Detection of abandoned and removed objects in a video stream
US8107678B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2008 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Dec 1, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30112
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for processing a time-ordered sequence of video frames. The method is implemented by execution of program code on a processor of a computer system. Each frame includes a two-dimensional array of pixels and a frame-dependent color intensity at each pixel. A current frame and at least one frame occurring prior to the current frame in the sequence are analyzed via a background subtraction on the at least one frame to determine a background image and a static region mask associated with a static region. The background subtraction determines an existence of a static object relating to the static region. A status of the static object is determined, the status being either that the static object is an abandoned object or that the static object is a removed object. The determined status is stored in a data storage medium of the computer system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.