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Spatial Vision , Vol. 13, No. 2,3, pp. 231– 240 (2000) Ó VSP 2000. Dynamics and context dependence of visual category learning INGO RENTSCHLER and MARTIN JÜTTNER Institute of Medical Psychology, University of Munich, Munich, Germany Received 23 August 1999; accepted 14 March 2000 Abstract —Visual category learning by humans is observed within a paradigm of supervised learning. Mental representations for recognition are reconstructed from the observed data structures by tting to them predicted classi cation data obtained from similarity-based models of recognition on the one hand and machine vision systems for image understanding on the other hand. These principles are illustrated with examples concerning the dynamics and the dependence on context of processes of category learning. Keywords : Visual recognition; category learning; classi cation; recognition-by-parts;context. 1. FOCUSING IN BETWEEN IGNORANCE AND KNOWLEDGE The expert radiologist recognises the source of an image signal often immediately and without effort, while the novice sees nothing else than shades of gray. Equally extreme are positions in vision research with regard to the nature of recognition. Many assume that it is mediated by feature extraction through xed and invariant neural mechanisms, i.e. nothing is learned. Others, who are concerned with
Spatial Vision (continued as Seeing & Perceiving from 2010) – Brill
Published: Jan 1, 2000
Keywords: VISUAL RECOGNITION; RECOGNITION-BY-PARTS; CLASSIFICATION; CONTEXT; CATEGORY LEARNING
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