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1. 发明公开

EP2664070A2 ENTROPY ENCODING AND DECODING SCHEME 有权转让
标题翻译： ENTROPY编码和解码方案
公开(公告)号：EP2664070A2
公开(公告)日：2013-11-20
申请号：EP12700329.1
申请日：2012-01-12
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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 i with i=1...n, the respective number n of source symbols depending on as to which of a sequence of n partitions (140 1-3 ) 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 s i yields z, and, if n>1; for all i=1...n-1, the value of s i corresponds to a range of the i th partition.
摘要翻译：将各个语法元素的值范围分解为n个分区的序列，其中通过VCL编码分别编码分别位于各个分区内的z分量的编码，并且通过PIPE或熵编码至少一个分别用于大大增加由于所使用的编码方案可以更好地适应语法元素统计，所以在适中的编码开销下的压缩效率。因此，语法元素被分解为i = 1的源码元si的相应数量n。。。 n，源码元的数量n取决于各个语法元素的值范围被细分成的n个分区的序列中的哪一个，各个语法元素的值z落入，对于所有i = 1，源符号的相应数量的值产生z，并且如果n> 1。。。 n-1，si的值对应于第i个分区的范围。

2. 发明公开

EP2764692A1 ENTROPY CODING BUFFER ARRANGEMENT 有权
标题翻译： BUFFER安排熵
公开(公告)号：EP2764692A1
公开(公告)日：2014-08-13
申请号：EP12770126.6
申请日：2012-10-08
申请人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： BARTNIK, Christian , BROSS, Benjamin , GEORGE, Valerie , HENKEL, Anastasia , HINZ, Tobias , KIRCHHOFFER, Heiner , MARPE, Detlev , NGUYEN, Tung , PREISS, Matthias , SCHIERL, Thomas , SCHWARZ, Heiko , SIEKMANN, Mischa , STEGEMANN, Jan , WIEGAND, Thomas
IPC分类号： H04N7/26 , H03M7/40
摘要： An encoder for encoding a sequence of symbols is described which has an assigner configured to assign a number of parameters to each symbol of the sequence of symbols based on information contained within previous symbols of the sequence of symbols; a plurality of entropy encoders each of which is configured to convert the symbols forwarded to the respective entropy encoder into a respective bitstream; and a selector configured to forward each symbol to a selected one of the plurality of entropy encoders, the selection depending on the number of parameters assigned to the respective symbol.

3. 发明公开

EP2805419A1 TRANSFORM COEFFICIENT CODING 有权转让
标题翻译： CODIERUNG UND DECODIERUNG VON TRANSFORMATIONSKOEFFIZIENTEN
公开(公告)号：EP2805419A1
公开(公告)日：2014-11-26
申请号：EP13701053.4
申请日：2013-01-21
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： NGUYEN, Tung , KIRCHHOFFER, Heiner , MARPE, Detlev
IPC分类号： H03M7/40
CPC分类号： H04N19/60 , H03M7/4018 , H03M7/4075 , H04N19/91
摘要： An idea used herein is to use the same function for the dependency of the context and the dependency of the symbolization parameter on previously coded/decoded transform coefficients. Using the same function - with varying function parameter - may even be used with respect to different transform block sizes and/or frequency portions of the transform blocks in case of the transform coefficients being spatially arranged in transform blocks. A further variant of this idea is to use the same function for the dependency of a symbolization parameter on previously coded/decoded transform coefficients for different sizes of the current transform coefficient's transform block, different information component types of the current transform coefficient's transform block and/or different frequency portions the current transform coefficient is located within the transform block.
摘要翻译：这里使用的思想是使用相同的功能用于上下文的依赖性和符号化参数对先前编码/解码的变换系数的依赖性。在变换系数被空间排列在变换块中的情况下，使用具有变化函数参数的相同函数甚至可以用于变换块的不同变换块大小和/或频率部分。该想法的另一变型是使用相同的功能来对符号化参数的依赖性对于当前变换系数的变换块的不同大小的先前编码/解码的变换系数，当前变换系数的变换块的不同信息分量类型和/ 或不同频率部分，当前变换系数位于变换块内。

4. 发明公开

EP2559244A2 CODING OF SIGNIFICANCE MAPS AND TRANSFORM COEFFICIENT BLOCKS 有权转让
标题翻译：意大利国际葡萄酒生产基金会
公开(公告)号：EP2559244A2
公开(公告)日：2013-02-20
申请号：EP11713791.9
申请日：2011-04-11
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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。

6. 发明公开

EP2721822A1 ENTROPY CODING OF MOTION VECTOR DIFFERENCES 有权转让
标题翻译： ENTROPIEKODIERUNG VON BEWEGUNGSVEKTORUNTERSCHIEDEN
公开(公告)号：EP2721822A1
公开(公告)日：2014-04-23
申请号：EP12734832.4
申请日：2012-06-18
申请人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V.
发明人： GEORGE, Valeri , BROSS, Benjamin , KIRCHHOFFER, Heiner , MARPE, Detlev , NGUYEN, Tung , PREISS, Matthias , SIEKMANN, Mischa , STEGEMANN, Jan , WIEGAND, Thomas
IPC分类号： H04N7/26 , H04N7/50 , H03M7/42
CPC分类号： H04N19/91 , H03M7/42 , H04N19/124 , H04N19/13 , H04N19/132 , H04N19/174 , H04N19/184 , H04N19/50 , H04N19/513 , H04N19/52 , H04N19/61 , H04N19/70
摘要： A decoder for decoding a video from a data stream into which syntax elements are coded using binarizations of the syntax elements, comprises an entropy decoder configured to derive a number of bins of the binarizations from the data stream using binary entropy decoding by selecting a context among different contexts and updating probability states associated with the different contexts, dependent on previously decoded portions of the data stream; a desymbolizer configured to debinarize the binarizations of the syntax elements to obtain integer values of the syntax elements; a reconstructor configured to reconstruct the video based on the integer values of the syntax elements using a quantization parameter, wherein the entropy decoder is configured to distinguish between 126 probability states and to initialize the probability states associated with the different contexts according to a linear equation of the quantization parameter, wherein the entropy decoder is configured to, for each of the different contexts, derive a slope and an offset of the linear equation from first and second four bit parts of a respective 8 bit initialization value.
摘要翻译：解码器包括熵解码器，其被配置为根据数据流的先前解码部分，根据数据流的先前解码部分，通过使用二进制熵解码从不同上下文中选择上下文并更新与不同上下文相关联的概率状态，从数据流中导出二进制数的二进制数 ; 配音器，被配置为对语法元素的二进制进行二值化以获得语法元素的整数值; 重建器，被配置为基于使用量化参数的语法元素的整数值来重建视频，其中，所述熵解码器被配置为区分126概率状态，并根据线性方程式初始化与不同上下文相关联的概率状态所述量化参数，其中所述熵解码器被配置为针对每个所述不同上下文导出所述线性方程与相应8位初始化值的第一和第四四位部分的斜率和偏移。

7. 发明公开

EP2721820A1 CONTEXT INITIALIZATION IN ENTROPY CODING 审中-公开
标题翻译：熵编码中的上下文初始化
公开(公告)号：EP2721820A1
公开(公告)日：2014-04-23
申请号：EP12728524.5
申请日：2012-06-18
申请人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V.
发明人： GEORGE, Valeri , BROSS, Benjamin , KIRCHHOFFER, Heiner , MARPE, Detlev , NGUYEN, Tung , PREISS, Matthias , SIEKMANN, Mischa , STEGEMANN, Jan , WIEGAND, Thomas
IPC分类号： H04N7/26 , H04N7/50 , H03M7/42
CPC分类号： H04N19/13 , H03M7/42 , H04N19/124 , H04N19/132 , H04N19/174 , H04N19/184 , H04N19/50 , H04N19/513 , H04N19/52 , H04N19/61 , H04N19/70 , H04N19/91
摘要： A decoder for decoding a video from a data stream into which syntax elements are coded using binarizations of the syntax elements, comprises an entropy decoder configured to derive a number of bins of the binarizations from the data stream using binary entropy decoding by selecting a context among different contexts and updating probability states associated with the different contexts, dependent on previously decoded portions of the data stream; a desymbolizer configured to debinarize the binarizations of the syntax elements to obtain integer values of the syntax elements; a reconstructor configured to reconstruct the video based on the integer values of the syntax elements using a quantization parameter, wherein the entropy decoder is configured to distinguish between 126 probability states and to initialize the probability states associated with the different contexts according to a linear equation of the quantization parameter, wherein the entropy decoder is configured to, for each of the different contexts, derive a slope and an offset of the linear equation from first and second four bit parts of a respective 8 bit initialization value.
摘要翻译：一种解码器，用于使用语法元素的二进制化对其中语法元素被编码到的数据流中的视频进行解码的解码器包括熵解码器，该熵解码器被配置为使用二进制熵解码通过选择上下文中的上下文来从数据流中导出二进制化的数量取决于数据流的先前解码的部分的不同上下文和更新与不同上下文相关联的概率状态; 去阴影器，其被配置为去语法化所述语法元素的二值化以获得所述语法元素的整数值; 被配置为使用量化参数基于所述语法元素的整数值来重建所述视频的重构器，其中所述熵解码器被配置为区分126个概率状态并且根据以下线性方程来初始化与所述不同上下文相关联的概率状态：量化参数，其中熵解码器被配置为针对不同上下文中的每一个从相应的8位初始化值的第一和第二四位部分导出线性方程的斜率和偏移量。

8. 发明公开

EP2721819A1 ENTROPY CODING SUPPORTING MODE SWITCHING 有权转让
标题翻译： ENTROPIEKODIERUNG MITUNTERSTÜTZUNGVON MODUSUMSCHALTUNG
公开(公告)号：EP2721819A1
公开(公告)日：2014-04-23
申请号：EP12728084.0
申请日：2012-06-18
申请人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V.
发明人： GEORGE, Valeri , BROSS, Benjamin , KIRCHHOFFER, Heiner , MARPE, Detlev , NGUYEN, Tung , PREISS, Matthias , SIEKMANN, Mischa , STEGEMANN, Jan , WIEGAND, Thomas
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/13 , H03M7/42 , H04N19/124 , H04N19/132 , H04N19/174 , H04N19/184 , H04N19/50 , H04N19/513 , H04N19/52 , H04N19/61 , H04N19/70 , H04N19/91
摘要： A decoder for decoding a video from a data stream into which syntax elements are coded using binarizations of the syntax elements, comprises an entropy decoder configured to derive a number of bins of the binarizations from the data stream using binary entropy decoding by selecting a context among different contexts and updating probability states associated with the different contexts, dependent on previously decoded portions of the data stream; a desymbolizer configured to debinarize the binarizations of the syntax elements to obtain integer values of the syntax elements; a reconstructor configured to reconstruct the video based on the integer values of the syntax elements using a quantization parameter, wherein the entropy decoder is configured to distinguish between 126 probability states and to initialize the probability states associated with the different contexts according to a linear equation of the quantization parameter, wherein the entropy decoder is configured to, for each of the different contexts, derive a slope and an offset of the linear equation from first and second four bit parts of a respective 8 bit initialization value.
摘要翻译：解码器包括熵解码器，其被配置为根据数据流的先前解码部分，根据数据流的先前解码部分，通过使用二进制熵解码从不同上下文中选择上下文并更新与不同上下文相关联的概率状态，从数据流中导出二进制数的二进制数 ; 配音器，被配置为对语法元素的二进制进行二值化以获得语法元素的整数值; 重建器，被配置为基于使用量化参数的语法元素的整数值来重建视频，其中，所述熵解码器被配置为区分126个概率状态，并且根据线性方程式来初始化与不同上下文相关联的概率状态所述量化参数，其中所述熵解码器被配置为针对每个所述不同上下文导出所述线性方程与相应8位初始化值的第一和第四四位部分的斜率和偏移。

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