Channel
Selects the channel used to evaluate the restoration.
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Rest
Channel-based restoration against a reference floor
Restores or levels part of an image relative to a user-defined floor line, selected image channel and Up/Under processing direction.
This tool belongs to the Krokodove set integrated into DaVinci Resolve 21 and Fusion Studio 21. See the complete Krokodove node list and the comparison with native Fusion tools.
Rest
DaVinci Resolve · Fusion
Rest is a specialized restoration tool that evaluates a selected channel against a floor defined by two points. Amount controls strength, Floor Left and Floor Right define the reference plane, and Position chooses whether the correction acts above or below it.
Overview
What Rest does
Rest is useful for localized technical repair where a stable reference level can be described by a line across the image. Instead of painting a replacement patch, the tool derives its operation from the selected channel and the floor geometry.
The channel choice is critical because luminance, RGB and alpha can describe very different structures. Floor Left and Floor Right should follow the reference region as accurately as possible before Amount is increased.
Up and Under let you choose which side of the reference should receive the restoration. This makes Rest useful for structured cleanup, matte repair and channel-driven correction rather than general-purpose retouching.
Mental model
Think of Rest as a repair tool built around a two-point reference floor: choose what channel to measure, draw the floor, choose a side, then control the correction strength.
Common uses
Repair structured channel variations
Level an area against a reference boundary
Build technical matte corrections
Restore a region above or below a known floor line
Create a controlled preprocessing pass before further cleanup
Flow anatomy
Inputs & outputs
The port structure shows how this node fits into a Fusion graph.
Image Input
Source image for the operation.
Effect Mask
Optional mask that limits where the node affects the image.
Rest
Fusion node
Image Output
The processed result from this node.
Inspector
Important parameters
Start with these controls before reaching for more complicated workarounds.
Luminance
Applies the Rest operation using image luminance as the working component.
Red / Green / Blue
Sets the RGB components used by the Rest tool’s color output.
Use channel-specific controls when the operation should not affect all components equally.
Alpha
Adjusts the alpha channel.
Use channel-specific controls when the operation should not affect all components equally.
Amount
Controls the strength of the restoration.
Floor Left
Sets the left point of the reference floor.
Floor Right
Sets the right point of the reference floor.
Position
Sets position for Rest.
Up
Applies the operation to values above the reference line.
Under
Applies the operation to values below the reference line.
Practical setup
A reliable workflow
- 1
Choose the channel that best represents the defect.
- 2
Place Floor Left and Floor Right along the stable reference boundary.
- 3
Choose Up or Under according to the side that should be repaired.
- 4
Raise Amount gradually while viewing the affected area at 100%.
- 5
Use a mask or downstream cleanup if the correction should be more local.
Typical node chain
Image→
Channel + Floor→
Rest→
Repaired Image
Examples
Where this node fits in real work
Channel-based repair
Use luminance and a floor line to level a structured artifact.
MediaInRestColorCorrectorMediaOut
Matte cleanup
Repair one side of an alpha-defined boundary before matte processing.
Matte SourceRestMatteControlMerge
Troubleshooting
Common mistakes
Choosing a channel that does not represent the defect
Increasing Amount before the floor line is aligned
Selecting Up when the intended repair region is Under, or vice versa
Expecting Rest to replace detailed paint cleanup
Production notes
Practical tips
Test channels quickly before fine-tuning the floor.
Zoom to 100% when judging whether restoration introduces a visible seam.
Use Rest as one technical stage in a cleanup chain rather than forcing it to solve every artifact.
Related nodes