公开(公告)号：US10567754B2

公开(公告)日：2020-02-18

申请号：US15029589

申请日：2014-03-04

申请人： Microsoft Technology Licensing, LLC

发明人： Bin Li ,  Jizheng Xu ,  Feng Wu

IPC分类号： H04N19/11 ,  H04N19/14 ,  H04N19/105 ,  H04N19/593 ,  H04N19/176 ,  H04N19/91 ,  H04N19/96

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.

公开(公告)号：US10264271B2

公开(公告)日：2019-04-16

申请号：US15646361

申请日：2017-07-11

申请人： Microsoft Technology Licensing, LLC

发明人： Bin Li ,  Jizheng Xu

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

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.

公开(公告)号：US20190098308A1

公开(公告)日：2019-03-28

申请号：US16126240

申请日：2018-09-10

申请人： Microsoft Technology Licensing, LLC

发明人： Bin Li ,  Jizheng Xu ,  Gary J. Sullivan

IPC分类号： H04N19/124 ,  H04N9/64 ,  H04N19/136 ,  H04N19/176 ,  H04N19/174 ,  H04N19/186

CPC分类号： H04N19/124 ,  H04N9/64 ,  H04N19/136 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186

摘要： Innovations in adaptive encoding and decoding for units of a video sequence can improve coding efficiency when switching between color spaces during encoding and decoding. For example, some of the innovations relate to adjustment of quantization or scaling when an encoder switches color spaces between units within a video sequence during encoding. Other innovations relate to adjustment of inverse quantization or scaling when a decoder switches color spaces between units within a video sequence during decoding.

公开(公告)号：US10171833B2

公开(公告)日：2019-01-01

申请号：US15029242

申请日：2014-03-04

申请人： Microsoft Technology Licensing, LLC

发明人： Bin Li ,  Jizheng Xu ,  Feng Wu

IPC分类号： H04N19/59 ,  H04N19/117 ,  H04N19/13 ,  H04N19/132 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/587 ,  H04N19/82 ,  H04N19/88 ,  H04N19/172 ,  H04N19/61 ,  H04N19/70

摘要： Innovations in adaptive encoding and decoding for units of a video sequence can improve coding efficiency. For example, some of the innovations relate to encoding/decoding that includes adaptive switching of color spaces between units within a video sequence. Other innovations relate encoding/decoding that includes adaptive switching of color sampling rates between units within a video sequence. Still other innovations relate encoding/decoding that includes adaptive switching of bit depths between units within a video sequence.

公开(公告)号：US10136140B2

公开(公告)日：2018-11-20

申请号：US15030032

申请日：2014-03-17

申请人： Microsoft Technology Licensing, LLC

发明人： Bin Li ,  Jizheng Xu ,  Feng Wu

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/176 ,  H04N19/593 ,  H04N19/537 ,  H04N19/567 ,  H04N19/56 ,  H04N19/147 ,  H04N19/11 ,  H04N19/12 ,  H04N19/136 ,  H04N19/186 ,  H04N19/154 ,  H04N19/523 ,  H04N19/557 ,  H04N19/139 ,  H04N19/187 ,  H04N19/51 ,  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.

公开(公告)号：US20160261884A1

公开(公告)日：2016-09-08

申请号：US15029242

申请日：2014-03-04

申请人： MICROSOFT TECHNOLOGY LICENSING, LLC

发明人： Bin Li ,  Jizheng Xu ,  Feng Wu

IPC分类号： H04N19/59 ,  H04N19/186 ,  H04N19/70 ,  H04N19/176 ,  H04N19/88 ,  H04N19/13 ,  H04N19/61 ,  H04N19/172

CPC分类号： H04N19/59 ,  H04N19/117 ,  H04N19/13 ,  H04N19/132 ,  H04N19/157 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/587 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/88

摘要： Innovations in adaptive encoding and decoding for units of a video sequence can improve coding efficiency. For example, some of the innovations relate to encoding/decoding that includes adaptive switching of color spaces between units within a video sequence. Other innovations relate encoding/decoding that includes adaptive switching of color sampling rates between units within a video sequence. Still other innovations relate encoding/decoding that includes adaptive switching of bit depths between units within a video sequence.

摘要翻译： 针对视频序列单元进行自适应编码和解码的创新可以提高编码效率。 例如，一些创新涉及编码/解码，其包括视频序列内的单元之间的颜色空间的自适应切换。 其他创新涉及编码/解码，其包括在视频序列内的单元之间的颜色采样率的自适应切换。 还有其他创新涉及编码/解码，其包括在视频序列内的单元之间的比特深度的自适应切换。

公开(公告)号：US20240251083A1

公开(公告)日：2024-07-25

申请号：US18562793

申请日：2022-05-23

申请人： Microsoft Technology Licensing, LLC

发明人： Jiahao Li ,  Bin Li ,  Yan Lu

IPC分类号： H04N19/13 ,  H04N19/137 ,  H04N19/91

CPC分类号： H04N19/13 ,  H04N19/137 ,  H04N19/91

摘要： According to implementations of the present disclosure, there is provided a context-based image coding solution. According to the solution, a reference image of a target image is obtained. A contextual feature representation is extracted from the reference image, the contextual feature representation characterizing contextual information associated with the target image. Conditional encoding or conditional decoding is performed on the target image based on the contextual feature representation. In this way, the enhancement of the performance is achieved in terms of the reconstruction quality and the compression efficiency.

公开(公告)号：US12028537B2

公开(公告)日：2024-07-02

申请号：US18141874

申请日：2023-05-01

申请人： Microsoft Technology Licensing, LLC

发明人： Bin Li ,  Jizheng Xu ,  Gary J. Sullivan

IPC分类号： H04N19/186 ,  H04N1/64 ,  H04N19/126 ,  H04N19/176 ,  H04N19/184 ,  H04N19/70

CPC分类号： H04N19/186 ,  H04N1/644 ,  H04N19/126 ,  H04N19/176 ,  H04N19/184 ,  H04N19/70

摘要： Innovations in encoding or decoding when switching color spaces are presented. For example, some of the innovations relate to signaling of control information for adaptive color space transformation (“ACT”). Other innovations relate to ACT operations. These innovations can improve coding efficiency when switching between color spaces during encoding and decoding.

公开(公告)号：US20240214571A1

公开(公告)日：2024-06-27

申请号：US18434538

申请日：2024-02-06

申请人： Microsoft Technology Licensing, LLC

发明人： Bin Li ,  Jizheng Xu ,  Gary J. Sullivan

IPC分类号： H04N19/124 ,  H04N9/64 ,  H04N19/136 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186

CPC分类号： H04N19/124 ,  H04N9/64 ,  H04N19/136 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186

摘要： Innovations in adaptive encoding and decoding for units of a video sequence can improve coding efficiency when switching between color spaces during encoding and decoding. For example, some of the innovations relate to adjustment of quantization or scaling when an encoder switches color spaces between units within a video sequence during encoding. Other innovations relate to adjustment of inverse quantization or scaling when a decoder switches color spaces between units within a video sequence during decoding.

公开(公告)号：US12010338B2

公开(公告)日：2024-06-11

申请号：US18136498

申请日：2023-04-19

申请人： Microsoft Technology Licensing, LLC

发明人： Bin Li ,  Jizheng Xu

IPC分类号： H04N19/573 ,  H04N19/174 ,  H04N19/513 ,  H04N19/52

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.