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

Figure 7

The normalized graph of lines detected from the DoG edge maps of the 100 cropped samples by deviation in degrees from the horizontal orientation. Samples are from the Falling and Rising mortar lines from the Café Wall 3 × 9-T400-M16. The characteristics of the samples are provided in Figure 4, and the edge maps have four different scales ( = 8, 16, 24, and 32, based on [20]).