“Table-top Computed Lighting for Practical Digital Photography” by Mohan, Tumblin, Bodenheimer, Bailey and Grimm
Conference:
Type(s):
Title:
- Table-top Computed Lighting for Practical Digital Photography
Session/Category Title: Relighting
Presenter(s)/Author(s):
Abstract:
We apply simplified image-based lighting methods to reduce the equipment, cost, time, and specialized skills required for high-quality photographic lighting of desktop-sized static objects such as museum artifacts. We place the object and a computer-steered moving-head spotlight inside a simple foam-core enclosure, and use a camera to quickly record low-resolution photos as the light scans the box interior. Optimization guided by interactive user sketching selects a small set of frames whose weighted sum best matches the target image. The system then repeats the lighting used in each of these frames, and constructs a high resolution result from re-photographed basis images. Unlike previous image-based relighting efforts, our method requires only one light source, yet can achieve high resolution light positioning to avoid multiple sharp shadows. A reduced version uses only a hand-held light, and may be suitable for battery-powered, field photography equipment that fits in a backpack.
References:
Anrys, F., and Dutre, P. ́ 2004. Image based lighting design. In The 4th IASTED International Conference on Visualization, Imaging, and Image Processing.
Debevec, P., Hawkins, T., Tchou, C., Duiker, H.-P., Sarokin, W., and Sagar, M. 2000. Acquiring the reflectance field of a human face. In SIGGRAPH ’00, 145–156.
