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Length-adaptive deblocking filtering in video coding

A video encoding and decoding, code block technology, applied in the direction of digital video signal modification, electrical components, image communication, etc., can solve problems such as visible discontinuity at block boundaries

Active Publication Date: 2020-09-04
HFI INNOVATION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Block-based video compression results in visible discontinuities at block boundaries

Method used

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  • Length-adaptive deblocking filtering in video coding
  • Length-adaptive deblocking filtering in video coding
  • Length-adaptive deblocking filtering in video coding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] I. Video Encoder and Decoder with Deblocking Filter

[0055] figure 1 An encoder 100 is shown with a deblocking filter 130 according to an embodiment of the disclosure. The encoder 100 may include a decoded picture buffer 110, an intra-inter prediction module 112, a first adder 114, a residual encoder 116, an entropy encoder 118, a residual decoder 120, a second adder 122, and One or more in-loop filters, such as deblocking filter 130 , adaptive offset filter (SAO) 132 and adaptive loop filter (ALF) 134 . These components can be coupled together, such as figure 1 shown.

[0056] Encoder 100 receives input video data 101 and performs video compression processing to generate bitstream 102 as output. Input video data 101 may include a series of pictures. Each picture may include one or more color components, such as luma components or chrominance components. The bitstream 102 may have a format conforming to a video codec standard, such as the Advanced Video Codec (AV...

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PUM

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Abstract

A deblocking filtering method includes receiving reconstructed video data associated with a block boundary in a video coding system. The block boundary has N lines of samples crossing the block boundary from a P side to a Q side of the boundary. The method further includes determining whether to apply a first filter set to reduce block artifacts at the block boundary based on whether a first inter-side difference of a first line of the N lines of samples is greater than an inter-side difference threshold, determining a filter length of a filter in the first filter set based on a first side length of the P side, and a second side length of the Q side when it is determined to apply the first filter set, and applying at least one filter in the first filter set with the determined filter length on the block boundary.

Description

[0001] 【cross reference】 [0002] This application claims priority to the following application: U.S. Provisional Case 62 / 622,980, filed January 29, 2018, entitled "Length-AdaptiveDe-blocking Method for Image and Video Coding," the contents of which are hereby incorporated by reference . 【Technical field】 [0003] The present invention relates to video codec technology. 【Background technique】 [0004] Block-based video compression results in visible discontinuities at block boundaries. Deblocking modifies samples near block boundaries by using a deblocking filter, so that discontinuities at block boundaries can be smoothed and video quality can be improved. Visible discontinuities at block boundaries are called block artifacts. 【Content of invention】 [0005] The invention provides a video codec method. The method includes receiving reconstructed video data associated with a block boundary between codec blocks in a video codec system, the block boundary having N sample...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/117H04N19/86
CPCH04N19/117H04N19/132H04N19/137H04N19/14H04N19/159H04N19/176H04N19/182H04N19/46H04N19/80H04N19/82H04N19/86
Inventor 蔡佳铭庄子德徐志玮陈庆晔黄毓文
Owner HFI INNOVATION INC