Image processing apparatus
US7142694B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2002 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Oct 11, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/74
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image processor includes an imaging unit that captures an image of a target area, a face region extraction unit that extracts a face region, which corresponds to a face of a person, from the image captured by the imaging unit, a distance estimation unit that estimates a distance from the imaging unit to each position of the image captured by the imaging unit, a distance distribution calculation unit that sets up a distance estimation area below the face region by a predetermined distance and calculates distance distribution from the imaging unit in the distance estimation area, using the distance estimated by the distance estimation unit, and a wheelchair presence determination unit that determines whether a person corresponding to the face region extracted is sitting in a wheelchair, by comparing the distance from the imaging unit of the face region estimated by the distance estimation unit with the distance distribution in the distance estimation area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.