Computational Light Painting Using a Virtual Exposure

Journal article (2017)

Authors

N. Ziliotto Salamon Computer Graphics and Visualisation -

Marcel Lancelle ETH Zürich

E. Eisemann Computer Graphics and Visualisation -

Research Group

Computer Graphics and Visualisation () (TU Delft)

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Published Date

2017

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Intelligent Systems

Research Group

Computer Graphics and Visualisation

Abstract

Light painting is an artform where a light source is moved during a long-exposure shot, creating trails resembling a stroke on a canvas. It is very difficult to perform because the light source needs to be moved at the intended speed and along a precise trajectory. Additionally, images can be corrupted by the person moving the light. We propose computational light painting, which avoids such artifacts and is easy to use. Taking a video of the moving light as input, a virtual exposure allows us to draw the intended light positions in a post-process. We support animation, as well as 3D light sculpting, with high-quality results.

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