Brightness induction by local contrast and the spatial dependence of assimilation
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Cited by (87)
Shadow induction on optical see-through head-mounted displays
2020, Computers and Graphics (Pergamon)Citation Excerpt :Brightness induction is a general term for the phenomena that the perceived brightness of a region is modulated by the surrounding pattern. By making the surrounding area brighter or darker, it is possible to make the perceived brightness appear darker or lighter, respectively, than the original luminance [12]. This effect has been confirmed not only in experimental environments but also in real environments [13,14].
The phantom illusion
2015, Vision ResearchCitation Excerpt :A different neural model of lightness computation, based on the principle of edge integration, was proposed by Rudd (2010) to account for the assimilation effects that he observed in his experiments with disk-ring displays (Fig. 7). The edge integration model assumes that the lightness of the target disk in a disk-ring display is computed from a weighted sum of the directed luminance steps evaluated at the inner and outer edges of the annular surround (see also Reid & Shapley, 1988; Shapley & Reid, 1985), The directed luminance step at the inner edge of the ring (i.e. the disk-ring edge) exerts a contrast effect on the disk lightness, while the directed luminance step at the remote outer edge of the ring (the ring-background edge) exerts an additional effect on the disk lightness that can have the sign of contrast or assimilation, depending on the direction of the remote luminance step (for the stimulus in Fig. 7, the luminance step in the direction of the target is negative sign of the induction effect from this edge is one of contrast). When the outer edge instead produces an assimilation effect, the magnitude of the assimilation effects tends to be weaker than the contrast effect produced by the disk-ring edge because the outer ring edge is further from the target.
Brightness appearance of self-luminous stimuli on a non-uniform background
2022, Color Research and ApplicationTowards an image-based brightness model for self-luminous stimuli
2022, Optics ExpressIsolation of brightness induction effects on target patches from adjacent surrounds and remote backgrounds
2022, Frontiers in Human Neuroscience