During human scene perception, visual acuity is highest at fixation and drops off precipitously and continuously with increasing visual eccentricity. The highest quality visual information is acquired from the region of the scene projecting to the fovea, a region of the retina corresponding to about the central 20 of the viewed scene. The human visual-cognitive system takes advantage of the fovea by reorienting fixation over the viewed scene an average ...
Each time the eyes are spatially reoriented via a saccadic eye movement, the image falling on the retina changes. How visually specific are the representations that are functional across saccades during active scene perception? This question was investigated with a saccade-contingent display- change paradigm in which pictures of complex real-world scenes were globally changed in real time during eye movements. The global changes were effected by presenting each scene as ...
The goal of the research was to understand the role of contextual constraint in the visual analysis of complex, natural scenes. This issue bears directly on the basic architecture of the human visual system and has implications for the design of artificial vision systems devoted to object and scene analysis. Two hypotheses were considered: (1) Scene constraint influences the perceptual identification of individual objects; ...
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