Information transfer between unmatched sensors and sampled displays

William P. Olson; Nikhil Balram

doi:10.1117/12.277019

1 July 1997 Information transfer between unmatched sensors and sampled displays

William P. Olson, Nikhil Balram

Proceedings Volume 3057, Cockpit Displays IV: Flat Panel Displays for Defense Applications; (1997) https://doi.org/10.1117/12.277019
Event: AeroSense '97, 1997, Orlando, FL, United States

Abstract

This paper studies the transfer of information in pixelated display systems when there is a resolution mismatch between the input sensor video and the sampled displays, with the display having lower resolution than the input video. This scenario is increasingly likely to occur in military aircraft where the design and upgrade cycles of the sensors do not necessarily track the corresponding cycles for the displays. The major question discussed here is whether information that is critical to the successful operation of the aircraft can be preserved. In past work, the authors have derived the modulation transfer function for sampled- data displays and applied it to study the image quality and resolution of AMLCD cockpit displays. This analysis, like traditional MTF analysis for CRT systems, focused on the sine-wave modulation of the system. Such analysis shows the loss of information in the form of the sinusoidal components between the display and sensor Nyquist limits. In this paper, we show that even in such cases, the information of most interest to military users, namely the presence of single pixel point targets or single-pixel wide line targets, can be significantly preserved with the use of appropriate digital filtering.

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William P. Olson and Nikhil Balram "Information transfer between unmatched sensors and sampled displays", Proc. SPIE 3057, Cockpit Displays IV: Flat Panel Displays for Defense Applications, (1 July 1997); https://doi.org/10.1117/12.277019

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KEYWORDS

Sensors

Modulation

Modulation transfer functions

CRTs

Analog electronics

Image resolution

LCDs

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