Light & Sound

    Wednesday, 20 November

    09:00 - 10:45

    Room S224 + S225

    Inverse Volume Rendering with Material Dictionaries

    We present a system for measuring the bulk scattering properties---the phase function, scattering coefficient, and absorption coefficient---of a homogeneous volumetric material sample. The proposed system: (1) can be used for both solid and liquid materials; and (2) does not restrict the shape of the phase function.

    Ioannis Gkioulekas, Harvard University
    Shuang Zhao, Cornell University
    Kavita Bala, Cornell University
    Todd Zickler, Harvard University
    Anat Levin, The Weizmann Institute of Science

    Inverse Bi-scale Material Design

    We present a novel computational framework for inverse bi-scale material design. We demonstrate a variety of editing operations, including finding visually equivalent details that produce similar large-scale appearance, which can be useful in applications such as physical fabrication of materials.

    Hongzhi Wu, Zhejiang University
    Julie Dorsey, Yale University
    Holly Rushmeier, Yale University

    Joint Importance Sampling of Low-Order Volumetric Scattering

    We present novel Monte Carlo techniques for joint importance sampling of light transport paths in participating media. Our techniques importance sample the product of geometry and scattering terms along sequences of path vertices. We integrate them into path tracing, bidirectional path tracing, and many-light methods, demonstrating significant variance reduction.

    Iliyan Georgiev, Saarland University
    Jaroslav Křivánek, Charles University in Prague
    Toshiya Hachisuka, Aarhus University
    Derek Nowrouzezahrai, University of Montreal
    Wojciech Jarosz, Disney Research Zurich

    Wave-Ray Coupling for Interactive Sound Propagation in Large Complex Scenes

    We present a novel hybrid approach that couples geometric and numerical acoustic techniques for interactive sound propagation in complex environments.

    Hengchin Yeh, University of North Carolina Chapel Hill
    Ravish Mehra, University of North Carolina Chapel Hill
    Zhimin Ren, University of North Carolina Chapel Hill
    Lakulish Antani, University of North Carolina Chapel Hill
    Dinesh Manocha, University of North Carolina Chapel Hill
    Ming Lin, University of North Carolina Chapel Hill