Encoding and estimation of first- and second-order binocular disparity in natural images
| Autor: | Ross Goutcher, Paul B. Hibbard, David Hunter |
|---|---|
| Přispěvatelé: | BBSRC, University of St Andrews. School of Psychology and Neuroscience |
| Rok vydání: | 2016 |
| Předmět: |
Vision Disparity
Visual perception BF Psychology genetic structures Binocular summation NDAS Second-order stereopsis BF Autostereogram Binocular energy model Article 050105 experimental psychology 03 medical and health sciences 0302 clinical medicine Optics Binocular disparity Psychophysics medicine Humans 0501 psychology and cognitive sciences Computer vision Visual Cortex Vision Binocular business.industry fungi 05 social sciences food and beverages Natural images eye diseases Sensory Systems Ophthalmology Visual cortex medicine.anatomical_structure Stereopsis Depth perception Visual Perception Artificial intelligence Psychology business Binocular vision 030217 neurology & neurosurgery |
| Zdroj: | Vision Research |
| ISSN: | 0042-6989 |
| Popis: | Highlights • First- and second-order responses to natural binocular images are correlated. • Second-order mechanisms can improve the accuracy of disparity estimation. • Second-order mechanisms can extend the depth range of binocular stereopsis. The first stage of processing of binocular information in the visual cortex is performed by mechanisms that are bandpass-tuned for spatial frequency and orientation. Psychophysical and physiological evidence have also demonstrated the existence of second-order mechanisms in binocular processing, which can encode disparities that are not directly accessible to first-order mechanisms. We compared the responses of first- and second-order binocular filters to natural images. We found that the responses of the second-order mechanisms are to some extent correlated with the responses of the first-order mechanisms, and that they can contribute to increasing both the accuracy, and depth range, of binocular stereopsis. |
| Databáze: | OpenAIRE |
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