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Conditions for viewpoint dependence and viewpoint invariance: What mechanisms are used to recognize an object?

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons84981

Tarr,  MJ
Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons83839

Bülthoff,  HH
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Tarr, M., & Bülthoff, H.(1993). Conditions for viewpoint dependence and viewpoint invariance: What mechanisms are used to recognize an object? (3).


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-ED82-C
Abstract
Is object recognition viewpoint dependent or viewpoint invariant under "everyday" conditions? While Biederman and Gerhardstein (1993) argue that viewpoint-invariant mechanisms are used almost exclusively, an analysis indicates that: 1) their conditions for immediate viewpoint invariance lack the generality to characterize everyday recognition; 2) viewpoint-dependent effects are it not the byproduct of systems other than recognition; 3) empirical evidence supports a prominent role for viewpoint-dependent mechanisms in subordindate-level discriminations; 4) geon structural descriptions provide an inadequate account of how unfamiliar exemplars of familiar categories are recognized because they are at times too stable and too sensitive with regard to the entry-level. We conclude that exemplar-based multiple-views representations may support both viewpoint-dependent and viewpoint-invariant recognition, with relevant information being applied according to context and task.