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    Structure-aware lighting design for volume visualization

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    Authors
    Tao, Yubo
    Lin, Hai
    Dong, Feng
    Wang, Chao
    Clapworthy, Gordon J.
    Bao, Hujun
    Issue Date
    2012-12
    Subjects
    automatic lighting design
    lighting similarity
    structural dissimilarity
    
    Metadata
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    Abstract
    Lighting design is a complex, but fundamental, problem in many fields. In volume visualization, direct volume rendering generates an informative image without external lighting, as each voxel itself emits radiance. However, external lighting further improves the shape and detail perception of features, and it also determines the effectiveness of the communication of feature information. The human visual system is highly effective in extracting structural information from images, and to assist it further, this paper presents an approach to structure-aware automatic lighting design by measuring the structural changes between the images with and without external lighting. Given a transfer function and a viewpoint, the optimal lighting parameters are those that provide the greatest enhancement to structural information - the shape and detail information of features are conveyed most clearly by the optimal lighting parameters. Besides lighting goodness, the proposed metric can also be used to evaluate lighting similarity and stability between two sets of lighting parameters. Lighting similarity can be used to optimize the selection of multiple light sources so that different light sources can reveal distinct structural information. Our experiments with several volume data sets demonstrate the effectiveness of the structure-aware lighting design approach. It is well suited to use by novices as it requires little technical understanding of the rendering parameters associated with direct volume rendering.
    Citation
    Yubo Tao, Hai Lin, Feng Dong, Chao Wang, Clapworthy, G., Hujun Bao,(2012) 'Structure-Aware Lighting Design for Volume Visualization', IEEE Transactions on Visualization and Computer Graphics 18 (12):2372-2381
    Publisher
    IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
    Journal
    IEEE Transactions on Visualization and Computer Graphics
    URI
    http://hdl.handle.net/10547/279154
    DOI
    10.1109/TVCG.2012.267
    Additional Links
    http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6327242
    Type
    Article
    Language
    en
    ISSN
    1077-2626
    ae974a485f413a2113503eed53cd6c53
    10.1109/TVCG.2012.267
    Scopus Count
    Collections
    Centre for Computer Graphics and Visualisation (CCGV)

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