged DoG output at scale 8 ( = 8) from the edge map of the pattern (right). (b) The binary edge map at six scales ( = 4 to 24 with incremental steps of 4). (c) The same edge map but presented in the jetwhite color map [37]. The noncritical parameters of the DoG model are and (the Surround and Window ratios, resp.).

(a)

(b)

(c)