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Sanvitalia multispectral

Dr Klaus Schmitt

Well-known member
Sanvitalia flower in human vision, reflected UV, simulated butterfly and bee vision (left to right, top to bottom) - click link to see all images

163189538.qjwerWTW.BidensVISUVBVBV20162a_c.jpg
 

Asher Kelman

OPF Owner/Editor-in-Chief
Klaus,

What is the logic and what is just artistic choice in showing the simulated colors here?

Asher
 

Dr Klaus Schmitt

Well-known member
Klaus,

What is the logic and what is just artistic choice in showing the simulated colors here?

Asher

See my following answer....

Klaus,

How do you know the butterfly and bee see this way ? Based on experiments I suppose...

And how you do it ?

We don't "this way", but we do know which spectral range they can see (based on neuronal and behavioural experiments...).
Humans: https://en.wikipedia.org/wiki/Trichromacy
Bees are Trichromats too, but see UV, Blue, Green and hence no red
Butterflies, birds, fish,.. https://en.wikipedia.org/wiki/Tetrachromacy
so they can see UV, Blue, Green, Red i.e. have a four dimensional color space.

Overall: https://en.wikipedia.org/wiki/Evolution_of_color_vision

What I have done is a well known method from aerial exploration, the mapping of invisual to us spectral ranges into our
color space - "color mapping" and of course some arbitrarily chosen colors for those invisible "colors", this is the "artsy part" of it.
But I have done it in a way which isn't contradictory (i.e. I don't use red for UV, as bees cannot see red, so that methods creates
at least subconciously a mess in viewers brains usually...)

Here about color mapping: http://www.mathworks.com/tagteam/81137_92238v00_RainbowColorMap_57312.pdf
 
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