Fast JPEG encoding for color fax using HVQ

Ricardo L. de Queiroz; Patrick Fleckenstein

doi:10.1117/12.382990

19 April 2000 Fast JPEG encoding for color fax using HVQ

Ricardo L. de Queiroz, Patrick Fleckenstein

Proceedings Volume 3974, Image and Video Communications and Processing 2000; (2000) https://doi.org/10.1117/12.382990
Event: Electronic Imaging, 2000, San Jose, CA, United States

Abstract

We derive a JPEG compliant image compressor which is based on hierarchical vector quantization (HVQ). The goal is to reduce complexity while increasing compression speed. For each block, the DCT DC coefficient is encoded in the regular way while the residual is mapped through HVQ to a pre-computed bit-stream corresponding to the compressed DCT AC coefficients. Approximation quality is generally good for high compression ratios. Color Fax is the primary application target for the proposed system.

Citation Download Citation

Ricardo L. de Queiroz and Patrick Fleckenstein "Fast JPEG encoding for color fax using HVQ", Proc. SPIE 3974, Image and Video Communications and Processing 2000, (19 April 2000); https://doi.org/10.1117/12.382990

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