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AN EVALUATION OF SEVERAL MESH-GENERATION METHODS USING A SIMPLE MESH-BASED IMAGE CODER
 

Summary: AN EVALUATION OF SEVERAL MESH-GENERATION METHODS
USING A SIMPLE MESH-BASED IMAGE CODER
Michael D. Adams
Dept. of Elec. and Comp. Engineering, University of Victoria, Victoria, BC, V8W 3P6, Canada
ABSTRACT
A simple image coder based on triangle meshes is proposed, and sev-
eral mesh-generation methods are presented, some previously pro-
posed and some new. Then, our coder is used to evaluate the per-
formance of the various mesh-generation methods. One of our pro-
posed mesh-generation schemes, inspired by the work of Garland
and Heckbert, is shown to perform best. The performance of linear
and Clough-Tocher interpolation is also compared. Linear interpo-
lation is found to perform better than Clough-Tocher interpolation,
with the latter performing more poorly largely due to overshoot/un-
dershoot near image edges.
Index Terms-- image coding, triangle meshes, mesh generation,
interpolation
1. INTRODUCTION
The image representations used by most conventional image coders
employ regular sampling, such as lattice-based sampling. Due to

  

Source: Adams, Michael D. - Department of Electrical and Computer Engineering, University of Victoria

 

Collections: Engineering