2023 12th International Conference on Information and Electronics Engineering was held during February 18-20, 2023. The conference ICIEE 2023 has been held in both online and onsite mode. The participants can choose to either attend the conference virtually, or join the event in person.ICIEE 2023 is sponsored by Jeju National University with technical support from Fukuoka Institute of Technology, Tokyo University of Science, CISCO Networking Academy. ICIEE 2023 continues a tradition of bringing together researchers, academics and professionals from all over the world, experts in information, communication and networks. Submitted papers were received and sent for preliminary and peer review conducted by the technical committees. Professional comments were given according to the aspects of originality, innovation, applicability, technical merit, organizing and writing, relevance to conference. After several rounds of review procedure, 12 excellent papers had been published in the conference proceedings. The proceedings contain a collection of research papers, organized as 3 chapters: smart image processing and application, digital communication network and signal analysis, Modern intelligent information system design and model calculation. We hope that this volume of conference proceedings will serve as a valuable reference for researchers, educators, and practitioners.We would like to thank the organization committees, the members of the program committees and technical committees. They have worked very hard in reviewing papers and making valuable suggestions for the authors to improve their work. At the same time, we would like to thank all the authors for their work, their interest in our conference, the quality of their presentations and their passion to communicate really pushed this conference into a series of successes. Hope you could benefit from this proceeding!ICIEE 2023Conference ChairYungcheol ByunFull Professor/Ph.D.Dept. of Computer Engineering, Jeju National UniversityList of Committee is available in this Pdf.