Enhanced contrast for object detection and characterization by optical imaging using formed difference images
US9495613B2 · kind B2 · utility
30Cited by
116References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 4, 2015 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Dec 4, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Enhanced contrast between an object of interest and background surfaces visible in an image is provided using controlled lighting directed at the object. Exploiting the falloff of light intensity with distance, a light source (or multiple light sources), such as an infrared light source, can be positioned near one or more cameras to shine light onto the object while the camera(s) capture images. The captured images can be analyzed to distinguish object pixels from background pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.