Thread: [Algorithms] New research in SH rotations.
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From: Robin G. <rob...@gm...> - 2009-09-21 17:25:38
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I received in the mail this morning a print of a paper from a researcher in "Ambisonics" (the science of multidirectional or spherical sound field recording and playback), Michael Chapman, who claims to have new insight into producing rotation matrices for Spherical Harmonics based on his research into their symmetries: http://ambisonics.iem.at/symposium2009/proceedings/ambisym09-chapman-shsymmetries.pdf/at_download/file Along with this was a reference to a recent 2006 paper on efficient SH rotations from Pinchon et al where they claim to have improved on Kautz, Sloan and Snyder's methods not just in generation but in compact storage as well: http://www.math.univ-toulouse.fr/Archive-MIP/publis/files/06.30.pdf Just in case anyone still cares about efficient rotation of SH functions. - Robin Green. |
From: Grégory J. <g....@fr...> - 2009-09-22 07:01:39
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This is very interesting indeed, thanks for pointing it out ! I wish I had some time to implement the paper and compare the performance/results to my existing implementation ! Grégory Jaegy -----Message d'origine----- De : Robin Green [mailto:rob...@gm...] Envoyé : lundi 21 septembre 2009 18:59 À : Game Development Algorithms Objet : [Algorithms] New research in SH rotations. I received in the mail this morning a print of a paper from a researcher in "Ambisonics" (the science of multidirectional or spherical sound field recording and playback), Michael Chapman, who claims to have new insight into producing rotation matrices for Spherical Harmonics based on his research into their symmetries: http://ambisonics.iem.at/symposium2009/proceedings/ambisym09-chapman-shsymme tries.pdf/at_download/file Along with this was a reference to a recent 2006 paper on efficient SH rotations from Pinchon et al where they claim to have improved on Kautz, Sloan and Snyder's methods not just in generation but in compact storage as well: http://www.math.univ-toulouse.fr/Archive-MIP/publis/files/06.30.pdf Just in case anyone still cares about efficient rotation of SH functions. - Robin Green. ---------------------------------------------------------------------------- -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ GDAlgorithms-list mailing list GDA...@li... https://lists.sourceforge.net/lists/listinfo/gdalgorithms-list Archives: http://sourceforge.net/mailarchive/forum.php?forum_name=gdalgorithms-list |
From: Robin G. <rob...@gm...> - 2009-09-22 16:12:02
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Just after sending that GDAlgorithms post, I also found that the latest September 2009 edition of the ACM Journal of Computational Physics has a "Short Note" on SH rotations. I don't have the logins to read that yet unfortunately, but it cites the previous papers. http://portal.acm.org/citation.cfm?id=1563054.1563203&coll=GUIDE&dl=GUIDE - Robin Green. 2009/9/22 Grégory Jaegy <g....@fr...>: > This is very interesting indeed, thanks for pointing it out ! > > I wish I had some time to implement the paper and compare the > performance/results to my existing implementation ! > > Grégory Jaegy |