ACM Multimedia 2011(MM'11) is the worldwide premier multimedia conference and a key event to display scientific achievements and innovative industrial products. The conference offers to scientists and practitioners in the area of multimedia plenary, scientific and technical sessions, tutorials, competitions, panels and discussion meetings on relevant and challenging research questions. ACM Multimedia 2011(MM'11) will also provide the opportunity of interaction between artists and engineers with the aim of reflecting on the impact of multimedia technologies on contemporary digital culture.