Potential Performance Costs Associated with Large-Format Tiled Displays for Surgical Visualization

Abstract

Twenty-five participants performed a surgical training task on a large format display created from one projector or by tiling the images from a 4-, or 9-projector array. Utilizing a large-format display consisting of tiled projector images brings the potential benefits of increased display size with the potential threats to performance of inherent visual artifacts. The effect of these artifacts on performance and subjective workload was assessed. Results indicate that while display size did not affect performance on the surgical task, differences in mental workload were observed. Although a global measure of workload indicated that the tiled displays were the least demanding to use, participants reported deploying additional but highly specific cognitive resources when using these same displays. Their resource shifts seemed to involve adjustments to the perceived control gains created by enhanced size and also degraded ability to compare target sizes in the larger display, possibly due to the obscuring effect of tile edges.

Get full access to this article

View all access options for this article.

References

Boles

D. B.

Bursk

J. H.

Phillips

J. B.

Perdelwitz

J. R.

(2007). Predicting dual-task performance with the Multiple Resources Questionnaire. Human Factors, 49, 32–45.

Brown

Majumder

Yang

(2005). Camera-Based Calibration Techniques for Seamless Multiprojector Displays. IEEE Transactions on Visualization and Computer Graphics 11, 2 (Mar. 2005), 193–206.

Stelzer

E. M.

Wickens

C. D.

(2006). Pilots Strategically Compensate for Display Enlargements in Surveillance and Flight Control Tasks. Human Factors: The Journal of the Human Factors and Ergonomics Society, Vol. 48, No. 1, 166–181.

Hart

S.G.

Staveland

L.E.

(1988). Development of the NASA-TLX (Task Load Index): Results of empirical and theoretical research. In Hancock

P.A.

Meshkati

(Eds.), Human mental workload (pp. 139–183). Amsterdam: North Holland Press.

Helton

W.S.

Fields

Thoreson

J.A.

(2007). Assessing daily stress with the short stress state questionnaire (SSSQ): Relationships with cognitive slips-failures. Proceedings of the Human Factors and Ergonomics Society, 51, 886–890.

Lio

C.H.

Carswell

C. M.

Han

Park

Strup

Seales

W.B.

Clarke

Lee

Hoskins

(2009). Using Formal Qualitative Methods to Guide Early Development of an Augmented Reality Display System for Surgery. Proceedings of the Human Factors and Ergonomics Society 53rd Annual Meeting. Santa Monica, CA: The Human Factors and Ergonomics Society.

Raskar

Brown

M. S.

Yang

Chen

Welch

Towles

Seales

Fuchs

1999. Multi-projector displays using camera-based registration. In Proceedings of the Conference on Visualization ′99: Celebrating Ten Years(San Francisco, California, United States). IEEE Visualization. IEEE Computer Society Press, Los Alamitos, CA, 161–168.

Yang

Gotz

Hensley

Towles

Brown

M. S.

2001. PixelFlex: a reconfigurable multi-projector display system. In Proceedings of the Conference on Visualization ′01 (San Diego, California, October 21–26, 2001). VISUALIZATION. IEEE Computer Society, Washington, DC, 167–174.