Abstract

This paper introduces a shape descriptor based on a com-bination of topological image analysis and texture information. Criticalpoints of a shape┬┤s skeleton are determined first. The shape is describedaccording to persistence of the local topology at these critical points overa range of scales. The local topology over scale-space is derived using thelocal binary pattern texture operator with varying radii. To visualisethe descriptor, a new type of persistence graph is defined which cap-tures the evolution, respectively persistence, of the local topology. Thepresented shape descriptor may be used in shape classification or thegrouping of shapes into equivalence classes. Classification experimentswere conducted for a binary image dataset and the promising results arepresented. Because of the use of persistence, the influence of noise orirregular shape boundaries (e.g. due to segmentation artefacts) on theresult of such a classification or grouping is bounded.

Reference

Janusch, I., & Kropatsch, W. (2016). Shape Classification according to LBP Persistence of Critical Points. In Proceedings of the 21st Computer Vision Winter Workshop (p. 12). Slovenian Pattern Recognition Society. http://hdl.handle.net/20.500.12708/56599