Update region detection device
US8331696B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 2009 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Feb 5, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/507
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
To provide an update region detection device capable of accurately detecting an update region from plot data on a computer screen. In an update region detection unit (125), a pixel comparison unit (601) compares a difference between values of pixels at the same position in each of a reference frame and a current frame, with a first threshold and a second threshold, the second threshold being a value greater than the first threshold. An update region extraction unit (602) extracts, an update region, a group including a pixel where a difference greater than the second threshold has been detected, from among a group of pixels where a difference greater than the first threshold has been detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.