公开(公告)号：US10681372B2

公开(公告)日：2020-06-09

申请号：US15321536

申请日：2014-06-23

Applicant: Microsoft Technology Licensing, LLC ,  Bin Li ,  Jizheng Xu

Inventor： Bin Li ,  Jizheng Xu

IPC: H04N19/103 ,  H04N19/517 ,  H04N19/557 ,  H04N19/52 ,  H04N19/105 ,  H04N19/176 ,  H04N19/117 ,  H04N19/137 ,  H04N19/523 ,  H04N19/433 ,  H04N19/70

Abstract: Innovations in encoder-side decisions that use the results of hash-based block matching when setting parameters are presented. For example, some of the innovations relate to ways to select motion vector precision depending on the results of hash-based block matching. Other innovations relate to ways to selectively disable sample adaptive offset filtering depending on the results of hash-based block matching. Still other innovations relate to ways to select which reference pictures to retain in a reference picture set depending on the results of hash-based block matching.

公开(公告)号：US09900615B2

公开(公告)日：2018-02-20

申请号：US13339292

申请日：2011-12-28

Applicant: Bin Li ,  Jizheng Xu

Inventor： Bin Li ,  Jizheng Xu

IPC: H04N19/105 ,  H04N19/52 ,  H04N19/573 ,  H04N19/174

CPC classification number: H04N19/573 ,  H04N19/174 ,  H04N19/52

Abstract: Disclosed herein are representative embodiments of generating representative motion information that can be used during processing of a video frame. In one exemplary embodiment disclosed herein, a reference frame comprising a group of blocks is processed, and motion information for the group of blocks is compressed at least by buffering representative motion-vector information and representative reference-frame index information for the group of blocks. The representative reference-frame index information comprises reference-frame index information of a representative block of the group of blocks, and the representative reference-frame index information represents reference-frame index information for the group of blocks during processing of a current frame.

公开(公告)号：US20170064330A1

公开(公告)日：2017-03-02

申请号：US15120389

申请日：2014-03-04

Applicant: Bin LI ,  Jizheng XU ,  Feng WU ,  Microsoft Technology Licensing, LLC

Inventor： Bin Li ,  Jizheng Xu ,  Feng Wu

IPC: H04N19/593 ,  H04N19/70

CPC classification number: H04N19/50 ,  H04N19/176 ,  H04N19/46 ,  H04N19/90

Abstract: Innovations are provided for encoding and/or decoding video and/or image content using dictionary modes. For example, some innovations predict current pixel values from previous pixel values stored in a 1-D dictionary. Other innovations predict current pixel values from previous pixel values using a pseudo 2-D dictionary mode. Yet other innovations predict current pixel values from previous pixel values in a reference picture using an inter pseudo 2-D dictionary mode. Pixel values can be predicted from previous pixel values (e.g., stored in a dictionary) that are identified by an offset and a length. Yet other innovations encode pixel values using hash matching of pixel values.

Abstract translation: 提供了使用字典模式对视频和/或图像内容进行编码和/或解码的创新。 例如，一些创新预测了存储在1-D字典中的先前像素值的当前像素值。 其他创新使用伪2-D字典模式预测来自先前像素值的当前像素值。 其他创新使用伪间二维字典模式来预测参考图像中的先前像素值的当前像素值。 可以从由偏移和长度标识的先前像素值（例如，存储在字典中）预测像素值。 其他创新使用像素值的哈希匹配对像素值进行编码。

公开(公告)号：US08548057B2

公开(公告)日：2013-10-01

申请号：US13013086

申请日：2011-01-25

Applicant: Bin Li ,  Jizheng Xu ,  Feng Wu

Inventor： Bin Li ,  Jizheng Xu ,  Feng Wu

IPC: H04B1/66 ,  G06K9/36

CPC classification number: H04N19/159 ,  H04N19/463 ,  H04N19/50 ,  H04N19/51 ,  H04N19/577 ,  H04N19/96

Abstract: Embodiments for reducing redundancy in video coding are disclosed. In accordance with at least one embodiment, video content is represented as a tree structure in which the nodes of the tree structure are associated with attributes of the video content. An encoder analyzes the nodes to determine whether there is redundancy associated with a last node of a divided node. In another embodiment, bidirectional prediction video coding techniques are applied to the video content. The encoder analyzes two lists of reference frames to determine whether a third mode of bidirectional prediction is redundant to a second mode of bidirectional prediction. The efficiency of video coding is improved by refraining from sending data symbols to the decoder in the event that the video coding techniques contain redundancy.

Abstract translation: 公开了减少视频编码冗余的实施例。 根据至少一个实施例，视频内容被表示为树结构，其中树结构的节点与视频内容的属性相关联。 编码器分析节点以确定是否存在与分割节点的最后一个节点相关联的冗余。 在另一个实施例中，将双向预测视频编码技术应用于视频内容。 编码器分析两个参考帧列表，以确定双向预测的第三种模式是否对双向预测的第二种模式是冗余的。 在视频编码技术包含冗余的情况下，通过避免向解码器发送数据符号来提高视频编码的效率。

公开(公告)号：US20130170556A1

公开(公告)日：2013-07-04

申请号：US13339913

申请日：2011-12-29

Applicant: Bin Li ,  Jizheng Xu

Inventor： Bin Li ,  Jizheng Xu

IPC: H04N7/26 ,  H03M7/40

CPC classification number: H03M7/40 ,  H03M7/6088 ,  H04N19/61 ,  H04N19/91

Abstract: Disclosed herein are representative embodiments for performing entropy coding or decoding using a counter-based scheme. In one exemplary embodiment disclosed herein, a first codeword is received from compressed digital media data. The first codeword is decoded into a first digital media data value by referencing a codeword table that associates the first codeword with the first digital media data value and a second codeword with a second digital media data value. A counter for counting occurrences of the first digital media data value is incremented. The value of the first counter is compared with the value of a second counter that counts occurrences of a second digital media data value. If the value of the first counter and the value of the second counter are equal (or greater than or equal), the codeword table is updated to swap codewords between the first and second digital media values.

Abstract translation: 这里公开了用于使用基于计数器的方案执行熵编码或解码的代表性实施例。 在本文公开的一个示例性实施例中，从压缩数字媒体数据接收第一码字。 通过参考将第一码字与第一数字媒体数据值相关联的码字表和第二数字媒体数据值的第二码字，将第一码字解码为第一数字媒体数据值。 用于计数第一数字媒体数据值的出现的计数器增加。 将第一计数器的值与计数第二数字媒体数据值的出现的第二计数器的值进行比较。 如果第一计数器的值和第二计数器的值相等（或大于或等于），则更新代码字表以交换第一和第二数字媒体值之间的码字。

公开(公告)号：US20130051452A1

公开(公告)日：2013-02-28

申请号：US13221489

申请日：2011-08-30

Applicant: Bin Li ,  Jizheng Xu ,  Feng Wu

Inventor： Bin Li ,  Jizheng Xu ,  Feng Wu

IPC: H04N7/26

CPC classification number: H04N19/00072 ,  H04N19/119 ,  H04N19/157 ,  H04N19/463 ,  H04N19/70 ,  H04N19/96

Abstract: Techniques for implementing video encoding enhancements may increase video encoding efficiency. One of the techniques may involve the use of an exception value and a maximum index value in inter-prediction coding lookup table to enhance the combined coding of an inter-prediction direction and a reference frame index for a coding unit. Another of the techniques may include adaptively ordering the encoding of a split flag value and a skip flag value for a coding unit. An additional technique may include providing a uniform approach to adaptively combined code the coded block flag (CBF) values for transform or coding units of images that are used with the Residue Quad-tree (RQT) information to represent residue information.

Abstract translation: 用于实现视频编码增强的技术可以增加视频编码效率。 其中一种技术可以涉及在帧间预测编码查找表中使用异常值和最大索引值来增强编码单元的帧间预测方向和参考帧索引的组合编码。 另一种技术可以包括对编码单元的分离标志值和跳过标志值的编码进行自适应排序。 附加技术可以包括提供统一的方法来自适应地组合编码用于与残差四叉树（RQT）信息一起使用的图像的变换或编码单位的编码块标志（CBF）值，以表示残差信息。

公开(公告)号：US20180014017A1

公开(公告)日：2018-01-11

申请号：US15549261

申请日：2015-02-06

Applicant: Bin LI ,  Jizheng XU ,  Microsoft Technology Licensing, LLC

Inventor： Bin Li ,  Jizheng Xu

IPC: H04N19/132 ,  H04N19/61 ,  H04N19/176 ,  H04N19/70 ,  H04N19/119

CPC classification number: H04N19/132 ,  H04N19/119 ,  H04N19/127 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/52 ,  H04N19/61 ,  H04N19/70

Abstract: Various innovations in media encoding are presented herein. In particular, the innovations can reduce the computational complexity of encoding by selectively skipping certain evaluation stages during encoding. For example, based on analysis of decisions made earlier in encoding or based on analysis of media to be encoded, an encoder can selectively skip evaluation of certain coding tools (such as residual coding or rate-distortion-optimized quantization), skip evaluation of certain values for parameters or settings (such as candidate unit sizes or transform sizes, or candidate partition patterns for motion compensation), and/or skip evaluation of certain coding modes (such as frequency transform skip mode) that are not expected to improve rate-distortion performance during encoding.

公开(公告)号：US20170070748A1

公开(公告)日：2017-03-09

申请号：US15029469

申请日：2014-03-04

Applicant: Bin LI ,  Jizheng XU ,  Feng WU ,  MICROSOFT TECHNOLOGY LICENSING, LLC

Inventor： Bin Li ,  Jizheng Xu ,  Feng Wu

IPC: H04N19/593 ,  H04N19/70 ,  H04N19/115 ,  H04N19/176

CPC classification number: H04N19/593 ,  H04N19/115 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

Abstract: Innovations in the area of encoding or decoding of blocks using intra block copy (“BC”) prediction improve coding efficiency for intra-BC-predicted blocks in many situations. For example, some of the innovations relate to block flipping in which an intra-BC-predicted block is flipped relative to a reference region, which can be indicated by a block vector (“BV”) value. Other innovations relate to signaling of a skip mode in which a current intra-BC-predicted block uses a signaled BV differential but lacks residual data.

Abstract translation: 使用块内复制（“BC”）预测的块编码或解码领域的创新在许多情况下提高了BC内预测块的编码效率。 例如，一些创新涉及块翻转，其中BC内预测块相对于参考区被翻转，其可以由块向量（“BV”）值指示。 其他创新涉及跳跃模式的信令，其中当前BC内预测块使用信号化的BV差分但缺少残留数据。

公开(公告)号：US20160241868A1

公开(公告)日：2016-08-18

申请号：US15025128

申请日：2013-10-14

Applicant: Bin LI ,  Jizheng XU ,  Gary J. SULLIVAN ,  MICROSOFT TECHNOLOGY LICENSING, LLC

Inventor： Bin Li ,  Jizheng Xu ,  Gary J. Sullivan

IPC: H04N19/52 ,  H04N19/91 ,  H04N19/57 ,  H04N19/82 ,  H04N19/86 ,  H04N19/56

CPC classification number: H04N19/52 ,  H04N19/56 ,  H04N19/57 ,  H04N19/593 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86 ,  H04N19/91

Abstract: Innovations in intra block copy (“BC”) prediction mode facilitate intra BC prediction that is more effective in terms of rate-distortion performance and/or computational efficiency of encoding and decoding. For example, some of the innovations provide ways to select block vector (“BV”) values more effectively. Other innovations provide ways to encode/decode BV values more efficiently. Still other innovations address how to perform in-loop deblock filtering when a block has intra BC prediction mode, or address how to perform intra BC prediction when constrained intra prediction is enabled.

Abstract translation: 块内复制（“BC”）预测模式的创新促进了在速率失真性能和/或编码和解码的计算效率方面更有效的BC内预测。 例如，一些创新提供了更有效地选择块向量（“BV”）值的方法。 其他创新提供了更有效地对BV值进行编码/解码的方法。 还有其他创新涉及当块具有BC内预测模式时如何执行循环去块滤波，或者当限制帧内预测启用时，如何执行帧内BC预测。

公开(公告)号：US20130343462A1

公开(公告)日：2013-12-26

申请号：US13530849

申请日：2012-06-22

Applicant: Bin Li ,  Jizheng Xu

Inventor： Bin Li ,  Jizheng Xu

IPC: H04N7/30 ,  H04N7/26

CPC classification number: H04N19/18 ,  H04N19/132 ,  H04N19/463 ,  H04N19/96

Abstract: Techniques for coding and deriving (e.g., determining) one or more coded-block-flags associated with video content are described herein. A coded-block-flag of a last node may be determined when coded-block-flags of preceding nodes are determined to be a particular value and when a predetermined condition is satisfied. In some instances, the predetermined condition may be satisfied when log2(size of current transform unit) is less than log2(size of maximum transform unit) or log2(size of current coding unit) is less than or equal to log2(size of maximum transform unit)+1. The preceding nodes may be nodes that precede the last node on a particular level in a residual tree.

Abstract translation: 本文描述了用于编码和导出（例如，确定）与视频内容相关联的一个或多个编码块标志的技术。 当确定先前节点的编码块标志是特定值并且满足预定条件时，可以确定最后一个节点的编码块标志。 在某些情况下，当log2（当前变换单位的大小）小于log2（最大变换单位的大小）或log2（当前编码单位的大小）小于或等于log2（最大大小）时，可以满足预定条件 变换单位）+1。 前述节点可以是残留树中特定级别上的最后一个节点之前的节点。