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Warp wrote:
> Gilles Tran <gil### [at] agroparistech fr> wrote:
>> In addition to Thorsten's links, here's an explanation about how it's done
>> in Mental Ray :
>>
http://toi.bk.tudelft.nl/toi-pedia/index.php?title=Rendering_Mental_Ray:_Tone_mapping
>
> Am I understanding correctly that "tone mapping" is nothing else than
> a function which takes one parameter, namely a brightness value (eg. of a
> color channel), and returns a brigthness value (usually the input value
> multiplied by some function)?
>
> Could it also be a function taking three parameters, namely the red,
> green and blue components of the color, and returning a vector?
No, it can be much more complex than that. Go "Up" twice on the page whose
link I posted. It is actually from a dissertation discussing various
functions, some of which require more than a handful of parameters.
Thorsten
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