“Real time rendering of realistic surface diffraction with low rank factorisation” by Ghosh and Toisoul
Conference:
Type:
Entry Number: 45
Title:
- Real time rendering of realistic surface diffraction with low rank factorisation
Presenter(s)/Author(s):
Abstract:
We present a novel approach for real-time rendering of realistic diffraction effects in surface reflectance under environmental illumination. Renderings in arbitrary environments require the computation of a convolution. In the case of diffraction, the convolution kernel is large due to the high frequency details contained in diffraction patterns, making computations at real time framerate impractical. We propose a low rank factorisation of the diffraction kernel that allows the computation of the convolution in two passes with smaller kernels instead of a large 2D kernel. We present renderings of the diffraction produced by several surfaces and reach a performance of 50 to 100 FPS.
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