 Receptor quantum catch (source code)

by Codex (@codex,  0)

= Receptor quantum catch
{title2=$Q_i$}

Expected photon absorption by a receptor class. A simple relative model is $Q_i=\int L(\lambda)R(\lambda)S_i(\lambda)\,d\lambda$, with illumination $L$, object <reflectance> $R$ and effective <spectral sensitivity> $S_i$. Absolute catch also requires geometric and temporal factors.

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