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1. 发明申请

WO2011128303A3 CODING OF SIGNIFICANCE MAPS AND TRANSFORM COEFFICIENT BLOCKS 审中-公开
标题翻译：重要代码编码和变换系数块
公开(公告)号：WO2011128303A3
公开(公告)日：2012-02-02
申请号：PCT/EP2011055644
申请日：2011-04-11
申请人： FRAUNHOFER GES FORSCHUNG , WIEGAND THOMAS , KIRCHHOFFER HEINER , SCHWARZ HEIKO , NGUYEN TUNG , MARPE DETLEV
发明人： WIEGAND THOMAS , KIRCHHOFFER HEINER , SCHWARZ HEIKO , NGUYEN TUNG , MARPE DETLEV
IPC分类号： H04N7/26 , H04N7/32 , H04N7/50
CPC分类号： H04N19/18 , H04N19/124 , H04N19/129 , H04N19/13 , H04N19/136 , H04N19/139 , H04N19/176 , H04N19/46 , H04N19/50 , H04N19/51 , H04N19/59 , H04N19/61 , H04N19/70 , H04N19/91
摘要： A higher coding efficiency for coding a significance map indicating positions of significant transform coefficients within a transform coefficient block is achieved by the scan order by which the sequentially extracted syntax elements indicating, for associated positions within the transform coefficient block, as to whether at the respective position a significant or insignificant transform coefficient is situated, are sequentially associated to the positions of the transform coefficient block, among the positions of the transform coefficient block depends on the positions of the significant transform coefficients indicated by previously associated syntax elements. Alternatively, the first-type elements may be context-adaptively entropy decoded using contexts which are individually selected for each of the syntax elements dependent on a number of significant transform coefficients in a neighborhood of the respective syntax element, indicated as being significant by any of the preceding syntax elements. Even alternatively, the values are scanned in subblocks, and contexts are selected based on subblock statistics.
摘要翻译：通过扫描顺序来实现编码表示变换系数块内的有效变换系数的位置的更高的编码效率，通过该扫描顺序，顺序提取的语法元素针对变换系数块内的关联位置是否指示位置显着或无意义的变换系数位于与变换系数块的位置顺序相关，变换系数块的位置取决于由先前相关联的语法元素指示的有效变换系数的位置。或者，第一类型元素可以使用上下文自适应地熵解码，使用根据相应语法元素的邻域中的多个有效变换系数的每个语法元素分别选择的上下文，其被指示为由前面的语法元素。甚至可选地，这些值以子块扫描，并且基于子块统计信息来选择上下文。

2. 发明申请

WO2012095488A3 ENTROPY ENCODING AND DECODING SCHEME 审中-公开
标题翻译：熵编码和解码方案
公开(公告)号：WO2012095488A3
公开(公告)日：2012-12-13
申请号：PCT/EP2012050431
申请日：2012-01-12
申请人： FRAUNHOFER GES FORSCHUNG , MARPE DETLEV , NGUYEN TUNG , SCHWARZ HEIKO , WIEGAND THOMAS
发明人： MARPE DETLEV , NGUYEN TUNG , SCHWARZ HEIKO , WIEGAND THOMAS
IPC分类号： H03M7/40 , H04N7/26
CPC分类号： H03M7/00 , H03M7/40 , H03M7/4006 , H03M7/46
摘要： Decomposing a value range of the respective syntax elements into a sequence of n partitions with coding the components of z laying within the respective partitions separately with at least one by VCL coding and with at least one by PIPE or entropy coding is used to greatly increase the compression efficiency at a moderate coding overhead since the coding scheme used may be better adapted to the syntax element statistics. Accordingly, in accordance with embodiments, syntax elements are decomposed into a respective number n of source symbols s; with i=1...n, the respective number n of source symbols depending on as to which of a sequence of n partitions (1401-3) into which a value range of the respective syntax elements is sub-divided, a value z of the respective syntax elements falls into, so that a sum of values of the respective number of source symbols si yields z, and, if n>l, for all i=l...n- 1, the value of Si corresponds to a range of the ith partition.
摘要翻译：将各个语法元素的值范围分解成n个分区序列，其中使用通过VCL编码和至少一个通过PIPE或熵编码分别编码各个分区内的z的分量的各个分区的编码，以大大增加在中等编码开销下的压缩效率，因为使用的编码方案可以更好地适应语法元素统计。因此，根据实施例，语法元素被分解为相应数量的n个源符号s; 在i = 1 ... n的情况下，源符号的相应数量n取决于对各个语法元素的值范围进行细分的哪个n个分区（1401-3）中的哪一个，值z 各个语法元素的数值落入，使得源符号si的数量的和的总和产生z，并且如果n> 1，对于所有i = 1 ... n- 1，Si的值对应于一系列的第i个分区。

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