How can I apply this color formula to the image?

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  08 August 2014
How can I apply this color formula to the image?

Hi there.

I'm trying to apply this formula to the imagen to achieve a highlight compression effect, the HDR Highlight compression that comes with after effects does not work as expected, this is the formula:

r1 * (1+r1/(n1*n1))/(1+r1)
g1 * (1+g1/(n1*n1))/(1+g1)
b1 * (1+b1/(n1*n1))/(1+b1)

Thanks in advance!
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