Title :
Polar representation of covariance descriptors for circular features
Author :
Gualdi, Giovanni ; Prati, Andrea ; Cucchiara, Rita
Author_Institution :
Dept. of Eng. of Mater. & the Environ., Univ. of Modena & Reggio Emilia, Modena, Italy
Abstract :
The use of polar representation of covariance descriptors, suitable for the classification of circular feature sets, is proposed. It overcomes the implicit limits of state-of-the-art methods based on axis-oriented rectangular patches. The suitability of the proposed solution is verified on two case studies, namely head detection and polymer classification in photomicrograph contexts.
Keywords :
covariance analysis; feature extraction; image classification; image representation; axis-oriented rectangular patches; circular feature sets; covariance descriptors; head detection; photomicrograph contexts; polar representation; polymer classification; state-of-the-art methods;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.0021
