LUMINANCE COMFORT PREDICTION AND ADJUSTMENT

Number: 20180218709
Published: 2018-08-02
Filed: 2017-02-01
Assignee: Disney Enterprises, Inc.
Inventors: AYDIN; TUNC OZAN; MAHMALAT; SAMIR
CPC: G09G5/005; G09G5/10; G09G5/02
Verdict: Low Hardware
Source: Google Patents · FreePatentsOnline

The keeper's note

Display luminance-comfort adjustment system.

Abstract

One or more levels of maladaptation are calculated relative to frames of media content having abrupt jumps from periods of low illumination to bright illumination when visual acuity may be lost and/or discomfort may be experienced. These levels of maladaptation may be correlated with subjectively determined levels of perceived luminance discomfort. Based upon the levels of perceived luminance discomfort that can be derived from the levels of maladaptation, the media content may be adjusted.

Background

TECHNICAL FIELD

The present disclosure relates generally to image processing.DESCRIPTION OF THE RELATED ART

Interest in distributing video or other visual content having high dynamic range (HDR) is growing due to its ability to provide an enhanced viewing experience compared to conventional standard dynamic range (SDR) content. However, content that is filmed in HDR and/or presented on an HDR display may have downsides associated with the extended dynamic range. For example, a viewer's visual system may become strained during abrupt transitions from dark frames of content to much brighter frames of content. This can lead to viewing discomfort.BRIEF SUMMARY OF THE DISCLOSURE

In accordance with one embodiment, a computer-implemented method, comprises analyzing media content and computing one or more adaptation states relative to the media content. The computer-implemented method further comprises correlating the one or more adaptation states to one or more corresponding levels of perceived luminance discomfort experienced by a viewer of the media content. Further still, the computer-implemented method comprises adjusting luminance of the media content to comport with one or more desired luminance-based effects. In one aspect, the analyzing of the media content comprises determining a luminance level associated with a pixel of a frame of the media content. In another aspect, the analyzing of the media content comprises determining a luminance level associated w

Claims

1. A computer-implemented method, comprising: analyzing media content and computing one or more adaptation states relative to the media content; correlating the one or more adaptation states to one or more corresponding levels of perceived luminance discomfort experienced by a viewer of the media content; and adjusting luminance of the media content to comport with one or more desired luminance-based effects. 12. A system, comprising: one or more processors; a memory having computer code being executed to cause the one or more processors to: analyze one or more pixels of a frame of media content; compute one or more adaptation states relative to each of the one or more pixels; and translate the one or more adaptation states to one or more estimates of perceived luminance discomfort when the one or more adaptation states is indicative of maladaptation of a visual system viewing the media content.