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David C. Hubbard

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Publications by David C. Hubbard (bibliography)

1988

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Kleiss, James A., Curry, David G. and Hubbard, David C. (1988): Effect of Three-Dimensional Object Type and Density in Simulated Low-Level Flight. In: Proceedings of the Human Factors Society 32nd Annual Meeting 1988. pp. 1299-1303.

“Three-dimensional objects placed on simulated terrain surfaces are particularly effective as cues for altitude in simulated low-level flight. To conserve the limited edge processing capacity of computer image generators (CIGs), objects have typically been simple in shape and therefore fairly abstract in appearance. The present investigation sought to determine whether the apparent size of more detailed and familiar appearing objects (e.g., trees and bushes) serves as an additional cue for altitude in simulated low-level flight. Results showed no differences in performance between abstract objects and familiar objects. However, performance did improve with increases in object density, at least for some performance measures. These results suggest that CIG processing capacity may be most effectively utilized by increasing object density rather than individual object detail.”

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