by Hiroki Nishino.

We developed a novel marker tracking method with shape-free, designable markers, which can be visually meaningful to users. The method can work fast enough to provide a real-time camera- based interaction even on low performance CPUs such as ones used in mobile Internet devices. Features such as visually communicative design and inexpensive computational cost are very desirable for users with mobile devices in the mobile/pervasive interaction environment.

The method utilizes the topological region adjacency to detect the marker candidates and then apply a simple method similar to geometric-hashing to determine the detected maker by voting to the hash tables. By such a combination of two different approaches, our method can distinguish those markers with the same topological structure and is also capable of 6-DoF pose estimation whereas most of the existing topology-based systems can not distinguish markers with the same topological structure and are incapable of 6-DoF pose estimation.

Publications:
H. Nishino, A Shape-free Designable 6DoF Marker Tracking Method for Camera-based Interaction in Mobile Environment, The 18th ACM International Conference on Multimedia (ACM MM 2010), Florence, Italy, 2010 Oct. pp.1055-1058
H. Nishino, A Shape-free Designable 6DoF Marker Tracking Method, The 37th ACM SIGGRAPH International Conference and Exhibition on Computer Graphics and Interactive Techniques (ACM SIGGRAPH 2010), CA, USA, 2010 Jul.