Title:	Adaptive filtering for progressive Monte Carlo image rendering
Authors:	Suykens, Frank Willems, Yves D.
Citation:	Journal of WSCG. 2000, vol. 8, no. 1-3.
Issue Date:	2000
Publisher:	Václav Skala - UNION Agency
Document type:	článek article
URI:	http://wscg.zcu.cz/wscg2000/wscg_2000_program.htm http://hdl.handle.net/11025/15967
ISSN:	1213-6972 (print) 1213-6980 (CD-ROM) 1213-6964 (online)
Keywords:	globální osvětlení;Monte Carlo;odhad hustoty;obousměrný path tracing;filtrace obrazu
Keywords in different language:	global illumination;Monte Carlo;density estimation;bidirectional path tracing;image filtering
Abstract in different language:	Image filtering is often applied as a post-process to Monte Carlo generated pictures, in order to reduce noise. In this paper we present an algorithm based on density estimation techniques that applies an energy preserving adaptive kernel filter to individual samples during image rendering. The used kernel widths diminish as the number of samples goes up, ensuring a reasonable noise versus bias trade-off at any time. This results in a progressive algorithm, that still converges asymptotically to a correct solution. Results show that general noise as well as spike noise can effectively be reduced. Many interesting extensions are possible, making this a very promising technique for Monte Carlo image synthesis.
Rights:	© Václav Skala - UNION Agency
Appears in Collections:	Volume 8, number 1-3 (2000)

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