Loop filtering method, loop filtering device, electronic device and readable medium

A loop filter and filter technology, applied in electrical components, image communication, digital video signal modification and other directions, can solve the problem of filter data dependence, etc., to achieve the effect of solving data dependence

Active Publication Date: 2021-07-13
BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the problems existing in the related technologies, the present application discloses a loop filtering method, a loop filtering device, electronic equipment, and a readable medium. The loop filtering method sets a virtual boundary outside the coding tree unit to solve the filter The problem of data dependence when filtering

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  • Loop filtering method, loop filtering device, electronic device and readable medium
  • Loop filtering method, loop filtering device, electronic device and readable medium
  • Loop filtering method, loop filtering device, electronic device and readable medium

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Embodiment Construction

[0055] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0056] figure 2 Shown is a schematic diagram of a video coding system incorporating in-loop adaptive filtering processing.

[0057]The input picture is encoded by intra prediction 110 or inter prediction (ie, motion estimation / motion compensation) 112 . For inter prediction, inter prediction 112 provides prediction data based on video data from other single pictures or pictures. A sw...

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Abstract

The present application relates to a loop filtering method, a loop filtering device, electronic equipment and a readable medium. The loop filtering method includes: setting a virtual boundary outside the actual boundary of the coding tree unit according to the filter size and shape; filling virtual pixel samples between the actual boundary and the virtual boundary; and when the coding tree unit When loop filtering is performed on multiple pixels in , the virtual pixel samples are used to replace pixels outside the actual boundary of the coding tree unit to perform loop filtering. This method sets a virtual boundary outside the actual boundary, and sets virtual pixel samples between the virtual boundary and the actual boundary, so that when adaptive loop filtering is performed, virtual pixel samples can be used to solve the data dependence between coding tree units .

Description

technical field [0001] The present application belongs to the field of video image processing, in particular to a loop filtering method, a loop filtering device, electronic equipment and a readable medium. Background technique [0002] In video coding technology, loop filtering is one of the important technologies. This technology filters the reconstructed image by encoding the filter coefficients to reduce the compression distortion in the image. Before HEVC Test Model 7 (HM-7), a loop filtering technique, called Adaptive Loop Filtering (ALF), was included in the test model. To optimize performance, ALF uses Wiener filtering techniques to derive filter coefficients. Filter coefficients are encoded in an Adaptation Parameter Set (APS). [0003] According to High Efficiency Video Coding (HEVC), a picture (image frame) is divided into multiple non-overlapping largest coding units (Largest Coding Unit, LCU), also known as coding tree blocks (Coding Tree Unit, CTU) . In the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/117H04N19/186H04N19/182H04N19/70H04N19/96
CPCH04N19/117H04N19/182H04N19/186H04N19/70H04N19/96
Inventor 陈宇聪闻兴郑云飞陈敏王晓楠蔡砚刚黄跃于冰
Owner BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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