NDLI: Optimal Spatial Resolution in Catadioptric Sensors for Pipe Inspection Applications

Content Provider	IEEE Xplore Digital Library
Author	Tezerjani, A.D. Mehrandezh, M. Paranjape, R.
Copyright Year	2014
Description	Author affiliation: Inuktun Services, Nanaimo, BC, Canada (Tezerjani, A.D.) \|\| Fac. of Eng. & Appl. Sci., Univ. of Regina, Regina, SK, Canada (Mehrandezh, M.; Paranjape, R.)
Abstract	Spatial resolution in imaging systems used for pipe inspection plays a crucial role. Catadioptric imaging systems, which normally consist of a perspective camera and a hyperbolic mirror provide a cost-effective solution. Also, they would be the imaging system of choice in confined spaces due to their size factor. In this paper we, (1) define the cylindrical spatial resolution for the pipe inspection purposes, (2) formulate the spatial resolution mathematically based on system's parameters such as, the focal length of the perspective camera, and the mirror shape, and (3) provide a guideline on having the optimal configuration yielding the highest spatial resolution. Numerical results are provided which are also supported by experimental results. Experimentation was carried out using a Catadioptric imaging system mounted on a motorized linear track moving inside a PVC pipe. Checkerboard calibration patterns were used through experiments to verify on results.
Starting Page	18
Ending Page	22
File Size	502254
Page Count	5
File Format	PDF
ISBN	9781467367523
DOI	10.1109/ISOT.2014.14
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-11-05
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image-based pipe inspection Catadioptric imaging Opto-mechatronics Inspection Cameras Sensors Mirrors Spatial resolution Optimal spatial resolution
Content Type	Text
Resource Type	Article

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