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利用LBG群聚法之向量量化影像壓縮演算法

A VQ Image Compression Algorithm by Using LBG Clustering

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摘要


本論文將以向量量化(VQ)為影像特徵,探討以下兩個問題:(1)在LBG訓練時,碼簿的大小對其所得之向量量化壓縮還原之影像失真、壓縮率有何關係?(2)碼簿維度的大小對向量量化LBG壓縮之影像有何影響?針對這兩個問題,利用MATLAB設計程式,並實際地做出向量量化壓縮後的影像來做比較。

並列摘要


Two problems were discussed in this paper. One is the relation between quantities of codebook and image distortion and the relation between quantities of codebook and compression rate. The other is the relation between dimensions of codevector and image distortion and the relation between dimensions of codevector and compression rate. Detailed experiments will explain the former two problems and give good results.

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