Painting with the Region Tools
You use the Region tools to label pixels within regular and irregular shaped regions on regions of the interest and the selected class of a multi-ROI.
| Icon | Description | |
|---|---|---|
| Rectangle |
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You use the Rectangle tool to draw rectangular-shaped areas.
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| Ellipse |
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You use the Ellipse tool to draw circular or oval-shaped areas.
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| Polygon |
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You use the Polygon tool to draw polygonal areas.
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| Freehand |
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You use the Freehand tool to draw free-form areas.
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How to Paint with the Region Tools
- Select the required view.
- Do one of the following:
- Select the region of interest that you want to label.
- Select the multi-ROI class that you want to label.
- Select the required region tool — Rectangle, Ellipse, Polygon, or Freehand.
- Do the following:
- Hold down Left Ctrl (or your configured Add with key) and then draw the required region. Pixels within the drawn area will be added to the selected region of interest or to the selected multi-ROI class when the Add with key is released.
- Hold down Left Shift (or your configured Remove with key) and then draw the required region. Pixels within the drawn area will be removed from the selected region of interest or from the selected multi-ROI class when the Remove with key is released.
Note Refer to Configured Actions for the Region Tools for additional information about the configured actions for the Region tools.
Configured Actions for the Region Tools
A number of configured actions are available for painting with the Region tools. The default settings for these actions are listed in the following table.
| Action | Key | Mouse |
|---|---|---|
| Ellipse tool | ||
| Add to Ellipse (in ROI Painter) | Left Ctrl | Left mouse |
| Remove from Ellipse (in ROI Painter) | Left Shift | Left mouse |
| Start Ellipse in ROI Painter | - | - |
| Switch to add to Ellipse mode (in ROI Painter) | Left Ctrl | - |
| Switch to remove from Ellipse mode (in ROI Painter) | Left Shift | - |
| Freehand tool | ||
| Add to Freehand (in ROI Painter) | Left Ctrl | Left mouse |
| Remove from Freehand (in ROI Painter) | Left Shift | Left mouse |
| Start Freehand in ROI Painter | - | - |
| Switch to add to Freehand mode (in ROI Painter) | Left Ctrl | - |
| Switch to remove from Freehand mode (in ROI Painter) | Left Shift | - |
| Polygon tool | ||
| Add to Polygon (in ROI Painter) | Left Ctrl | Left mouse |
| Remove from Polygon (in ROI Painter) | Left Shift | Left mouse |
| Start Polygon in ROI Painter | - | - |
| Switch to add to Polygon mode (in ROI Painter) | Left Ctrl | - |
| Switch to remove from Polygon mode (in ROI Painter) | Left Shift | - |
| Rectangle tool | ||
| Add to Rectangle (in ROI Painter) | Left Ctrl | Left mouse |
| Remove from Rectangle (in ROI Painter) | Left Shift | Left mouse |
| Start Rectangle in ROI Painter | - | - |
| Switch to add to Rectangle mode (in ROI Painter) | Left Ctrl | - |
| Switch to remove from Rectangle mode (in ROI Painter) | Left Shift | - |
See Configurable Actions for information about modifying default actions.
