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Predictive vector quantisation for image compression

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2 Author(s)
Jyi-Chang Tsai ; Dept. of Electr. Eng., Chinese Army Acad., Kaohsiung, Taiwan ; Chaur-Heh Hsieh

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

Published in:

Electronics Letters  (Volume:34 ,  Issue: 24 )