Techniques for correcting fixed pattern noise in shutterless FIR cameras
US10511793B2 · kind B2 · utility
1Cited by
17References
23Claims
0Family size
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Key dates
| Filing date | Jun 28, 2018 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Jun 28, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/76
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for correcting fixed pattern noise in far-infrared (FIR) images captured by a shutterless FIR camera. The method includes: determining a drift coefficient based on previously determined calibration values and high pass filter values applied to an input FIR image captured by the shutterless FIR camera; smoothing the drift coefficient based, in part, on previously computed drift coefficient values; and removing noise from the input image based on the smoothed drift coefficient value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.