NDLI: One Method of Plane Direction Measurement by Using of the Grating Fringe

Content Provider	IEEE Xplore Digital Library
Author	Jie Sun Zhiling Zhang
Copyright Year	2008
Description	Author affiliation: Sch. of Electron. Informations & Commun. Eng., Tianjin Univ. of Technol., Tianjin (Jie Sun; Zhiling Zhang)
Abstract	The mapping between the three-dimension (3D) physical space parameters of the target to the two-dimension (2D) image captured by the camera system is very important in the machine vision, especially in the omni-directional vision system for mobile robots. In practice, the 2D image captured by camera includes only part of the information of the 3D target and the 2D image changes a lot along with many factors. The 2D image captured depends not only on the optical parameters of the camera system, but also on the position of the physical target location and the relative direction of the physical target. One model is described under the investment of the geometric relationship between the camera and the target in this paper. The structure light to determine the target surface normal line direction and this light used in this model is produced by an optical grating. A line CCD camera is used to measure the light intensity of the structure light and the data of the light intensity distribution is transformed into a computer with an adapter card through ISA bus interface. The quadratic fitting equation is used to smooth the measured light intensity data distribution and to determine the local maximum value of the intensity. The precision of this measurement method is higher than $10^{-2}.$ This plane direction measurement method can be used in robots vision and many other cases such as the inspection, measurement and examination of 3D profile in research, industry, security and so on.
Starting Page	91
Ending Page	95
File Size	292402
Page Count	5
File Format	PDF
ISBN	9780769533056
DOI	10.1109/FSKD.2008.514
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Charge coupled devices Solid modeling Quadratic fitting Robot vision systems Geometrical optics Mobile robots Plane direction measurement Optical measurement Robots vision Machine vision Investments Cameras Gratings Charge-coupled image sensors
Content Type	Text
Resource Type	Article

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