Implement "Luminous Flux" computation.

[KelSolaar]

References

• http://en.wikipedia.org/wiki/Luminosity_function
• http://whatis.techtarget.com/definition/luminous-flux
• http://www.dnp-screens.com/DNP08/Technology/Basic-Visual/What-is-light/Luminous-flux.aspx

[canavandl]

I'm interested in implementing this, but i had a few questions about how to best do it. I see that generating all of the relevant lefs as already been implemented, so all that's left is writing the general luminous flux function.

It's unclear to me how to best implement the integration by parts to do the inner product. As far as I'm aware, numpy doesn't have a general integration function that runs a length n-1 array of the integration pieces (please correct me if I'm wrong). I could write something add something to .colour/algebra/common.py but I don't want to assume that everybody would want to use trapezoidal integration. I could add the options of left-rule, right-rule, etc. but that gets busy quick.

I'd appreciate any advice.

[KelSolaar]

Hi Luke,

I haven't checked in details but you should be able to avoid the integration by doing a summation like we do it for spectral conversion. Just found this link, I think it should help: http://hyperphysics.phy-astr.gsu.edu/hbase/vision/lumpow.html