Gamito, M.N. and Maddock, S.C. (2006) Anti-aliasing with stratified B-spline filters of arbitrary degree. Computer Graphics Forum, 25 (2). pp. 163-172. ISSN 1467-8659
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Abstract
A simple and elegant method is presented to perform anti-aliasing in raytraced images. The method uses stratified sampling to reduce the occurrence of artefacts in an image and features a B-spline filter to compute the final luminous intensity at each pixel. The method is scalable through the specification of the filter degree. A B-spline filter of degree one amounts to a simple anti-aliasing scheme with box filtering. Increasing the degree of the B-spline generates progressively smoother filters. Computation of the filter values is done in a recursive way, as part of a sequence of Newton-Raphson iterations, to obtain the optimal sample positions in screen space. The proposed method can perform both anti-aliasing in space and in time, the latter being more commonly known as motion blur. We show an application of the method to the ray casting of implicit procedural surfaces.
| Item Type: | Article |
|---|---|
| Copyright, Publisher and Additional Information: | �© 2006 The Authors. This is an author produced version of a paper published in Computer Graphics Forum. Uploaded in accordance with the publisher's self-archiving policy. |
| Keywords: | anti-aliasing, B-spline filter, motion blur, raytracing, stratified sampling |
| Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Computer Science (Sheffield) |
| Depositing User: | Sherpa Assistant |
| Date Deposited: | 28 Jan 2008 16:53 |
| Last Modified: | 08 Feb 2013 16:55 |
| Published Version: | http://dx.doi.org/10.1111/j.1467-8659.2006.00932.x |
| Status: | Published |
| Publisher: | Blackwell Publishing on behalf of the European Association for Computer Graphics |
| Refereed: | Yes |
| Identification Number: | 10.1111/j.1467-8659.2006.00932.x |
| URI: | http://eprints.whiterose.ac.uk/id/eprint/3565 |
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