Regularised Anisotropic Nonlinear Diffusion for Rendering Refraction in Volume Graphics

Rodgman, David; Chen, Min

Regularised Anisotropic Nonlinear Diffusion for Rendering Refraction in Volume Graphics

Files

219-228.pdf (6.82 MB)

Date

2005

Authors

Rodgman, David
Chen, Min

Publisher

The Eurographics Association

Abstract

Rendering refraction in volume graphics requires smoothly distributed normals to synthesise good quality visual representations. Such refractive visualisation is more susceptible to noise in the data than visualisations that do not involve refraction. In this paper, we addresses the need for improving the continuity of voxel gradients in discretely sampled volume datasets using nonlinear diffusion methods, which was originally developed for image denoising. We consider the necessity for minimising unnecessary geometrical distortion, detail the functional specification of a volumetric filter for regularised anisotropic nonlinear diffusion (R-ANLD), discuss the further improvements of the filter, and compare the efficacy of the filter with an anisotropic nonlinear diffusion (ANLD) filter as well as a Gaussian filter and a linear diffusion filter. Our results indicate that it is possible to make significant improvements in image quality in refractive rendering without excessive distortion.

        @inproceedings{10.2312:vvg.20051030
,
booktitle = {Vision, Video, and Graphics (2005)
},
editor = {Mike Chantler
},
title = {{Regularised Anisotropic Nonlinear Diffusion for Rendering Refraction in Volume Graphics
}},
author = {Rodgman, David and 
Chen, Min
},
year = {2005
},
publisher = {The Eurographics Association
},
ISBN = {3-905673-57-6
},
DOI = {10.2312/vvg.20051030
}
}