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Data re-ordering technique for lossless LZW continuous-tone image compression

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2 Author(s)
Ng, K.S. ; Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, Hong Kong ; Cheng, L.M.

A data re-ordering technique is proposed to enhance the compression performance of lossless LZW image compression over continuous-tone images. The proposed scheme incurs few overheads and functions as a preprocessing stage prior to actual compression. The compression performance is increased by an average of 18% for continuous-tone test images compared with the popular GIF compressor

Published in:

Electronics Letters  (Volume:35 ,  Issue: 20 )