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Coding and decoding method of color list and device and medium

A codec method and color list technology, applied in the field of devices and media, color list codec method, can solve the problem of large consumption, and achieve the effect of reducing the number of bits

Active Publication Date: 2021-11-16
SUN YAT SEN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0007] It can be seen from the existing coding method of the color components of the palette that this method simply performs a binary representation of each color component value in the color list, and does not use the relevant information of the color list for redundancy. removal, so encoding consumes a lot of bits to encode unnecessary redundant information

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  • Coding and decoding method of color list and device and medium
  • Coding and decoding method of color list and device and medium
  • Coding and decoding method of color list and device and medium

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Embodiment Construction

[0070] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0071] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a color list encoding and decoding method, refer to figure 1 , the method of the present invention comprises:

[0072] Acquire the color space of the color list in the palette, the color space includes a brightness component of the color and a chroma component of the color, and the chroma component of the color includes a first chroma component and a second chroma component;

[0073] Encoding the first chrominance component of the color list by means of differential p...

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Abstract

The invention discloses a color list coding and decoding method and a device and a medium, and the method comprises the steps: obtaining a color space of a color list in a palette, the color space comprises a brightness component of a color and a chrominance component of the color, and the chrominance component of the color comprises a first chrominance component and a second chrominance component; coding the first chrominance component of the color list by adopting a differential pulse code modulation mode to obtain a first coding result; coding the brightness component and the second chrominance component in the color list by adopting a cross-component linear prediction mode based on a linear model to obtain a second coding result; and performing first decoding processing on the first coding result and performing second decoding processing on the second coding result to complete coding and decoding processing on the color list. According to the invention, the number of bits required by coding can be effectively reduced. The method can be widely applied to the technical field of video coding.

Description

technical field [0001] The present invention relates to the technical field of video encoding, in particular to a color list encoding and decoding method, device and medium. Background technique [0002] In Versatile Video Coding (VVC), a new generation of video compression standard developed by ITU-T / ISO / IEC Joint Video Experts Team (JVET), screen content coding is one of its important target applications. Palette, as an efficient screen content compression tool, has been studied in the previous standard HEVC, and VVC further optimizes the palette mode and adds it to the standard as an independent mode . The VVC reference software officially joined the palette mode after the sixth version VTM6, and it is required to open this mode when testing the SSC sequence. [0003] In the VVC standard, when the palette mode is allowed, a flag is sent to indicate whether to use the palette for a coding unit (Coding Unit, CU) that is less than or equal to 64*64 and has more than 16 sam...

Claims

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Application Information

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IPC IPC(8): H04N19/186H04N19/90
CPCH04N19/186H04N19/90
Inventor 梁凡莫铭鸿
Owner SUN YAT SEN UNIV