Method and system for video overlay on film detection on progressive video input
US8248527B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 2009 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Sep 11, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video processor receives an interlaced video comprising source video content and video overlay content. A progressive video of the received interlaced video is used for video overlay detection. The received interlaced video is deinterlaced and converted to a high frame-rate progressive video for display. Video overlay detection and frame based cadence detection are performed independently during frame-rate conversion. Candidate cadences are detected for each video frame. Decisions on final cadences for each video frame are made based on the detected candidate cadences and the detected video overlay content. A frame-rate upconversion is performed according to the final cadence detection decisions. Video frame differences between each video frame and associated adjacent video frames are generated for video overlay detection. Pixel values per line are integrated for each generated video frame difference. An overlay detection vector is formed for each video frame via an element-wise min-operation and refined temporally and/or spatially.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.