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1. 发明申请

WO2009115901A3 COMBINED MOTION VECTOR AND REFERENCE INDEX PREDICTION FOR VIDEO CODING 审中-公开
标题翻译：组合运动矢量和参考索引预测视频编码
公开(公告)号：WO2009115901A3
公开(公告)日：2009-12-10
申请号：PCT/IB2009000550
申请日：2009-03-18
申请人： NOKIA CORP , HALLAPURO ANTTI OLLI , UGUR KEMAI , LAINEMA JANI
发明人： HALLAPURO ANTTI OLLI , UGUR KEMAI , LAINEMA JANI
IPC分类号： H04N7/26 , H04N7/34 , H04N7/36
CPC分类号： H04N19/513 , H04N19/52 , H04N19/573 , H04N19/593
摘要： A system and method for improving the coding efficiency of motion vector information in video coding. According to various embodiments, a list of motion vector predictor candidates is arranged according to predefined rules. Each motion vector also has a reference index associated with it. One of the motion vector candidates is then selected as a predictor based on predefined rules, or the selection is explicitly signaled in the bitstream. The reference index associated with the selected motion vector is used as a reference index for the current block. The reference index is predicted along with the motion vector. Such embodiments can improve the compression efficiency of modern video codecs.
摘要翻译：一种用于提高视频编码中的运动矢量信息的编码效率的系统和方法。根据各种实施例，根据预定义的规则来布置运动矢量预测器候选的列表。每个运动矢量也具有与之相关联的参考索引。然后基于预定义的规则将运动矢量候选中的一个选择为预测器，或者在比特流中明确地用信号通知选择。与所选运动矢量相关联的参考索引用作当前块的参考索引。参考索引与运动矢量一起预测。这样的实施例可以提高现代视频编解码器的压缩效率。

2. 发明申请

WO2009050557A3 FIXED-POINT IMPLEMENTATION OF AN ADAPTIVE IMAGE FILTER WITH HIGH CODING EFFICIENCY 审中-公开
公开(公告)号：WO2009050557A3
公开(公告)日：2009-04-23
申请号：PCT/IB2008/002709
申请日：2008-10-13
申请人： NOKIA CORPORATION , UGUR, Kemal , HALLAPURO, Antti Olli , RUSANOVSKYY, Dmytro , LAINEMA, Jani
发明人： UGUR, Kemal , HALLAPURO, Antti Olli , RUSANOVSKYY, Dmytro , LAINEMA, Jani
IPC分类号： H04N7/26
摘要： In accordance with an embodiment of the present invention, a method comprising: representing coefficients of an adaptive image filter in binary words wherein the coefficients are restricted and the binary words have a maximum number of bits defined at least in part by a precision index; computing at least one of a convolution sum and multiple partial convolution sums of the adaptive image filter wherein the at least one of a convolution sum and multiple partial convolution sums have a constrained value range and a binary representation with a fixed maximum number of bits; and generating the output of the adaptive image filter based at least in part on the at least, one of a convolution sum and multiple partial convolution sums, is disclosed.

3. 发明申请

WO2012014170A1 METHOD AND APPARATUS FOR PROVIDING COMPLEXITY BALANCED ENTROPY CODING 审中-公开
标题翻译：提供复杂平衡熵编码的方法和装置
公开(公告)号：WO2012014170A1
公开(公告)日：2012-02-02
申请号：PCT/IB2011/053356
申请日：2011-07-27
申请人： NOKIA CORPORATION , LAINEMA, Jani , UGUR, Kemal , HALLAPURO, Antti Olli
发明人： LAINEMA, Jani , UGUR, Kemal , HALLAPURO, Antti Olli
IPC分类号： H04N7/26
CPC分类号： H04N19/463 , H04N19/13 , H04N19/70
摘要： A method, apparatus and computer program product are provided to enable the provision of efficient processing in the area of video coding and decoding by employing complexity balanced entropy coding in order to provide a high level of capability with respect to video coding and decoding in a cost effective manner. A method includes categorizing a plurality of syntax elements of video content into first and second categories based on a frequency of occurrence of the syntax elements in the video content. The method also entropy codes symbols that correspond to the first category of syntax elements and that have been subjected to a context update. Further, the method entropy codes symbols that correspond to the second category of syntax elements and that have bypassed context updating. A corresponding apparatus and computer program product are also provided.
摘要翻译：提供了一种方法，装置和计算机程序产品，以便能够通过采用复杂度平衡熵编码在视频编码和解码领域提供有效的处理，以便以成本提供关于视频编码和解码的高水平能力有效的方式。一种方法包括基于视频内容中的语法元素的发生频率将视频内容的多个语法元素分类为第一和第二类别。该方法还熵编码对应于第一类语法元素并已经经历上下文更新的符号。此外，方法熵编码对应于第二类语法元素并且绕过上下文更新的符号。还提供了相应的装置和计算机程序产品。

4. 发明申请

WO2003019787A3 IMPLEMENTATION OF A TRANSFORM AND OF A SUBSEQUENT QUANTIZATION 审中-公开
公开(公告)号：WO2003019787A3
公开(公告)日：2003-03-06
申请号：PCT/IB2002/003566
申请日：2002-08-27
申请人： NOKIA CORPORATION , HALLAPURO, Antti , SIMELIUS, Kim
发明人： HALLAPURO, Antti , SIMELIUS, Kim
IPC分类号： H03M7/30
摘要： The invention relates to an approximation of a DCT and a quantization which are to be applied subsequently to digital data for compression of this digital data. In order to improve the transform, it is proposed to simplify a predetermined transform matrix to require less operations when applied to digital data. In addition, elements of the simplified transform matrix constituting irrational numbers are approximated by rational numbers. These measures are compensated by extending a predetermined quantization to compensate for the approximation of elements of the simplified transform matrix by rational numbers. If the simplified transform matrix and the extended quantization are used as basis for implementation, a fast transform with a good resulting quality can be achieved. An approximation of an IDCT employed in decompression of compressed digital data can be simplified correspondingly.

5. 发明申请

WO2012023061A1 METHOD AND APPARATUS FOR DETERMINING MAPPING BETWEEN A SYNTAX ELEMENT AND A CODE WORD FOR VARIABLE LENGTH CODING 审中-公开
标题翻译：用于确定可变长度编码的语音元素和代码字之间的映射的方法和装置
公开(公告)号：WO2012023061A1
公开(公告)日：2012-02-23
申请号：PCT/IB2011/053008
申请日：2011-07-06
申请人： NOKIA CORPORATION , UGUR, Kemal , HALLAPURO, Antti Olli
发明人： UGUR, Kemal , HALLAPURO, Antti Olli
IPC分类号： H04N7/26
CPC分类号： H04N19/91 , H04N19/13
摘要： A method comprising receiving a syntax element to be encoded as a code word of a set of code words, determining a mapping between the syntax element and the code word on the basis of a hierarchy level in a tree structure, using the mapping to obtain the code word, and updating the mapping is disclosed.
摘要翻译：一种方法，包括：接收要编码为一组代码字的代码字的语法元素，基于树结构中的层次级确定语法元素和代码字之间的映射，使用映射获得公开了代码字和更新映射。

6. 发明申请

WO2009115901A2 COMBINED MOTION VECTOR AND REFERENCE INDEX PREDICTION FOR VIDEO CODING 审中-公开
标题翻译：视频编码的组合运动矢量和参考指标预测
公开(公告)号：WO2009115901A2
公开(公告)日：2009-09-24
申请号：PCT/IB2009/000550
申请日：2009-03-18
申请人： NOKIA CORPORATION , HALLAPURO, Antti, Olli , UGUR, Kemai , LAINEMA, Jani
发明人： HALLAPURO, Antti, Olli , UGUR, Kemai , LAINEMA, Jani
CPC分类号： H04N19/513 , H04N19/52 , H04N19/573 , H04N19/593
摘要： A system and method for improving the coding efficiency of motion vector information in video coding. According to various embodiments, a list of motion vector predictor candidates is arranged according to predefined rules. Each motion vector also has a reference index associated with it. One of the motion vector candidates is then selected as a predictor based on predefined rules, or the selection is explicitly signaled in the bitstream. The reference index associated with the selected motion vector is used as a reference index for the current block. The reference index is predicted along with the motion vector. Such embodiments can improve the compression efficiency of modern video codecs.
摘要翻译：用于提高视频编码中运动矢量信息的编码效率的系统和方法。根据各种实施例，根据预定义的规则来排列运动向量预测因子候选者的列表。每个运动矢量也有一个与之相关的参考索引。然后基于预定义的规则选择运动矢量候选者之一作为预测器，或者在比特流中显式地发信号通知选择。与所选运动矢量相关联的参考索引被用作当前块的参考索引。参考索引与运动矢量一起预测。这样的实施例可以提高现代视频编解码器的压缩效率。

7. 发明申请

WO2008152573A2 JOINT CODING OF MULTIPLE TRANSFORM BLOCKS WITH REDUCED NUMBER OF COEFFICIENTS 审中-公开
标题翻译：具有减少系数的多个变换块的联合编码
公开(公告)号：WO2008152573A2
公开(公告)日：2008-12-18
申请号：PCT/IB2008/052277
申请日：2008-06-10
申请人： NOKIA CORPORATION , NOKIA INC , ZHANG, Cixun , UGUR, Kemal , LAINEMA, Jani , HALLAPURO, Antti, Olli
发明人： ZHANG, Cixun , UGUR, Kemal , LAINEMA, Jani , HALLAPURO, Antti, Olli
CPC分类号： H04N19/625 , H04N19/129 , H04N19/132 , H04N19/593 , H04N19/65
摘要： A system and method for video/image encoding and decoding, where transform coefficients associated with a plurality of blocks are reorganized and coded together. Various embodiments perform transform and quantization and generate transform coefficients, where the coefficients of the transform blocks are reorganized and interleaved. Additionally, an encoding process involves coding only a subset of the transform coefficients belonging to the transform blocks resulting in one or more transform blocks less than the original number of transform blocks, and putting this into a bitstream. A decoding process involves decoding the one or more resulting transform blocks including the subset of transform coefficients from the bistream, the transform coefficients being put in an array and decoded. The decoder de-interleaves the decoded transform coefficients and any remaining coefficients of the one or more transform blocks are filled in according to a plurality of different methods. After the one or more transform blocks are fully decoded, inverse transform and inverse quantization are performed and residual data is generated.
摘要翻译：一种用于视频/图像编码和解码的系统和方法，其中与多个块相关联的变换系数被重组和编码在一起。各种实施例执行变换和量化并生成变换系数，其中变换块的系数被重组和交织。此外，编码处理涉及仅编码属于变换块的变换系数的子集，导致小于原始数量的变换块的一个或多个变换块，并将其放入比特流中。解码过程涉及对来自双向头的变换系数子集的一个或多个所得到的变换块进行解码，将变换系数置于阵列中并进行解码。解码器解交织解码的变换系数，并且根据多种不同的方法填充一个或多个变换块的任何剩余系数。在一个或多个变换块完全解码之后，执行逆变换和逆量化，并产生残差数据。

8. 发明申请

WO2010063883A1 SWITCHING BETWEEN DCT COEFFICIENT CODING MODES 审中-公开
标题翻译： DCT系数编码模式之间的切换
公开(公告)号：WO2010063883A1
公开(公告)日：2010-06-10
申请号：PCT/FI2009/050945
申请日：2009-11-23
申请人： NOKIA CORPORATION , HALLAPURO, Antti , LAINEMA, Jani , UGUR, Kemal
发明人： HALLAPURO, Antti , LAINEMA, Jani , UGUR, Kemal
IPC分类号： H03M7/46 , H03M7/48 , G06T9/00 , H04N7/26
CPC分类号： H03M7/6094 , H03M7/48 , H04N19/13 , H04N19/14 , H04N19/18 , H04N19/61
摘要： A system and method is provided for improving efficiency when entropy coding a block of quantized transform coefficients in video coding. Quantized coefficients are coded in two separate coding modes, namely, a run mode to a level mode coding mode. “Rules” for switching between these two modes are provided, and various embodiments are realized by 5 allowing an entropy coder to adaptively decide when to switch between the two coding modes based on context information, the rules and/or by explicitly signaling the position of switching (e.g., whether or not it should switch coding modes).
摘要翻译：提供了一种系统和方法，用于在视频编码中熵编码量化变换系数块时提高效率。量化系数以两种分开的编码模式进行编码，即运行模式为电平模式编码模式。提供了用于在这两种模式之间切换的“规则”，并且通过以下方式实现各种实施例：5，允许熵编码器基于上下文信息，规则和/或通过明确地发信号来自适应地决定何时切换两种编码模式切换（例如，是否切换编码模式）。

9. 发明申请

WO2010063881A1 FLEXIBLE INTERPOLATION FILTER STRUCTURES FOR VIDEO CODING 审中-公开
标题翻译：用于视频编码的柔性插值滤波器结构
公开(公告)号：WO2010063881A1
公开(公告)日：2010-06-10
申请号：PCT/FI2009/050931
申请日：2009-11-18
申请人： NOKIA CORPORATION , RUSANOVSKYY, Dmytro , UGUR, Kemal , HALLAPURO, Antti , LAINEMA, Jani
发明人： RUSANOVSKYY, Dmytro , UGUR, Kemal , HALLAPURO, Antti , LAINEMA, Jani
IPC分类号： H04N7/26 , H04N7/36 , H04N5/14
CPC分类号： H04N19/523 , H04N19/117 , H04N19/46
摘要： Systems and methods of signaling different filter structures for each pixel or sub-pixel position in motion compensation prediction video coding are provided. An encoder signals to a decoder one filter structure among a plurality of pre-defined candidates that is used for a respective pixel or sub-pixel position. In accordance with one embodiment, filter structures signaled to the decoder from the encoder "switch" between directional filter and radial filter structures during interpolation at the sub-pixel level. In accordance with another embodiment, filter structures that are signaled may switch between a directional filter structure and a separable filter structure at the sub-pixel level. Thus, not only can an encoder switch between different filter structures during interpolation, but a filter structure pair is provided that the encoder can utilize to interpolate a wide range of signals without increasing tap-length.
摘要翻译：提供了用于在运动补偿预测视频编码中为每个像素或子像素位置发送不同滤波器结构的系统和方法。编码器向用于各个像素或子像素位置的多个预定义候选中的一个滤波器结构向解码器发信号。根据一个实施例，滤波器结构在子像素级的内插期间从编码器向方向滤波器和径向滤波器结构之间的信号转换到解码器。根据另一个实施例，被信号化的滤波器结构可以在子像素级别处在方向滤波器结构和可分离滤波器结构之间切换。因此，编码器不仅可以在插值期间在不同的滤波器结构之间切换，而且提供了一种滤波器结构对，编码器可以利用它来内插宽范围的信号而不增加分接头长度。

10. 发明申请

WO2007107855A3 FINE GRAINED SCALABILITY ORDERING FOR SCALABLE VIDEO CODING 审中-公开
标题翻译：精细化的可扩展定标可定量视频编码
公开(公告)号：WO2007107855A3
公开(公告)日：2008-06-12
申请号：PCT/IB2007000696
申请日：2007-03-21
申请人： NOKIA CORP , RIDGE JUSTIN , WANG XIANGLIN , HALLAPURO ANTTI , KARCZEWICZ MARTA
发明人： RIDGE JUSTIN , WANG XIANGLIN , HALLAPURO ANTTI , KARCZEWICZ MARTA
IPC分类号： H04N7/26
CPC分类号： H04N19/34 , H04N19/13 , H04N19/61 , H04N19/63 , H04N19/93
摘要： Methods, devices, and computer code products for encoding and decoding a video signal involving encoding blocks of the video signal by scan position within a coding cycle in decreasing order to increase the probability that the next symbol will be non-zero. Scalable video decoding techniques can include setting a state variable for a block to a run length if the state variable for the current block is zero otherwise decrementing the state variable if it is not zero. The current coefficient for the block can be set to the terminating value if the state variable is zero otherwise the coefficient can be set to zero if the state variable is not zero.
摘要翻译：用于对视频信号进行编码和解码的方法，装置和计算机代码产品，所述视频信号涉及按照编码周期内的扫描位置按照递减顺序增加视频信号的块，以增加下一个符号将不为零的概率。如果当前块的状态变量为零，则可扩展视频解码技术可以包括将块的状态变量设置为运行长度，否则如果状态变量不为零则递减状态变量。如果状态变量为零，则块的当前系数可以设置为终止值，否则如果状态变量不为零，则系数可以设置为零。

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