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:
Mar. 31, 2020
Filed:
Sep. 16, 2016
Sisvel Technology S.r.l., None, IT;
Politecnico Di Torino, Turin, IT;
Giulia Fracastoro, Turin, IT;
Enrico Magli, Turin, IT;
SISVEL TECHNOLOGY S.R.L., None (TO), IT;
Abstract
Methods and apparatuses for encoding and/or decoding digital images or video streams, wherein the encoding apparatus includes a processor configured for reading a portion of the image (f), computing difference values between pixel values of the image, quantizing such pixel difference values for obtaining a quantized weight map (W), computing an edge map (f') composed by elements (f′) indicating whether a corresponding pixel of the portion of the image is an edge or not on the basis of the quantized weight map, determining a reconstructed weight map (W′) on the basis of the edge map (f′), determining a graph transform matrix (U) on the basis of the reconstructed weight map (W′), computing transform coefficients (f{circumflex over ( )}) on the basis of the graph transform matrix (U) and said portion of the image (f), transmitting the computed transform coefficients (f{circumflex over ( )}) and the edge map (f′).