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| Research article summary (published 30 Dec 2001): |
A contour propagation approach to surface filling-in and volume formation.
Full Abstract
A new approach to surface and volume formation is introduced in response to the question, "Why do some silhouettes look 3 dimensional (3D) and others look 2D?" The central idea is that form information can propagate away from a "propagable segment" (PS) of occluding contour that could have projected onto the image from the visible portion of a cross-section of a surface. A key property of a PS is that it exhibits abrupt curvature changes where it meets the rest of the occluding contour. An algorithm is described for filling in curved surfaces from a
PS:
When copies of a PS are propagated into the interior, they act as cross-sectional surface contours that also exhibit abrupt curvature changes with the rest of the occluding contour. The result is a nonmetric coding of 3D-shape in terms of local ordinal surface curvature and orientation relationships that is scale, translation, and rotation invariant.
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Author information
Author/s: Tse, Peter Ulric (PU);
Affiliation: Max Planck Institute for Biological Cybernetics, Tübingen, Germany. peter.tse(-atsign-)dartmouth.edu
Journal and publication information
Publication Type: Journal Article; Research Support, Non-U.S. Gov't
Journal: Psychological review (Psychol Rev), published in United States. (Language: eng)
Reference: 2002-Jan; vol 109 (issue 1) : pp 91-115
Dates: Created 2002/02/26; Completed 2002/03/12; Revised 2006/11/15;
PMID: 11863043, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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