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    Rights statement: Jirapong Manit, Christina Bremer, Achim Schweikard, Floris Ernst, "Patient identification using a near-infrared laser scanner," Proc. SPIE 10135, Medical Imaging 2017: Image-Guided Procedures, Robotic Interventions, and Modeling, 101352L (3 March 2017) Copyright 2017 Society of Photo Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, or modification of the contents of the publication are prohibited.

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Patient identification using a near-infrared laser scanner

Research output: Contribution to journalJournal article

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Article number101352L
<mark>Journal publication date</mark>3/03/2017
<mark>Journal</mark>Proceedings of SPIE
Volume10135
Publication statusPublished
Original languageEnglish
EventSPIE Medical Imaging, 2017, Orlando, Florida, United States - Orlando, United States
Duration: 11/02/201716/02/2017

Conference

ConferenceSPIE Medical Imaging, 2017, Orlando, Florida, United States
CountryUnited States
CityOrlando
Period11/02/1716/02/17

Abstract

We propose a new biometric approach where the tissue thickness of a person's forehead is used as a biometric feature. Given that the spatial registration of two 3D laser scans of the same human face usually produces a low error value, the principle of point cloud registration and its error metric can be applied to human classification techniques. However, by only considering the spatial error, it is not possible to reliably verify a person's identity. We propose to use a novel near-infrared laser-based head tracking system to determine an additional feature, the tissue thickness, and include this in the error metric. Using MRI as a ground truth, data from the foreheads of 30 subjects was collected from which a 4D reference point cloud was created for each subject. The measurements from the near-infrared system were registered with all reference point clouds using the ICP algorithm. Afterwards, the spatial and tissue thickness errors were extracted, forming a 2D feature space. For all subjects, the lowest feature distance resulted from the registration of a measurement and the reference point cloud of the same person.
The combined registration error features yielded two clusters in the feature space, one from the same subject and another from the other subjects. When only the tissue thickness error was considered, these clusters were less distinct but still present. These findings could help to raise safety standards for head and neck cancer patients and lays the foundation for a future human identification technique.

Bibliographic note

Jirapong Manit, Christina Bremer, Achim Schweikard, Floris Ernst, "Patient identification using a near-infrared laser scanner," Proc. SPIE 10135, Medical Imaging 2017: Image-Guided Procedures, Robotic Interventions, and Modeling, 101352L (3 March 2017) Copyright 2017 Society of Photo Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, or modification of the contents of the publication are prohibited.