公开(公告)号：US09699456B2

公开(公告)日：2017-07-04

申请号：US13550377

申请日：2012-07-16

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

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

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

CPC classification number: H04N19/11 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/593

Abstract: 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：US09237355B2

公开(公告)日：2016-01-12

申请号：US12945170

申请日：2010-11-12

Applicant: Wei-Jung Chien ,  Marta Karczewicz ,  Peisong Chen

Inventor： Wei-Jung Chien ,  Marta Karczewicz ,  Peisong Chen

IPC: H04N11/02 ,  H04N19/58 ,  H04N19/52 ,  H04N19/176 ,  H04N19/147 ,  H04N19/172 ,  H04N19/46 ,  H04N19/102 ,  H04N19/61 ,  H04N19/523

CPC classification number: H04N19/58 ,  H04N19/102 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46 ,  H04N19/52 ,  H04N19/523 ,  H04N19/61

Abstract: A video encoder may encode video data by adaptively selecting between one-eighth-pixel and one-quarter-pixel precision motion vectors, and signal the selected precision. In one example, an apparatus includes a video encoder to encode a block of video data using a one-eighth-pixel precision motion vector when use of the one-eighth-pixel precision motion vector is determined to be preferable for the block over a one-quarter-pixel precision motion vector, and to generate a signal value indicative of the use of the one-eighth-pixel precision motion vector for the block, and an output interface to output the encoded block and the signal value. A video decoder may be configured to receive the signal value and the encoded block, analyze the signal value to determine whether the block was encoded using one-eighth-pixel precision or one-quarter-pixel precision, and decode the block based on the determination.

Abstract translation: 视频编码器可以通过在八分之一像素和四分之一像素精度的运动矢量之间进行自适应选择来对视频数据进行编码，并且将所选精度发信号。 在一个示例中，一种装置包括：视频编码器，当使用八分之一像素的精确运动矢量被确定为优于一块时，使用八分之一像素精度的运动矢量对视频数据块进行编码 并且生成指示使用该块的八分之一像素精度运动矢量的信号值，以及输出接口以输出编码块和信号值。 视频解码器可以被配置为接收信号值和编码块，分析信号值以确定块是使用八分之一像素精度还是四分之一像素精度进行编码，并且基于该确定对块进行解码 。

公开(公告)号：US08923395B2

公开(公告)日：2014-12-30

申请号：US13247812

申请日：2011-09-28

Applicant: Xianglin Wang ,  Marta Karczewicz ,  Wei-Jung Chien

Inventor： Xianglin Wang ,  Marta Karczewicz ,  Wei-Jung Chien

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

CPC classification number: H04N19/50 ,  H04N19/11 ,  H04N19/122 ,  H04N19/157 ,  H04N19/176 ,  H04N19/463 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20120051438A1

公开(公告)日：2012-03-01

申请号：US13178415

申请日：2011-07-07

Applicant: In Suk Chong ,  Marta Karczewicz ,  Wei-Jung Chien

Inventor： In Suk Chong ,  Marta Karczewicz ,  Wei-Jung Chien

IPC: H04N7/26

CPC classification number: H04N19/85 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/42 ,  H04N19/46 ,  H04N19/70 ,  H04N19/82

Abstract: Filtering is applied at an encoder, and filter information describing a set of filters is encoded in the bitstream to enable a decoder to identify the filtering that was applied at the encoder. The decoder receives encoded video data that includes the filter information, decodes the video data, and applies filtering based on the filtering information. The decoder applies the same filtering that was applied at the encoder. To potentially reduce the number of bits needed to reconstruct the set of filters and other filter information as well as to potentially improve decoder performance, filter description syntax describing the set of filters can be included in the bitstream. The filter description syntax may identify a number of filters in a set of filters, a maximum number of filters in a set of filters, and/or identify a shape of filters in a set of filters.

Abstract translation: 在编码器处应用滤波，并且在比特流中编码描述一组滤波器的滤波器信息，以使解码器能够识别在编码器处应用的滤波。 解码器接收包括滤波器信息的编码视频数据，解码视频数据，并根据滤波信息应用滤波。 解码器应用与编码器相同的滤波。 为了潜在地减少重建滤波器组和其它滤波器信息所需的位数以及潜在地提高解码器性能，描述滤波器集合的滤波器描述语法可以被包括在比特流中。 过滤器描述语法可以标识一组过滤器中的多个过滤器，一组过滤器中的过滤器的最大数量和/或识别一组过滤器中的过滤器的形状。

公开(公告)号：US20120027089A1

公开(公告)日：2012-02-02

申请号：US13179427

申请日：2011-07-08

Applicant: Wei-Jung Chien ,  Marta Karczewicz ,  Peisong Chen ,  Xianglin Wang

Inventor： Wei-Jung Chien ,  Marta Karczewicz ,  Peisong Chen ,  Xianglin Wang

IPC: H04N7/32

CPC classification number: H04N19/52 ,  H04N19/109 ,  H04N19/114 ,  H04N19/115 ,  H04N19/13 ,  H04N19/159 ,  H04N19/162 ,  H04N19/174 ,  H04N19/176 ,  H04N19/177 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/573 ,  H04N19/577 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

Abstract: This disclosure relates to techniques for reducing a cost of coding prediction information in video coding. Video blocks in a generalized P/B (GPB) frame are encoded using up to two motion vectors calculated from reference pictures in two separate reference picture lists that are identical. Video blocks of a GPB frame may, therefore, be encoded using a bidirectional prediction mode with a first motion vector from a reference picture in a first reference picture list and a second motion vector from the same or substantially similar reference picture in a second reference picture list. The techniques include jointly coding the first and second motion vectors for a video block of a GPB frame. The techniques include coding the first motion vector relative to a first motion predictor generated from a motion vector of a neighboring block, and coding the second motion vector relative to the first motion vector.

Abstract translation: 本公开涉及用于降低视频编码中的预测信息编码成本的技术。 广义P / B（GPB）帧中的视频块使用相同的两个单独参考图片列表中的参考图片计算的最多两个运动矢量进行编码。 因此，可以使用具有来自第一参考图像列表中的参考图像的第一运动矢量和来自第二参考图像中相同或基本相似的参考图像的第二运动矢量的双向预测模式来编码GPB帧的视频块 列表。 这些技术包括联合编码GPB帧的视频块的第一和第二运动矢量。 所述技术包括相对于从相邻块的运动矢量生成的第一运动预测器对第一运动矢量进行编码，以及相对于第一运动矢量对第二运动矢量进行编码。

公开(公告)号：US20110310976A1

公开(公告)日：2011-12-22

申请号：US13162466

申请日：2011-06-16

Applicant: Xianglin Wang ,  Wei-Jung Chien ,  Marta Karczewicz

Inventor： Xianglin Wang ,  Wei-Jung Chien ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/93 ,  H04N19/13 ,  H04N19/136 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/61 ,  H04N19/96

Abstract: In one example, a video decoder is configured to receive a value for a coding unit of video data, wherein the coding unit is partitioned into a plurality of sub-coding units, determine whether the sub-coding units are partitioned into further sub-coding units based on the value, and decode the sub-coding units and the further sub-coding units. In another example, a video encoder is configured to partition a coding unit of video data into a plurality of sub-coding units, determine whether to partition the sub-coding units into further sub-coding units, and encode the coding unit to include a value that indicates whether the sub-coding units are partitioned into the further sub-coding units.

Abstract translation: 在一个示例中，视频解码器被配置为接收视频数据的编码单元的值，其中编码单元被划分为多个子编码单元，确定子编码单元是否被划分为进一步的子编码 基于该值的单位，并对子编码单元和其他子编码单元进行解码。 在另一示例中，视频编码器被配置为将视频数据的编码单元划分为多个子编码单元，确定是否将子编码单元划分为进一步的子编码单元，并将编码单元编码为包括 指示子编码单元是否被划分为其他子编码单元的值。

公开(公告)号：US20110206125A1

公开(公告)日：2011-08-25

申请号：US12945170

申请日：2010-11-12

Applicant: Wei-Jung Chien ,  Marta Karczewicz ,  Peisong Chen

Inventor： Wei-Jung Chien ,  Marta Karczewicz ,  Peisong Chen

IPC: H04N11/02

CPC classification number: H04N19/58 ,  H04N19/102 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46 ,  H04N19/52 ,  H04N19/523 ,  H04N19/61

Abstract: A video encoder may encode video data by adaptively selecting between one-eighth-pixel and one-quarter-pixel precision motion vectors, and signal the selected precision. In one example, an apparatus includes a video encoder to encode a block of video data using a one-eighth-pixel precision motion vector when use of the one-eighth-pixel precision motion vector is determined to be preferable for the block over a one-quarter-pixel precision motion vector, and to generate a signal value indicative of the use of the one-eighth-pixel precision motion vector for the block, and an output interface to output the encoded block and the signal value. A video decoder may be configured to receive the signal value and the encoded block, analyze the signal value to determine whether the block was encoded using one-eighth-pixel precision or one-quarter-pixel precision, and decode the block based on the determination.

Abstract translation: 视频编码器可以通过在八分之一像素和四分之一像素精度的运动矢量之间进行自适应选择来对视频数据进行编码，并且将所选精度发信号。 在一个示例中，一种装置包括：视频编码器，当使用八分之一像素的精确运动矢量被确定为优于一块时，使用八分之一像素精度的运动矢量对视频数据块进行编码 并且生成指示使用该块的八分之一像素精度运动矢量的信号值，以及输出接口以输出编码块和信号值。 视频解码器可以被配置为接收信号值和编码块，分析信号值以确定块是使用八分之一像素精度还是四分之一像素精度进行编码，并且基于该确定对块进行解码 。

公开(公告)号：US20110002388A1

公开(公告)日：2011-01-06

申请号：US12756661

申请日：2010-04-08

Applicant: MARTA KARCZEWICZ ,  Wei-Jung Chien

Inventor： MARTA KARCZEWICZ ,  Wei-Jung Chien

IPC: H04N7/32

CPC classification number: H04N19/00733 ,  H04N19/105 ,  H04N19/147 ,  H04N19/176 ,  H04N19/19 ,  H04N19/46 ,  H04N19/51 ,  H04N19/573 ,  H04N19/577

Abstract: In one aspect of this disclosure, template matching motion prediction is applied to B-frames. In another aspect of this disclosure, template matching motion prediction as applied to video block coding may include generating a template offset, generating a weighted sum of absolute differences, selecting a number of hypotheses used to encode video blocks based on the cost associated with the number of hypotheses and signaling, with a new syntax, to a decoder, the number of hypotheses used in encoding, rejecting hypotheses if the difference in value between a hypothesis and a reference hypothesis is greater than a threshold value, and/or generating the content of a sub-block that does not have reconstructed data available by combining motion-compensated prediction and luma residuals.

Abstract translation: 在本公开的一个方面，模板匹配运动预测被应用于B帧。 在本公开的另一方面，应用于视频块编码的模板匹配运动预测可以包括生成模板偏移，产生绝对差的加权和，基于与数字相关联的成本来选择用于编码视频块的假设的数量 对于解码器，使用新语法的假设和信令，编码中使用的假设的数量，如果假设和参考假设之间的值的差异大于阈值，则拒绝假设，和/或生成内容 通过组合运动补偿预测和亮度残差，没有重建数据可用的子块。

公开(公告)号：US10327008B2

公开(公告)日：2019-06-18

申请号：US13247785

申请日：2011-09-28

Applicant: Wei-Jung Chien ,  Peisong Chen ,  Marta Karczewicz

Inventor： Wei-Jung Chien ,  Peisong Chen ,  Marta Karczewicz

IPC: H04N19/13 ,  H04N19/523 ,  H04N19/139 ,  H04N19/463 ,  H04N19/176 ,  H04N19/91

Abstract: A video encoder may be configured to adaptively select a sub-pixel precision for motion vectors used to encode video data. The video encoder may further entropy encode an indication of the sub-pixel precision using context adaptive binary arithmetic coding, where the context may correspond to the size of a block of video data for the motion vector. For example, the size may correspond to the depth of a coding unit, the size of a prediction unit of the coding unit, and/or a type for the prediction unit. The video encoder may also interpolate values for one-sixteenth pixel positions of chrominance data using bilinear interpolation. The video encoder may further encode a motion vector difference value for the motion vector using an encoding scheme corresponding to the sub-pixel precision of the motion vector. A video decoder may use similar, reciprocal techniques for decoding the video data.

公开(公告)号：US09654785B2

公开(公告)日：2017-05-16

申请号：US13491076

申请日：2012-06-07

Applicant: Wei-Jung Chien ,  Marta Karczewicz ,  Xianglin Wang

Inventor： Wei-Jung Chien ,  Marta Karczewicz ,  Xianglin Wang

IPC: H04N7/32 ,  H04N19/196 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/11 ,  H04N19/463 ,  H04N19/186

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463

Abstract: This disclosure describes techniques for intra-prediction mode signaling for video coding. In one example, a video coder is configured to determine, for a block of video data, a set of most probable intra-prediction modes such that the set of most probable intra-prediction modes has a size that is equal to a predetermined number that is greater than or equal to two. The video coder is also configured to code a value representative of an actual intra-prediction mode for the block based at least in part on the set of most probable intra-prediction modes and code the block using the actual intra-prediction mode. The video coder may further be configured to code the block using the actual intra-prediction mode, e.g., to encode or decode the block. Video encoders and video decoders may implement these techniques.