Recent developments in techniques for modeling, digitizing and visualizing 3D shapes has
led to an explosion in the number of available 3D models on the Internet and in domain …

The concept of symmetry has received significant attention in computer graphics and
computer vision research in recent years. Numerous methods have been proposed to find …

The last half century has seen the development of many biological or physical t-ories that
have explicitly or implicitly involved medial descriptions of objects and other spatial entities …

The development of effective content-based multimedia search systems is an important
research issue due to the growing amount of digital audio-visual information. In the case of …

The topic of the thesis is content-based retrieval of 3D-models by shape-similarity. In our 3D
model retrieval system a model, a polygonal mesh, serves as a query and similar objects are …

Symmetry is an important cue for many applications, including object alignment, recognition,
and segmentation. In this paper, we describe a planar reflective symmetry transform (PRST) …

We advocate the usage of 3D Zernike invariants as descriptors for 3D shape retrieval. The
basis polynomials of this representation facilitate computation of invariants under rotation …

We consider the use of medial surfaces to represent symmetries of 3-D objects. This allows
for a qualitative abstraction based on a directed acyclic graph of components and also a …

Data-driven methods serve an increasingly important role in discovering geometric,
structural, and semantic relationships between shapes. In contrast to traditional approaches …

In this paper, we present the Symmetry Descriptors of a 3D model. This is a collection of
spherical functions that describes the measure of a model's rotational and reflective …