Publication: Factored Time-Lapse Video
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Date
2007
Published Version
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Association for Computing Machinery
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Citation
Sunkavalli, Kalyan, Wojciech Matusik, Hanspeter Pfister, and Szymon Rusinkiewicz. 2007. Factored time-lapse video. Proceedings International Conference on Computer Graphics and Interactive Techniques, ACM SIGGRAPH 2007 papers: August 05 - 09, 2007, San Diego, California, 101-111. New York, N.Y.: ACM. Also published in ACM Transactions on Graphics 26(3): 101-111.
Abstract
We describe a method for converting time-lapse photography captured with outdoor cameras into Factored Time-Lapse Video (FTLV): a video in which time appears to move faster (i.e., lapsing) and where data at each pixel has been factored into shadow, illumination, and reflectance components. The factorization allows a user to easily relight the scene, recover a portion of the scene geometry (normals), and to perform advanced image editing operations. Our method is easy to implement, robust, and provides a compact representation with good reconstruction characteristics. We show results using several publicly available time-lapse sequences.
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Keywords
computational photography, image-based rendering and lighting, inverse problems, reflectance
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