Topology authentication for piping isometric drawings ?
The topology authentication problem of piping isometric drawings is addressed. A semi-fragile watermarking scheme for the topology authentication is proposed. The proposed scheme is robust against local similarity transformations. The proposed scheme is invariant to the stretching operation on pipes. The proposed scheme provides good tamper localization accuracy.
topology authentication piping isometric drawing watermarking local similarity transformations topology integrity product and manufacturing information (pmi)