Fig. 1 Measuring system and coordinate systems defined for the measurement process: ( a ) coordinate measuring system using AprilTag and ( b ) probe More

Fig. 2 Projection of the AprilTag coordinate system into the pixel coordinate system of the image plane using homography matrix H More

Fig. 3 Automated generation of 3D model (SG) with a fixed cross section: ( a ) given 2D contour (CPL), ( b ) measured points (VL) of extrusion, ( c ) frame list for extrusion generated based on VL, and ( d ) extruded 3D structure More

Fig. 4 Automated digitization of a 3D structure based on aluminum profiles. Reference frames are defined using an AprilTag. The reference frame in ( a ) is defined such that the x -axis aligns with the long edge. The 3D aluminum profile structure in ( c ) is rotated in the positive direction of t... More

Fig. 5 Automated digitization of a triangular prism: ( a ) data points of sample and measurement, ( b ) comparison of sample and measured CPL, ( c ) 3D-printed sample structure, and ( d ) digitized 3D model More

Fig. 6 Automated digitization of a cylinder: ( a ) design parameters of sample cylinder and measurement, ( b ) comparison of sample and measured CPL, ( c ) 3D-printed sample structure, and ( d ) digitized 3D model More

Fig. 7 Automated digitization of a half sphere: ( a ) design parameters of sample sphere and measurement, ( b ) comparison of sample and measured sphere, ( c ) 3D-printed structure, and ( d ) digitized 3D model More