CN113316939A - 一种标志位的上下文建模方法及装置 - Google Patents
一种标志位的上下文建模方法及装置 Download PDFInfo
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Abstract
一种标志位的上下文建模方法及装置,涉及视频编解码领域。该方法包括:对于当前块,确定第一预设条件是否成立以及第二预设条件是否成立,该第一预设条件为第一方向上与当前块相邻的第一相邻块相关的预设条件,该第二预设条件为第二方向上与当前块相邻的第二相邻块相关的预设条件(S101),其中,第一方向与第二方向垂直;并且根据当前块的高度和宽度,确定当前块的第一标志位的上下文模型的子类编号(S102);以及根据第一预设条件的成立情况、第二预设条件的成立情况以及第一标志位的上下文模型的子类编号,确定当前块的第一标志位的上下文模型(S103)。该方法能够在一定程度上提高确定标志位的上下文模型的准确性,提高编解码性能。
Description
PCT国内申请,说明书已公开。
Claims (50)
- PCT国内申请,权利要求书已公开。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201862784690P | 2018-12-24 | 2018-12-24 | |
US62/784,690 | 2018-12-24 | ||
PCT/CN2019/127682 WO2020135371A1 (zh) | 2018-12-24 | 2019-12-23 | 一种标志位的上下文建模方法及装置 |
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CN113316939A true CN113316939A (zh) | 2021-08-27 |
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US (1) | US11985303B2 (zh) |
EP (1) | EP3886438A4 (zh) |
CN (1) | CN113316939A (zh) |
WO (1) | WO2020135371A1 (zh) |
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WO2024017259A1 (en) * | 2022-07-19 | 2024-01-25 | Douyin Vision Co., Ltd. | Method, apparatus, and medium for video processing |
Citations (5)
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CN1980395A (zh) * | 2005-11-30 | 2007-06-13 | 联合信源数字音视频技术(北京)有限公司 | 一种基于上下文的熵编码方法及解码方法 |
US20130195200A1 (en) * | 2012-01-28 | 2013-08-01 | Research In Motion Limited | Methods and devices for context modeling to enable modular processing |
US20170332095A1 (en) * | 2016-05-16 | 2017-11-16 | Qualcomm Incorporated | Affine motion prediction for video coding |
CN108432248A (zh) * | 2015-11-22 | 2018-08-21 | Lg电子株式会社 | 用于对视频信号进行熵编码和解码的方法和设备 |
CN108605130A (zh) * | 2015-11-27 | 2018-09-28 | 联发科技股份有限公司 | 用于视频和图像编码的熵编解码和上下文建模的方法和装置 |
Family Cites Families (7)
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---|---|---|---|---|
EP2362658A1 (en) * | 2010-02-26 | 2011-08-31 | Research In Motion Limited | Encoding and decoding methods and devices employing dual codesets |
PT3166317T (pt) * | 2011-10-31 | 2018-10-08 | Samsung Electronics Co Ltd | Método e aparelho para determinar um modelo de contexto para a transformação de nível de coeficiente de codificação e descodificação de entropia |
CN103929642B (zh) * | 2014-04-24 | 2017-04-12 | 北京航空航天大学 | 一种hevc变换系数的熵编码上下文模型偏移值快速计算方法 |
US11233998B2 (en) * | 2015-05-29 | 2022-01-25 | Qualcomm Incorporated | Coding data using an enhanced context-adaptive binary arithmetic coding (CABAC) design |
US10609423B2 (en) * | 2016-09-07 | 2020-03-31 | Qualcomm Incorporated | Tree-type coding for video coding |
CN106507106B (zh) * | 2016-11-08 | 2018-03-06 | 中国科学技术大学 | 基于参考片的视频帧间预测编码方法 |
US11082721B2 (en) * | 2017-09-07 | 2021-08-03 | Lg Electronics Inc. | Method and apparatus for entropy-encoding and entropy-decoding video signal |
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2019
- 2019-12-23 WO PCT/CN2019/127682 patent/WO2020135371A1/zh unknown
- 2019-12-23 CN CN201980084837.XA patent/CN113316939A/zh active Pending
- 2019-12-23 EP EP19902637.8A patent/EP3886438A4/en active Pending
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2021
- 2021-06-23 US US17/356,166 patent/US11985303B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1980395A (zh) * | 2005-11-30 | 2007-06-13 | 联合信源数字音视频技术(北京)有限公司 | 一种基于上下文的熵编码方法及解码方法 |
US20130195200A1 (en) * | 2012-01-28 | 2013-08-01 | Research In Motion Limited | Methods and devices for context modeling to enable modular processing |
CN108432248A (zh) * | 2015-11-22 | 2018-08-21 | Lg电子株式会社 | 用于对视频信号进行熵编码和解码的方法和设备 |
CN108605130A (zh) * | 2015-11-27 | 2018-09-28 | 联发科技股份有限公司 | 用于视频和图像编码的熵编解码和上下文建模的方法和装置 |
US20170332095A1 (en) * | 2016-05-16 | 2017-11-16 | Qualcomm Incorporated | Affine motion prediction for video coding |
Also Published As
Publication number | Publication date |
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US20210329225A1 (en) | 2021-10-21 |
WO2020135371A1 (zh) | 2020-07-02 |
EP3886438A4 (en) | 2022-01-19 |
US11985303B2 (en) | 2024-05-14 |
EP3886438A1 (en) | 2021-09-29 |
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