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What and where: a Bayesian inference theory of visual attention (2010)
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BibTeX
@MISC{Chikkerur10whatand,
author = {Sharat Chikkerur},
title = {What and where: a Bayesian inference theory of visual attention},
year = {2010}
}
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Abstract
In the theoretical framework described in this thesis, attention is part of the inference process that solves the visual recognition problem of what is where. The theory proposes a computational role for attention and leads to a model that predicts some of its main properties at the level of psychophysics and physiology. In our approach, the main goal of the visual system is to infer the identity and the position of objects in visual scenes: spatial attention emerges as a strategy to reduce the uncertainty in shape information while feature-based attention reduces the uncertainty in spatial information. Featural and spatial attention represent two distinct modes of a computational process solving the problem of recognizing and localizing objects, especially in difficult recognition tasks such as in cluttered natural scenes. We describe a specific computational model and relate it to the known functional anatomy of attention. We show that several well-known attentional phenomena – including bottom-up pop-out effects, multiplicative modulation of neuronal tuning
Keyphrases
bayesian inference theory bottom-up pop-out effect several well-known attentional phenomenon shape information multiplicative modulation computational process functional anatomy difficult recognition task localizing object specific computational model computational role feature-based attention visual scene spatial attention represent distinct mode visual system visual recognition problem theoretical framework cluttered natural scene neuronal tuning inference process spatial attention spatial information main goal main property
