Advances in Multimedia Information Processing — PCM 2001 : Second IEEE Pacific Rim Conference on Multimedia Beijing China October 24–26 2001 Proceedings This book constitutes the refereed proceedings of the Second IEEE Pacific Rim Conference on Multimedia (IEEE PCM 2001) held in Beijing China in October e2001. The revised 104 regular and 53 poster papers presented were carefully reviewed and selected from a total of 244 papers. The papers are organized in sections on wearable computing retrieval techniques coding techniques systems visions and graphics face multimedia retrieval multimedia education multimedia presentation and databases data hiding image and video coding retrieval speech and sound networking spoken dialog multimedia security multimedia networking learning and recognition and watermarking