Robust and efficient foreground analysis for real-time video surveillance
US7620266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2005 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Oct 3, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/52
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for foreground analysis in real-time video include background subtraction and foreground detection, shadow removal, quick lighting change adaptation, static foreground region detection, foreground fragment reduction, and frame level change detection. Processes include background image extraction and foreground detection, integrating texture information of the background image and a current frame to remove false positive foreground areas resulting from lighting changes, integrating pixel intensity information by determining a cross-correlation of intensities between a current frame and the background image for each pixel in a foreground mask to remove image shadows. Static foreground region detection and fragment reduction are also included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.