DocumentCode :
1447884
Title :
Ellipsoidal Harmonics for 3-D Shape Description and Retrieval
Author :
Mademlis, Athanasios ; Daras, Petros ; Tzovaras, Dimitrios ; Strintzis, Michael Gerassimos
Author_Institution :
Dept. of Electr. & Comput. Eng., Aristotle Univ. of Thessaloniki, Thessaloniki, Greece
Volume :
11
Issue :
8
fYear :
2009
Firstpage :
1422
Lastpage :
1433
Abstract :
In this paper, a novel approach for 3-D Shape description and retrieval based on the theory of ellipsoidal harmonics is presented. Four novel descriptors are introduced: the surface ellipsoidal harmonics descriptor, which concerns 3-D objects that are described as polygonal surfaces; the volumetric ellipsoidal harmonics descriptor, which is applicable to volumetric 3-D objects; the generalized ellipsoidal harmonics descriptor that is applied to any local 3-D object descriptors; and, finally, the combined ellipsoidal-spherical harmonics descriptor, which leads to a compact and powerful descriptor that inherits the advantages of both approaches: the rotation invariance properties of the spherical harmonics and the directional information enclosed in ellipsoidal harmonics. Experimental results performed using well-known 3-D object databases prove the retrieval efficiency of the proposed approach.
Keywords :
computational geometry; information retrieval; visual databases; 3D objects database; 3D shape description; 3D shape retrieval; combined ellipsoidal-spherical harmonics descriptor; directional information; polygonal surface; rotation invariance properties; surface ellipsoidal harmonics descriptor; volumetric ellipsoidal harmonics descriptor; 3-D object retrieval; ellipsoidal harmonics; shape description;
fLanguage :
English
Journal_Title :
Multimedia, IEEE Transactions on
Publisher :
ieee
ISSN :
1520-9210
Type :
jour
DOI :
10.1109/TMM.2009.2032690
Filename :
5256240
Link To Document :
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