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Method and device for sparsity-based anti-artifact filtering for video encoding and decoding

A video encoding and artifact removal technology, applied in the field of video encoding and decoding, can solve problems such as increasing transmission overhead

Inactive Publication Date: 2016-10-05
INTERDIGITAL CE PATENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the seventh prior art method, the filter coefficients are explicitly sent as overhead in the bitstream, thereby increasing the transmission overhead

Method used

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  • Method and device for sparsity-based anti-artifact filtering for video encoding and decoding
  • Method and device for sparsity-based anti-artifact filtering for video encoding and decoding
  • Method and device for sparsity-based anti-artifact filtering for video encoding and decoding

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Embodiment Construction

[0050] The present principles focus on methods and apparatus for sparsity-based filtering for video encoding and decoding.

[0051] This description illustrates the present principles. It should thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described or shown herein, embody the present principles and are included within its spirit and scope.

[0052] All examples and conditional language recited herein are intended for the purpose of aiding the reader in understanding the principles and teachings of concepts contributed by the inventor(s) to the advancement of the art and should be construed as limiting the scope of such specific recitation Limitations of Examples and Conditions.

[0053] Moreover, all statements herein reciting principles, aspects, and embodiments of the present principles, as well as specific examples thereof, are intended to encompass both structural and functional equivalents th...

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Abstract

Provided are a method and device for performing sparsity-based anti-artifact filtering on video encoding and decoding. The apparatus comprises an encoder (400) for encoding at least a portion of an image by grouping regions within said portion based on a grouping metric, transforming the grouped regions, using de-artifact filtering included in the encoder A filter (413) adaptively performs de-artifact filtering on the transformed region, inverse transforms the de-artifacted region to create a replacement region, and restores the replacement region to the location where the image of the region was taken before grouping.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application Serial No. 61 / 117,807, filed November 25, 2008, which is hereby incorporated by reference in its entirety. technical field [0003] The present principles generally relate to video encoding and decoding, and more specifically, to methods and devices for performing sparsity-based anti-artifact filtering on video encoding and decoding. Background technique [0004] Many hybrid video coding techniques employ motion compensation and block-based transforms (eg, discrete cosine transform (DCT)) to reduce spatial and temporal domain dependencies. Coarse quantization of transform coefficients and lack of visual quality constraints in rate-distortion (RD) based optimization can cause visual artifacts. [0005] In the International Organization for Standardization / International Electrotechnical Commission (ISO / IEC) Moving Picture Experts Group-4 (MPEG-4) Part 10 ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/102
CPCH04N19/86H04N19/117H04N19/14H04N19/154H04N19/157H04N19/18H04N19/61H04N19/70H04N19/80
Inventor 许军乔尔.索尔尹鹏郑云飞
Owner INTERDIGITAL CE PATENT HLDG
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