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Proceedings Paper

A Novel Method For Compressing Images Using Discrete Directional Transforms
Author(s): G. Bjontegaard
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Paper Abstract

The main purpose of this paper is to present a coding method based on a new class of transforms that will be named Directional Transforms (DT). The idea behind using DT is, that the picture content shall determine which one out of several - 16 used here - transforms will describe the picture most efficiently. Most of the other aspects of the coding method are well known from hybrid coding schemes 2,3 - like two dimensional block transform, prediction by blockwise motion compensation and variable length coding (VLC) of transform coeffisients. It is shown that the use of DT gives both saving of bits to describe the natural images and subjectively better looking pictures due to cleaner reconstructions of edges and lines.

Paper Details

Date Published: 25 October 1988
PDF: 14 pages
Proc. SPIE 1001, Visual Communications and Image Processing '88: Third in a Series, (25 October 1988); doi: 10.1117/12.969034
Show Author Affiliations
G. Bjontegaard, Norwegian Telecommunications Administration (Norway)

Published in SPIE Proceedings Vol. 1001:
Visual Communications and Image Processing '88: Third in a Series
T. Russell Hsing, Editor(s)

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