Smoke detection system and method using a camera
US10304306B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2016 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Dec 9, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/183
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Image-based fire detection methods are provided which include analyzing a field of view based on a plurality of images, determining if changes occur, and analyzing whether any such changes are due to smoke-like material. Changes due to large objects are ruled out, and drift in the scene or shaking of the image collection device is accounted for by the method. The methods employ representing images of the field of view with quantifiable values and comparing to thresholds established for each event, and activating an alarm if changes due to smoke-like material are detected. The fire detection methods may also include monitoring a field of view for changes, and only performing the analysis on the images if changes are detected. The monitoring and validating stages of the methods include collecting images at different sampling rates for different amounts of information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.