Color Spill(カラースピル)ノード

Color Spill(カラースピル)ノード。

The Color Spill node is used to suppress unwanted color casts—typically green or blue; caused by light reflecting from a chroma key (green or blue screen) onto the subject.

This "spill" is common in compositing workflows and can give a subject an unnatural colored tint. The node reduces the influence of the selected color channel, removing the excess and restoring a more natural appearance.

入力

Image(画像)

The input RGBA image to be processed.

Fac

Blend factor for how strongly the node affects the image. A value of 1.0 fully applies the effect; lower values blend with the original.

Limit Strength

Specifies the limiting strength of the limit channel.

Spill Strength

If enabled, the spill strength for each color channel can be specified. If disabled, the spill channel will have a unit scale, while other channels will be zero.

Strength(強さ)

Specifics the spilling strength of each color channel.

Properties(プロパティ)

Despill Channel(スピル除去チャンネル)

Selects which channel to reduce:

R:

Suppress red spill.

G:

Suppress green spill (common for green screens).

B:

Suppress blue spill (common for blue screens).

Algorithm(アルゴリズム)

Chooses the method for spill reduction:

Simple(シンプル):

Compares the Limiting Channel channel to the others and reduces it if it is higher.

Average(平均):

Uses the average of the other two channels to set the limit for the despill channel.

Limiting Channel Simple

When using the Simple algorithm, you can choose which channel(s) to use as a reference for limiting:

R:

Use red as the reference.

G:

Use green as the reference.

B:

Use blue as the reference.

出力

Image(画像)

チャンネルが修正された画像。

Mango Open Movie の画像に本ノードを適用した結果。

../../../_images/compositing_types_matte_color-spill_example-before.jpg

適用前:緑の境界線と緑の反射。

../../../_images/compositing_types_matte_color-spill_example-after.jpg

適用後:不要な緑を除去。