Dr. Xu Wang received the M.E. degree from Central China Normal University, Wuhan, China, in 2018, and the Ph.D. degree from Feng Chia University, Taichung, Taiwan, in 2022. He is currently a Lecturer at the School of Information Science and Engineering, University of Jinan, Jinan, China. His research interests include image processing, multimedia security, information hiding, reversible data hiding, and deep learning.

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Dr. Ching-Chun Chang received his PhD from the Department of Computer Science, University of Warwick, UK, in 2019, under the supervision of Prof. Chang-Tsun Li. He received a BBA degree in Information Management from the National Central University, Taiwan, in 2015. He was granted the Marie-Curie fellowship in 2017. He engaged in a short-term scientific mission supported by European Cooperation in Science and Technology Actions at the Faculty of Computer Science, Otto von Guericke University Magdeburg, Germany, in 2016. He participated in a research and innovation staff exchange scheme supported by Marie Skłodowska-Curie Actions at the Department of Electrical and Computer Engineering, New Jersey Institute of Technology, USA, in 2017. He was a visiting scholar at the School of Computer and Mathematics, Charles Sturt University, Australia in 2018 and at the School of Information Technology, Deakin University, Australia in 2019. He has been a research fellow at the Department of Electronic Engineering, Tsinghua University, China since 2020. He is currently a postdoctoral fellow with the National Institute of Informatics, Japan. His research interests include digital watermarking, steganography, secret sharing, applied cryptography, digital forensics, multimedia security, image processing, machine learning, natural language processing, and computational linguistics.

Prof. Dr. Chin-Chen Chang is a Ho Yi-Wu Chair Professor at Feng Chia University, Taiwan, an Honorary Professor and Joint Appointment Professor at National Chung Cheng University, Taiwan and a Joint Appointment Professor at National Tsing Hua University, Taiwan. He obtained his B.E. and M.E. degrees in applied mathematics and computer and decision sciences from National Tsinghua University in Hsinchu in 1977 and 1979, respectively, and his Ph.D. in computer engineering from National Chiao Tung University, Hsinchu, Taiwan, in 1982. He taught at the National Chung Cheng University, Minxiong, Taiwan, and since 2005 has been a Chair Professor with the Department of Information Engineering and Computer Science at Feng Chia University, Taichung, Taiwan. His current research interests include database design, computer cryptography, image compression, and data structures. Prof. Dr. Chang is the recipient of many research awards and honorary positions such as the Outstanding Talent in Information Sciences of Taiwan. He is currently a fellow of the IEEE and the IEE (UK) and a member of the IEICE.