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NUC algorithm by calculating the corresponding statistics of the decomposed signal (2010)
| Venue: | International Journal on Computer Science and Technology (IJCST |
| Citations: | 3 - 0 self |
BibTeX
@ARTICLE{Goyal10nucalgorithm,
author = {Parul Goyal},
title = {NUC algorithm by calculating the corresponding statistics of the decomposed signal},
journal = {International Journal on Computer Science and Technology (IJCST},
year = {2010},
pages = {1--2}
}
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Abstract
Infrared focal plane arrays (IRFPA) imaging systems are strongly affected by the spatial non-uniformity of the IRFPA response. The non-uniformity is due to the pixel-to-pixel responsivity (gain) and dark current (offset) variations of the IRFPA. The nonuniformity results in a fixed spatial noise superimposed on the infrared image, which can completely mask the useful thermal signatures in an infrared scene. What makes this problem even more challenging is that spatial non-uniformity drifts temporally as a result of variations in the IRFPA working conditions. Such drift require a real-time compensation for IRFPA’s response in the course of imaging system operation]. Numerous nonuniformity correction (NUC) techniques have been developed. Traditional Reference-based calibration techniques rely on the known blackbody calibration-source. But they can’t suppress drift of IRFPA’s response effectively. Now non-uniformity correction techniques are being focused on some scene-based algorithms. Essentially, scene-based techniques identify the true infrared image from the fixed-pattern noise by exploiting motion-related features in the image. I.
Keyphrases
decomposed signal corresponding statistic nuc algorithm irfpa response spatial non-uniformity scene-based algorithm traditional reference-based calibration technique infrared scene numerous nonuniformity correction real-time compensation system operation true infrared image fixed spatial noise suppress drift fixed-pattern noise infrared image pixel-to-pixel responsivity useful thermal signature infrared focal plane array blackbody calibration-source non-uniformity correction technique motion-related feature scene-based technique nonuniformity result spatial non-uniformity drift
