Real-time mobile 3D temperature mapping
Date of Issue2014
School of Electrical and Electronic Engineering
The ability to measure surface temperature and represent it on a metrically accurate 3D model has proven applications in many areas, such as medical imaging, building energy auditing, and search and rescue. A system is proposed that enables this task to be performed with a handheld sensor, and for the first time with results able to be visualized and analyzed in real time. A device comprising a thermal-infrared camera and range sensor is calibrated geometrically and used for data capture. The device is localized using a combination of iterative closest point and video-based pose estimation from the thermal-infrared video footage, which is shown to reduce the occurrence of failure modes. Furthermore, the problem of misregistration, which can introduce severe distortions in assigned surface temperatures is avoided through the use of a risk-averse neighborhood weighting mechanism. Results demonstrate that the system is more stable and accurate than previous approaches, and can be used to accurately model complex objects and environments for practical tasks.
DRNTU::Engineering::Electrical and electronic engineering
IEEE sensors journal
© 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [http://dx.doi.org/10.1109/JSEN.2014.2360709].