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Sensors and Materials
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Sensors and Materials, Volume 31, Number 10(3) (2019)
Copyright(C) MYU K.K.
pp. 3245-3259
S&M2008 Research Paper of Special Issue
Published in advance: September 9, 2019
Published: October 31, 2019

Production of a Tunnel Mosaic Image Using Fisheye Lens Camera [PDF]

Gihong Kim and Junhee Youn

(Received April 4, 2019; Accepted July 25, 2019)

Keywords: fisheye lens, tunnel, mosaic image, cylindrical projection, image correction

Methods of monitoring tunnel interior walls have mainly focused on laser scanners or line scan cameras. In this study, we propose a method of acquiring images of tunnel interior walls using a fisheye lens camera. First, we produce rectangular images that include the tunnel walls and floors by applying a cylindrical projection transformation to the circular fisheye lens images. Distortions are corrected to produce more realistic images, which are then connected to produce a tunnel mosaic image. The advantage of this method is that it can save working time and relatively reduce costs. The tunnel mosaic image produced by our method can be used for tunnel surface inspection to detect problems such as large cracks, efflorescence caused by water leakage, and exfoliation.

Corresponding author: Junhee Youn

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Cite this article
Gihong Kim and Junhee Youn, Production of a Tunnel Mosaic Image Using Fisheye Lens Camera, Sens. Mater., Vol. 31, No. 10, 2019, p. 3245-3259.

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