Dynamic anamorphosis

Franc Solina and Borut Batagelj (2007) Dynamic anamorphosis. In: 4th International Conference on Enactive Interfaces, November 19th-22th, 2007, Grenoble, Franc.

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Abstract

In this paper we define the concept of dynamic anamorphosis. A classical or static anamorphic image requires a specific, usually a highly oblique view direction, from which the observer can see the anamorphosis in its correct form. This paper introduces dynamic anamorphosis which adapts itself to the changing position of the observer so that wherever the observer moves, he sees the same undeformed image. This dynamic changing of the anamorphic deformation in concert with the movement of the observer requires from the system to track the 3D position of the observer’s head and the recomputation of the anamorphic deformation in real time. This is achieved using computer vision methods which consist of face detection/tracking of the selected observer and stereo reconstruction of its 3D position while the anamorphic deformation is modeled as a planar homography. Dynamic anamorphosis can be used in the context of art installation, in video conferencing to fix the problem of the missing eye contact and can enable an undistorted view in restricted situations.

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