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EUROGRAPHICS
2010
Eurographics

Rendering Wave Effects with Augmented Light Field

9 years 4 months ago
Rendering Wave Effects with Augmented Light Field
Ray–based representations can model complex light transport but are limited in modeling diffraction effects that require the simulation of wavefront propagation. This paper provides a new paradigm that has the simplicity of light path tracing and yet provides an accurate characterization of both Fresnel and Fraunhofer diffraction. We introduce the concept of a light field transformer at the interface of transmissive occluders. This generates mathematically sound, virtual, and possibly negative-valued light sources after the occluder. From a rendering perspective the only simple change is that radiance can be temporarily negative. We demonstrate the correctness of our approach both analytically, as well by comparing values with standard experiments in physics such as the Young’s double slit. Our implementation is a shader program in OpenGL that can generate wave effects on arbitrary surfaces. Categories and Subject Descriptors (according to ACM CCS): I.3.7 [Computer Graphics]: Thr...
Se Baek Oh, Sriram Kashyap, Rohit Garg, Sharat Cha
Added 11 Mar 2010
Updated 15 Mar 2010
Type Conference
Year 2010
Where EUROGRAPHICS
Authors Se Baek Oh, Sriram Kashyap, Rohit Garg, Sharat Chandran, Ramesh Raskar
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