CN111919442A - 一种图像块的帧内模式预测方法及装置 - Google Patents

一种图像块的帧内模式预测方法及装置 Download PDF

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CN111919442A
CN111919442A CN201880091905.0A CN201880091905A CN111919442A CN 111919442 A CN111919442 A CN 111919442A CN 201880091905 A CN201880091905 A CN 201880091905A CN 111919442 A CN111919442 A CN 111919442A
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CN111919442B (zh
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张娜
安基程
郑建铧
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Huawei Technologies Co Ltd
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    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
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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
    • H—ELECTRICITY
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    • 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
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
    • H—ELECTRICITY
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    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/11—Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
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    • 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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    • H04N19/169—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
    • H04N19/186—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 a colour or a chrominance component
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    • 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
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Abstract

一种图像块的帧内模式预测方法及装置，提供了采用空域非邻接块或者时域邻近块来预测当前块的方式，提高了编解码性能。方法包括：构建第一亮度帧内模式集合，第一亮度帧内模式集合包括当前块所在的图像中与当前块不邻接的图像块的已确定亮度预测模式和/或与当前块时域邻近的图像块的已确定亮度预测模式；从码流中解析第一标识；当第一标识指示当前块的亮度预测模式属于第一亮度帧内模式集合时，从码流中解析第二标识，第二标识用于指示第一亮度帧内模式集合中一个候选亮度预测模式作为当前块的亮度预测模式；根据所述当前块的亮度预测模式，获得当前块的亮度预测值。

Description

PCT国内申请，说明书已公开。

Claims (45)

  1. PCT国内申请，权利要求书已公开。
CN201880091905.0A 2018-03-31 2018-03-31 一种图像块的帧内模式预测方法及装置 Active CN111919442B (zh)

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US11956421B2 (en) * 2019-05-10 2024-04-09 Hfi Innovation Inc. Method and apparatus of luma most probable mode list derivation for video coding
US20220150527A1 (en) * 2019-05-22 2022-05-12 Lg Electronics Inc. Method and device for decoding image by using bdpcm in image coding system
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CN111919442B (zh) 2023-04-04
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US20210014506A1 (en) 2021-01-14
EP3764644A1 (en) 2021-01-13

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