Active Media Technology : 6th International Computer Science Conference AMT 2001 Hong Kong China December 18–20 2001 Proceedings This book constitutes the refereed proceedings of the 6th International Computer Science Conference: Active Media Technology AMT 2001 held in Hong Kong China in December 2001. The 39 revised full papers presented were carefully reviewed and selected from numerous submissions. The papers are organized in topical sections on smart digital media; Web personalization; active interfaces; autonomous agents; facial image processing; AMT supported commerce business learning and health care; tool and techniques; and algorithms