Hi,
I am trying to convert an older Shake macro to a Nuke gizmo.
In doing that I discovered that a biasedGain() function was used in Shake for a parameter inside the macro.
As far as I know there is no direct equivalent in Nuke to this function. But given Nuke's Color > Math > Expression node I am quite sure that one can reproduce the default
curve for biasedGain with coefficients of 0.5 and 0.5 (the first, according to Shake's docs is the bias or sharpness of the curve, the second is the (centroid) offset taken into account in the biasedGain).
So I am searching for pointers to formulas that recreate a gain curve as used in general image and signal processing theory, so that I may play around with
biasing and offsetting this default curve with arbitrary coefficients in order to recreate the effect.
Does anyone know the fomula for a standard gain operation or even better for the biasedGain operation as defined in Shake?
Thanks for reading!
Andre