@inproceedings{77af5afd4b9f42b5b5d128146f38d0ff,
title = "A preliminary study on the use of optical navigation sensor for two dimensional crack propagation monitoring",
abstract = "In this paper, a preliminary study on the development of a wireless image-based sensor for two-dimensional (2D) crack propagation monitoring is reported. This sensor contains an optical navigation sensor board (ADNS-9500) which is incorporated into the Imote2 IPR2400 platform. To monitor crack propagation, the Imote2 sends a signal to the ADNS-9500 to switch on the built-in laser and camera collecting images reflected from the concrete surface. The captured images are processed by an optical flow method to obtain the relative displacement between images. A series of tests have been conducted to calibrate the accuracy of the proposed crack sensor. Results show that the crack sensor exhibits a strong linearity under 2D movement and can track the movement quiet well.",
keywords = "Crack sensor, Imote2, Optical flow, Optical navigation sensor board",
author = "Chang, {Chih Chen} and Man, {Sin Hang} and Ng, {Cheng Zhong} and Muhammad Hassan and Amine Bermak",
year = "2012",
doi = "10.1117/12.914546",
language = "English",
isbn = "9780819490025",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012",
note = "Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012 ; Conference date: 12-03-2012 Through 15-03-2012",
}