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1.发明授权
公开(公告)号：US5883981A
公开(公告)日：1999-03-16
申请号：US733849
申请日：1996-10-18
申请人： Weiping Li , Qinghong Cao , Chun Wang , Kenneth K. Tzeng
发明人： Weiping Li , Qinghong Cao , Chun Wang , Kenneth K. Tzeng
CPC分类号： G06T9/008
摘要： A method is disclosed for encoding and decoding an input signal representative of video or audio information. A form of the encoding includes the following steps: processing the input signal to produce a sequence of vectors representative of the input signal; implementing a lattice vector quantization procedure on individual vectors of the sequence to identify a lattice point of a lattice that is closest to the individual vector and to obtain an index value representative of a labelling of the identified lattice point, the lattice vector quantization procedure including a multi-level allocation of groups of reserved indices, and selection of the index value for the individual vector within a group of reserved indices. The index signals representative of the index values are stored and then recovered for decoding, or transmitted before decoding. The decoding is operative to obtain a recovered sequence of vectors, and the sequence of vectors can be processed to produce an output signal.
摘要翻译： 公开了一种用于编码和解码表示视频或音频信息的输入信号的方法。 编码的形式包括以下步骤：处理输入信号以产生表示输入信号的向量序列; 对所述序列的各个向量实施格子矢量量化过程，以识别最接近所述个体矢量的格子的格点，并且获得表示所识别的格点的标记的索引值，所述格子矢量量化过程包括 保留索引组的多级分配，以及一组保留索引内各个向量的索引值的选择。 表示索引值的索引信号被存储然后被恢复用于解码，或者在解码之前传输。 解码操作以获得恢复的向量序列，并且可以处理向量序列以产生输出信号。
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2.发明授权
公开(公告)号：US5940542A
公开(公告)日：1999-08-17
申请号：US743631
申请日：1996-11-04
申请人： Weiping Li , Qinghong Cao , Chun Wang , Kenneth K. Tzeng
发明人： Weiping Li , Qinghong Cao , Chun Wang , Kenneth K. Tzeng
CPC分类号： G06T9/008
摘要： A method and apparatus is disclosed for encoding and decoding an input signal representative of video or audio information. A form of the method includes the following steps: processing the input signal to produce a sequence of vectors representative of the input signal; implementing a lattice vector quantization procedure on individual vectors of the sequence to identify a lattice point of a lattice that is closest to the individual vector and to obtain an index value representative of a labelling of the identified lattice point, the lattice vector quantization procedure including a multi-level allocation of groups of reserved indices, and selection of the index value for the individual vector within a group of reserved indices. The index signals representative of the index values are stored and/or transmitted, and then recovered for decoding. The decoding is operative to obtain a recovered sequence of vectors, and the sequence of vectors can be processed to produce an output signal.
摘要翻译： 公开了一种用于对表示视频或音频信息的输入信号进行编码和解码的方法和装置。 该方法的一种形式包括以下步骤：处理输入信号以产生表示输入信号的向量序列; 对所述序列的各个向量实施格子矢量量化过程，以识别最接近所述个体矢量的格子的格点，并获得表示所识别的格点的标记的索引值，所述格子矢量量化过程包括 保留索引组的多级分配，以及一组保留索引内各个向量的索引值的选择。 表示索引值的索引信号被存储和/或发送，然后被恢复用于解码。 解码操作以获得恢复的向量序列，并且可以处理向量序列以产生输出信号。
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