Systems and methods for reduced image flicker
US9591230B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2009 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | Jan 12, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/745
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for reducing or substantially eliminating image flicker are provided. The method includes capturing a frame from a video data stream from a monitored region at a frame capture rate wherein the monitored region is illuminated by a lighting system with a predetermined cycle variation, determining a minimum common multiple of the frame capture rate and the cycle variation, determining a number of frames captured within the determined minimum common multiple of the frame capture rate and the cycle variation, and measuring accumulation at a multiple of the determined number of frames. Measuring the accumulation at a multiple of the determined number of frames substantially eliminates image flicker in the video data stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.