Mapping and re-localization for mobile augmented reality

Abstract : Using Simultaneous Localization And Mapping (SLAM) methods become more and more common in Augmented Re- ality (AR). To achieve real-time requirement and to cope with scale factor and the lack of absolute positioning issue, we pro- pose to decouple the localization and the mapping step. We explain the benefits of this approach and how a SLAM strategy can still be used in a way that is meaningful for the end user. The method we proposed has been fully implemented on various smartphone in order to show its efficiency.