TY - BOOK AU - Damon,James AU - Giblin,Peter AU - Haslinger,Gareth TI - Local features in natural images via singularity theory T2 - Lecture notes in mathematics SN - 9783319414706 U1 - 514.746 23 PY - 2016/// CY - Switzerland : PB - Springer KW - Singularities (Mathematics) N1 - Includes bibliographical references; 1. Introduction -- 2. Overview -- 3. Apparent Contours for Projections of Smooth Surfaces -- 4. Abstract Classification of Singularities Preserving Features -- 5. Singularity Equivalence Groups Capturing Interactions -- 6. Methods for Classification of Singularities -- 7. Methods for Topological Classification of Singularities -- 8. Stratifications of Generically Illuminated Surfaces with Geometric Features -- 9. Realizations of Abstract Mappings Representing Projection Singularities -- 10. Statements of the Main Classification Results -- 11. Stable View Projections and Transitions Involving Shade/Shadow Curves on a Smooth Surface (SC) -- 12. Transitions Involving Views of Geometric Features (FC) -- 13. Transitions Involving Geometric Features and Shade/Shadow Curves (SFC) -- 14. Classifications of Stable Multilocal Configurations and Their Generic Transitions N2 - 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 ER -