The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 24, 2025

Filed:

Jan. 31, 2022
Applicant:

Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;

Inventors:

Jacob Ström, Stockholm, SE;

Per Wennersten, Årsta, SE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 19/117 (2014.01); H04N 19/167 (2014.01); H04N 19/196 (2014.01); H04N 19/176 (2014.01);
U.S. Cl.
CPC ...
H04N 19/117 (2014.11); H04N 19/167 (2014.11); H04N 19/196 (2014.11); H04N 19/176 (2014.11);
Abstract

There is provided a method for encoding one or more images. The method comprises filtering, with a first filter, input samples I(x,y) to generate a first filtered output Ifirst(x,y)=I(x,y)+ΔIfirst(x,y). The method comprises estimating parameters for a second filter based at least in part on the first filtered output Ifirst(x,y), the input samples I(x,y), and original samples Iorig(x,y). The method comprises filtering, with the second filter, input samples I(x,y) to generate a second filtered output Isecond(x,y)=I(x,y)+ΔIsecond(x,y), wherein filtering, with the second filter, is based at least in part on the parameters estimated for the second filter. The method comprises generating a combined output ICOMB(x,y)=I(x,y)+ΔIfirst(x,y)+ΔIsecond(x,y).


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