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In many applications, a change of basis will allow different lattices to be utilized, but this is not always the case, because a change of basis is not always desirable or even possible.
Therefore, if we perform a change of basis before we represent the BRDF we should see slow variation along one axis, potentially leading to better compression.
The challange of dealing with the "moving" horizon in this new basis, however, might make implementing such a change of basis impractical.
Some particular examples are considered, in order to demonstrate the capability of the proposed algorithm, as well as its precision with a change of basis functions.
By exploiting some properties of the incomplete gamma function, it transpires that the change of basis can be achieved without dealing with any infinite expansions.
Because features in common BRDFs, including specular and retroreflective peaks, are aligned with the transformed coordinate axes, the change of basis reduces storage requirements for a large class of BRDFs.
Similar(37)
This relation between and or and is actually established by using the change-of-basis matrix W1/2 defined by Eq. (10).
The change-of-basis matrix W1/2 is selected so that the scalar product in (10) with l denoting the SH degree.
May 20 (Fri, 5 00 p.m). Change of grading basis deadline.
February 25 (Fri, 5 00 p.m). Change of grading basis deadline.
July 29 (Fri, 5 00 p.m). Change of grading basis deadline.
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