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Proceedings Paper

Effects of perspective distortion in stereoscopic video displays
Author(s): Curtis S. Ikehara; Robert E. Cole; John O. Merritt
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Paper Abstract

In teleoperation, non-orthoscopic views are often obtained by changing camera distance, lens focal length and intercamera separation to settings that deviate from those required to produce orthoscopic views. Distortions caused by this distant perspective can have an impact on the perceptions and the performance of tasks in the work space. This study uses the rapid sequential positioning task (RSP) to investigate differences in performance using stereoscopic and monoscopic remote views that are either orthoscopic in terms of camera/lens configuration or are obtained from cameras located at four times their orthoscopic position. At this distant perspective orthoscopic image size is maintained by adjusting lens focal length while comparable disparities are maintained by adjusting the intercamera separation. Although in the distant perspective (or non- orthoscopic) objects on the horopter plane are the same size as in the orthoscopic view, object ahead or behind the horopter plane are not. Time scores were recorded from four subjects performing the RSP task under four viewing conditions: monoscopic/orthoscopic, monoscopic/non-orthoscopic, stereoscopic/orthoscopic, stereo/non-orthoscopic. A two by two ANOVA statistical analysis was performed on the data. Results of this study did not reveal a degradation in performance when moving away from the orthoscopic view to the distant perspective for both monoscopic and stereoscopic view, although stereo was significantly superior.

Paper Details

Date Published: 23 September 1993
PDF: 9 pages
Proc. SPIE 1915, Stereoscopic Displays and Applications IV, (23 September 1993); doi: 10.1117/12.157042
Show Author Affiliations
Curtis S. Ikehara, Univ. of Hawaii/Manoa (United States)
Robert E. Cole, Univ. of Hawaii/Manoa (United States)
John O. Merritt, Interactive Technologies (United States)

Published in SPIE Proceedings Vol. 1915:
Stereoscopic Displays and Applications IV
John O. Merritt; Scott S. Fisher, Editor(s)

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