Unlock instant, AI-driven research and patent intelligence for your innovation.

Loop filter encoding and decoding method and device

A technology of loop filtering and encoding method, which is applied in image communication, digital video signal modification, electrical components, etc., and can solve the problem that the loop filtering method cannot achieve a compromise between complexity and encoding efficiency

Active Publication Date: 2017-03-29
ZTE CORP
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the main purpose of the present invention is to provide a loop filter codec method and device to solve the problem that the existing loop filter method cannot effectively achieve a compromise between complexity and coding efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Loop filter encoding and decoding method and device
  • Loop filter encoding and decoding method and device
  • Loop filter encoding and decoding method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0160] In this embodiment, the organization and identification method of the above-mentioned loop filter mode in the parameter set and slice layer header information, and the method for the decoder to analyze the loop filter identification information corresponding to the loop filter mode in the code stream are described in detail. .

[0161] In this embodiment, the method of using variable length coding in a picture parameter set (PPS, Picture Parameter Set) to identify the ALF identification information corresponding to the ALF mode is taken as an example to illustrate the organization and identification of the loop filter mode in the parameter set method. Similarly, the loop filter modes can also be combined and identified in the data structures of other parameter sets.

[0162] Wherein, the ALF identification information includes a parameter for indicating the ALF identification mode, or includes a parameter for indicating the ALF identification mode and an auxiliary para...

Embodiment 2

[0197] The encoder of this embodiment uses a single ALF mode to encode the input video source to adapt to the trade-off requirements between the available information source encoding bit rate and the codec between computational complexity and encoding efficiency, such as Figure 4 As shown in , the specific process of encoding once using a single ALF mode includes the following steps:

[0198] S401, the sending end determines the ALF mode used when the encoder performs encoding;

[0199] Specifically, the main basis for the sender to determine the ALF mode includes, but is not limited to, one or more of the following factors: specific application requirements, available computing resources and storage resources in the encoding process, video source characteristics, and source encoding bit rate , processing capability of the receiving end, etc., so that an ALF mode with moderate performance between complexity and coding efficiency can be selected.

[0200] Wherein, the specifi...

Embodiment 3

[0210] The encoder in this embodiment comprehensively uses multiple ALF modes to encode the input video source, so as to adapt to the trade-off requirements between the available information source encoding bit rate and the codec between computational complexity and encoding efficiency.

[0211] like Figure 5 As shown, the specific process of encoding once using multiple ALF modes may include the following steps:

[0212] S501. The encoder generates multiple parameter sets corresponding to each ALF mode, and assigns a parameter set index number to each generated parameter set;

[0213] Specifically, each of the ALF modes includes 5 ALF modes, which are the 4 ALF modes shown in Table 2 of Embodiment 1, corresponding to when the value of adaptive_loop_filter_enable_fiag in Embodiment 1 is 0, indicating that all slices in the image are The ALF mode of ALF cannot be used.

[0214] Wherein, the ALF mode and the parameter set have a one-to-one correspondence or a one-to-many corres...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Disclosed is a loop filtering encoding method. The method comprises: setting a loop filtering mode for indicating an adopted manner for loop filtering during encoding; generating a parameter set according to the loop filtering mode; and performing encoding according to the generated parameter set. Correspondingly, a loop filtering decoding method, encoder, decoder and an electronic apparatus are further disclosed. The present invention implements the optimization and distribution of the complexity among images during the encoding and decoding, thereby enhancing the compromised performance between the encoder and decoder complexity and the encoding efficiency.

Description

technical field [0001] The present invention relates to video compression encoding technology, in particular to a loop filter encoding and decoding method and device. Background technique [0002] Currently, a typical application of loop filtering is an adaptive loop filter (ALF, Adaptive Loop Filter). The existing loop filtering method is described by taking ALF as an example. In video compression coding, the encoder and decoder use ALF to filter the decoded and restored image to further reduce the quantization noise of the restored image and improve the quality of the restored image. Since the decoded restored image will be used as a reference image in the motion compensation prediction process, ALF can also help to improve the efficiency of motion prediction and improve the coding efficiency. [0003] The prior art method for encoding ALF-related information mainly includes the following steps: Step 1, encoding identification information and necessary parameter informat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/46H04N19/102H04N19/157H04N19/174H04N19/82
CPCH04N19/102H04N19/117H04N19/157H04N19/174H04N19/46H04N19/82
Inventor 李明吴平张雯
Owner ZTE CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com