Adjusted filters
US7203337B2 · kind B2 · utility
4Cited by
8References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 18, 2002 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Apr 16, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method in image processing for detection of a change in the scene in an area. The method comprises the steps of recording a digital image of the area using a sensor and transforming the recorded image by an operator. The operator is based on a previous modeling of changes in the lighting in the area and on a modeling of how the sensor depicts the area in grayscale values in the recorded image. The method further comprises the step of comparing the transformed image with a reference image of the area in order to detect a difference that indicates a change in the scene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.