Fig. 3From: Semi-automatic measurements of foot morphological parameters from 3D plantar foot scansSoftware analysis of the 3D foot scans. a Acquisition of the foot plantar surface; b identification of three non-aligned surface points to find the three axes of the local reference frame; c alignment of the foot local reference frame with the global reference system; d 3D mapping of vertical position of foot surface on the I x J matrix, after smoothing and filteringBack to article page