公开(公告)号：US20050220353A1

公开(公告)日：2005-10-06

申请号：US11090717

申请日：2005-03-25

申请人： Marta Karczewicz ,  Antti Hallapuro

发明人： Marta Karczewicz ,  Antti Hallapuro

IPC分类号： H04N7/26 ,  G06T3/40 ,  H04N1/00 ,  H04N7/36 ,  G06K9/36 ,  G06K9/46

CPC分类号： G06T3/4007 ,  H04N19/523 ,  H04N19/80

摘要： A method of interpolation in video coding in which an image comprising pixels arranged in rows and columns and represented by values having a specified dynamic range, the pixels in the rows residing at unit horizontal locations and the pixels in the columns residing at unit vertical locations, is interpolated to generate values for sub-pixels at fractional horizontal and vertical locations, the method comprising: a) when values for sub-pixels at half unit horizontal and unit vertical locations, and unit horizontal and half unit vertical locations are required, interpolating such values directly using weighted sums of pixels residing at unit horizontal and unit vertical locations; b) when values for sub-pixels at half unit horizontal and half unit vertical locations are required, interpolating such values directly using a weighted sum of values for sub-pixels residing at half unit horizontal and unit vertical locations calculated according to step (a); and c) when values for sub-pixels at quarter unit horizontal and quarter unit vertical locations are required, interpolating such values by taking the average of at least one pair of a first pair of values of a sub-pixel located at a half unit horizontal and unit vertical location, and a sub-pixel located at a unit horizontal and half unit vertical location and a second pair of values of a pixel located at a unit horizontal and unit vertical location, and a sub-pixel located at a half unit horizontal and half unit vertical location.

摘要翻译： 一种在视频编码中的插值方法，其中包括以行和列排列并由具有指定动态范围的值表示的像素的图像，驻留在单位水平位置的行中的像素和驻留在单元垂直位置的列中的像素， 被插值以产生分数水平和垂直位置处的子像素的值，该方法包括：a）当需要在半单位水平和单位垂直位置以及单位水平和半单位垂直位置处的子像素的值时，内插这样的 值直接使用位于单位水平和单位垂直位置的像素的加权和; b）当需要在半单位水平和半单位垂直位置处的子像素的值时，使用驻留在根据步骤（a）计算的半单位水平和单位垂直位置的子像素的值的加权和直接内插这些值， ; 并且c）当需要在四分之一单位水平和四分之一单位垂直位置处的子像素的值时，通过以位于半单位水平的子像素的至少一对第一对值的平均值来内插这样的值 以及位于单位水平和半单位垂直位置的单位的子像素和位于水平单位和单位垂直位置的单位的像素的第二对值，以及位于水平单位的单位的子像素 和单位垂直位置。

公开(公告)号：US20050201462A1

公开(公告)日：2005-09-15

申请号：US10797635

申请日：2004-03-09

申请人： Justin Ridge ,  Yiliang Bao ,  Marta Karczewicz

发明人： Justin Ridge ,  Yiliang Bao ,  Marta Karczewicz

IPC分类号： H04N7/12 ,  H04N7/26

CPC分类号： H04N19/593 ,  H04N19/30 ,  H04N19/51

摘要： A motion estimation procedure for bitrate scalability and spatial scalability, wherein an original video frame is divided into a plurality of rectangular blocks of coefficients and a plurality of reference blocks are formed from an offset of the rectangular blocks in both x and y directions. For a given original video frame, one or more reference frames are selected so that a plurality of differences between the reference blocks and the rectangular blocks can be computed partly based on the summation of the differences between individual coefficients in each block. A weighted sum of the differences is computed and minimized so as to optimize the offset.

摘要翻译： 一种用于比特率可缩放性和空间可缩放性的运动估计过程，其中原始视频帧被分成多个矩形系数块，并且从x和y方向上的矩形块的偏移量形成多个参考块。 对于给定的原始视频帧，选择一个或多个参考帧，使得可以基于每个块中的各个系数之间的差的总和来部分地计算参考块和矩形块之间的多个差。 计算和最小化差异的加权和，以优化偏移。

公开(公告)号：US07664176B2

公开(公告)日：2010-02-16

申请号：US10891271

申请日：2004-07-14

申请人： Yiliang Bao ,  Marta Karczewicz ,  Justin Ridge

发明人： Yiliang Bao ,  Marta Karczewicz ,  Justin Ridge

IPC分类号： H04N7/12

CPC分类号： H04N19/184 ,  H04N19/132 ,  H04N19/136 ,  H04N19/157 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/196 ,  H04N19/30 ,  H04N19/46 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

摘要： A method, program product and apparatus for decoding from a scalable bit stream the binarization results of a video sequence by selectively decoding syntax elements and avoiding redundancy in coding. The result is a decrease in the size of the compressed bit stream of an enhancement layer bit stream. It has been demonstrated that the compression efficiency equals that of a single, non-scalable video stream for some video sequences. These features may be achieved by determining whether a skipping flag in the base layer macro block of the video data is set, and decoding a skipping flag from an enhancement layer macro block of the video data, corresponding to the base layer macro block, only if the base layer macro block skipping flag is set.

摘要翻译： 一种用于通过选择性地解码语法元素并避免编码中的冗余，从可缩放比特流解码视频序列的二值化结果的方法，程序产品和装置。 结果是增强层比特流的压缩比特流的大小减小。 已经证明，对于一些视频序列，压缩效率等于单个不可分级视频流的压缩效率。 这些特征可以通过确定视频数据的基本层宏块中的跳过标志是否被设置来实现，并且对应于基本层宏块的视频数据的增强层宏块解码跳过标志，只有当 设置基本层宏块跳过标志。

公开(公告)号：US20050201629A1

公开(公告)日：2005-09-15

申请号：US10797467

申请日：2004-03-09

申请人： Marta Karczewicz ,  Yiliang Bao ,  Justin Ridge

发明人： Marta Karczewicz ,  Yiliang Bao ,  Justin Ridge

IPC分类号： G06K9/36 ,  G06K9/46 ,  H04N7/26

CPC分类号： H04N21/234327 ,  H04N19/34 ,  H04N19/40

摘要： A binarization procedure in scalable video coding, wherein a video sequence is encoded in a manner such that an encoded sequence characterized by a lower bit rate can be produced through selective removal of bits from the bitstream. The binarization procedure is used to form a plurality of enhancement layers, each of which is associated with a quantization step-size. An interval is obtained based on the quantization step-size and the reconstructed values of the enhancement layer coefficients. Based on the predicted values of the enhancement layer coefficients and the original coefficients of the video data, the interval is refined and the reconstruction values are recomputed in order to reduce the quantization step-size for the next enhancement layer.

摘要翻译： 可分级视频编码中的二进制化过程，其中视频序列以这样的方式编码，使得可以通过从比特流中选择性地去除比特来产生以较低比特率表征的编码序列。 二值化过程用于形成多个增强层，每个增强层与量化步长相关联。 基于量化步长和增强层系数的重构值获得间隔。 基于视频数据的增强层系数和原始系数的预测值，对间隔进行细化，重新计算重构值，以减小下一增强层的量化步长。

公开(公告)号：US10298939B2

公开(公告)日：2019-05-21

申请号：US13529508

申请日：2012-06-21

申请人： Muhammed Zeyd Coban ,  Marta Karczewicz ,  In Suk Chong ,  Xianglin Wang

发明人： Muhammed Zeyd Coban ,  Marta Karczewicz ,  In Suk Chong ,  Xianglin Wang

IPC分类号： H04N7/40 ,  H04N7/32 ,  H04N19/196 ,  H04N19/105 ,  H04N19/176 ,  H04N19/61 ,  H04N19/463 ,  H04N19/90 ,  H04N19/426

摘要： In an example, aspects of this disclosure relate to a method of coding video data that includes identifying a plurality of quantization parameter (QP) values associated with a plurality of reference blocks of video data. The method also includes generating a reference QP for the plurality of reference blocks based on the plurality of QPs. The method also includes storing the reference QP, and coding a block of video data based on the stored reference QP.

公开(公告)号：US09736489B2

公开(公告)日：2017-08-15

申请号：US13585423

申请日：2012-08-14

申请人： Xianglin Wang ,  Yunfei Zheng ,  Vadim Seregin ,  Marta Karczewicz

发明人： Xianglin Wang ,  Yunfei Zheng ,  Vadim Seregin ,  Marta Karczewicz

IPC分类号： H04N19/436 ,  H04N19/52

CPC分类号： H04N19/436 ,  H04N19/52

摘要： For each prediction unit (PU) belonging to a coding unit (CU), a video coder generates a candidate list. The video coder generates the candidate list such that each candidate in the candidate list that is generated based on motion information of at least one other PU is generated without using motion information of any of the PUs belonging to the CU. After generating the candidate list for a PU, the video coder generates a predictive video block for the PU based on one or more reference blocks indicated by motion information of the PU. The motion information of the PU is determinable based on motion information indicated by a selected candidate in the candidate list for the PU.

公开(公告)号：US09699456B2

公开(公告)日：2017-07-04

申请号：US13550377

申请日：2012-07-16

申请人： Wei-Jung Chien ,  Yunfei Zheng ,  Xianglin Wang ,  Marta Karczewicz ,  Liwei Guo

发明人： Wei-Jung Chien ,  Yunfei Zheng ,  Xianglin Wang ,  Marta Karczewicz ,  Liwei Guo

IPC分类号： H04N7/26 ,  H04N7/32 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/147 ,  H04N19/46 ,  H04N19/51 ,  H04N19/593

CPC分类号： H04N19/11 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/593

摘要： In an example, aspects of this disclosure relate to a method of coding video data that generally includes determining prediction information for a block of video data, where the block is included in a coded unit of video data and positioned below a top row of above-neighboring blocks in the coded unit, and where the prediction information for the block is based on prediction information from one or more other blocks in the coded unit but not based on prediction information from any of the top row of blocks in the coded unit. The method also generally includes coding the block based on the determined prediction information.

公开(公告)号：US09654776B2

公开(公告)日：2017-05-16

申请号：US13013706

申请日：2011-01-25

申请人： Peisong Chen ,  Xianglin Wang ,  Marta Karczewicz

发明人： Peisong Chen ,  Xianglin Wang ,  Marta Karczewicz

IPC分类号： H04N19/119 ,  H04N19/52 ,  H04N19/122 ,  H04N19/137 ,  H04N19/17 ,  H04N19/537 ,  H04N19/543

CPC分类号： H04N19/615 ,  H04N19/119 ,  H04N19/122 ,  H04N19/137 ,  H04N19/17 ,  H04N19/174 ,  H04N19/176 ,  H04N19/513 ,  H04N19/52 ,  H04N19/537 ,  H04N19/543 ,  H04N19/66

摘要： In one example, an apparatus includes a video encoder configured to partition a block of video data into a first geometric partition and a second geometric partition using a geometric motion partition line, wherein the block comprises N×N pixels, divide the block of video data into four equally-sized, non-overlapping (N/2)×(N/2) sub-blocks, and encode at least one of the sub-blocks through which the geometric motion partition line passes using a transform size smaller than (N/2)×(N/2). The video encoder may determine transform sizes for the sub-blocks based on whether the geometric motion partition line passes through the sub-blocks. In one example, a video decoder may inverse transform the sub-blocks, and may determine transform sizes for the sub-blocks based on whether the geometric motion partition line passes through the sub-blocks.

公开(公告)号：US09313494B2

公开(公告)日：2016-04-12

申请号：US13526261

申请日：2012-06-18

申请人： Yunfei Zheng ,  Xianglin Wang ,  Marta Karczewicz

发明人： Yunfei Zheng ,  Xianglin Wang ,  Marta Karczewicz

IPC分类号： H04N7/36 ,  H04N19/51 ,  H04N19/105 ,  H04N19/52 ,  H04N19/176 ,  H04N19/70 ,  H04N19/593 ,  H04N19/11 ,  H04N19/103 ,  H04N19/109 ,  H04N19/17 ,  H04N19/436 ,  H04N19/577

CPC分类号： H04N19/52 ,  H04N19/103 ,  H04N19/105 ,  H04N19/109 ,  H04N19/11 ,  H04N19/17 ,  H04N19/176 ,  H04N19/436 ,  H04N19/51 ,  H04N19/577 ,  H04N19/593 ,  H04N19/70

摘要： This disclosure presents methods and systems for coding video in merge mode of a motion vector prediction process. A method of coding video data may determining a merge candidate set for a current prediction unit of a current coding unit, wherein the merge candidate set is determined without comparing motion information of a merge candidate in the merge candidate set to motion information of any other prediction units, and performing a merge motion vector prediction process for the current prediction unit using the merge candidate set. The method may further comprise excluding merge candidates from the merge candidate set that are within another prediction unit of the current coding unit.

摘要翻译： 本公开提供了用于在运动矢量预测处​​理的合并模式下编码视频的方法和系统。 编码视频数据的方法可以确定当前编码单元的当前预测单元的合并候选集合，其中确定合并候选集合，而不将合并候选集合中的合并候选的运动信息与任何其他预测的运动信息进行比较 并且使用合并候选组对当前预测单元执行合并运动矢量预测处​​理。 该方法还可以包括从当前编码单元的另一预测单元内的合并候选集合中排除合并候选。

公开(公告)号：US08923395B2

公开(公告)日：2014-12-30

申请号：US13247812

申请日：2011-09-28

申请人： Xianglin Wang ,  Marta Karczewicz ,  Wei-Jung Chien

发明人： Xianglin Wang ,  Marta Karczewicz ,  Wei-Jung Chien

IPC分类号： H04N7/12 ,  H04N19/11 ,  H04N19/70 ,  H04N19/61 ,  H04N19/593 ,  H04N19/157 ,  H04N19/463 ,  H04N19/176

CPC分类号： H04N19/50 ,  H04N19/11 ,  H04N19/122 ,  H04N19/157 ,  H04N19/176 ,  H04N19/463 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70

摘要： In general, techniques of this disclosure are related to determining a prediction characteristic associated with a coding unit of video data, wherein determining the prediction characteristic includes determining a prediction type that defines a number of prediction units associated with the coding unit. Techniques of this disclosure may also be related to generating a set of available intra-prediction modes for the coding unit based on the prediction characteristic, selecting an intra-prediction mode from the available intra-prediction modes, and applying one of the available intra-prediction modes to code the coding unit.

摘要翻译： 通常，本公开的技术涉及确定与视频数据的编码单元相关联的预测特性，其中确定预测特性包括确定定义与编码单元相关联的预测单元的数量的预测类型。 本公开的技术还可以涉及基于预测特性生成用于编码单元的一组可用的帧内预测模式，从可用的帧内预测模式中选择帧内预测模式，以及应用可用的帧内预测模式之一， 编码单元的预测模式。