CN114830664A - 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 PDF

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Publication number
CN114830664A
CN114830664A CN201980103146.XA CN201980103146A CN114830664A CN 114830664 A CN114830664 A CN 114830664A CN 201980103146 A CN201980103146 A CN 201980103146A CN 114830664 A CN114830664 A CN 114830664A
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China
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lfnst
mip
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current block
sequence number
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CN201980103146.XA
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Inventor
霍俊彦
李新伟
乔文涵
马彦卓
万帅
杨付正
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Publication of CN114830664A publication Critical patent/CN114830664A/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

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；根据所述MIP参数，确定所述当前块的帧内预测值，计算所述当前块与所述帧内预测值之间的预测差值；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，确定所述当前块使用的LFNST变换核，设置LFNST索引序号并写入视频码流；使用所述LFNST变换核，对所述预测差值进行变换处理。

Description

PCT国内申请，说明书已公开。

Claims (31)

  1. PCT国内申请，权利要求书已公开。
CN201980103146.XA 2019-12-30 2019-12-30 变换方法、编码器、解码器以及存储介质 Pending CN114830664A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/130157 WO2021134327A1 (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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CN114830664A true CN114830664A (zh) 2022-07-29

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US (1) US20220329862A1 (zh)
EP (1) EP4087253A4 (zh)
CN (1) CN114830664A (zh)
WO (1) WO2021134327A1 (zh)

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WO2024007120A1 (zh) * 2022-07-04 2024-01-11 Oppo广东移动通信有限公司 编解码方法、编码器、解码器以及存储介质

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* Cited by examiner, † Cited by third party
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EP3335422B1 (en) * 2015-12-23 2021-12-01 Huawei Technologies Co., Ltd. Method and apparatus for transform coding with block-level transform selection and implicit signaling within hierarchical partitioning
CN114339229B (zh) * 2016-05-04 2024-04-12 夏普株式会社 用于对变换数据进行编码的系统和方法
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

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EP4087253A1 (en) 2022-11-09
EP4087253A4 (en) 2023-01-25
WO2021134327A1 (zh) 2021-07-08
US20220329862A1 (en) 2022-10-13

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