Title :
A comparative study of invariant descriptors for shape retrieval
Author :
Amanatiadis, A. ; Kaburlasos, V.G. ; Gasteratos, A. ; Papadakis, S.E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Democritus Univ. of Thrace, Xanthi
Abstract :
This paper presents a comparative study between scale, rotation and translation invariant descriptors for shape representation and retrieval. Specifically, we studied Fourier, angular radial transform and image moment descriptors for shape representation. Since shape is one of the most widely used image feature exploited in content-based image retrieval systems, we studied for each descriptor, the number of coefficients needed for indexing and their retrieval performance. Results showed that moment descriptors present the best performance in both terms of shape representation quality as well as in the amount of required coefficients.
Keywords :
Fourier transforms; computational geometry; content-based retrieval; image representation; image retrieval; indexing; information retrieval systems; shape recognition; Fourier descriptor; angular radial transform; content-based image retrieval system; image moment descriptor; invariant descriptor; shape indexing; shape recognition; shape representation; shape retrieval; Character recognition; Computer industry; Content based retrieval; Data mining; Electrical products industry; Fourier transforms; Image retrieval; Laboratories; Shape; Subspace constraints; Shape representation; image retrieval system; invariant descriptors; shape matching;
Conference_Titel :
Imaging Systems and Techniques, 2009. IST '09. IEEE International Workshop on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4244-3482-4
Electronic_ISBN :
978-1-4244-3483-1
DOI :
10.1109/IST.2009.5071672
