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Journal of Electronic Imaging

Automatic vergence and focus control of a microstereoscopic camera
Author(s): Soon-Yong Park; Jaekyoung Moon; Namho Lee
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Paper Abstract

This work introduces a microstereoscopic camera that employs two microvideo sensors and a micromotion stage for automatic vergence and focus control. The parallel-axis stereo configuration using two video sensors enables the stereo camera to converge and focus simultaneously on a real object. To calibrate both vergence and focus with respect to object distance, we derive a nonlinear equation relating image disparity to object distance. Distance measurement using the equation yields very accurate results at near distances. To verify focus control, image focus of different object distances with and without automatic focusing is measured and compared. 3-D reconstruction results of real objects are also presented.

Paper Details

Date Published: 1 April 2009
PDF: 9 pages
J. Electron. Imag. 18(2) 023006 doi: 10.1117/1.3126384
Published in: Journal of Electronic Imaging Volume 18, Issue 2
Show Author Affiliations
Soon-Yong Park, Kyungpook National Univ. (Korea, Republic of)
Jaekyoung Moon, Kyungpook National Univ. (Korea, Republic of)
Namho Lee, Korea Atomic Energy Research Institute (Korea, Republic of)

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