“Maximum entropy light source placement” by Gumhold

  • ©Stefan Gumhold

Conference:


Type:


Interest Area:


    Application

Title:

    Maximum entropy light source placement

Session/Category Title:   Lighting


Presenter(s)/Author(s):



Abstract:


    Several methods have been proposed to help the user to position lighting sources for a given view of a 3d-scene. In the first kind of methods the user defines a desired illumination through highlight and shadow locations for which the lighting system optimizes the light positions. The more automatic approaches are based on perceptual image metrics. [Marks et al. 1997] define an image metric that measures how different two images are perceived. A collection of maximally different images is presented to the user for selection. [Shacked and Lischinski 2001] define a perceptual based image quality metric composed of six contributing terms, for which the user has to specify weights before the system searches for a locally optimal light source placement.

References:


    1. Marks, J., Andalman, B., Beardsley, P. A., Freeman, W., Gibson, S., Hodgins, J., Kang, T., Mirtich, B., Pfister, H., Ruml, W., Ryall, K., Seims, J., and Shieber, S. 1997. Design galleries: A general approach to setting parameters for computer graphics and animation. In SIGGRAPH 97, 389–400.
    2. Shacked, R., and Lischinski, D. 2001. Automatic lighting design using a perceptual quality metric. In EUROGRAPHICS 2001, 215–226.


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