Advances in Multimedia Modeling : 13th International Multimedia Modeling Conference, MMM 2007, Singapore, January 9-12, 2007, Proceedings, Part I - Tat-Jen Cham, Jianfei Cai, Chitra Dorai, Deepu Rajan, Tat-Seng Chua, Liang-Tien Chia ((Lecture Notes in Computer Science))