Effects of Visual Complexity Levels and Information Decluttering Methods for Cockpit Displays on Human Search Performance

Abstract

Clutter problem of modern cockpit displays can occur frequently due to a large amount of information. So, decluttering less important information is required to minimize search time to find target information and prevent human error in interpreting display information. This study is to compare human search performance by visual complexity levels and decluttering methods of cockpit displays. Visual complexity of cockpit displays was designed to be three levels (High, medium, and low) by combining four design variables (number of stimuli, number of colors, number of icons, and variance of divisions) affecting visual complexity. A threat scoring equation was developed to determine what information to be decluttered and four decluttering methods (removal, dimming, dotting, and small sizing) were used to figure out how to declutter the information effectively. Human search performance was measured through search time of visual search task in terms of speed and number of hits of signal detection task in terms of accuracy. The main effect of visual complexity levels and the interaction effect were not significant in both search time and number of hits. Meanwhile, the main effect of decluttering methods was significant in search time. Especially, dotting was the most effective decluttering method in terms of speed and accuracy of human perception performance. The results of this study can be applied to information processing of cockpit displays and then contribute to improve pilot situation awareness.

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References

Boeing Company (2015). Nonnuclear weapon delivery manual. Technical Order No. BTO KS1F-15K-34-1-1, Chicago, Illinois, United States.

Durlach

P. J.

(2004). Change blindness and its implications for complex monitoring and control systems design and operator training. Human- Computer Interaction, 19, 423-451.

Johnson

W. W.

Liao

Granada

(2002). Effects of symbol brightness cueing on attention during a visual search of a cockpit display of traffic information. Proceedings of the Human Factors and Ergonomics society 46th Annual Meeting (pp. 1599-1603), Human Factors and Ergonomics Society, Santa Monica, California, United States.

Kaber

D. B.

Alexander

A. L.

Stelzer

E. M.

Kim

S. H.

Kaufmann

Hsiang

(2008). Perceived clutter in advanced cockpit displays: measurement and modeling with experienced pilots. Aviation, Space, and Environmental Medicine, 79(11), 1007-1018.

Lee

S. C.

Hwangbo

Y. G.

(2016). Perceived visual complexity of in-vehicle information display and its effects on glance behavior and preferences. International Journal of Human-Computer Interaction, 32(8), 654-664.

Lockheed Martin Corporation (2016). Avionics and nonnuclear weapons delivery flight manual. Technical Order No. TO KS1F-16C-34-1-1, Bethesda, Maryland, United States.

Nugent

W. A.

(1996). Comparison of Variable Coded Symbology to a Conventional Tactical Situation Display Method. Proceedings of the Human Factors and Ergonomics society 40th Annual Meeting (pp. 1174-1178), Human Factors and Ergonomics Society, Santa Monica, California, United States.

Parrish

R. V.

Williams

S. P.

Nold

D. E.

(1994). Effective declutter of complex flight displays using stereoptic 3-D cueing. National Aeronautics and Space Administration Technical Report No. 3426, Langley Research Center, Hampton, Virginia, United States.

Rosenholtz

Nakano

(2007). Measuring visual clutter. Journal of Vision, 7(2), 1-22.

10.

Saaty

T. L.

(2008). Decision making with the analytic hierarchy process. International Journal of Services Sciences, 1(1), 83-98.

11.

Schultz

E. E.

Nichols

D. A.

Curran

P. S.

(1985). Decluttering methods for high density computer-generated graphic displays. Proceedings of the Human Factors and Ergonomics society 29th Annual Meeting (pp. 300-303), Human Factors and Ergonomics Society, Santa Monica, California, United States.

12.

John

St. Manes

D. I.

Smallman

H. S.

Feher

Morrison

J. G.

(2004). An intelligent threat assessment tool for decluttering naval air defense displays. United States Navy Technical Report No. 1915, Space and Naval Warfare Systems Center Pacific, San Diego, California, United States.

13.

John

St. Smallman

H. S.

Manes

D. I.

Feher

Morrison

J. G.

(2005). Heuristic automation for decluttering tactical displays. Human Factors, 47(3), 509-525.

14.

Xing

(2005). Complexity and automation displays of air traffic control: literature review and analysis. Federal Aviation Administration Technical Report No. DOT/FAA/AM-05/4, Civil Aerospace Medical Institute, Oklahoma city, Oklahoma, United States.

15.

Xing

(2007). Information complexity in air traffic control displays. Federal Aviation Administration Technical Report No. DOT/FAA/AM-07/26, Civil Aerospace Medical Institute, Oklahoma city, Oklahoma, United States.

16.

Yoon

S. H.

Lim

J. H.

Y. G.

(2015a). Assessment model for perceived visual complexity of automotive instrument cluster. Applied Ergonomics, 46, 76-83.

17.

Yoon

S. H.

Lim

J. H.

Y. G.

(2015b). Perceived visual complexity and visual search performance of automative instrument cluster: a quantitative measurement study. International Journal of Human-Computer Interaction, 31, 890-900.