title: Multimodal spatial calibration for accurately registering EEG sensor positions.
abstract: This paper proposes a fast and accurate calibration method to calibrate multiple multimodal sensors using a novel photogrammetry system for fast localization of EEG sensors. The EEG sensors are placed on human head and multimodal sensors are installed around the head to simultaneously obtain all EEG sensor positions. A multiple views' calibration process is implemented to obtain the transformations of multiple views. We first develop an efficient local repair algorithm to improve the depth map, and then a special calibration body is designed. Based on them, accurate and robust calibration results can be achieved. We evaluate the proposed method by corners of a chessboard calibration plate. Experimental results demonstrate that the proposed method can achieve good performance, which can be further applied to EEG source localization applications on human brain.
authors.affiliation: College of Computer Science and Technology, Zhejiang University of Technology, Hangzhou 310023, China.
authors.forename: Jianhua
authors.identifier: 0000-0001-7844-6035
authors.initials: J
authors.lastname: Zhang
authors.affiliation: College of Computer Science and Technology, Zhejiang University of Technology, Hangzhou 310023, China.
authors.forename: Jian
authors.identifier: 0000-0002-0651-7532
authors.initials: J
authors.lastname: Chen
authors.affiliation: College of Computer Science and Technology, Zhejiang University of Technology, Hangzhou 310023, China.
authors.forename: Shengyong
authors.initials: S
authors.lastname: Chen
authors.affiliation: College of Computer Science and Technology, Zhejiang University of Technology, Hangzhou 310023, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Xiao
authors.affiliation: National Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Li
mesh_terms: D000465:Algorithms; D001921:Brain / Q000502:physiology; D001931:Brain Mapping / Q000379:methods; D002138:Calibration; D003198:Computer Simulation; D004569:Electroencephalography / Q000379:methods*; D004867:Equipment Design; D006801:Humans; D010780:Photogrammetry / Q000379:methods*; D015203:Reproducibility of Results; D012984:Software