Masaaki Fujiyoshi received the B.A., M.Eng., and Ph.D. degrees from Saitama University, Japan, in 1995, 1997, and 2001, respectively. In 2001, he joined Tokyo Metropolitan University, Japan, where he is currently a Professor at the Academic Information Infrastructure Center. His research interests include image and video media security, image and video processing and analysis, and media technology applications. Dr. Fujiyoshi is a Senior Member of the Institute of Electronics, Information and Communication Engineers (IEICE), Japan, and a member of the Institute of Image Information and Television Engineers (ITE), the Japan Society for Educational Technology (JSET), the IEEE, the European Association for Signal Processing (EURASIP), and the Asia-Pacific Signal and Information Processing Association (APSIPA). He was a co-recipient of the IEICE Best Paper Award and the ITE Katayanagi Best Paper Award. He has served as a Guest Editor for several special issues of IEICE Transactions on Fundamentals and IEICE Transactions on Information and Systems, and has been serving as an Associate Editor for IEICE Transactions on Information and Systems since 2024.