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1.发明授权公开(公告)号：US09300978B2
公开(公告)日：2016-03-29
申请号：US12407588
申请日：2009-03-19
申请人： Antti Olli Hallapuro , Kemai Ugur , Jani Lainema
发明人： Antti Olli Hallapuro , Kemai Ugur , Jani Lainema
IPC分类号： H04N19/573 , H04N19/52 , H04N19/593
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。
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公开(公告)号：US20090304084A1
公开(公告)日：2009-12-10
申请号：US12407588
申请日：2009-03-19
申请人： Antti Olli Hallapuro , Kemai Ugur , Jani Lainema
发明人： Antti Olli Hallapuro , Kemai Ugur , Jani Lainema
IPC分类号： H04N7/26
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。
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公开(公告)号：US20090097547A1
公开(公告)日：2009-04-16
申请号：US12250236
申请日：2008-10-13
IPC分类号： H04N7/12
CPC分类号： H04N19/82 , H04N19/107 , H04N19/117 , H04N19/176 , H04N19/42 , H04N19/61
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 having a constrained value range and having 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.
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公开(公告)号：US09036701B2
公开(公告)日：2015-05-19
申请号：US13192111
申请日：2011-07-27
申请人： Jani Lainema , Kemal Ugur , Antti Olli Hallapuro
发明人： Jani Lainema , Kemal Ugur , Antti Olli Hallapuro
IPC分类号： H04N7/26 , H04N19/463 , H04N19/70 , H04N19/13
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。
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5.发明授权Fixed-point implementation of an adaptive image filter with high coding efficiency 失效具有高编码效率的自适应图像滤波器的定点实现公开(公告)号：US08416861B2
公开(公告)日：2013-04-09
申请号：US12250236
申请日：2008-10-13
CPC分类号： H04N19/82 , H04N19/107 , H04N19/117 , H04N19/176 , H04N19/42 , H04N19/61
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 having a constrained value range and having 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.
摘要翻译： 根据本发明的实施例，一种方法包括：以二进制字表示自适应图像滤波器的系数，其中系数被限制，并且二进制字具有至少部分地由精度指数定义的最大位数; 计算自适应图像滤波器的卷积和和多个部分卷积和中的至少一个，其中卷积和和具有约束值范围并具有固定最大位数的二进制表示的部分卷积和之间的至少一个; 并且至少部分地基于卷积和和多个部分卷积和中的至少一个来生成自适应图像滤波器的输出。
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6.发明申请JOINT CODING OF MULTIPLE TRANSFORM BLOCKS WITH REDUCED NUMBER OF COEFFICIENTS 审中-公开具有减少系数的多个变换块的联合编码公开(公告)号：US20090016626A1
公开(公告)日：2009-01-15
申请号：US12138333
申请日：2008-06-12
申请人： Cixun Zhang , Kemal Ugur , Jani Lainema , Antti Olli Hallapuro
发明人： Cixun Zhang , Kemal Ugur , Jani Lainema , Antti Olli Hallapuro
IPC分类号： G06K9/36
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。
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公开(公告)号：US20100246692A1
公开(公告)日：2010-09-30
申请号：US12630731
申请日：2009-12-03
IPC分类号： H04N7/26
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，被发信号的滤波器结构可以在子像素级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。
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公开(公告)号：US20100150226A1
公开(公告)日：2010-06-17
申请号：US12630763
申请日：2009-12-03
申请人： Antti Olli Hallapuro , Jani Lainema , Kemal Ugur
发明人： Antti Olli Hallapuro , Jani Lainema , Kemal Ugur
IPC分类号： H04N7/26
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 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。 量化系数以两种分离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进行切换的“规则”，并且通过允许熵编码器基于上下文信息，规则和/或通过明确地发送切换位置自适应地决定何时切换两种编码模式来实现各种实施例 （例如，是否应切换编码模式）。
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9.发明申请Fixed-Point Implementation of an Adaptive Image Filter with High Coding Efficiency 审中-公开具有高编码效率的自适应图像滤波器的定点实现公开(公告)号：US20090097545A1
公开(公告)日：2009-04-16
申请号：US11872024
申请日：2007-10-14
CPC分类号： H04N19/523 , H04N19/117 , H04N19/136 , H04N19/176 , H04N19/42 , H04N19/61 , H04N19/82
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 having a constrained value range and having 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.
摘要翻译： 根据本发明的实施例，一种方法包括：以二进制字表示自适应图像滤波器的系数，其中系数被限制，并且二进制字具有至少部分地由精度指数定义的最大位数; 计算自适应图像滤波器的卷积和和多个部分卷积和中的至少一个，其中卷积和和具有约束值范围并具有固定最大位数的二进制表示的部分卷积和之间的至少一个; 并且至少部分地基于卷积和和多个部分卷积和中的至少一个来生成自适应图像滤波器的输出。
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公开(公告)号：US09736486B2
公开(公告)日：2017-08-15
申请号：US13023328
申请日：2011-02-08
申请人： Jani Lainema , Kemal Ugur
发明人： Jani Lainema , Kemal Ugur
IPC分类号： H04N19/182 , H04N19/196 , H04N19/105 , H04N19/11 , H04N19/107
CPC分类号： H04N19/182 , H04N19/105 , H04N19/107 , H04N19/11 , H04N19/196 , H04N19/197
摘要： There is disclosed an apparatus, a method and a computer program for video coding. The apparatus comprises a selector configured for selecting a pixel for prediction; a projection definer configured for determining a projection of said pixel to a set of reference pixels; and a prediction definer configured for selecting one or more reference pixels from said set of reference pixels on the basis of said projection, and using said selected one or more reference pixels to obtain a prediction value for said pixel to be predicted.
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