Computational Light Painting Using a Virtual Exposure

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 corrup...

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Bibliographic Details
Published in:Computer graphics forum 2017-05, Vol.36 (2), p.1-8
Main Authors: Salamon, Nestor Z., Lancelle, Marcel, Eisemann, Elmar
Format: Article
Language:English
Subjects:
Animation
Art & technology
Categories and Subject Descriptors (according to ACM CCS)
Computation
Exposure
I.3.4 [Computer Graphics]: Graphics Utilities—Paint systems
Light
Photography
Production planning
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Description
Summary: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.
ISSN:0167-7055
1467-8659
DOI:10.1111/cgf.13101