ASSOCIATE PROFESSOR DR IOANNIS IVRISSIMTZIS
Department of Computer Science
Durham University, UK
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Ioannis Ivrissimtzis holds a PhD in Mathematics from the University of Southampton, UK, and is an Associate Professor at the Department of Computer Science at Durham University, UK. He has contributed to the areas of computer graphics and geometric modelling, in particular subdivision surfaces, triangle mesh compression, and surface reconstruction. His most recent work is on triangle mesh watermarking and steganalysis, computer vision applications in biometric identification, and proof of concept investigations on watermarking 3D printed objects.

 

STEGANOGRAPHY AND STEGANALYSIS FOR 3D MODELS 

Digital steganography is the embedding of information into carrier files, which could represent text, audio, images, video, or 3D models. Typical applications include copyright protection, copy control, protection against unauthorised alteration, and covert communications. Steganalysis, on the other hand, aims at the detection of hidden messages embedded into the carrier file. In this talk, we present our work on steganographic and steganalytic algorithms for 3D triangle meshes. At the end of the talk, we will also present our work on the related problem of embedding and extracting information from physical 3D printed objects, rather than digital ones. The focus of that part of the talk will be on the different requirements, challenges, and employed techniques, between these two settings of digital vs physical carrier.