Adaptive lossy LZW algorithm for palettised image compression

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

9 Scopus Citations
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Author(s)

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Detail(s)

Original languageEnglish
Pages (from-to)852-854
Journal / PublicationElectronics Letters
Volume33
Issue number10
Publication statusPublished - 8 May 1997

Abstract

An adaptive lossy LZW algorithm is proposed for palettised image compression, that is a generalised algorithm of the conventional lossless LZW algorithm. The new algorithm employs an adaptive thresholding mechanism with human visual characteristics to constrain the distortion. With this distortion control, the compression efficiency is increased by ∼40% for natural colour images, while maintaining good subjective quality on the reconstructed image. In addition, the encoded image file format is compatible with the original GIF decoder.

Research Area(s)

  • Data compression, Image processing

Citation Format(s)

Adaptive lossy LZW algorithm for palettised image compression. / Chiang, S. W.; Po, L. M.
In: Electronics Letters, Vol. 33, No. 10, 08.05.1997, p. 852-854.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review