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 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.

@Article { SLE17,
  author       = "Salamon, Nestor Z. and Lancelle, Marcel and Eisemann, Elmar",
  title        = "Computational Light Painting Using a Virtual Exposure",
  journal      = "Computer Graphics Forum (Proceedings of Eurographics)",
  number       = "2",
  volume       = "36",
  year         = "2017",
  key          = "10.1111/cgf.13101",
  url          = "http://graphics.tudelft.nl/Publications-new/2017/SLE17"
}