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http://dx.doi.org/10.7780/kjrs.2014.30.3.5

Assessment of a smartphone-based monitoring system and its application  

Ahn, Hoyong (Department of Spatial Information Engineering, Pukyoung National University)
Choi, Chuluong (Department of Spatial Information Engineering, Pukyoung National University)
Yu, Yeon (Spatial Information Institute, Pukyoung National University)
Publication Information
Korean Journal of Remote Sensing / v.30, no.3, 2014 , pp. 383-397 More about this Journal
Abstract
Information technology advances are allowing conventional surveillance systems to be combined with mobile communication technologies, creating ubiquitous monitoring systems. This paper proposes monitoring system that uses smart camera technology. We discuss the dependence of interior orientation parameters on calibration target sheets and compare the accuracy of a three-dimensional monitoring system with camera location calculated by space resectioning using a Digital Surface Model (DSM) generated from stereo images. A monitoring housing is designed to protect a camera from various weather conditions and to provide the camera for power generated from solar panel. A smart camera is installed in the monitoring housing. The smart camera is operated and controlled through an Android application. At last the accuracy of a three-dimensional monitoring system is evaluated using a DSM. The proposed system was then tested against a DSM created from ground control points determined by Global Positioning Systems (GPSs) and light detection and ranging data. The standard deviation of the differences between DSMs are less than 0.12 m. Therefore the monitoring system is appropriate for extracting the information of objects' position and deformation as well as monitoring them. Through incorporation of components, such as camera housing, a solar power supply, the smart camera the system can be used as a ubiquitous monitoring system.
Keywords
Camera calibration; close-range photogrammetry; smart camera; ubiquitous monitoring;
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