Background Plate Subtract
Updated: 25 Feb 2025
Add a Background Plate Subtract effect to an image.
Background Plate Subtract
Method #
This node remove the background from a video by taking a picture or supplying one of before, without the subject in it, then it keeps track of whats new when something moves in front.
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 Choose how the image blends with the scene. See Blend Modes for details.
Blend Mode (Alpha) Change how the generated effect blends with the parent image alpha.
Affected Channels Toggle which of the RGBA channels are affected by the effect.
Capture Background Plate Capture the background plate
Difference Threshold Difference between the 2 images
Difference Scale Difference Scale
Output Mask Show generated mask
Show Background Plate Show the used backround plane
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 | Choose how the image blends with the scene. See Blend Modes for details. |
| Blend Mode (Alpha) | Change how the generated effect blends with the parent image alpha. |
| Affected Channels | Toggle which of the RGBA channels are affected by the effect. |
| Capture Background Plate | Capture the background plate |
| Difference Threshold | Difference between the 2 images |
| Difference Scale | Difference Scale |
| Output Mask | Show generated mask |
| Show Background Plate | Show the used backround plane |
| Name | Description | Typical Input |
|---|---|---|
| Background Plate | TBC | TBC |
| Active | TBC | TBC |
| Blend Amount | TBC | TBC |
| Difference Threshold | TBC | TBC |
| Difference Scale | TBC | TBC |
| Capture Background Plate | TBC | TBC |
| Value Nodes | TBC | TBC |