Fig. 7From: Automated extraction and validation of children’s gait parameters with the KinectSkeleton point cloud. a point could of the 3D joint positions, downsampled for visualization purposes. Each blue asterisk is a point. The green line is the first principal component (p.c.) of the cloud. The red line is the second p.c. b Point cloud projected onto the plane perpendicular to the first p.c. The second p.c. (red line) indicates the direction normal to the ground planeBack to article page