Title :
Predictive vector quantisation for image compression
Author :
Tsai, Jyi-Chang ; Hsieh, Chaur-Heh
Author_Institution :
Dept. of Electr. Eng., Chinese Army Acad., Kaohsiung, Taiwan
fDate :
11/26/1998 12:00:00 AM
Abstract :
A new vector quantisation algorithm is presented which fully exploits the interblock correlation of an image. For an input block, a predicted block from the previously encoded data is searched. If the prediction is good enough, only a flag code is sent to the receiver. The algorithm results in a significant reduction in bit rate with better picture quality, as compared to the conventional full-search VQ
Keywords :
image coding; prediction theory; vector quantisation; bit rate; data encoding; flag code; image compression; interblock correlation; picture quality; predictive algorithm; vector quantisation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19981626
