Salamon, Nestor Z.Lancelle, MarcelEisemann, ElmarLoic Barthe and Bedrich Benes2017-04-222017-04-2220171467-8659https://doi.org/10.1111/cgf.13101https://diglib.eg.org:443/handle/10.1111/cgf13101Light 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.I.3.4 [Computer Graphics]Graphics UtilitiesPaint systems10.1111/cgf.13101001-008