color lookup curve inverse

Hey guys,

I was wondering, when you want to undo/inverse a gamma node of say a value of 2, you could get a second gamma node with a value of 1/2=0.5 and you would have your original image again.

Now i want to do this with a color lookup. There’s two points plotted on the curve. Now i want to inverse/undo that operation with another lookup curve. Is there an easy way to do this?



set cut_paste_input [stack 0]
version 6.0 v5
push $cut_paste_input
ColorLookup {
 lut {master {curve C 0 x0.1598999947 0.092 x0.4950000048 0.696 x1 1}
  red {}
  green {}
  blue {}
  alpha {}}
 name lookup
 selected true
 xpos 1773
 ypos 4713

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