human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge groups authors who co-authored the same paper.

Details of the hypergraph:
Center hyperedge (induced by source paper "Three-dimensional scene flow"):
  Abstract: Scene flow is the three-dimensional motion field of points in the world, just as optical flow is the two-dimensional motion field of points in an image. Any optical flow is simply the projection of the scene flow onto the image plane of a camera. We present a framework for the computation of dense, non-rigid scene flow from optical flow. Our approach leads to straightforward linear algorithms and a classification of the task into three major scenarios: complete instantaneous knowledge of the scene structure; knowledge only of correspondence information; and no knowledge of the scene structure. We also show that multiple estimates of the normal flow cannot be used to estimate dense scene flow directly without some form of smoothing or regularization.

Includes members:
  Member "Photorealistic scene reconstruction by voxel coloring":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "Tangible interaction + graphical interpretation: a new approach to 3D modeling")
  Member "Isometric registration of ambiguous and partial data":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "Partial 3-D Correspondence from Shape Extremities")
  Member "A new multiview spacetime-consistent depth recovery framework for free viewpoint video rendering":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "3D reconstruction of dynamic scenes with multiple handheld cameras")

Question: Please tell me which research area the co-authored paper (i.e., the source paper of the center hyperedge) belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Mathematics