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Summary: EUROGRAPHICS 2005 / M. Alexa and J. Marks
(Guest Editors)
Volume 24 (2005), Number 3
FreeLence - Coding with Free Valences
Felix Kälberer Konrad Polthier Ulrich Reitebuch Max Wardetzky
Zuse Institute Berlin
Abstract
We introduce FreeLence, a novel and simple single-rate compression coder for triangle manifold meshes. Our
method uses free valences and exploits geometric information for connectivity encoding. Furthermore, we intro-
duce a novel linear prediction scheme for geometry compression of 3D meshes. Together, these approaches yield
a significant entropy reduction for mesh encoding with an average of 20-30% over leading single-rate region-
growing coders, both for connectivity and geometry.
Categories and Subject Descriptors (according to ACM CCS): I.3.3 [Computer Graphics]: Surface mesh compres-
sion, connectivity coding, geometry coding.
1. Introduction
Compression of digital geometry models is the answer to
an industrial demand: Ever-finer geometric detail, requir-
ing millions of vertices, is part of the everyday agenda in
the movie industry, the computer aided design (CAD) in-
dustry, and in server-sided rendering applications. Over the
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