Seminar "3D stereo perception and oculomotor information"

The scientific group "Mathematical and Computational Psychology" organized a seminar "3D stereo perception and oculomotor information" on 29. April. 2019.

The stereo pair of human’s eyes is spatially separated which means that the retinal images of 3D scenes will be slightly different from one another. This difference is referred to as binocular disparity. The human visual system uses binocular disparity to perceive depth within 3D scenes. It is widely assumed that the visual system needs oculomotor information about the relative orientation of the two eyes to perceiving depth on the basis of binocular disparity. Such oculomotor information can be obtained from an efference copy of the oculomotor signals, or from a 2D distribution of the vertical disparity, specifically, from the vertical component of the binocular disparity. Psychophysical studies of binocular disparity have shown that oculomotor information from the efference copy and from the vertical disparity distribution can affect the perception of depth from binocular disparity. But, these effects are too slow and too unreliable to explain the stable and reliable depth perception we have under natural viewing conditions when natural eye movements are made. In this presentation, I propose a computational model that recovers depth from a stereo-pair of retinal images without being given any oculomotor information. Based on this proposed model, I will review past studies and re-interpret their results.

Presenter: Tadamasa Sawada
Working language: English
Place: Armyanskiy per. 4c2, Moscow, #118
Date and time: 29. April between 10:40am and 12:00noon