Metadata filtering for display mapping for high dynamic range images
US10056042B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2016 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | May 11, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2370/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods are disclosed for filtering metadata to be used in display management. Given an input video stream and input metadata comprising at least one of minimum, average, or maximum luminance values of the video frames in the video stream, values of a function of the input metadata are filtered using a temporal filter to generate filtered metadata, wherein the filtering is based only on metadata for input frames in the same scene. Methods for temporal filtering based on an exponential moving average filter or a look-ahead sliding window filter are presented, including methods for scene-change detection using the input metadata.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.