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Impacts and Mitigation Strategies of Sun Exposure on Uncooled Microbolometer Image Sensors

Presented by Pelco, this paper provides results from testing and analysis of sun exposure and how they affect video signal.

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This paper provides results from testing and analysis of sun exposure effects on amorphous silicon (á-Si) microbolometers and vanadium oxide (VOX)  microbolometers and cameras. Gain and offset changes on the video signal for each detector material type due to sun exposure is provided.

Results from different sun exposure levels corresponding to different geo­ graphic locations and time of year are presented. Data associated with increasing exposure duration and number of exposures is also presented. The time constants associated with the decay of the sun exposure effects are also provided. Processes and algorithms that mitigate the impact on image quality are presented and their effectiveness measured.

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