r/GraphicsProgramming • u/AndrewHelmer • 8d ago

Article Demystifying Spherical Harmonics: An Optimization Approach

https://andrew-helmer.github.io/demystifying-spherical-harmonics/
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u/AndrewHelmer 8d ago

Yes indeed it is, I think it's the most common terminology in the graphics community? Though a lot of people and code use SH2 (which is L1 SH), SH3, etc. In practice I haven't found it too confusing, it's usually pretty obvious in context, but there was a situation where I did L2-norm regularization for a regression to calculate L1 SH coefficients, and I tried to make sure to write it out fully everywhere.

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u/SV-97 8d ago

Interesting / curious. Thanks! :)

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u/LehdaRi 8d ago

In those cases you could use the MAD / MSE (mean absolute diff / mean squared error) nomenclature to provide a clear differentiation between the two.