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:
Aug. 07, 2018
Filed:
Apr. 17, 2015
Vid Scale, Inc., Wilmington, DE (US);
Rahul Vanam, San Diego, CA (US);
Louis Kerofsky, San Diego, CA (US);
Yuriy Reznik, San Diego, CA (US);
Vid Scale, Inc., Wilmington, DE (US);
Abstract
A perceptual filter may be implemented to filter one or more spatial frequencies from a video signal that are below a contrast sensitivity limit of a viewer of the video signal. The perceptual filter may be configured to adapt one or more perceptual filter parameters on a pixel-basis based on, for example, content, viewing distance, display density, contrast ratio, display luminance, background luminance, and/or age of the viewer. A spatial cutoff frequency of the perceptual filter may be mapped to a contrast sensitivity. The perceptual filter may be used as a preprocessing step for a video encoder so as to lower an encoded bitrate. Temporal filtering of the video frames may be used to maintain continuity of a spatial cutoff frequency to ensure the perceptual filtering effects are not identified as motion by a video encoder, and the temporal filtering may be restricted to static areas of a frame.