Title

Visibility Editing For All-Frequency Shadow Design

Authors

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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