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irradiance_lys [2014/11/28 05:56] adavies created |
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====== Irradiance ====== | ====== Irradiance ====== | ||
- | Short paragraph explaining the function of the Irradiance stuff here, along with a nice picture for eye candy. | + | Irradiance is diffuse reflection and is in Lys calculated as Lambertian diffuse reflection. |
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+ | This target can either be exported as an image or alternatively as 9 spherical harmonic coefficients. This provides a very efficient form of compression which works well with irradiance due to how blurred the appearance of irradiance is. | ||
===== Irradiance As A Spherical Harmonics Expansion ===== | ===== Irradiance As A Spherical Harmonics Expansion ===== | ||
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+ | ---- | ||
Lys allows you to export the irradiance as a nine coefficient spherical harmonic expansion per channel. | Lys allows you to export the irradiance as a nine coefficient spherical harmonic expansion per channel. | ||
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- | [{{:irradiance_vs_sh.png?nolink|Above we have set out renders((All HDRI photo based source images shown in the above were kindly provided by Marmoset. http://www.marmoset.co)) featuring results of irradiance vs spherical harmonics. The results using irradiance are on the left whereas the right shows the results obtained from spherical harmonics.}}] | + | [{{https://s3.amazonaws.com/docs.knaldtech.com/docuwiki/irradiance_vs_sh.png?nolink|Above we have set out renders((All HDRI photo based source images shown in the above were kindly provided by Marmoset. http://www.marmoset.co)) featuring results of irradiance vs spherical harmonics. The results using irradiance are on the left whereas the right shows the results obtained from spherical harmonics.}}] |