Depth perception from pairs of overlapping cues in pictorial displays - Archive ouverte HAL
Article Dans Une Revue Spatial Vision Année : 2019

Depth perception from pairs of overlapping cues in pictorial displays

Résumé

The experiments reported herein probe the visual cortical mechanisms that control near-far percepts in response to two-dimensional stimuli. Figural contrast is found to be a principal factor for the emergence of percepts of near versus far in pictorial stimuli, especially when stimulus duration is brief. Pictorial factors such as interposition (Experiment 1) and partial occlusion (Experiments 2 and 3) may cooperate, as generally predicted by cue combination models, or compete with contrast factors in the manner predicted by the FACADE model. In particular, if the geometrical configuration of an image favors activation of cortical bipole grouping cells, as at the top of a T-junction, then this advantage can cooperate with the contrast of the configuration to facilitate a near-far percept at a lower contrast than at an X-junction. Varying the exposure duration of the stimuli shows that the more balanced bipole competition in the X-junction case takes longer exposures to resolve than the bipole competition in the T-junction case (Experiment 3).

Dates et versions

hal-02168833 , version 1 (29-06-2019)

Identifiants

Citer

Birgitta Dresp, Séverine Durand, Stephen Grossberg. Depth perception from pairs of overlapping cues in pictorial displays. Spatial Vision, 2019, 15 (3), pp.255-76. ⟨10.1163/15685680260174038⟩. ⟨hal-02168833⟩
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