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:
Jul. 04, 2023
Filed:
Feb. 01, 2017
Method and apparatus for encoding/decoding video signal by using edge-adaptive graph-based transform
Lg Electronics Inc., Seoul, KR;
University of Southern California, Los Angeles, CA (US);
Yung-Hsuan Chao, Los Angeles, CA (US);
Hilmi E. Egilmez, Los Angeles, CA (US);
Antonio Ortega, Los Angeles, CA (US);
Sehoon Yea, Seoul, KR;
Bumshik Lee, Seoul, KR;
LG ELECTRONICS INC., Seoul, KR;
UNIVERSITY OF SOUTHERN CALIFORNIA, Los Angeles, CA (US);
Abstract
The present invention provides a method for encoding a video signal based on an Edge Adaptive Graph-Based Transform (EA-GBT) including detecting a step edge or a ramp edge from a residual signal; generating a graph signal based on at least one of the step edge or the ramp edge; obtaining an EA-GBT coefficient by performing the EA-GBT for the graph signal; quantizing the EA-GBT coefficient; and entropy-encoding the quantized EA-GBT coefficient.