Spatial performance with perspective displays as a function of computer graphics eyepoint elevation and geometric field of view.

The purpose of this study was to investigate the effect of varying the elevation of the computer graphics eyepoint and the geometric field of view on judgements of spatial information using a stereoscopic perspective display. Twelve subjects judged the elevation and azimuth angle separating two computer-generated objects viewed using an eyepoint elevation that ranged between -15 degrees and 45 degrees and a geometric field of view that ranged between 40 degrees and 80 degrees. The results of the study indicated that judgements of elevation were affected by the compression of the vertical axis resulting from the raised eyepoint elevation. Furthermore, azimuth judgements were influenced by both the eyepoint elevation and the geometric field of view. Implications of the results for the design of displays and for spatial performance using stereoscopic displays are discussed.

[1]  Woodrow Barfield,et al.  Visual Enhancements and Geometric Field of View as Factors in the Design of a Three-Dimensional Perspective Display , 1990 .

[2]  S. Ellis,et al.  Exocentric direction judgements in computer-generated displays and actual scenes , 1989 .

[3]  Woodrow Barfield,et al.  Judgments of Azimuth and Elevation as a Function of Monoscopic and Binocular Depth Cues Using a Perspective Display , 1995, Hum. Factors.

[4]  W. Barfield,et al.  Effect of Geometric Parameters of Perspective on Judgements of Spatial Information , 1991, Perceptual and motor skills.

[5]  L D Silverstein,et al.  Spatial Judgments with Monoscopic and Stereoscopic Presentation of Perspective Displays , 1992, Human factors.

[6]  Woodrow Barfield,et al.  Perceptual Biases in Spatial Judgements as a Function of Eyepoint Elevation Angle and Geometric Field of View , 1994 .

[7]  Paul Milgram,et al.  Enhancement of 3-D Video Displays by Means of Superimposed Stereo-Graphics , 1991 .

[8]  S R Ellis,et al.  The Effect of Perspective Geometry on Judged Direction in Spatial Information Instruments , 1986, Human factors.

[9]  Blake Hannaford,et al.  Quantitative Evaluation of Perspective and Stereoscopic Displays in Three-Axis Manual Tracking Tasks , 1987, IEEE Transactions on Systems, Man, and Cybernetics.

[10]  Woodrow Barfield,et al.  Relationship between monocular and binocular depth cues for judgements of spatial information and spatial instrument design , 1995 .

[11]  Suzanne V. Bemis,et al.  Operator Performance as a Function of Type of Display: Conventional versus Perspective , 1988 .