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A stereo advantage in generalizing over changes in viewpoint on object recognition tasks

Lookup NU author(s): Dr Quoc Vuong


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In four experiments, we examined whether generalization to unfamiliar views was better under stereo viewing or under nonstereo viewing across different tasks and stimuli. In the first three experiments, we used a sequential matching task in which observers matched the identities of shaded tube-like objects. Across Experiments 1–3, we manipulated the presentation method of the nonstereo stimuli (having observers wear an eye patch vs. showing observers the same screen image) and the magnitude of the viewpoint change (30º vs. 38º). Experiment 4, observers identified "easy" and "hard" rotating wire-frame objects at the individual level under stereo and nonstereo viewing conditions. We found a stereo advantage for generalizing to unfamiliar views in all the experiments. However, in these experiments, performance remained view dependent even under stereo viewing. These results strongly argue against strictly 2-D image-based models of object recognition, at least for the stimuli and recognition tasks used, and suggest that observers used representations that contained view-specific local depth information.

Publication metadata

Author(s): Bennett DJ, Vuong QC

Publication type: Article

Publication status: Published

Journal: Perception and Psychophysics

Year: 2006

Volume: 68

Issue: 7

Pages: 1082-1093

Print publication date: 01/01/2006

ISSN (print): 0031-5117

Publisher: Psychonomic Society, Inc.