DYNAMIC RANGE EXPANSION HIGHLIGHT INFORMATION RESTORATION

Number: 20170316553
Published: 2017-11-02
Filed: 2017-03-16
Assignee: Disney Enterprises, Inc.
Inventors: LUKA; Stefan
CPC: G06T5/50; G06T5/77; G06T5/94; G06T7/0002; G06T7/90
Verdict: Set aside HDR highlight restoration - image/compression processing
Source: Google Patents · FreePatentsOnline

Abstract

Systems and methods are provided for generating high dynamic range (HDR) content using existing standard dynamic range (SDR) content. HDR content is generated by restoring lost detail in the SDR content using source content from which the SDR content was derived. The HDR content generated from the SDR content also preserves anycolor characteristics, such as color grading, of the SDR content in conjunction with the restoration of lost detail.

Background

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure, in accordance with one or more various embodiments, is described in detail with reference to the following figures. The figures are provided for purposes of illustration only and merely depict typical or example embodiments.

FIG. 1A is a flow chart illustrating example operations that can be performed to HDR content in accordance with various embodiments.

FIG. 1B is a flow chart illustrating filtering and comparison operations in accordance with various embodiments.

FIG. 1C is a flow chart illustrating morphology operationsand pixel map generation in accordance with various embodiments.

FIG. 2 is a schematic representation of a content editing system utilized in generating HDR content in accordance with various embodiments.

FIG. 3 illustrates example images representative of HDR content generation in accordance with various embodiments.

FIG. 4 is an example computing component that may be used to implement various features of embodiments of the present disclosure.

The figures are not exhaustive and do not limit the present disclosure to the precise form disclosed.DETAILED DESCRIPTION

Efforts are being undertaken to re-master existing SDR content to HDR content. However, conventional methods of re-mastering SDR content involve “re-grading” source content or material, such as raw media or film scans, and can result in altering intended appearance of the video/visual

Claims

1. A computer-implemented method, comprising: identifying one or more areas of standard dynamic range (SDR) content where detail has been lost; creating an image processing map based on the identified one or more areas; using pixels of the image processing map for local color matching to source content; and substitutingpixels of the SDR content with corresponding pixels identified in the image processing map. 15. A system, comprising: a comparator adapted to receive images representative of source content and standard dynamic range (SDR) content derived from the source content, and identify one or more areas of standard dynamic range (SDR) content where detail has been lost; a morphological operation unit adapted to apply morphological operations to the SDR content and source content creating an image processing map based on the identified one or more areas; a color transformation unit adapted to use pixels of the image processing map for local color matching to the source content; and a pixel merge unit adapted to substitute pixels of the SDR content with corresponding pixels identified in the image processing map.