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Filtering method of blocking-removing filter suitable for HEVC standard

A deblocking and filter technology, applied in digital video signal modification, electrical components, image communication, etc., can solve the problems of increasing processing time, reduce processing time, improve chip processing capability, and reduce the number of reading times Effect

Active Publication Date: 2014-01-01
FUDAN UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A hardware implementation using this order of filtering would result in multiple reads from external memory and increase processing time

Method used

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  • Filtering method of blocking-removing filter suitable for HEVC standard
  • Filtering method of blocking-removing filter suitable for HEVC standard
  • Filtering method of blocking-removing filter suitable for HEVC standard

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Embodiment Construction

[0017] The method of the present invention will be further specifically described below by way of examples and in conjunction with the accompanying drawings.

[0018] according to image 3 As shown, set:

[0019] p3,0, p2,0, p1,0, p0,0, q0,0, q1,0, q2,0, q3,0,

[0020] p3,1, p2,1, p1,1, p0,1, q0,1, q1,1, q2,1, q3,1,

[0021] p3,2, p2,2, p1,2, p0,2, q0,2, q1,2, q2,2, q3,2,

[0022] p3,3, p2,3, p1,3, p0,3, q0,3, q1,3, q2,3, q3,3,

[0023] The square matrix on the left is the value of 16 corresponding pixel points in the 4x4 P block; the square matrix on the right is the value of the 16 corresponding pixel points in the 4x4 Q block; among the two square matrices, the 8 in the first row The pixels are the first group, the 8 pixels in the second row are the second group, the 8 pixels in the third row are the third group, and the 8 pixels in the fourth row are the fourth group;

[0024] 1. Filter the Y component

[0025] like Figure 4 As shown in , filter in the order of 1, ...

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Abstract

The invention belongs to the technical field of high-definition digital video compression encoding and decoding and particularly relates to a filtering method of a block-removing filter suitable for the HEVC standard. Each image is set to comprise a luminance component Y which corresponds to two chrominance components Cb and Cr. Processing is performed in a block-removing filter module based on one quarter-LCU. Pixel blocks of the quarter-LCU needing to be processed are set to be provided with vertical edges and horizontal edges. The filtering sequence of the filtering method is that filtering is performed on the vertical edges and then on the horizontal edges; the vertical edges are sequentially filtered from left to right, and the pixel blocks on the two sides of each vertical edge are sequentially filtered from top to bottom; the horizontal edges are sequentially filtered from top to bottom, and the pixel blocks on the two sides of each horizontal edge are sequentially filtered from left to right. According to the filtering method of the block-removing filter suitable for the HEVC standard, the number of times of reading of an external storage device is effectively reduced, the processing time is shortened, the processing capability of a chip is improved, and therefore real-time encoding of a high-definition video is efficiently achieved.

Description

technical field [0001] The invention belongs to the technical field of high-definition digital video compression encoding and decoding, and is aimed at the HEVC video encoding and decoding standard, and in particular relates to a filtering method of a deblocking filter applicable to the HEVC video encoding standard. Background technique [0002] HEVC (High Efficiency Video Coding) is a next-generation video codec standard proposed by JCTVC, an organization jointly established by the International Telecommunications Organization (ITU) and the Motion Picture Experts Group (MPEG). The goal is to double the compression rate compared to the previous generation standard H.264 / AVC under the premise of the same visual effect. [0003] HEVC-based video encoder, its structure diagram is as follows figure 1 As shown, it is mainly composed of the following modules: intra prediction, inter prediction, transformation, quantization, inverse quantization, inverse transformation, reconstruc...

Claims

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Application Information

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IPC IPC(8): H04N19/117H04N19/13H04N19/61
Inventor 范益波沈蔚炜尚青曾晓洋
Owner FUDAN UNIV
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