CN114402621A - 变换方法、逆变换方法、编码器、解码器及存储介质 - Google Patents

变换方法、逆变换方法、编码器、解码器及存储介质 Download PDF

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Publication number
CN114402621A
CN114402621A CN201980100486.7A CN201980100486A CN114402621A CN 114402621 A CN114402621 A CN 114402621A CN 201980100486 A CN201980100486 A CN 201980100486A CN 114402621 A CN114402621 A CN 114402621A
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China
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transformation
determining
point
dimensional
dimensional coordinate
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CN201980100486.7A
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Inventor
张伟
杨付正
万帅
马彦卓
霍俊彦
代娜
孙泽星
杨丽慧
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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 CN114402621A publication Critical patent/CN114402621A/zh
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/001—Model-based coding, e.g. wire frame
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F5/00—Methods or arrangements for data conversion without changing the order or content of the data handled
    • G06F5/01—Methods or arrangements for data conversion without changing the order or content of the data handled for shifting, e.g. justifying, scaling, normalising
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/007—Transform coding, e.g. discrete cosine transform
    • 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
    • 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
    • H04N19/597—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
    • 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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Discrete Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

本申请实施例提供的一种变换方法、逆变换方法、编码器、解码器及存储介质，包括：确定待编码点云中的预设空间内的待编码点的二维莫顿码；二维莫顿码为待编码点分别依次去掉三维坐标某一分量后得到的二维坐标对应莫顿码；对二维莫顿码右移K位，得到三维坐标分量分别对应的点集；K为大于1的正整数；从点集中，确定出三维坐标分量分别对应的包含待编码点数量最大的三维坐标分量分别对应的点数；基于三维坐标分量分别对应的点数，确定预设空间对应的变换顺序；基于预设空间对应的变换顺序，进行区域自适应分层变换RAHT变换；将变换顺序和RAHT变换后的属性编码结果，写入属性比特流。

Description

PCT国内申请，说明书已公开。

Claims (19)

  1. PCT国内申请，权利要求书已公开。
CN201980100486.7A 2019-09-30 2019-09-30 变换方法、逆变换方法、编码器、解码器及存储介质 Pending CN114402621A (zh)

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PCT/CN2019/109646 WO2021062732A1 (zh) 2019-09-30 2019-09-30 变换方法、逆变换方法、编码器、解码器及存储介质

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CN114402621A true CN114402621A (zh) 2022-04-26

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US (1) US20220207781A1 (zh)
EP (1) EP4040793A4 (zh)
CN (1) CN114402621A (zh)
WO (1) WO2021062732A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024017008A1 (zh) * 2022-07-21 2024-01-25 维沃移动通信有限公司 编码、解码方法、装置及设备

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WO2021138787A1 (zh) * 2020-01-06 2021-07-15 Oppo广东移动通信有限公司 一种帧内预测方法、编码器、解码器及存储介质

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CN103136535A (zh) * 2011-11-29 2013-06-05 南京理工大学常熟研究院有限公司 一种用于点云简化的k近邻搜索方法
US11297346B2 (en) * 2016-05-28 2022-04-05 Microsoft Technology Licensing, Llc Motion-compensated compression of dynamic voxelized point clouds
CN108171761B (zh) * 2017-12-13 2020-10-16 北京大学 一种基于傅里叶图变换的点云帧内编码方法及装置
US10853447B2 (en) * 2018-01-19 2020-12-01 8i Limited Bezier volume representation of point cloud attributes
US10853975B2 (en) * 2018-01-26 2020-12-01 Sony Corporation Hybrid projection-based point cloud texture coding
CN108833927B (zh) * 2018-05-03 2019-08-16 北京大学深圳研究生院 一种基于删除量化矩阵中0元素的点云属性压缩方法
JP7330306B2 (ja) * 2019-06-30 2023-08-21 オッポ広東移動通信有限公司 変換方法、逆変換方法、エンコーダ、デコーダ及び記憶媒体
CN113826385A (zh) * 2019-07-03 2021-12-21 Oppo广东移动通信有限公司 点云编解码方法、编码器、解码器及计算机存储介质

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024017008A1 (zh) * 2022-07-21 2024-01-25 维沃移动通信有限公司 编码、解码方法、装置及设备

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EP4040793A4 (en) 2023-01-11
US20220207781A1 (en) 2022-06-30
WO2021062732A1 (zh) 2021-04-08

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