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Picture decoding and encoding method, decoding and encoding device, decoder and encoder

An image decoding and image technology, applied in the field of communication, can solve the problems of poor video viewing quality, high coding overhead of shaping parameters, etc.

Active Publication Date: 2017-07-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides an image decoding and encoding method, decoding and encoding device, decoder and encoder to at least solve the problems of poor video viewing quality and high coding overhead of shaping parameters in the related art

Method used

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  • Picture decoding and encoding method, decoding and encoding device, decoder and encoder
  • Picture decoding and encoding method, decoding and encoding device, decoder and encoder
  • Picture decoding and encoding method, decoding and encoding device, decoder and encoder

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specific Embodiment 1

[0067] This embodiment is a method for decoding and processing an HDR video, which is used in a device for decoding and processing an HDR video. The input of the device is an HDR video code stream or a transport stream or a media file containing the HDR video code stream, and the output is a restored HDR video for playback. This embodiment comprises the steps:

[0068] Step 1: Parsing the code stream to obtain shaping parameters from image and / or slice layer data units.

[0069] The decoding processing device parses the input code stream. If the input code stream is a transport stream or a media file containing the HDR video code stream, extract the HDR video code stream from the transport stream or the media file.

[0070] The decoding processing device analyzes the PPS parameter set index number contained in the slice header information contained in each AU in the HDR video stream, and searches for the index number in the PPS data unit and the parameter set index obtained ...

specific Embodiment 2

[0083] This embodiment is a method for decoding and processing an HDR video, which is used in a device for decoding and processing an HDR video. The input of the device is an HDR video code stream or a transport stream or a media file containing the HDR video code stream, and the output is a restored HDR video for playback. This embodiment comprises the steps:

[0084] Step 1: Parsing the code stream to obtain shaping parameters from image and / or slice layer data units.

[0085] The decoding processing device parses the input code stream. If the input code stream is a transport stream or a media file containing the HDR video code stream, extract the HDR video code stream from the transport stream or the media file.

[0086] The decoding processing device analyzes the PPS parameter set index number contained in the slice header information contained in each AU in the HDR video stream, and searches for the index number in the PPS data unit and the parameter set index obtained ...

specific Embodiment 3

[0097] This embodiment is a method for decoding and processing an HDR video, which is used in a device for decoding and processing an HDR video. The input of the device is an HDR video code stream or a transport stream or a media file containing the HDR video code stream, and the output is a restored HDR video for playback. This embodiment comprises the steps:

[0098] Step 1: Parsing the code stream to obtain shaping parameters from image and / or slice layer data units.

[0099] The decoding processing device parses the input code stream. If the input code stream is a transport stream or a media file containing an HDR video code stream, the HDR video code stream is extracted from the above transport stream or media file.

[0100] The decoding processing device analyzes the PPS parameter set index number contained in the slice header information contained in each AU in the HDR video stream, and searches for the index number in the PPS data unit and the parameter set index obt...

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Abstract

The present invention provides a picture decoding and encoding method, a decoding and encoding apparatus, a decoder and an encoder. The picture decoding method includes the following steps that: a video code stream is analyzed, shaping parameters are obtained from the picture and / or slice layer data of the video code stream, and shaping parameters used by a restoration picture are determined according to the obtained shaping parameters, wherein the picture and / or slice layer data contain at least one of the data units of a picture and / or slice layer parameter set which is different from a picture parameter set (PPS), a parameter data unit and slice header information which are contained in an access unit (AU) corresponding to the restoration picture, and a system-layer picture parameter data unit; and the shaping parameters used for the restoration image are used to perform shaping processing on the restoration image, wherein the restoration image is an image which is obtained by decoding the video code stream before shaping processing. With the picture decoding and encoding method, the decoding and encoding device, the decoder and the encoder of the invention adopted, the problems of poor video viewing quality and large cost of the encoding of shaping parameters are in the prior art can be solved.

Description

technical field [0001] The present invention relates to the communication field, in particular to an image decoding and encoding method, a decoding and encoding device, a decoder and an encoder. Background technique [0002] Currently, the International Standards Organization is developing an extension standard for high dynamic range video (High Dynamic Range, HDR for short) based on the H.265 / HEVC standard. The HDR extension standard intends to use the "Reshaper" signal processing framework to construct a test model. At the head end, the shaper processes the input HDR video into an input video suitable for the H.265 / HEVC Main 10 Profile encoder (such as a standard dynamic range image (Standard Dynamic Range, referred to as SDR) video); at the receiver end, the shaper Use the reverse operation of the head end to process the decoded and restored SDR video of the H.265 / HEVCMain 10 Profile decoder into an HDR video. At the same time, if the HDR video and the SDR video use dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/44H04N19/30H04N19/98
CPCH04N19/30H04N19/70H04N19/174H04N19/184H04N19/85H04N19/98H04N19/117H04N19/154H04N19/196
Inventor 李明吴平吴钊尚国强
Owner ZTE CORP
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