University of Twente Student Theses


A low cost 3D laser-line scanner for facial acquisitio

Bijman, A.L. (2017) A low cost 3D laser-line scanner for facial acquisitio.

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Abstract:—Biometric recognition can provide a high level of security, while offering convenience to the user. One way to perform biometric recognition is to perform facial recognition. Using 3D information in facial recognition can improve the performance of facial recognition over conventional 2D facial recognition. To perform 3D facial recognition, a 3D reconstruction of the face has to be available. Because most commercially available 3D scanning solutions that have a sufficient accuracy for performing facial recognition are often expensive, it was decided to make an open-source 3D laser-line scanner that can be used for facial acquisition. In this work, the theory behind the workings of a laserlinescannerwillbediscussed.Thenthesetupofthescanner system that is used will be introduced and several aspects of the system will be discussed. To improve the accuracy of the scanning system, an automatic calibration procedure is designed. To process the captured data and construct a 3D point cloud, a software back-end that performs laserline detection in the captures images, and computes the corresponding points in space needs to be build. The different aspects of the software back-end will be discussed and explained. After the software back-end has been discussed, the scanning system is characterized and the accuracy is tested. Then some recommendations are given to improve the accuracy and robustness of the system.
Item Type:Essay (Bachelor)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:53 electrotechnology
Programme:Electrical Engineering BSc (56953)
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