Computational Light Painting Using a Virtual Exposure. (23rd May 2017)

• Record Type: Journal Article
• Authors: Salamon, Nestor Z.; Lancelle, Marcel; Eisemann, Elmar
• Is Part Of: Computer graphics forum. Volume 36:Number 2(2017)
• Page Start: 1
• Page End: 8
• Publication Date: 2017-05-23
• Subjects: Categories and Subject Descriptors (according to ACM CCS) -- I.3.4 [Computer Graphics]: Graphics Utilities—Paint systems; Computer graphics -- Periodicals; 006.605
• DOI: 10.1111/cgf.13101
• Languages: English
• ISSNs: 0167-7055

Abstract

Abstract: 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.