Human Factors Aspects of Low Light Level Television and Forward Looking Infrared Sensor Displays. I. A Feasibility Study of Scaled Subjective Complexity of Still Scenes Applied to Computer Image Generation.
Final rept. Feb 77-Jan 78,
FLORIDA INTERNATIONAL UNIV MIAMI SCHOOL OF TECHNOLOGY
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Initial research was conducted to investigate human responses to still E-O sensor displays so effects of simulated realism could be evaluated. Research objectives included identifying scenes at different levels of scene-complexity and relating major perceptual with physical factors amenable to computer image generation. Nine subjects psychometrically scaled for scene-complexity photographic sets of Low Light Level Television L3TV and Forward Looking Infrared FLIR displays of 16 target-areas. After debriefing, subjects matched sensor displays with color photographs. Analysis included tests for significant complexity differences, correlation between scales, and content analyses. Results included synthesized physical measures to quantify sensor displays and contrasting subject responses. Scaling FLIR scenes was reported a different and more difficult task than scaling L3TV displays, however, matching FLIR displays with color photographs was faster with fewer errors, implying FLIR perceptual cues comparable with the graphic detail displayed by L3TV. Findings support a CIG simulation using an optical array of surfaces, edges, and lines with trade-off parameters in the design of a Sensor Simulator determined empirically. Additional evidence indicated that visual parameters of FLIR displays may be more modified by mission assignment and atmospheric variables. Author
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