Method and apparatus for detecting an approaching object within a monitoring zone
US5798787A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Aug 8, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/188
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system for detecting the approaching of a target object into a monitoring zone wherein the target object is scheduled to enter the zone is provided. The method includes providing motion image data continuously taken as an image from the monitoring zone, initially setting a plurality of monitoring areas in an image plane of the monitoring zone on a track along which the target object moves, extracting the image data of these monitoring areas from the motion image data, detecting an image variation of the respective monitoring areas through the processing of the image data of the monitoring areas for each monitoring area and deciding, based on the detection sequence of the monitoring areas corresponding to a detected image variation, whether of not the target object approaches into the monitoring zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.