A Manipulable Vision-Based 3D Input Device for Space Curves

Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5098)


This paper presents a novel and user friendly input device for 3D curves. The system is based on a piece of flexible wire and a single off-the-shelf photo camera: the user bends the wire to the desired 3D shape; then, an ad-hoc technique for 3D reconstruction is used to recover its 3D shape (a space curve) from a single image.

The result is a simple, unusual input device with many potential applications, ranging from games to 3D modeling. For untrained users, this is a much more intuitive input technique than alternative methods. A disadvantage is that changes to the wire’s shape are not reflected in real time on the recovered representation.

We give a detailed description of the system’s structure, briefly recall the reconstruction technique, and describe a prototype in which the input device is seamlessly integrated in the popular Blender 3D modeling software. We finally show simple example applications in which the shape of the wire is used to define the trajectory of moving objects, to deform a 3D object, and to animate a 3D character.


Space Curve Input Device Space Curf Couple Point Tangible User Interface 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  1. 1.Politecnico di MilanoItaly

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