Contrast- and illumination-invariant object recognition from active sensation

Rentschler, Ingo, Osman, Erol and Jüttner, Martin (2009). Contrast- and illumination-invariant object recognition from active sensation. Spatial vision, 22 (5), pp. 383-396.

Abstract

It has been suggested that the deleterious effect of contrast reversal on visual recognition is unique to faces, not objects. Here we show from priming, supervised category learning, and generalization that there is no such thing as general invariance of recognition of non-face objects against contrast reversal and, likewise, changes in direction of illumination. However, when recognition varies with rendering conditions, invariance may be restored, and effects of continuous learning may be reduced, by providing prior object knowledge from active sensation. Our findings suggest that the degree of contrast invariance achieved reflects functional characteristics of object representations learned in a task-dependent fashion.

Publication DOI: https://doi.org/10.1163/156856809789476128
Divisions: Life & Health Sciences > Psychology
Life & Health Sciences > Clinical and Systems Neuroscience
Life & Health Sciences > Centre for Vision and Hearing Research
Uncontrolled Keywords: object recognition,invariant recognition,contrast reversal,direction of illumination,categorisation,Computer Vision and Pattern Recognition,Experimental and Cognitive Psychology
Full Text Link: http://www.inge ... 000005/art00003
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2009-09-01
Authors: Rentschler, Ingo
Osman, Erol
Jüttner, Martin ( 0000-0003-3486-7975)

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