Notch Notch Manual 0.9.23
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Key Colour Mask

Key Colour Mask

Generate a mask for an image using a specified colour.

image

Method #

This node creates a keyed mask for a video from a specified colour. Generally useful for Green screen or blue screen video, but as the colour can be manually specified, any colour can be used as a colour key source. After some further touch up, the key can be further improved to being of reasonably good quality, but for the best quality, use the Chroma Key node.

Parameters

These properties control the core behaviours of the node.

ParameterDetails
ActiveEnables or disables the effect. Disabling the effect means it will no longer compute, so disabling a node when not in use can improve performance.
Key ColourChoose the colour to be keyed out of the image.
Output Mask OnlyToggle whether to only output the greyscale mask.
Invert MaskInvert the greyscale output mask.
Blend ModeChoose how the image blends with the scene. See Blend Modes for details.
Process HSVToggles whether processing is done in HSV colour space.
Colour DifferenceThe threshold of tolerance of difference between key and source pixel colours, inside which the pixel is considered visible / part of the mask.
Hue DifferenceControl the difference in hue.
Saturation DifferenceControl the difference in saturation.
Luminance DifferenceControl the difference in luminance.

Inputs

NameDescriptionTypical Input
ActiveEnables or disables the effect. Disabling the effect means it will no longer compute, so disabling a node when not in use can improve performance.Envelope Modifier