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Local Features in Natural Images via Singularity Theory


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Springer | Analysis | November 2016 | ISBN-10: 3319414704 | 255 Pages | PDF | 13.93 mb
Authors: Damon, James, Giblin, Peter, Haslinger, Gareth
Includes geometric features of objects, shade/shadow features, and apparent contours
Analyzes generic changes under viewer movement
Amply illustrated with computer generated images
Yields approach for edge detection where multiple curves meet
Employs singularity theory on semi-analytic stratified spaces
Combines singularity methods with geometry of surfaces

This monograph considers a basic problem in the computer analysis of natural images, which are images of scenes involving multiple objects that are obtained by a camera lens or a viewer's eye. The goal is to detect geometric features of objects in the image and to separate regions of the objects with distinct visual properties. When the scene is illuminated by a single principal light source, we further include the visual clues resulting from the interaction of the geometric features of objects, the shade/shadow regions on the objects, and the "apparent contours". We do so by a mathematical analysis using a repertoire of methods in singularity theory. This is applied for generic light directions of both the "stable configurations" for these interactions, whose features remain unchanged under small viewer movement, and the generic changes which occur under changes of view directions. These may then be used to differentiate between objects and determine their shapes and positions.

Number of Pages
X, 255
Number of Illustrations and Tables
57 b/w illustrations, 50 illustrations in colour
Topics
Global Analysis and Analysis on Manifolds
Mathematical Applications in Computer Science
Computer Imaging, Vision, Pattern Recognition and Graphics
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