Method and apparatus for counting number of persons
US9978155B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2015 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Mar 10, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30242
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for counting a number of persons in an image are provided. The person counting apparatus includes: a detector configured to detect a movement area in a top-view distance image, of at least one image frame, providing distance information; an estimator configured to estimate a candidate head area from the movement area based on the distance information; and a determiner configured to determine whether the candidate head area is an actual head of a person based on a similarity to a circle of the candidate head area and a spherical curvature of the candidate head area estimated from the distance information about the candidate head area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.