Ungleichförmigkeitsausgleich mit grossem Dynamikbereich für infrarote Bildebenematrizen

A method and apparatus for non-uniformity compensation for infrared focal plane arrays in an infrared imaging device (10) including a calibration operation and a correction operation. The calibration operation measures the response (24) generated by the detector elements (14) in the focal plane arra...

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Bibliographic Details
Main Authors LINDGREN, GARY M., AGOURA, CALIFORNIA 91301, US, SPAGNOLIA, JOSEPH A., CANOGA PARK, CALIFORNIA 91303, US, KAY, ANTHONY J., MOORPARK, CALIFORNIA 93021, US
Format Patent
LanguageGerman
Published 17.06.1999
Edition6
Subjects
COLORIMETRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
RADIATION PYROMETRY
TESTING
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Summary:A method and apparatus for non-uniformity compensation for infrared focal plane arrays in an infrared imaging device (10) including a calibration operation and a correction operation. The calibration operation measures the response (24) generated by the detector elements (14) in the focal plane array (16) to a wide range of known signal flux levels of infrared radiation (22) produced by a uniform black body under controlled conditions. The responses (24) are then stored as a digital video signal (27) in a look-up table memory (38). The correction operation achieves the near real-time compensation of a second response of the detector element (14) to the signal flux level of infrared radiation (22) produced by objects in the field of view surveyed by the imaging device (10) by comparing the second response to the stored digital video signals (27) and interpolates the second response to a corrected digital video output signal (31).
Bibliography:Application Number: DE19936023531T