Generating synthetic video frames using optical flow
US10127644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2015 |
| Grant date | Nov 13, 2018 |
| Priority date | — |
| Expiry date | Nov 8, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/0135
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A novel video system that detects events in a video sequence that causes such distortions and switch off optical flow based frame interpolation is provided. The system detects sudden changes in light intensity and switch to non-optical flow based frame interpolation when such sudden change is detected. When there is no such drastic change in light intensity, the system reverts back to using optical flow frame interpolation. Specifically, the system detects a flash event by computing a sum of differences in histograms of intensity levels between the pair of consecutive actual video frames. When the sum of differences is above a certain threshold, the video system switch to non-optical flow based frame interpolation. When the sum of differences is below the threshold, the video system reverts back to optical flow frame interpolation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.