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.
BibTeX
@article {10.1111:cgf.13101, journal = {Computer Graphics Forum}, title = {{Computational Light Painting Using a Virtual Exposure}}, author = {Salamon, Nestor Z. and Lancelle, Marcel and Eisemann, Elmar}, year = {2017}, publisher = {The Eurographics Association and John Wiley & Sons Ltd.}, ISSN = {1467-8659}, DOI = {10.1111/cgf.13101} }