CN114830659A - 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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- CN114830659A CN114830659A CN201980103082.3A CN201980103082A CN114830659A CN 114830659 A CN114830659 A CN 114830659A CN 201980103082 A CN201980103082 A CN 201980103082A CN 114830659 A CN114830659 A CN 114830659A
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- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
- H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
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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
- H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
- H04N19/122—Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
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- H04N19/169—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
- 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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- H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
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- H04N19/88—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving rearrangement of data among different coding units, e.g. shuffling, interleaving, scrambling or permutation of pixel data or permutation of transform coefficient data among different blocks
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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,该方法包括:确定当前块的预测模式参数;当所述预测模式参数指示所述当前块使用基于矩阵的帧内预测MIP确定帧内预测值时,确定MIP参数;根据MIP参数,确定当前块的帧内预测值,计算当前块与所述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;当所述当前块使用低频不可分离二次变换LFNST时,根据所述MIP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 (29)
- PCT国内申请,权利要求书已公开。
Applications Claiming Priority (1)
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PCT/CN2019/130127 WO2021134303A1 (zh) | 2019-12-30 | 2019-12-30 | 变换方法、编码器、解码器以及存储介质 |
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CN114830659A true CN114830659A (zh) | 2022-07-29 |
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Country | Link |
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US (1) | US20220329809A1 (zh) |
EP (1) | EP4109898A4 (zh) |
CN (1) | CN114830659A (zh) |
WO (1) | WO2021134303A1 (zh) |
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US11218728B2 (en) * | 2019-06-04 | 2022-01-04 | Tencent America LLC | Method and apparatus for video coding |
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US10681379B2 (en) * | 2015-09-29 | 2020-06-09 | Qualcomm Incorporated | Non-separable secondary transform for video coding with reorganizing |
AU2017261992A1 (en) * | 2016-05-13 | 2018-11-22 | Sony Corporation | Image processing device and method |
WO2018097691A2 (ko) * | 2016-11-28 | 2018-05-31 | 한국전자통신연구원 | 영상 부호화/복호화 방법, 장치 및 비트스트림을 저장한 기록 매체 |
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 |
US11252410B2 (en) * | 2019-06-11 | 2022-02-15 | Tencent America LLC | Method and apparatus for video coding |
US20210092405A1 (en) * | 2019-09-19 | 2021-03-25 | Qualcomm Incorporated | Matrix combination for matrix-weighted intra prediction in video coding |
WO2021086152A1 (ko) * | 2019-11-01 | 2021-05-06 | 엘지전자 주식회사 | 변환에 기반한 영상 코딩 방법 및 그 장치 |
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2019
- 2019-12-30 EP EP19958126.5A patent/EP4109898A4/en active Pending
- 2019-12-30 WO PCT/CN2019/130127 patent/WO2021134303A1/zh unknown
- 2019-12-30 CN CN201980103082.3A patent/CN114830659A/zh active Pending
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2022
- 2022-06-17 US US17/807,639 patent/US20220329809A1/en active Pending
Also Published As
Publication number | Publication date |
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EP4109898A1 (en) | 2022-12-28 |
US20220329809A1 (en) | 2022-10-13 |
WO2021134303A1 (zh) | 2021-07-08 |
EP4109898A4 (en) | 2023-01-11 |
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