Video quality on AMLCD versus shadow-mask CRT

William P. Olson; Nikhil Balram

doi:10.1117/12.240998

30 May 1996 Video quality on AMLCD versus shadow-mask CRT

William P. Olson, Nikhil Balram

Proceedings Volume 2734, Cockpit Displays III; (1996) https://doi.org/10.1117/12.240998
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

The paper analyzes the image quality of video presented on the new AMLCD F/A-18 E/F multipurpose color display (MPCD) and compares it to the shadow-mask CRT based F/A-18 C/D MPCD. We focus on the contrast ratio advantages held by the AMLCD over the CRT and the resulting superior presentation of color map video and monochrome sensor video. We present modulation transfer functions (MTFs) for the E/F AMLCD and the C/D shadow-mask CRT, and combine these with the contrast threshold function (CTF) of the human visual system, to compute an objective image quality metric, the MTFA, that has been found to correlate well with performance in military detection and recognition tasks. The phase/space varying nature of the LCD requires the use of a multi-valued modulation transfer function (MMTF) in contrast to the single valued MTFs traditionally derived for phase/space invariant systems. The significant difference between the MTFAs for the E/F MPCD and the C/D MPCD highlight the superior image quality produced by the AMLCD. This superior image quality translates into better detection and recognition of target details from sensor video. Two additional metrics, the limiting resolution, and the SQRI, are also computed and used to confirm the overall conclusions.

Citation Download Citation

William P. Olson and Nikhil Balram "Video quality on AMLCD versus shadow-mask CRT", Proc. SPIE 2734, Cockpit Displays III, (30 May 1996); https://doi.org/10.1117/12.240998

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