Fig. 1From: Augmented reality-based electrode guidance system for reliable electroencephalographyWorkflow of the proposed electrode guidance system. In the initial scan step, \(A_{0}\) is the coordinate system of initial scan data, \(A_{i}\) is the current scanning coordinate system with an index of surface registration, i. By real-time surface registration, the transformation between the initial coordinate system and the current coordinate system is updatedBack to article page