Apparatus for automatically ignoring cast self shadows to increase the effectiveness of video analytics based surveillance systems
US8665329B2 · kind B2 · utility
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8References
7Claims
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Inventors
Key dates
| Filing date | Jun 11, 2010 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Oct 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
One of the challenges in video surveillance system is the detection of unwanted intruders in secure zones. These zones may be in large facilities such as airports, train stations, port facilities or warehouses. Because many of these locations are outdoors, the presence of shadows is detected on images. In order to effectively eliminate these shadows which will therefore result in a usable figure, these shadows must be eliminated. This is accomplished by forming a contour box around the image and then reducing the shadows based on preset parameters in the software.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.