human: Given a node-centered hypergraph: <hypergraph>, where nodes represent authors and hyperedges represent groups of authors who co-authored the same paper.

Details of the hypergraph:
Center node: "Lumisight Table: an interactive view-dependent tabletop display"
  Abstract: A novel tabletop display provides different images to different users surrounding the system. It can also capture users' gestures and physical objects on the tabletop. The Lumisight Table approach is based on the optical design of a special screen system composed of a building material called Lumisty and a Fresnel lens. The system combines these films and a lens with four projectors to display four different images, one for each user's view. In addition, we need appropriate input methods for this display media. In the current state of the project, we can control computers by placing physical objects on the display or placing our hands over the display. This screen system also makes it possible to use a camera to capture the appearance of the tabletop from inside of the system. Our other main idea is to develop attractive and specialized applications on the Lumisight Table, including games and applications for computer-supported cooperative-work (CSCW) environments. The projected images can be completely different from each other, or partially identical and partially different. Users can share the identical parts as public information, because all users can see it. This article is available with a short video documentary on CD-ROM.

Connected through hyperedge HE-1 (induced by source paper "Interactive environment-aware display bubbles"):
  with members:
    - "Occlusion-aware interfaces"

Connected through hyperedge HE-2 (induced by source paper "How people use orientation on tables: comprehension, coordination and communication"):
  with members:
    - "Empirical development of a heuristic evaluation methodology for shared workspace groupware"
    - "Beyond flat surface computing: challenges of depth-aware and curved interfaces"

Question: Please tell me which research area the center author belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science