Title :
Data re-ordering technique for lossless LZW continuous-tone image compression
Author :
Ng, K.S. ; Cheng, L.M.
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, Hong Kong
fDate :
9/30/1999 12:00:00 AM
Abstract :
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
Keywords :
data compression; image coding; Lempel-Ziv-Welch compression; data re-ordering technique; lossless LZW continuous-tone image compression; preprocessing stage;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19991169
