Title:
【発明の名称】ベクトル量子化コードブックの生成方法
Document Type and Number:
Japanese Patent JP2001505730
Kind Code:
A
Abstract:
A data compression system using vector quantization utilises a codebook or index tables constructed by finding a small set of points in an n-dimensional space which are representative of a much larger population. The space is partitioned such that the integrals of the probability density functions over all the subspaces are approximately equal and thereafter the centre of gravity of each subspace is taken to represent the subspace population. The partitioning is effected sequentially to map n-dimensional space into one dimensional code space.
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Inventors:
Cockshot William Paul
Lambert Robert Bartholomew
Lambert Robert Bartholomew
Application Number:
JP51907598A
Publication Date:
April 24, 2001
Filing Date:
October 15, 1997
Export Citation:
Assignee:
University of Strathclyde
International Classes:
G06T9/00; H03M7/30; H04N1/41; H04N7/26; H04N19/94; (IPC1-7): H03M7/30; H04N1/41; H04N7/24
Attorney, Agent or Firm:
Masayuki Asakura