US 11,388,445 B1Granted

Mosquito noise smoothing between different video subsections encoded with different compression methods within a video frame

OwnerYendo Huinventor

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Abstract

At least a method and an apparatus are provided for efficiently encoding or decoding a video frame to smooth out or reduce visual distortions such as mosquito noise between different video subsections encoded with different compression methods within a video frame. For example, a plurality of surrounding neighboring video subsections of the video frame are compressed using a first compression method (e.g., inter coding), with an associated first compression parameter set. The center video subsection of the video frame is twice compressed, first with the same first compression method, then with a different, second compression method (e.g., intra coding). Therefore, the mosquito noise or visual artifact is reduced between the video subsections encoded with the different compression methods.

Claims10

Dependent claims

A method performed by an apparatus having one or more processors for encoding an input video frame into an output compressed video frame, wherein the input video frame comprising a plurality of surrounding neighboring video subsections surrounding a center video subsection, the method comprising:

filtering the plurality of surrounding neighboring video subsections;
compressing the filtered plurality of surrounding neighboring video subsections using a first compression method with an associated first compression parameter set;
filtering the center video subsection;
compressing the filtered center video subsection using the first compression method with the associated first compression parameter set;
decompressing the compressed filtered center video subsection using a first decompression method corresponding to the first compression method;
compressing again the decompressed filtered center video subsection using a second compression method;
forming the output compressed video frame wherein the output compressed video frame comprising the plurality of compressed filtered surrounding neighboring video subsections surrounding the compressed again decompressed filtered center video subsection.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/691,268Filed 10 Mar 2022
Granted: 12 Jul 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04N 19/86
Using pre-processing or post-processing specially adapted for video compression: involving reduction of coding artifacts, e.g. of blockiness
H04N 19/117
Characterised by the element, parameter or selection affected or controlled by the adaptive coding: filters, e.g. for pre-processing or…
H04N 19/124
Characterised by the element, parameter or selection affected or controlled by the adaptive coding: quantisation
H04N 19/157
Characterised by the element, parameter or criterion affecting or controlling the adaptive coding: assigned coding mode, i.e. the coding mode…