Compression rates comparison of entropy coding for three-bit chain codes of bilevel images

Luis Echávarri Aguinaga; Ricardo A. Neri-Calderón; Ramon M. Rodriguez-Dagnino

doi:10.1117/1.2771241

1 August 2007 Compression rates comparison of entropy coding for three-bit chain codes of bilevel images

Luis Echávarri Aguinaga, Ricardo A. Neri-Calderón, Ramon M. Rodriguez-Dagnino

Author Affiliations +

Optical Engineering, Vol. 46, Issue 8, 087007 (August 2007). https://doi.org/10.1117/1.2771241

Abstract

We carried out a comparative study between different entropy coding schemes applied to bilevel images. The study was centered on their application to reduce existing redundancies in the three-bit chain code used to compress bilevel images. We propose a variant of the run-length codes using joint runs of two symbols at the same time. According to our results, the number of bits needed to store chain codes is reduced more than 50% over the case that is not compressed, and a 45% improvement is achieved over the results obtained with classical Huffman coding.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Luis Echávarri Aguinaga, Ricardo A. Neri-Calderón, and Ramon M. Rodriguez-Dagnino "Compression rates comparison of entropy coding for three-bit chain codes of bilevel images," Optical Engineering 46(8), 087007 (1 August 2007). https://doi.org/10.1117/1.2771241

Published: 1 August 2007

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