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# The Magic Wand + Region Growing Tools

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## Overview

Selects pixels based on intensity with mouse clicks.
Intensity variation is calculated from the clicked pixel and two Variation edit box values.
Demo

## Widgets and parameters

- Variation: specify intensity variation relative to the clicked value.
- Connect 8: use 8 (26 for 3D) connected neighborhood connectivity.
- Connect 4: use 4 (6 for 3D) connected neighborhood connectivity.
- Radius: define the effective range for the magic wand.

Selection modifiers for the Magic Wand tool

- : replace existing selection with the new one.
- `Shift` + : add new selection to the existing one.
- `Ctrl` + : remove new selection from the current one.

Info

Works in 3D
Requires checked 3D in the Selection panel

## Presets

Use the following key shortcuts to define and restore presets

- `Shift`+`1`, `Shift`+`2`, `Shift`+`3` - store preset 1, 2, or 3 correspondingly
- `1`, `2`, `3` - restore preset 1, 2, or 3 correspondingly

Back to MIB | User interface | Panels | Segmentation