As our primary means of gathering information from the world about us, vision has always occupied a central place in human factors. Beginning in the early 1980's, the Vision Group at NASA Ames Research Center sought to move visual human factors from its primarily empirical foundations to a new, model based formulation. The intent was to do this through development of computational models of visual performance. These would be more general than ad hoc empirical measurements, would be amenable to refinement over time, and would serve as the basis for computational human factors engineering tools. Since then the Vision Group has made some important contributions to fundamental vision science, and has also begun to fulfill the program envisioned at its outset.
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