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Optical Engineering

Calibration, parameter estimation, and accuracy enhancement of a 4DI camera turntable system
Author(s): Xiang Sean Zhou; Ruihua Yin; Wenjian Wang; Xiaogu Wu; William G. Wee
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Paper Abstract

The four-dimensional imager (4DI) system, a real-time threedimensional (3-D) imager, is a laser range data sensing system for making continuous geometric measurements of 3-D surfaces. We concentrate on the objective of improving the resolution and accuracy of this system using a camera-turntable arrangement. A fast and inexpensive method to capture dense range data for 360-deg viewing of an object is provided. After the system calibration procedure and parameter estimation operations, the method to improve the data resolution by object rotation is derived. By oversampling the object surface and then using a 3-D smoothing and resampling operation, the accuracy of the data can be improved while maintaining a given spatial resolution. The method of removing the low credibility data points is also discussed.

Paper Details

Date Published: 1 January 2000
PDF: 5 pages
Opt. Eng. 39(1) doi: 10.1117/1.602348
Published in: Optical Engineering Volume 39, Issue 1
Show Author Affiliations
Xiang Sean Zhou, Univ. of Illinois/Urbana-Champaign (United States)
Ruihua Yin, Univ. of Cincinnati (United States)
Wenjian Wang, Univ. of Cincinnati (United States)
Xiaogu Wu, Univ. of Cincinnati (United States)
William G. Wee, Univ. of Cincinnati (United States)

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