Display apparatus and image pickup apparatus
US8797275B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2009 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Feb 6, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0421
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An HPF eliminates an image of an object which is not to be detected from a captured image, thereby obtaining an HPF image. A binarizing unit performs a binarizing process on the HPF image, thereby generating a binary image. A peak detector extracts, using the binary image as a mask, an image of a region corresponding to an opening of the mask from the captured image. From the image, a peak value and the position of a peak pixel are detected. A determining unit determines whether an object to be detected is in contact with the display surface or not on the basis of the relation between the difference and the threshold. Using the detection result and the determination result in the determining unit, a position deriving unit derives the position on the display surface, of the object to be detected which is in contact with the display surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.