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Real-Time Multispectral Rendering with Complex Illumination

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Techniques for rendering with illumination maps captured from real-world environments have provided the means to produce complex, realistic patterns of reflections in real-time computer graphics simulations. While the directional aspects of light emission and surface reflection are modeled comprehensively with these methods, the spectral component is typically represented with a three-channel RGB workflow. In this paper, we present a multispectral framework for capturing environmental illumination maps and incorporating them into a real-time rendering pipeline. The framework maintains two sets of trichromatic data through a real-time rendering workflow, using a six-channel representation optimized to allow for color-accurate relighting under a range of illuminants. We present the design of an end-to-end computer graphics color pipeline from capture to display, provide simulation results on the pipeline's colorimetric accuracy, and develop a prototype to demonstrate how the framework can be implemented in a GPU-based graphics shader architecture.
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Document Type: Research Article

Publication date: 2011-01-01

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  • CIC is the premier annual technical gathering for scientists, technologists, and engineers working in the areas of color science and systems, and their application to color imaging. Participants represent disciplines ranging from psychophysics, optical physics, image processing, color science to graphic arts, systems engineering, and hardware and software development. While a broad mix of professional interests is the hallmark of these conferences, the focus is color. CICs traditionally offer two days of short courses followed by three days of technical sessions that include three keynotes, an evening lecture, a vibrant interactive (poster) papers session, and workshops. An endearing symbol of the meeting is the Cactus Award, given each year to the author(s) of the best interactive paper; there are also Best Paper and Best Student Paper awards.

    Please note: for Purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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