基于旋轉(zhuǎn)Barnes-Wall格的增益-波形矢量量化器及其在序列圖象編碼中的應(yīng)用
ROTATED BARNES-WALL LATTICE BASED VECTOR QUANTIZER AND ITS APPLICATION IN IMAGE-SEQUENCE CODING
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摘要: 本文首先提出了一種基于旋轉(zhuǎn)Barnes-Wall格的格型矢量量化器(LVQ)的構(gòu)造方法及快速量化算法,然后研究了以此LVQ為核心的增益-波形矢量量化器(GSLVQ)的實(shí)現(xiàn)方法,最后探討了GSLVQ在序列圖象編碼中的應(yīng)用方案,并給出了較好的實(shí)驗(yàn)結(jié)果。
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關(guān)鍵詞:
- 圖象編碼; 矢量量化; 格
Abstract: A new method is presented to design a rotated Barnes-Wall lattice based vector quantizer (LVQ). The construction method of the LVQ and its fast quantizing algorithm are described, then the gain-shape vector quantizer (GSLVQ) with LVQ as shape VQ is discussed. Finally the GSLVQ is used in image-sequence coding and good experimental results are obtained. -
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