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Image component prediction method, encoder, decoder, and computer storage medium

A decoder and encoder technology, which is applied to the prediction of image components, encoders, decoders and computer storage media, can solve problems such as affecting encoding and decoding efficiency, low accuracy of prediction values, etc., and achieve the effect of improving accuracy

Active Publication Date: 2021-12-24
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, since the luminance component has rich texture, while the chrominance component is relatively flat, using the luminance component to predict the chrominance component causes a large deviation between the predicted chrominance component and the real chrominance value, resulting in the accuracy of the predicted value Low performance, which affects the efficiency of encoding and decoding

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  • Image component prediction method, encoder, decoder, and computer storage medium
  • Image component prediction method, encoder, decoder, and computer storage medium
  • Image component prediction method, encoder, decoder, and computer storage medium

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Embodiment 1

[0036] In a video image, the first image component, the second image component and the third image component are generally used to characterize the image block; wherein, the first image component, the second image component and the third image component may include a luminance component and two Chroma component. Specifically, the luminance component is usually represented by the symbol Y, and the chrominance components are usually represented by the symbols Cb and Cr, wherein Cb is represented as a blue chroma component, and Cr is represented as a red chroma component.

[0037] It should be noted that, in the embodiment of the present application, the first image component, the second image component and the third image component may be respectively the luminance component Y, the blue chrominance component Cb and the red chrominance component Cr, for example, the first The image component may be a luminance component Y, the second image component may be a red chrominance compo...

Embodiment 2

[0189] Based on the same inventive idea, Figure 5 A schematic structural diagram of an optional encoder proposed for the embodiment of this application, such as Figure 5 As shown, the encoder proposed in the embodiment of the present application may include an encoding module 51 and a first acquisition module 52; wherein,

[0190] The encoding module 51 is configured to encode the chrominance component in the encoding of the image component;

[0191] The first obtaining module 52 is configured to obtain the predicted value of the luma component according to the coded chroma component.

[0192] Further, the first acquisition module 52 is specifically configured as:

[0193] Predict according to the first chrominance component in the encoded chrominance component and the second chrominance component in the encoded chrominance component, to obtain the predicted value of the luma component;

[0194]Wherein, when the first chroma component is a blue chroma component, the secon...

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Abstract

Disclosed in the embodiments of the application are an image component prediction method, an encoder, and a computer storage medium, the method comprising: when encoding an image component, encoding a chroma component; according to the encoded chroma component, acquiring a prediction value for a brightness component.

Description

[0001] This application is a PCT international patent application PCT / CN2019 / 124114 with an application date of December 9, 2019, which entered the Chinese national phase. The Chinese patent application number 201980091480.8, the title of the invention is "prediction method, encoder, decoder and computer of image components" storage medium" divisional application. technical field [0002] Embodiments of the present application relate to intra-frame prediction technologies in the field of video coding, and in particular, to a method for predicting image components, an encoder, a decoder, and a computer storage medium. Background technique [0003] In the next-generation video coding standard H.266 or Versatile Video Coding (VVC), cross-component prediction can be realized through the color component linear model prediction method (Cross-component Linear Model Prediction, CCLM). , based on the dependencies between the components, the chroma components can be predicted from the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/186
CPCH04N19/186H04N19/105H04N19/196H04N19/59H04N19/44H04N19/132H04N19/176
Inventor 霍俊彦万帅马彦卓张伟
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD