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<h3><b><font size=3 face="Times New Roman"><span style='font-size:12.0pt;
font-weight:normal'>*** Apologies for cross-posting ***<o:p></o:p></span></font></b></h3>
<h3><b><font size=4 face="Times New Roman"><span style='font-size:13.5pt'>"Global
Illumination for the Masses" </span></font></b><st1:PersonName w:st="on"><font
size=3><span style='font-size:12.0pt;font-weight:normal'>Neil Gatenby</span></font></st1:PersonName><font
size=3><span style='font-size:12.0pt;font-weight:normal'>, Lightwork Design</span></font><font
size=3><span style='font-size:12.0pt'><o:p></o:p></span></font></h3>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>22nd
February 2008, 2-3pm GMT, The <st1:PlaceType w:st="on">University</st1:PlaceType>
of <st1:PlaceName w:st="on">Manchester</st1:PlaceName>, Room 1:10, <st1:place
w:st="on"><st1:PlaceName w:st="on">Kilburn</st1:PlaceName> <st1:PlaceType
w:st="on">Building</st1:PlaceType></st1:place>. Part of the ACM SIGGRAPH Manchester
Professional Chapter seminar series. <a href="http://manchester.siggraph.org/">http://manchester.siggraph.org/</a>
and broadcast through Access Grid.<o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Global
Illumination (GI) algorithms came to fruition in the Graphics labs of <st1:country-region
w:st="on">USA</st1:country-region>, Europe, <st1:place w:st="on"><st1:country-region
w:st="on">Japan</st1:country-region></st1:place>, and beyond, during the 1980s
and 1990s. The researchers who developed the algorithms had expert knowledge of
the underlying physics, and an even more expert knowledge of how their own
software behaved (and misbehaved!). <o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Ten years
ago, only the most specialised applications contained GI rendering algorithms -
those targeted at architects, or automotive manufacturers, or digital imagery
for movies/advertising. The number of seats was always small, and the price per
seat was always high. <o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Radiosity,
ray tracing and photon mapping, final gathering, irradiance caches and the use
of MC and QMC importance sampling may all appear on an undergraduate graphics
course in 2008, but they are still not the kind of thing one overhears being
discussed in the average pub, or cafe! <o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Yet
today, it is hard to find AEC or MC<st1:PersonName w:st="on">AD</st1:PersonName>
software that does not contain such algorithms. Many of the pubs and cafes
where the algorithms are not discussed contain customers who have kitchen (or
bathroom, or garden) design software on their PC/Mac at home. They might not
use it very often, nor explore its limits when they do use it, but use it they
do. There are many millions of such users, and none of them has paid very much
for the software in question. <o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>This talk
will discuss the difficulties and opportunities that arise when designing GI
software for such a market place, and will outline some of the shortcuts and
tricks that are commonly employed by those writing the code. <o:p></o:p></span></font></p>
<div style='mso-element:para-border-div;border:none;border-bottom:solid windowtext 1.0pt;
padding:0cm 0cm 1.0pt 0cm'>
<p style='border:none;padding:0cm'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><img border=0 width=238 height=343 id="_x0000_i1025"
src="cid:image001.jpg@01C86CDD.C697D2B0"><o:p></o:p></span></font></p>
<p style='border:none;padding:0cm'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</div>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Anyone
wishing to view a seminar via Access Grid should note the following. Please
check the Jabber room shortly before the start of the seminar to find out
whether IGPix or ScreenStreamer is to be used.<o:p></o:p></span></font></p>
<p><em><i><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><!--
<p><em>Virtual venue</em>: University of Manchester (1.10)</p>
-->Jabber room</span></font></i></em>: university-of-manchester-(1.10)(sam.ag.manchester.ac.uk)@conference.mcs.anl.gov<o:p></o:p></p>
<p><em><i><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><!--<p><em>IGPix</em>: <a href="http://roberts.agsc.man.ac.uk/igpix/uom110">roberts.agsc.man.ac.uk/igpix/uom110</a></p>-->ScreenStreamer</span></font></i></em>:
<o:p></o:p></p>
<ul type=disc>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Times New Roman"><span
lang=EN-GB style='font-size:12.0pt'>Preferably use ScreenStreamer software
- go to <a
href="http://www.memetic-vre.net/software/ScreenStreamer/ScreenStreamer.php">http://www.memetic-vre.net/software/ScreenStreamer/ScreenStreamer.php</a>,
and select room "<st1:place w:st="on"><st1:PlaceType w:st="on">University</st1:PlaceType>
of <st1:PlaceName w:st="on">Manchester</st1:PlaceName></st1:place>
(1.10)" from the AGSC section. Grab the screen feed (by clicking on
it) from the screenstreamer window and resize it - more info can be found
on <a href="http://www.memetic-vre.net/software/ScreenStreamer/">http://www.memetic-vre.net/software/ScreenStreamer</a>.
<o:p></o:p></span></font></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Times New Roman"><span
lang=EN-GB style='font-size:12.0pt'>Alternatively, the screenshot (not
animated) can be accessed at <a href="http://192.150.184.66:7890">http://192.150.184.66:7890</a>
(this IP might change for some sessions - please check Jabber). <o:p></o:p></span></font></li>
</ul>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>For
technical assistance regarding the Access Grid, please contact the <a
href="http://www.agsc.ja.net/">Access Grid Support Centre</a>. Non-UK Access
Grid nodes are advised to contact the <a href="http://www.agsc.ja.net/">Access
Grid Support Centre</a> to check connectivity before the date of the seminar.<o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>If
possible, please let us know in advance if your site intends to join a seminar.<o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Regards, Martin<o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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