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Summary: PROGRESSIVE LOSSY-TO-LOSSLESS CODING OF ARBITRARILY-SAMPLED IMAGE
DATA USING THE MODIFIED SCATTERED DATA CODING METHOD
Michael D. Adams
Dept. of Elec. and Comp. Eng., University of Victoria, Victoria, BC, V8W 3P6, Canada
ABSTRACT
In earlier work, Demaret and Iske proposed the scattered data cod-
ing (SDC) method for (single-rate) coding of arbitrarily-sampled im-
age data. In this paper, several modifications to the SDC method
are proposed in order to remove some limitations of the original
scheme, improve coding efficiency, and add a progressive lossy-to-
lossless coding capability. Through experimental results, the pro-
posed method is shown to yield a significant improvement in coding
efficiency (relative to the original SDC method) as well as provide
an efficient progressive lossy-to-lossless coding capability.
Index Terms-- image coding, meshes, progressive coding
1. INTRODUCTION
In recent years, there has been a growing interest in image coding
methods that better exploit the nonstationarity and geometric proper-
ties of images. Many of these methods (e.g., [1, 2, 3, 4]) are based on
the idea of employing arbitrary sampling (i.e., sampling at an arbi-
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