公开(公告)号：US20160277761A1

公开(公告)日：2016-09-22

申请号：US15029585

申请日：2014-03-04

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

发明人： Bin Li ,  Jizheng Xu ,  Feng Wu

IPC分类号： H04N19/593 ,  H04N19/126 ,  H04N19/61 ,  H04N19/105 ,  H04N19/176

CPC分类号： H04N19/593 ,  H04N19/105 ,  H04N19/124 ,  H04N19/126 ,  H04N19/132 ,  H04N19/176 ,  H04N19/61

摘要： Innovations in the area of encoding blocks using hash-based block matching improve coding efficiency in many situations. For example, some of the innovations relate to encoder-side decisions about when to use block flipping during prediction. Other innovations relate to encoder-side decisions about when to use skip mode for a block predicted using intra block copy (“BC”) prediction.

摘要翻译： 使用基于散列的块匹配的编码块区域的创新在许多情况下提高了编码效率。 例如，一些创新与编码器方面的决策有关何时在预测期间使用块翻转。 其他创新涉及关于何时使用跳过模式对使用块内复制（“BC”）预测预测的块的编码器方面的决策。

公开(公告)号：US20160277733A1

公开(公告)日：2016-09-22

申请号：US15029589

申请日：2014-03-04

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

发明人： Bin Li ,  Jizheng Xu ,  Feng Wu

IPC分类号： H04N19/105 ,  H04N19/96 ,  H04N19/593 ,  H04N19/176 ,  H04N19/91

摘要： Innovations in the areas of hash table construction and availability checking reduce computational complexity of hash-based block matching. For example, some of the innovations speed up the process of constructing a hash table or reduce the size of a hash table. This can speed up and reduce memory usage for hash-based block matching within a picture (for block vector estimation) or between different pictures (for motion estimation). Other innovations relate to availability checking during block vector estimation that uses a hash table.

摘要翻译： 哈希表构建和可用性检查领域的创新降低了基于哈希的块匹配的计算复杂性。 例如，一些创新加快构建散列表的过程或减少散列表的大小。 这可以加快和减少图像内的基于散列的块匹配（用于块向量估计）或不同图像之间（用于运动估计）的存储器使用。 其他创新涉及使用哈希表的块向量估计期间的可用性检查。

公开(公告)号：US20160241858A1

公开(公告)日：2016-08-18

申请号：US15025032

申请日：2013-10-14

申请人： Bin LI ,  Jizheng XU ,  MICROSOFT TECHNOLOGY LICENSING, LLC

发明人： Bin Li ,  Jizheng Xu

IPC分类号： H04N19/159 ,  H04N19/172 ,  H04N19/176

CPC分类号： H04N19/159 ,  H04N19/11 ,  H04N19/172 ,  H04N19/176 ,  H04N19/521 ,  H04N19/57 ,  H04N19/593 ,  H04N19/96

摘要： Innovations in encoder-side options for 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. For example, some of the innovations relate to concurrently performing block vector (“BV”) estimation and making block splitting decisions for a block. Other innovations relate to selectively merging blocks into a larger block during BV estimation.

摘要翻译： 用于帧内复制（“BC”）预测模式的编码器侧选项的创新促进了在速率失真性能和/或编码的计算效率方面更有效的帧内BC预测。 例如，一些创新涉及同时执行块向量（“BV”）估计并且为块进行块分割决定。 其他创新涉及在BV估计期间选择性地将块合并到更大的块中。

公开(公告)号：US20160269732A1

公开(公告)日：2016-09-15

申请号：US15030032

申请日：2014-03-17

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

发明人： Bin Li ,  Jizheng Xu ,  Feng Wu

IPC分类号： H04N19/176 ,  H04N19/82 ,  H04N19/187 ,  H04N19/186 ,  H04N19/139 ,  H04N19/593 ,  H04N19/147 ,  H04N19/51 ,  H04N19/12

CPC分类号： H04N19/176 ,  H04N19/11 ,  H04N19/12 ,  H04N19/136 ,  H04N19/139 ,  H04N19/147 ,  H04N19/154 ,  H04N19/186 ,  H04N19/187 ,  H04N19/51 ,  H04N19/523 ,  H04N19/537 ,  H04N19/557 ,  H04N19/56 ,  H04N19/567 ,  H04N19/593 ,  H04N19/82

摘要： Innovations in encoder-side decisions for coding of screen content video or other video can speed up encoding in various ways. For example, some of the innovations relate to ways to speed up motion estimation by identifying appropriate starting points for the motion estimation in different reference pictures. Many of the encoder-side decisions speed up encoding by terminating encoding for a block or skipping the evaluation of certain modes or options when a condition is satisfied. For example, some of the innovations relate to ways to speed up encoding when hash-based block matching is used. Still other innovations relate to ways to identify when certain intra-picture prediction modes should or should not be evaluated during encoding. Other innovations relate to other aspects of encoding.

摘要翻译： 针对屏幕内容视频或其他视频编码的编码器方面决策的创新可以以各种方式加速编码。 例如，一些创新涉及通过识别不同参考图片中的运动估计的适当起始点来加速运动估计的方法。 编码器侧决策中的许多决定通过终止块的编码来加速编码，或者当满足条件时跳过某些模式或选项的评估。 例如，一些创新涉及在使用基于哈希的块匹配时加快编码的方法。 其他创新还涉及在编码期间何时或不应评估某些图像内预测模式的方法。 其他创新与编码的其他方面有关。

公开(公告)号：US20170142418A1

公开(公告)日：2017-05-18

申请号：US15319797

申请日：2014-06-19

申请人： Bin LI ,  Ji-Zheng XU ,  Microsoft Technology Licensing, LLC

发明人： Bin Li ,  Ji-Zheng Xu

IPC分类号： H04N19/159 ,  H04N19/184 ,  H04N19/176 ,  H04N19/513 ,  H04N19/174

摘要： Innovations in unified intra block copy (“BC”) and inter prediction modes are presented. In some example implementations, bitstream syntax, semantics of syntax elements and many coding/decoding processes for inter prediction mode are reused or slightly modified to enable intra BC prediction for blocks of a frame. For example, to provide intra BC prediction for a current block of a current picture, a motion compensation process applies a motion vector that indicates a displacement within the current picture, with the current picture being used as a reference picture for the motion compensation process. With this unification of syntax, semantics and coding/decoding processes, various coding/decoding tools designed for inter prediction mode, such as advanced motion vector prediction, merge mode and skip mode, can also be applied when intra BC prediction is used, which simplifies implementation of intra BC prediction.

公开(公告)号：US09900615B2

公开(公告)日：2018-02-20

申请号：US13339292

申请日：2011-12-28

申请人： Bin Li ,  Jizheng Xu

发明人： Bin Li ,  Jizheng Xu

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

CPC分类号： H04N19/573 ,  H04N19/174 ,  H04N19/52

摘要： 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：US08548057B2

公开(公告)日：2013-10-01

申请号：US13013086

申请日：2011-01-25

申请人： Bin Li ,  Jizheng Xu ,  Feng Wu

发明人： Bin Li ,  Jizheng Xu ,  Feng Wu

IPC分类号： H04B1/66 ,  G06K9/36

CPC分类号： H04N19/159 ,  H04N19/463 ,  H04N19/50 ,  H04N19/51 ,  H04N19/577 ,  H04N19/96

摘要： 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.

摘要翻译： 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

申请人： Bin Li ,  Jizheng Xu

发明人： Bin Li ,  Jizheng Xu

IPC分类号： H04N7/26 ,  H03M7/40

CPC分类号： H03M7/40 ,  H03M7/6088 ,  H04N19/61 ,  H04N19/91

摘要： 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.

摘要翻译： 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

申请人： Bin Li ,  Jizheng Xu ,  Feng Wu

发明人： Bin Li ,  Jizheng Xu ,  Feng Wu

IPC分类号： H04N7/26

CPC分类号： H04N19/00072 ,  H04N19/119 ,  H04N19/157 ,  H04N19/463 ,  H04N19/70 ,  H04N19/96

摘要： 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.

摘要翻译： 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：US20130343462A1

公开(公告)日：2013-12-26

申请号：US13530849

申请日：2012-06-22

申请人： Bin Li ,  Jizheng Xu

发明人： Bin Li ,  Jizheng Xu

IPC分类号： H04N7/30 ,  H04N7/26

CPC分类号： H04N19/18 ,  H04N19/132 ,  H04N19/463 ,  H04N19/96

摘要： 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.

摘要翻译： 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。