White Balance

Change the "white balance" of your source imagery.

This is not a technical transform and was more designed as creative transformation tool. Usually whitebalancing is applied on undemosaiced raw camera data while this node will operate on already debayered data.

Instructions

Install

• Copy/paste the content of WhiteBalance.nk in any nuke scene.
• That's it

Requirements

The tool use the following features :

• blink script but works on non-commercial versions >= 14.0

Reference

Default value for temperature and tint try to match the value of the illuminant E which should produce a "no-operation" result.

temperature

In Kelvin, lower produce a warmer look, higher a colder one.

tint

Deviation from the planckian locus, referred usually as "Duv". Scaled x3000 for conveniency. Negatives values produce a pink shift while positive value a green tint.

intensity

Strength of the effect applied as a simple linear interpolation. 0.0 means no effect.

show RGB coefficients

Fill the image with the R-G-B coefficient used to whitebalance the image. Useful for debugging or alternative workflow:

• provide a 1x1 pixels input in the node
• check show RGB coefficients
• reformat output to size of your image
• merge previous step with the actual image using a multiply blend mode

Developer

See the ./src/ folder for development instructions.