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Computational Light Painting Using a Virtual Exposure
Author(s) -
Salamon Nestor Z.,
Lancelle Marcel,
Eisemann Elmar
Publication year - 2017
Publication title -
computer graphics forum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 120
eISSN - 1467-8659
pISSN - 0167-7055
DOI - 10.1111/cgf.13101
Subject(s) - computer science , computer graphics (images) , computer vision , artificial intelligence , shot (pellet) , animation , painting , light source , process (computing) , trajectory , optics , visual arts , art , materials science , physics , astronomy , operating system , metallurgy
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.