Measuring azimuth and elevation of binocular 3D motion direction

Heron, Suzanne; Lages, Martin

doi:10.1167/9.8.637

Cited by 2 publications

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“…It seems promising to investigate local motion stimuli with ambiguous motion direction such as a line or contour moving inside a circular aperture [31] because they relate to local encoding [17]–[24] and may reveal principles of 3D motion processing [32].…”

Section: Introductionmentioning

confidence: 99%

“…Large and persistent perceptual bias has been found for dot stimuli with unambiguous motion direction [27] – [29] suggesting processing strategies that are different from the three main processing models [28] – [30] . It seems promising to investigate local motion stimuli with ambiguous motion direction such as a line or contour moving inside a circular aperture [31] because they relate to local encoding [17] – [24] and may reveal principles of 3D motion processing [32] .…”

Section: Introductionmentioning

confidence: 99%

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On the Inverse Problem of Binocular 3D Motion Perception

Lages

Heron

2010

PLoS Comput Biol

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It is shown that existing processing schemes of 3D motion perception such as interocular velocity difference, changing disparity over time, as well as joint encoding of motion and disparity, do not offer a general solution to the inverse optics problem of local binocular 3D motion. Instead we suggest that local velocity constraints in combination with binocular disparity and other depth cues provide a more flexible framework for the solution of the inverse problem. In the context of the aperture problem we derive predictions from two plausible default strategies: (1) the vector normal prefers slow motion in 3D whereas (2) the cyclopean average is based on slow motion in 2D. Predicting perceived motion directions for ambiguous line motion provides an opportunity to distinguish between these strategies of 3D motion processing. Our theoretical results suggest that velocity constraints and disparity from feature tracking are needed to solve the inverse problem of 3D motion perception. It seems plausible that motion and disparity input is processed in parallel and integrated late in the visual processing hierarchy.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the Inverse Problem of Binocular 3D Motion Perception

Lages

Heron

2010

PLoS Comput Biol

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Local Constraints for the Perception of Binocular 3D Motion

Lages

Heron

Wang

Developing and Applying Biologically-Inspired Vision Systems

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The authors discuss local constraints for the perception of three-dimensional (3D) binocular motion in a geometric-probabilistic framework. It is shown that Bayesian models of binocular 3D motion can explain perceptual bias under uncertainty and predict perceived velocity under ambiguity. The models exploit biologically plausible constraints of local motion and disparity processing in a binocular viewing geometry. Results from computer simulations and psychophysical experiments support the idea that local constraints of motion and disparity processing are combined late in the visual processing hierarchy to establish perceived 3D motion direction.

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Measuring azimuth and elevation of binocular 3D motion direction

Cited by 2 publications

References 0 publications

On the Inverse Problem of Binocular 3D Motion Perception

On the Inverse Problem of Binocular 3D Motion Perception

Local Constraints for the Perception of Binocular 3D Motion

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