“Real time rendering of realistic surface diffraction with low rank factorisation” by Ghosh and Toisoul
Conference:
Type(s):
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.
Additional Images:
![©Antoine Toisoul and Abhijeet Ghosh](https://history.siggraph.org/wp-content/uploads/2022/09/2017-Poster-45-Toisoul_Real-time-rendering-of-realistic-surface-di_raction-04.jpg)
![©Antoine Toisoul and Abhijeet Ghosh](https://history.siggraph.org/wp-content/uploads/2022/09/2017-Poster-45-Toisoul_Real-time-rendering-of-realistic-surface-di_raction-05.jpg)