Visibility Editing For All-Frequency Shadow Design

    Authors

    J. Obert; F. Pellacini;S. Pattanaik

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Comput. Graph. Forum

    Keywords

    Computer Science, Software Engineering

    Abstract

    We present an approach for editing shadows in all-frequency lighting environments. To support artistic control, we propose to decouple shadowing from lighting and focus on providing intuitive controls to edit the former. To accomplish this task, we precompute and store scene visibility information separately from lighting and BRDFs and allow artists to edit visibility directly, by providing operations to select shadows and edit their shape. To facilitate a wider range of editing operations, we generalize visibility from binary to three-channel floating point quantities and introduce a novel shadow representation based on computation of visibility ratios between the original render and the edited one. We demonstrate our results for diffuse and glossy surfaces, still scenes and animations.

    Journal Title

    Computer Graphics Forum

    Volume

    29

    Issue/Number

    4

    Publication Date

    1-1-2010

    Document Type

    Article

    Language

    English

    First Page

    1441

    Last Page

    1449

    WOS Identifier

    WOS:000281286100022

    ISSN

    0167-7055

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