Hing Kai Chan, Professor of Operations Management at the University of Nottingham Ningbo China (UNNC), and his team recently gained authorisation from the National Intellectual Property Office for the patent “Digital watermarking method for 3D printing models”. The new patent tracks and protects intellectual property in 3D printing.
“The toughest problem in 3D printing is not technology, but the protection of intellectual property,” Professor Chan introduces. At present, the anti-counterfeiting of 3D printing model is mainly achieved by embedding digital watermark into triangular mesh data, but not all the model files are in triangular mesh format, and the embedded digital watermark may be lost in printing and manufacturing.
The model invented by Professor Chan’s team uses the algorithm to transform the 3D spatial matrix similarity problem into 2D image matching problem with high accuracy in the detection result. Moreover, the digital watermark is almost invisible to the naked eye, which