"IWCIA 2025 is the twenty-third in a series of International Workshops on Combinatorial Image Analysis. It will be held in hybrid mode with base in Szeged, Hungary, September 24-26, 2025. The scientific program of the workshop consists of keynote talks and contributed papers. The conference proceedings will be published by Springer in Lecture Notes in Computer Science (approved). Scope Image analysis is a scientific discipline providing theoretical foundations and methods for solving problems appearing in a wide range of areas, as diverse as medicine, robotics, defense, and security. As a rule, the processed data are discrete