期刊名称：International Journal on Computer Science and Engineering
印刷版ISSN：2229-5631
电子版ISSN：0975-3397
出版年度：2010
卷号：2
期号：3
页码：517-522
出版社：Engg Journals Publications
摘要：For the year of past most three-dimensional objects are represented and mapped with spherical function. Since the mapping preserves important criteria such as geometrical information of a 3D object, the representation of a 3D shape in a suitable way is an important matter for 3D object retrieval. In many circumstances, spherical surface fitting to a 3D shape does not approximate very well, because of their limited degree of divergence by their radius only. Whereas, in the case of ellipsoid definition we get three axes, which gives us a free mapping along each of x, y and z axes . Due to higher degree of freedom ellipsoid give better approximation for a given 3D shape than sphere which lead to a less error and higher discriminant shape descriptor for retrieval of 3D shape. In this paper, we describe a new 3D shape representation method based on ellipsoid for the purpose of 3D shape retrieval. And we demonstrate our experimental result tested on standard 3D shape Princeton Shape Benchmark (PSB) database, inferring new wavelet shape descriptor of the represented 3D shape function on ellipsoid. Our experimental results proof our expectation of our proposed hypothesis.
