colorchecker
Description
Allows the user to locate a GretagMacbeth ColorChecker Classic in an image by specifying control points, move those control points, and generate ROIs for each patch.
Once the control points are placed, Generate ROIs builds one ROI per patch.
- ROI Generation Mode - Shape (the default) fills each patch's outline exactly as projected by the perspective transform - reliable even for small or heavily-distorted targets. Flood Fill instead grows a region outward from each patch's centre, following similar-coloured pixels.
- ROI scale - only used in Shape mode. Scales the projected patch outline about its centre, shown live as a preview before you click Generate.
- Flood Fill Tolerance - only used in Flood Fill mode. The maximum brightness difference a pixel may have from the fill's running average and still be included; too low and the fill stops almost immediately, too high and it may bleed into neighbouring patches.
- ROI Draw Mode / ROI Label Size - how the generated ROIs are annotated on the canvas.
Connections
Inputs
| Index | Name | Type | Desc |
|---|---|---|---|
| 0 | img | img | (none) |
Outputs
| Index | Name | Type | Desc |
|---|---|---|---|
| 0 | (none) | img | (none) |
Parameters
This node has no parameters.
Automatically generated by generate_autodocs.py
Date: 2026-09-16T16:31:48.206090