Color Equalizer

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Color Equalizer

In: Material Filters/Scan Processing

Complex

Description

This node works like a high-quality Highpass for color differences. Where a normal Highpass removes saturation and can introduce unwanted sharpness, Color Equalizer works for evening out color differences and removing unwanted tints at a user-selectable scale.

This is very useful if a photo or scan has unwanted color differences, or a tint that you want removed. If you’ve used Highpass, this node should feel familiar.

The masking options are intended for removing very specific tints or for operating only in specific value ranges. Use these if you feel the effect is too broad.

Parameters

Inputs

• Input: Color Input
• Mask Input: Grayscale Input
  Mask slot used for masking the node’s effects. Only active when Mask is set to “Input”.

Parameters

• Input Tiled: False/TrueOptionally preserves tiling on edges.

• Radius: 0.0 - 50.0Sets equalising radius. A larger radius will only remove large color differences. This requires tweaking for every image.

• Bright/Dark Balance: 0.0 - 1.0Bias setting to leave or remove darker tints.

• Custom Color Variation: False/TrueEnables the ability to vary the effect towards a user-specified color.

• Color Variation
  Only active if Custom Color Variation is enabled. Settings allow you to select a tint offset to equalise towards.

  • Hue: 0.0 - 360.0
  • Chroma: 0.0 - 1.0
  • Luma: 0.0 - 1.0

• Mask Source: None, Image Average, Color Parameter, InputSet if any kind of masking should happen. Color Parameter enables the below additional settings, Input switches to a user-defined mask input.

• Mask
  This is only active with Color Parameter masking. Additional masking parameters to determine the mask based on the image itself. The below parameters allow you to precisely convert a tint to a binary mask on which the Equalisation is applied. Note that the Radius parameter’s effects can become much less pronounced when using these settings.

  • Color: (Color value)
  • Hue Range: 0.0 - 360.0
  • Chroma Range: 0.0 - 1.0
  • Luma Range: 0.0 - 1.0
  • Blur: 0.0 - 2.0
  • Smoothness: 0.0 - 2.0

Example Images

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