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Method for encoding and decoding image using adaptive deblocking filtering, and apparatus therefor

An adaptive filtering and self-adaptive technology, applied in the field of image encoding and decoding, which can solve the problems of complex filtering calculation and frequent memory access, etc.

Active Publication Date: 2018-04-17
DOLBY LAB LICENSING CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The filtered pixels are stored in memory, and thus cause frequent memory access
Also, in the deblocking filter method, the filter calculation processing is complicated
Decoder has 20-30% large complexity due to computational complexity and overhead for memory access

Method used

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  • Method for encoding and decoding image using adaptive deblocking filtering, and apparatus therefor
  • Method for encoding and decoding image using adaptive deblocking filtering, and apparatus therefor
  • Method for encoding and decoding image using adaptive deblocking filtering, and apparatus therefor

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Embodiment Construction

[0092] While various modifications can be made to the invention, and various embodiments of the invention are possible, examples of the invention will now be provided and described in detail with reference to the accompanying drawings. However, the present invention is not limited thereto, and the exemplary embodiments can be construed to include all modifications, equivalents, or substitutes within the technical concept and technical scope of the present invention.

[0093] The terms 'first', 'second', etc. used in the specification may be used to describe various components, but these components should not be construed as being limited by these terms. These terms are only used to distinguish one component from another. For example, a "first" component could be renamed as a "second" component without departing from the scope of the present invention, and a "second" component could be similarly renamed as a "first" component. The term "and / or" includes a combination of multip...

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Abstract

Disclosed are an encoding / decoding method relating to adaptive deblocking filtering, and an apparatus therefor. An image decoding method for performing an adaptive filtering in inter-prediction is provided. The method comprises the steps of: restoring, from a bitstream, an image signal including a reference block which is block-matched during inter-prediction of a current block to be decoded; obtaining, from the bitstream, a flag indicating whether or not the reference block exists in a current picture in which the current block is located; restoring the current block using the reference block; adaptively applying an in-loop filter to the restored current block on the basis of the obtained flag; and storing, in a decoded picture buffer (DPB), the current block to which the in-loop filter is applied or not applied.

Description

technical field [0001] The present invention relates to image encoding and decoding techniques. More particularly, the present invention relates to a method for encoding and decoding an image using adaptive deblocking filtering according to a prediction mode and an apparatus thereof. Background technique [0002] With the popularization of the Internet and mobile terminals and the development of information and communication technology, the use of multimedia data has increased. Therefore, in order to perform various services and operations in various systems through image prediction, the need to improve the performance and efficiency of image processing systems has rapidly increased. [0003] Meanwhile, in the existing image coding / decoding technology, in the inter-frame prediction method, the motion information of the adjacent blocks of the current block is predicted in at least one reference picture located before or after the current picture, or in the intra-frame predic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/51H04N19/119H04N19/50H04N19/86H04N19/60H04N19/117H04N19/103
CPCH04N19/577H04N19/117H04N19/176H04N19/51H04N19/91H04N19/593H04N19/103H04N19/172H04N19/86H04N19/124H04N19/82H04N19/107H04N19/119H04N19/137H04N19/184H04N19/58H04N19/70H04N19/60H04N19/50
Inventor 郑济昌金起佰
Owner DOLBY LAB LICENSING CORP
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