Telop detecting method, telop detecting program, and telop detecting device
US8126055B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 2, 2005 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Apr 14, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A telop detecting device includes an MPEG input source, a parameter acquiring unit, a switch, a DCT coefficient evaluating unit, and a result output unit. The MPEG input source acquires an MPEG stream. The parameter acquiring unit acquires parameters necessary for detecting a telop from the MPEG input source. The switch switches on and off the connection to the DCT coefficient evaluating unit. The DCT coefficient evaluating unit evaluates the possibility of presence of a telop based on a DCT coefficient of each macro block in a frame acquired through the switch, identifies a telop region by calculating an evaluation value by assigning a weight to the DCT coefficient using a weighting matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.