Method for Eliminating Blocking Effect of Video Coding Image

A video coding and image block technology, applied in image communication, digital video signal modification, electrical components, etc., can solve the problems of large amount of calculation, long time consumption, inapplicability of video coding image matrix, etc., and achieve low complexity, The effect of removing blockiness

Active Publication Date: 2019-02-22
PEKING UNIV
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Problems solved by technology

[0004] The disadvantage of a singular value decomposition algorithm for eliminating the block effect of the video coding image matrix in the above-mentioned prior art is: this method needs to completely decompose the video coding image matrix, the calculation amount is relatively large, and the time consumption is relatively long
However, in the process of eliminating the block effect of the video coding image matrix, usually not all the singular values ​​are used in the calculation. not available in matrix

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  • Method for Eliminating Blocking Effect of Video Coding Image

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[0048] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0049] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...

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Abstract

The embodiment of the invention provides a method for eliminating the block effect of video coding images. According to the method, summation normalization operation is performed on a matrix from rows and columns based on the linear transformation property of the matrix, the maximum singular value and the corresponding left and right singular vectors of a current matrix module are worked out through iteration, and the purpose of quick singular value calculation is achieved. Through the method, singular value decomposition filtering operation can be carried out under the condition that the matrix is not decomposed completely, the algorithm complexity is reduced effectively during low-rank matrix processing, and the accuracy of the singular value can be adjusted according to the actual need in the algorithm. The method can be effectively applied to matrix singular value decomposition operation in the process of video coding and filtering requiring high real-time performance to effectively eliminate the difference between rows and between columns in a video coding image matrix, improve the visual effect of video coding images and improve the coding performance.

Description

technical field [0001] The invention relates to the field of digital signal processing, in particular to a method for eliminating video coding image block effect. Background technique [0002] In the loop filtering process of the video coding framework, the difference between the row and the row of the video coding image matrix, and the difference between the column and the column is often relatively large, resulting in block effects, and the singular value decomposition algorithm needs to be used to eliminate the blocks of the video coding image matrix effect. [0003] As an important matrix decomposition algorithm, singular value decomposition algorithm has a wide range of applications in image processing, computer vision, recommendation system, text mining, information retrieval and other fields. A singular value decomposition algorithm for eliminating the block effect of a video coding image matrix in the prior art mainly includes: diagonalizing and iteratively solving ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/86H04N19/42
CPCH04N19/42H04N19/86
Inventor 张健贾川民马思伟
Owner PEKING UNIV
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