CN114830658A - 变换方法、编码器、解码器以及存储介质 - Google Patents
变换方法、编码器、解码器以及存储介质 Download PDFInfo
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- CN114830658A CN114830658A CN201980103052.2A CN201980103052A CN114830658A CN 114830658 A CN114830658 A CN 114830658A CN 201980103052 A CN201980103052 A CN 201980103052A CN 114830658 A CN114830658 A CN 114830658A
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- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
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- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
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Abstract
本申请实施例公开了一种变换方法、编码器、解码器以及存储介质，编码器确定当前块的预测模式参数；当预测模式参数指示当前块使用CCLM确定帧内预测值时，确定CCLM参数；根据CCLM参数，确定当前块的帧内预测值，计算当前块与帧内预测值之间的预测差值；对预测差值进行第一次变换，得到第一系数矩阵；当当前块使用LFNST时，根据CCLM参数，确定当前块使用的LFNST系数扫描顺序；根据LFNST系数扫描顺序，使用第一系数矩阵构造LFNST的输入系数矩阵；对输入系数矩阵进行LFNST处理，得到当前块的变换系数矩阵；其中，第一次变换是不同于LFNST的变换，LFNST系数扫描顺序包括水平扫描顺序和垂直扫描顺序。
Description
PCT国内申请，说明书已公开。
Claims (20)
- PCT国内申请，权利要求书已公开。
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/130850 WO2021134637A1 (zh) | 2019-12-31 | 2019-12-31 | 变换方法、编码器、解码器以及存储介质 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114830658A true CN114830658A (zh) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201980103052.2A Pending CN114830658A (zh) | 2019-12-31 | 2019-12-31 | 变换方法、编码器、解码器以及存储介质 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US12058373B2 (zh) |
| EP (1) | EP4087246A4 (zh) |
| CN (1) | CN114830658A (zh) |
| WO (1) | WO2021134637A1 (zh) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10681379B2 (en) * | 2015-09-29 | 2020-06-09 | Qualcomm Incorporated | Non-separable secondary transform for video coding with reorganizing |
| US10595046B2 (en) * | 2016-05-13 | 2020-03-17 | Sony Corporation | Image processing apparatus and method |
| CN106254883B (zh) | 2016-08-02 | 2021-01-22 | 海信视像科技股份有限公司 | 一种视频解码中的反变换方法和装置 |
| US11019355B2 (en) * | 2018-04-03 | 2021-05-25 | Electronics And Telecommunications Research Institute | Inter-prediction method and apparatus using reference frame generated based on deep learning |
| WO2021086061A1 (ko) * | 2019-10-29 | 2021-05-06 | 엘지전자 주식회사 | 변환에 기반한 영상 코딩 방법 및 그 장치 |
-
2019
- 2019-12-31 WO PCT/CN2019/130850 patent/WO2021134637A1/zh unknown
- 2019-12-31 EP EP19958506.8A patent/EP4087246A4/en active Pending
- 2019-12-31 CN CN201980103052.2A patent/CN114830658A/zh active Pending
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2022
- 2022-06-17 US US17/807,671 patent/US12058373B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP4087246A1 (en) | 2022-11-09 |
| US20220329861A1 (en) | 2022-10-13 |
| US12058373B2 (en) | 2024-08-06 |
| WO2021134637A1 (zh) | 2021-07-08 |
| EP4087246A4 (en) | 2023-02-08 |
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