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	<title>Simon&#039;s Graphics Blog &#187; Spherical Harmonics</title>
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		<title>Spherical Harmonic Basis Functions</title>
		<link>http://www.sjbrown.co.uk/2004/10/16/spherical-harmonic-basis/</link>
		<comments>http://www.sjbrown.co.uk/2004/10/16/spherical-harmonic-basis/#comments</comments>
		<pubDate>Sat, 16 Oct 2004 19:00:43 +0000</pubDate>
		<dc:creator>Simon Brown</dc:creator>
				<category><![CDATA[C++]]></category>
		<category><![CDATA[Spherical Harmonics]]></category>

		<guid isPermaLink="false">http://sjbrown.co.uk/blog/?p=30</guid>
		<description><![CDATA[Spherical harmonic basis functions can be defined in various different ways depending on your derivation or normalisation requirements. This page defines the real-valued set I use, along with algorithms and code snippets for irradiance estimation and run-time evaluation. Derivation Real-valued spherical harmonics are defined in terms of their complex analogues. This derivation produces the signless [...]]]></description>
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