Simulation of sampling effects in FPAs

Thomas H. Cook; Charles S. Hall; Frederick G. Smith; Timothy J. Rogne

doi:10.1117/12.45804

1 September 1991 Simulation of sampling effects in FPAs

Thomas H. Cook, Charles S. Hall, Frederick G. Smith, Timothy J. Rogne

Proceedings Volume 1488, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing II; (1991) https://doi.org/10.1117/12.45804
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

The use of multiplexers and large focal plane arrays in advanced thermal imaging systems has drawn renewed attention to sampling and aliasing issues in imaging applications. As evidenced by discussions in a recent workshop, there is no clear consensus among experts whether aliasing in sensor designs can be readily tolerated, or must be avoided at all cost. Further, there is no straightforward, analytical method that can answer the question, particularly when considering image interpreters as different as humans and autonomous target recognizers (ATR). However, the means exist for investigating sampling and aliasing issues through computer simulation. The U.S. Army Tank-Automotive Command (TACOM) Thermal Image Model (TTIM) provides realistic sensor imagery that can be evaluated by both human observers and TRs. This paper briefly describes the history and current status of TTIM, explains the simulation of FPA sampling effects, presents validation results of the FPA sensor model, and demonstrates the utility of TTIM for investigating sampling effects in imagery.

Citation Download Citation

Thomas H. Cook, Charles S. Hall, Frederick G. Smith, and Timothy J. Rogne "Simulation of sampling effects in FPAs", Proc. SPIE 1488, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing II, (1 September 1991); https://doi.org/10.1117/12.45804

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