Accession Number : ADA621423


Title :   Static Scene Statistical Non-Uniformity Correction


Descriptive Note : Master's thesis


Corporate Author : AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT


Personal Author(s) : Catarius, Adrian M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a621423.pdf


Report Date : Mar 2015


Pagination or Media Count : 61


Abstract : Non-Uniformity Correction (NUC) is required to normalize imaging detector Focal-Plane Array (FPA) outputs due to differences in the end-to-end photoelectric responses between pixels. Currently, multi-point NUC methods require static, uniform target scenes of a known intensity for calibration. Conversely, scene-based NUC methods do not require a priori knowledge of the target but the target scene must be dynamic. The new Static Scene Statistical Non-Uniformity Correction (S3NUC) algorithm was developed to address an application gap left by current NUC methods. S3NUC requires the use of two data sets of a static scene at different mean intensities but does not require a priori knowledge of the target. The S3NUC algorithm exploits the random noise in output data utilizing higher order statistical moments to extract and correct fixed pattern, systematic errors. The algorithm was tested in simulation and with measured data and the results indicate that the S3NUC algorithm is an accurate method of applying NUC. The algorithm was also able to track global array response changes over time in simulated and measured data. The results show that the variation tracking algorithm can be used to predict global changes in systems with known variation issues.


Descriptors :   *FOCAL PLANE ARRAYS , *PHOTOELECTRICITY , ACCURACY , ALGORITHMS , ARRAYS , CORRECTIONS , DATA BASES , DETECTORS , ERRORS , GLOBAL , IMAGES , INTENSITY , MEAN , MOMENTS , PATTERNS , RESPONSE , SIMULATION , STATICS , STATISTICS , TARGETS , THESES , TRACKING , VARIATIONS


Subject Categories : Electrooptical and Optoelectronic Devices
      Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE