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Optical Engineering

Compressing bilevel images by means of a three-bit chain code
Author(s): Hermilo Sanchez-Cruz; Ramon M. Rodriguez-Dagnino
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Paper Abstract

We propose a lossless compression method based on a chain code composed of only three symbols. The method is applicable to compress 2-D binary object shapes, and it consists of representing the orthogonal direction changes of the discrete contour, corresponding to each object binary shape, by three bits of a chain code. According to our experimental results, we find that this method is suitable for the representation of bilevel images. The results are about 25% more efficient in compression than the Freeman chain code method, and an average of 29% better than the Joint Bilevel Image Experts Group (JBIG) compressor.

Paper Details

Date Published: 1 September 2005
PDF: 8 pages
Opt. Eng. 44(9) 097004 doi: 10.1117/1.2052793
Published in: Optical Engineering Volume 44, Issue 9
Show Author Affiliations
Hermilo Sanchez-Cruz, Univ. Autonoma de Aguascalientes (Mexico)
Ramon M. Rodriguez-Dagnino, Instituto Tecnológico y de Estudios Superiores de Monterrey (Mexico)


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