Method for detection and recognition of fog presence within an aircraft compartment using video images
US7505604B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2003 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Jan 27, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/52
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Detecting video phenomena, such as fire in an aircraft cargo bay, includes receiving a plurality of video images from a plurality of sources, compensating the images to provide enhanced images, extracting features from the enhanced images, and combining the features from the plurality of sources to detect the video phenomena. Extracting features may include determining an energy indicator for each of a subset of the plurality of frames. Detecting video phenomena may also include comparing energy indicators for each of the subset of the plurality of frames to a reference frame. The reference frame corresponds to a video frame taken when no fire is present, video frame immediately preceding each of the subset of the plurality of frames, or a video frame immediately preceding a frame that is immediately preceding each of the subset of the plurality of frames. Image-based and non-image based techniques are described herein in connection with fire detection and/or verification and other applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.