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Three-dimensional sensing methodology combining stereo vision and phase-measuring profilometry based on dynamic programming

Title
Three-dimensional sensing methodology combining stereo vision and phase-measuring profilometry based on dynamic programming
Authors
Lee, Hyun KiKim, Min YoungMoon, Jeon Il
DGIST Authors
Lee, Hyun KiMoon, Jeon Il
Issue Date
2017-12
Citation
Optical Engineering, 56(12)
Type
Article
Article Type
Article
Author Keywords
stereo visionphase measuring profilometrydynamic programmingoptical metrology
Keywords
FRINGE PROJECTION PROFILOMETRYSHAPE MEASUREMENT3-D MEASUREMENTPATTERNSCAMERA
ISSN
0091-3286
Abstract
Phase measuring profilometry and moiré methodology have been widely applied to the three-dimensional shape measurement of target objects, because of their high measuring speed and accuracy. However, these methods suffer from inherent limitations called a correspondence problem, or 2π-ambiguity problem. Although a kind of sensing method to combine well-known stereo vision and phase measuring profilometry (PMP) technique simultaneously has been developed to overcome this problem, it still requires definite improvement for sensing speed and measurement accuracy. We propose a dynamic programming-based stereo PMP method to acquire more reliable depth information and in a relatively small time period. The proposed method efficiently fuses information from two stereo sensors in terms of phase and intensity simultaneously based on a newly defined cost function of dynamic programming. In addition, the important parameters are analyzed at the view point of the 2π-ambiguity problem and measurement accuracy. To analyze the influence of important hardware and software parameters related to the measurement performance and to verify its efficiency, accuracy, and sensing speed, a series of experimental tests were performed with various objects and sensor configurations. © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).
URI
http://hdl.handle.net/20.500.11750/5776
DOI
10.1117/1.OE.56.12.124107
Publisher
SPIE
Related Researcher
  • Author Lee, HyunKi Camera Culture Group
  • Research Interests Machine Vision, Intelligent Robot, Design of Optical Systems
Files:
There are no files associated with this item.
Collection:
Division of Intelligent RoboticsCamera Culture Group1. Journal Articles
Division of Intelligent Robotics1. Journal Articles


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