“Table-top Computed Lighting for Practical Digital Photography”

  • ©Ankit Mohan, Jack Tumblin, Bobby Bodenheimer, Reynold J. Bailey, and Cindy M. Grimm

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Title:

    Table-top Computed Lighting for Practical Digital Photography

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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.


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