Call for participation for the 11th IEEE International Symposium on Mixed and Augmented Reality (ISMAR 2012): the symposium will be held from 5 - 8 November 2012 at Georgia Tech in Atlanta, USA. The fields of Mixed Reality (MR) and Augmented Reality (AR) seek to interactively mix virtual media with a person's perception of the physical world around them. Whether interactively combining physical and virtual objects and environments in 3D, or reacting to location orother aspects of a users context, these paradigms enable fascinating new types of user interfaces, and are beginning to show significant impacton industry and society. The field is highly interdisciplinary, and MR/AR concepts are applicable to a wide range of applications. Since 1998, ISMAR and its forerunner events, IWAR/ISAR and ISMR, have been the premier forums in this vital field.