Fig. 3From: Estimation of gait normality index based on point clouds through deep auto-encoderVisualizations of a, b fitting a cylinder onto a 3D point cloud and c the conversion from 16 cylinder’s sectors to a 2D histogram with size of 4×4. The coordinate system in the three sub-figures is to present the mapping between each cylindrical sector and the corresponding elemental index in the histogramBack to article page