Detection of moving interlaced text for film mode decision
US8023041B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2006 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Jan 31, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for detecting moving interlaced text in a video sequence originating through telecine is disclosed. The method generally includes the steps of (A) checking a motion condition of a current block in a current field in the video sequence for motion both (i) from a previous field in the video sequence to the current field and (ii) from the current field to a next field in the video sequence, (B) checking an artifact condition of the current block for a plurality of symmetric interlaced artifacts in both (i) a forward temporal direction and (ii) a backward temporal direction and (C) asserting a block motion indicator for the current block if all of (i) the motion condition is true and (ii) the artifact condition is true.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.