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Filtering method, device and equipment

A technology of deblocking filtering and pixel block, which is applied in the field of image processing and can solve the problem of low efficiency of deblocking filtering

Active Publication Date: 2014-04-02
HUAWEI CLOUD COMPUTING TECH CO LTD
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  • Description
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Problems solved by technology

[0004] Embodiments of the present invention provide filtering methods, devices, and equipment to solve the problem of low efficiency of deblocking filtering in the prior art

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  • Filtering method, device and equipment
  • Filtering method, device and equipment
  • Filtering method, device and equipment

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Embodiment Construction

[0057] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.

[0058] The purpose of video compression coding is to eliminate various redundancies to the greatest extent, including spatial redundancies, temporal redundancies, visual redundancies and coding redundancies. Among them, temporal redundancy can be eliminated through inter-frame prediction, spatial redundancy through intra-frame prediction, visual redundancy through transformation and quantization, and encoding redundancy through entropy coding. However, in the redundant process, block effects are unavoidable. For example, when t...

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Abstract

The embodiment of the invention discloses a filtering method, device and equipment. The method comprises the following steps: a first pixel block unit is converted into a second pixel block unit so as to ensure that the internal boundary of the second pixel block unit which is converted is the external boundary of the first pixel block unit; deblocking filtering is performed on the internal boundary of the second pixel block unit so as to obtain the pixel data modification value of the second pixel block unit. According to the embodiment of the invention, since the pixel block unit is converted, so that the external boundary of the first pixel block unit is converted into the internal boundary of the second pixel block unit, therefore, deblocking filtering can be performed on the internal boundary of each second pixel block unit; besides, only internal data of the pixel block units is required by deblocking filtering of the internal boundary, the data of adjacent pixel block units is not required, and caching of filtering data is not required during deblocking filtering, so that the operation process of filtering is simplified, cache resources are saved, and then the filtering efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a filtering method, device and equipment. Background technique [0002] With the rapid development of digital video technology, video images present the characteristics of high definition, high frame rate and high compression rate. ) protocol for video compression encoding, and the HEVC protocol can also be called the H.265 protocol. Among them, after the image is reconstructed by inverse transformation and inverse quantization, a deblocking filter (De-blocking Filter, DF) is used to remove the block effect generated during encoding. [0003] In the prior art, the largest coding unit (Large Code Unit, LCU) for deblocking filtering based on HEVC is composed of 256 4×4 pixel blocks, and each filtering object is an 8×8 pixel block composed of four 4×4 pixel blocks. The pixel block is equivalent to that each LCU needs to sequentially filter 64 8×8 pixel blocks. In order t...

Claims

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Application Information

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IPC IPC(8): H04N19/86H04N19/117H04N19/176
Inventor 郭文浩高剑刘钦
Owner HUAWEI CLOUD COMPUTING TECH CO LTD
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