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.
Patent No.:
Date of Patent:
Nov. 27, 2018
Filed:
Jun. 30, 2017
Applicant:
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Inventors:
Assignee:
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm, SE;
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/12 (2006.01); H04N 19/86 (2014.01); H04N 19/176 (2014.01); H04N 19/61 (2014.01); H04N 19/117 (2014.01); H04N 19/14 (2014.01); H04N 19/82 (2014.01); H04N 19/80 (2014.01); H04N 19/182 (2014.01);
U.S. Cl.
CPC ...
H04N 19/865 (2014.11); H04N 19/117 (2014.11); H04N 19/14 (2014.11); H04N 19/176 (2014.11); H04N 19/182 (2014.11); H04N 19/61 (2014.11); H04N 19/80 (2014.11); H04N 19/82 (2014.11); H04N 19/86 (2014.11);
Abstract
Blocking artifacts at a block boundary between a block and a neighboring block in a video frame are reduced by calculating an offset based on pixel values of pixels in a line of pixels in the block and based on pixel values of pixels in a corresponding line of pixels in the neighboring block. The offset is added to the pixel value of the pixel closest to the block boundary in the line of pixels and is subtracted from the pixel value of the pixel closest to the block boundary in the corresponding line of pixels. The resulting deblocking filter has good low-pass characteristics and is efficient for reducing blocking artifact.