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Dr. Antonis I. Protopsaltis is a computer scientist specializing in computer graphics and computer-aided design (CAD). He obtained his Ph.D. in Computer Science at the University of Ioannina-Greece in 2010, his M.Sc. (Hons) in Computer Science (Software Engineering), and his B.Sc. (Hons) in Computer Science in 1996 and 1994 respectively at Concordia University in Montreal-Canada. He is a Special Teaching Fellow of Computer Graphics with the department of Electrical and Computer Engineering at the University of Western Macedonia, Greece, and an Affiliated Research Fellow at the Laboratory of Mechanical Systems in the department of Mechanical Engineering at the same University. He has conducted research on Geometric Modeling Methods for the Reverse Engineering of Scanned Objects using Curves, Surfaces, and Discrete Models (triangulations and point clouds), based on Geometric Constraints of Cross-Sections. His research interests are in the areas of Computer Graphics, Geometric Modeling of 3D objects, Reverse Engineering of 3D objects, Computer-Aided Design, and CAD. He has actively been involved in several Greek or European-funded research projects in these areas. He is a reviewer for international scientific journals of high impact. He has been employed as a lead computer graphics programmer in the industrial sector.