This book constitutes the refereed proceedings of the 7th International Conference on Advanced Concepts for Intelligent Vision Systems, ACIVS 2005, held in Antwerp, Belgium in September 2005. The 90 revised full papers presented were carefully reviewed and selected from around 200 submissions. The papers are organized in topical sections on biometrics, classification and recognition, content and performance characterization, image and video analysis, image and video coding, image and video segmentation, medical image processing applications, motion estimation and tracking, noise reduction and restauration, and real-time processing and hardware.