Modeling human search and target acquisition performance: 3. target detection in the presence of obscurants

1991 ◽  
Vol 30 (6) ◽  
pp. 824 ◽  
Author(s):  
Stanley R. Rotman
Keyword(s):  
Target Detection ◽  
Target Acquisition ◽  
Acquisition Performance

Accommodation and the Acquisition of Distant Targets by Observers with Superior Vision

1983 ◽  
Vol 27 (3) ◽  
pp. 259-263
Author(s):  
Kirk Moffitt
Keyword(s):  
Target Detection ◽  
Target Acquisition ◽  
Distance Information ◽  
Acquisition Performance ◽  
On Demand ◽  
Series Of Experiments ◽  
Visual Accommodation ◽  
Small Targets ◽  
Dark Focus ◽  
Military Pilots

The visual accommodation ability of young observers with healthy eyeballs has typically been underestimated. A series of experiments and demonstrations was conducted to study how a pilot might use his eyes to optimize target acquisition performance in different visual environments. Observers with uncorrected far acuities of 20/20 or better were selected for participation. Target acquisition tasks were performed while accommodation was simultaneously monitored with an infrared optometer. The target was always small and located at optical infinity. The average dark focus was more distant than is typically reported and tended to shift outwards with experience on the optometer. When observers were provided with distance information, half were apparently able to “look through” near peripheral texture in order to optimize accommodation accuracy and target detection performance. Although most observers were capable of using imagery to shift their accommodation outwards in the dark, this did not predict the ability to “look through” near texture. In a subsequent demonstration, two observers were able to focus and defocus small targets on demand. Implications for military pilots, many of whom have superior vision, are discussed.

Spatial Multisensory Cueing to Support Visual Target-Acquisition Performance

2012 ◽  
Vol 56 (1) ◽  
pp. 1312-1316 ◽  
Author(s):  
Julio C. Mateo ◽  
Brian D. Simpson ◽  
Robert H. Gilkey ◽  
Nandini Iyer ◽  
Douglas S. Brungart
Keyword(s):  
Visual Target ◽  
Target Acquisition ◽  
Acquisition Performance
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