This book constitutes the proceedings of the 22nd International Conference on Advanced Concepts for Intelligent Vision Systems, ACIVS 2025, held in Tokyo, Japan, during July 2025. The 51 papers included in the proceedings were carefully reviewed and selected from 92 submissions. They were organized in topical sections as follows: Security and encryption; surveillance and biometry; computer vision and machine learning; remote sensing and natural areas monitoring; medical imaging; sports analytics; and robotics and drones.