Vicki L Paul

US Patent:

7122788, Oct 17, 2006

Filed:

Oct 8, 2004

Appl. No.:

10/961975

Inventors:

Robert A. Owen - Rowlett TX, US
Vicki D. Paul - McKinney TX, US
Humphrey W. Ha - Plano TX, US
Roger C. Knott - Plano TX, US
Mark A. Gohlke - Plano TX, US
Charles M. Hanson - Richardson TX, US

Assignee:

L-3 Communications Corporation - New York NY

International Classification:

G01D 18/00

US Classification:

2502521

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.