Following research reported by the authors to SID in 2017 and SPIE in 2018, this paper presents an expanded set of research results for psychophysical research conducted to determine of 255 Just Noticeable Color Differences (JNCDs). Given transmissive displays shall continue to create their color palette via color sub-pixel gray levels; given the number of such gray levels shall continue to be 255 (plus black) for most avionic, vetronic and shipboard applications, the authors propose to identify a set of gamma values unique to a transmissive display’s three color channels and which conform to the intensity difference thresholds of the tritanoptic visual system. Method of research, to include procedure, equipment, stimuli and test subjects shall be identified. Results shall include raw data regarding psychophysically determined intensity difference thresholds and a range of gammas for the red, green, and blue color channels of an hypothetic, JND adapted, 256 gray level transmissive display.

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Daniel D. Desjardins, Patrick Gardner, and James C. Byrd, "Psychophysical test results in the determination of an appropriate gamma for transmissive color displays," Proc. SPIE 11019, Situation Awareness in Degraded Environments 2019, 110190K (Presented at SPIE Defense + Commercial Sensing: April 17, 2019; Published: 20 May 2019); https://doi.org/10.1117/12.2522195.