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
CN102292990BInactive Publication Date: 2016-10-05INTERDIGITAL CE PATENT HLDG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INTERDIGITAL CE PATENT HLDG
Publication Date
2016-10-05
Estimated Expiration
Not applicable · inactive patent

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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.
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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 ...

Claims

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