Method and system for scattered spherical harmonic approximation
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United States of America Patent
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Mar 18, 2014
Grant Date -
Jan 29, 2009
app pub date -
Jul 21, 2008
filing date -
Jul 25, 2007
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Abstract
A scattered spherical harmonic (SH) approximation method is proposed for pre-computation of SH coefficients at sampling vertices of an object to be rendered. The approach sparsely populates the object with a plurality of SH sampling vertices and uses the least squares approximation to calculate the SH coefficients at any (other) arbitrary point of the object by extrapolating from the computed SH coefficients at the SH sampling vertices.
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