Adaptively reducing offset in a thermal imaging camera

Details Adaptively reducing offset in a thermal imaging camera Adaptively reducing offset in a thermal imaging camera

2006-10-17

2006-10-17

Porta, David (Department: 2884)

Radiant energy

Calibration or standardization methods

Reexamination Certificate

active

07122788

ABSTRACT:
Collecting samples to adjust a signal includes providing a shutter in an opened position to allow a detector of an infrared camera to detect infrared radiation and generate a signal corresponding to the infrared radiation. A first touchup iteration is initiated by moving the shutter to a closed position, and samples of a reference frame are collected according to a collection instruction. The shutter is then moved to the opened position. If there is a change in a state of the infrared camera, the collection instruction is adjusted in response to the change. A second touchup iteration is initiated by moving the shutter to the closed position, and samples are collected according to the adjusted collection instruction. A modification of the signal is determined in accordance with at least some of the samples.

REFERENCES:
patent: 5532484 (1996-07-01), Sweetser et al.
patent: 5994701 (1999-11-01), Tsuchimoto et al.
patent: 6353223 (2002-03-01), Ookawa
“Thermal-Eye 2500AS”, 2500AS-SEC/F/LE-0904, Raytheon Commercial Infrared, www.raytheoninfrared.com; 3 pages, Jul. 2004.

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