ColorSuppress node — Natron 2.5.0 documentation

# ColorSuppress node

This documentation is for version 1.0 of ColorSuppress (net.sf.openfx.ColorSuppress).

## Description

Remove a color or tint from an image.

The effect can either modify the color and/or extract the amount of color and store it in the alpha channel. It can be used to fix the despill or extract a mask from a color.

## Inputs

Input | Description | Optional
--- | --- | ---
Source |  | No
Mask |  | Yes

## Controls

Parameter / script name | Type | Default | Function
--- | --- | --- | ---
Red / `redSuppress` | Double | 0 | Fraction of red to suppress.
Green / `greenSuppress` | Double | 0 | Fraction of green to suppress.
Blue / `blueSuppress` | Double | 0 | Fraction of blue to suppress.
Cyan / `cyanSuppress` | Double | 0 | Fraction of cyan to suppress.
Magenta / `magentaSuppress` | Double | 0 | Fraction of magenta to suppress.
Yellow / `yellowSuppress` | Double | 0 | Fraction of yellow to suppress.
Output / `outputMode` | Choice | Image | Suppress mode. Image (image): Suppress color from the image. Alpha (alpha): Only store the suppress mask in the Alpha channel. Image and Alpha (both): Suppress the color from the image and store the suppress mask in the Alpha channel.
Preserve Luminance / `preserveLuma` | Boolean | Off | Preserve image luminosity.
Luminance Math / `luminanceMath` | Choice | Rec. 709 | Formula used to compute luminance from RGB values. Rec. 709 (rec709): Use Rec. 709 (0.2126r + 0.7152g + 0.0722b). Rec. 2020 (rec2020): Use Rec. 2020 (0.2627r + 0.6780g + 0.0593b). ACES AP0 (acesap0): Use ACES AP0 (0.3439664498r + 0.7281660966g + -0.0721325464b). ACES AP1 (acesap1): Use ACES AP1 (0.2722287168r + 0.6740817658g + 0.0536895174b). CCIR 601 (ccir601): Use CCIR 601 (0.2989r + 0.5866g + 0.1145b). Average (average): Use average of r, g, b. Max (max): Use max or r, g, b.
(Un)premult / `premult` | Boolean | Off | Divide the image by the alpha channel before processing, and re-multiply it afterwards. Use if the input images are premultiplied.
Invert Mask / `maskInvert` | Boolean | Off | When checked, the effect is fully applied where the mask is 0.
Mix / `mix` | Double | 1 | Mix factor between the original and the transformed image.