Threshold
Updated: 20 Feb 2025
Limit the colour in an image.
Threshold
Method #
This node limits the range of colour values in the image based on the luminance of each pixel. Useful for removing areas of an image which fall below a certain brightness level.
Parameters
These properties control the core behaviours of the node.
Parameter Details Active
Enables 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 Amount
Changes the opacity of the new effect over the original image.
Blend Mode (RGB)
Change how the generated effect blends with the parent image RGB.
Threshold
Change the luminance threshold for the effect to apply.
Falloff Range
Control the falloff of the threshold edge.
Falloff Power
Control the strength of the falloff.
Mode
Change how the threshold functions.
- Above : Anything below the threshold is omitted.
- Below : Anything above the threshold is omitted.
- Band : Anything outside the middle values are omitted, within the range specified by the threshold.
Output Mode
Change how the cut image outputs.
- Colour : Colour is output along with the image.
- Mask : A mask is generated based on the regions inside the threshold.
The properties control the time at which the node is active. See Timeline for editing time segments.
Parameter Details Duration
Control the duration of the node’s time segment.
- Composition Duration : Use the length of the composition for the node’s time segment duration.
- Custom : Set a custom duration for the node’s time segment.
Node Time
The custom start and end time for the node.
Duration (Timecode)
The length of the node’s time segment (in time).
Duration (Frames)
The length of the node’s time segment (in frames).
Time Segment Enabled
Set whether the node’s time segment is enabled or not in the Timeline.
Inputs
These properties control the core behaviours of the node.
| Parameter | Details |
|---|---|
| Active | Enables 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 Amount | Changes the opacity of the new effect over the original image. |
| Blend Mode (RGB) | Change how the generated effect blends with the parent image RGB. |
| Threshold | Change the luminance threshold for the effect to apply. |
| Falloff Range | Control the falloff of the threshold edge. |
| Falloff Power | Control the strength of the falloff. |
| Mode |
Change how the threshold functions.
|
| Output Mode |
Change how the cut image outputs.
|
The properties control the time at which the node is active. See Timeline for editing time segments.
| Parameter | Details |
|---|---|
| Duration |
Control the duration of the node’s time segment.
|
| Node Time | The custom start and end time for the node. |
| Duration (Timecode) | The length of the node’s time segment (in time). |
| Duration (Frames) | The length of the node’s time segment (in frames). |
| Time Segment Enabled | Set whether the node’s time segment is enabled or not in the Timeline. |
| Name | Description | Typical Input |
|---|---|---|
| Active | Enables or disables the effect. Disabling the effect means it will no longer compute, so disabling a node when not in use can improve performance. | Value |