Fig. 2
From: A power law study of the edge influence on the perceived filling-in brightness magnitude
Brightness magnitude perceived for circles with different contrast levels in 3 edge filtering conditions (σ = 0.3; σ = 0.8; σ = 1.5). As the filtering increases, the higher the exponent changes from 0.43 to 0.73 and to 0.97, respectively. The increasing on the power law exponent indicates the weakening of the edge influence on the brightness of the circle