Camera tampering detection
US8073261B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2007 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Sep 6, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/046
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and a module for identifying possible tampering of a camera view. The method comprising receiving an image for analysis from an image sequence, converting the received image into an edge image, generating a similarity value indicating a level of similarity between said edge image and a reference edge image, indicating possible tampering of the camera view if the similarity value is within a specified tampering range, and updating the reference edge image by combining a recently analyzed edge image with the reference edge image in case of each one of a predetermined number of consecutively analyzed images does not result in an indication of possible tampering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.