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Boundary Shape Recognition Using Accumulated Length and Angle Information

Marçal Rusiñol 1 Philippe Dosch 2 Josep Lladós 1
2 QGAR - Querying Graphics through Analysis and Recognition
INRIA Lorraine, LORIA - Laboratoire Lorrain de Recherche en Informatique et ses Applications
Abstract : In this paper we present a method to recognize shapes by analyzing a polygonal approximation of their boundaries. The method is independent of the used approximation method since its recognition strategy does not rely on the number of segments composing the shape. Length and turning angle information are extracted from the chain of segments. The comparison method is invariant to scale, translation and some occlusions of the extracted contour. A simple pre-processing method, also based on arc-length features, is presented to be used as a coarse fitting method to determine angle rotation and as a first filter to eliminate non pertinent candidates.
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https://hal.inria.fr/inria-00142213
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Submitted on : Tuesday, July 17, 2007 - 7:00:01 AM
Last modification on : Monday, March 29, 2021 - 11:50:03 AM
Long-term archiving on: : Wednesday, April 7, 2010 - 12:01:43 AM

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Marçal Rusiñol, Philippe Dosch, Josep Lladós. Boundary Shape Recognition Using Accumulated Length and Angle Information. Third Iberian Conference on Pattern Recognition and Image Analysis - IbPRIA 2007, Jun 2007, Girona, Spain. pp.210-217, ⟨10.1007/978-3-540-72849-8_27⟩. ⟨inria-00142213⟩

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