Notch Notch Manual 0.9.23
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Glow

Glow

Add a simple glow effect to an image.

image

Method #

This effect blurs the bright parts of the image over the darker parts of the image. The pixels of the incoming image that are brighter than the threshold are isolated and blurred, then added to the incoming image. This has the effect of blowing out the highlights of the image. This effect can be used to simulate overexposure of brightly lit objects.

The node is also resolution dependant, so increasing or decreasing the resolution will change the perceived blur amount.

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.
Blend AmountChanges the opacity of the new effect over the original image.
Blend Mode (RGB)Change how the generated effect blends with the parent image RGB.
Blend Mode (Alpha)Change how the generated effect blends with the parent image alpha.
IntensityThe intensity of the effect that is applied.
Blur ScaleHow far the blur should push out. This is multiplied by the distance of the pixel from the center of the image.
SoftnessControls the size of the blur highlight.
ThresholdThe luminance threshold at which a pixel will contribute to the effect.
Threshold ModeSelect how the threshold is calculated.
  • RGB : The glow effect is done on the rgb values individually.
  • Luminance : The glow effect is done on the luminance values for all objects in the scene.
Apply to Opaque Objects OnlyToggle whether the effect only applies to opaque objects.

Toggle which of the RGBA channels are affected by the effect.

Bias the shape the blur stretches in.

ParameterDetails
Blur Shaping XHow much the glow will blur in the x axis.
Blur Shaping YHow much the glow will blur in the y axis.

Shift the colour of the blur per channel.

ParameterDetails
Chromatic Shift RedControls how much of the glow is shifted towards red.
Chromatic Shift GreenControls how much of the glow is shifted towards green.
Chromatic Shift BlueControls how much of the glow is shifted towards blue.

Inputs

NameDescriptionTypical Input
Glow Mask ImageUse a mask image to control where the output is most or least affected by the effect, based on the mask images luminance.Image Plane
Affected ObjectsChange which objects are affects by the post effect. Deferred rendering must be enabled. By default, all objects are affected.3D Object
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