MM '09 [electronic resource] : proceedings of the 2009 ACM Multimedia Conference & Co-located Workshops : October 19-24, 2009, Beijing, China : AMC '09, CEA '09, EiMM '09, IMCE '09, LS-MMRM '09, MiFor '09, MSIADU '09, MTDL '09, MTDL '09, SSCS '09, WSM '09, & WSMC '09 / sopnsored by ACM SIGMM