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Color & Image ProcessingAdvanced

LUTCubeCreator

3D LUT cube image generator

Generates a LUT cube test image used for creating, baking or analyzing 3D color transforms.

LUTCubeCreator
DaVinci Resolve · Fusion

LUTCubeCreator produces a structured representation of a 3D color cube. A color-processing chain can transform that cube so the resulting relationship can be captured or analyzed as a LUT.

Overview

What LUTCubeCreator does

LUTCubeCreator produces a structured representation of a 3D color cube. A color-processing chain can transform that cube so the resulting relationship can be captured or analyzed as a LUT.

Mental model

Feed every possible sampled color through the intended transform in a structured cube so the transform can later be reconstructed as a lookup table.

Common uses

Bake a color transform into a LUT
Generate a reference cube for LUT analysis
Test whether a look is LUT-compatible
Build technical color pipeline tools

Flow anatomy

Inputs & outputs

The port structure shows how this node fits into a Fusion graph.

Generator node — no image input is required.
LUTCubeCreator
Fusion node

Output

The processed result from this node.

Inspector

Important parameters

Start with these controls before reaching for more complicated workarounds.

Type

Chooses Horizontal, Vertical or Rect cube layout.

Horizontal

Generates a horizontally arranged cube representation.

Vertical

Generates a vertically arranged cube representation.

Rect

Generates a rectangular cube layout.

Size

Controls cube resolution and therefore LUT sampling density.

Settings

Provides normal node processing and blend controls.

Practical setup

A reliable workflow

  1. 1

    Choose a cube layout compatible with the downstream analyzer.

  2. 2

    Set the required cube size.

  3. 3

    Pass the cube through only the color operations that should be baked.

  4. 4

    Analyze or export the transformed cube.

  5. 5

    Validate the resulting LUT on independent test imagery.

Typical node chain
Input
LUTCubeCreator
Output

Examples

Where this node fits in real work

Bake a look

Pass the cube through a grading chain and analyze the output.

LUTCubeCreatorColor LookLUT Analyzer

Compatibility test

Compare transformed imagery against the LUT rebuilt from the cube.

CubeTransformLUTCompare

Troubleshooting

Common mistakes

Including spatial effects that a 3D LUT cannot represent
Using too small a cube for a demanding transform
Changing layout between creator and analyzer

Production notes

Practical tips

A LUT can encode color mapping, not blur, grain, masks or spatially varying effects.
Use representative test charts after export to verify the baked result.

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