Cancer Imaging Phenomics Toolkit (CaPTk)  1.6.0
Label Annotation/Drawing Panel

This panel provides the ability to annotate Regions of Interest (ROIs) and save them as masks.

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Drawing functions
While drawing, you can switch across the image volumes loaded in CaPTk, by pressing the numbers 1-9 on your keyboard.

There are the following controls underneath the Drawing tab:

Button/Box Description
View Mode Switch from drawing mode (which is enabled when either Near or Far ROI drawing is selected) to normal viewing mode.
Line Draw a line of selected label color and size.
Rectangle Draw a rectangle of selected label color and size.
Circle Draw a circle of selected label color and size.
Free-Hand Draw selected label using brush of specified size using mouse left button drag.
Fill Fill a closed boundary with selected label - uses ITK's connected component filter.
Eraser Erases all labels using brush of specified size.
Label Selector Label selector between 1-9.
Marker Size A square marker of specific voxel size.
Marker Opacity Sets the opacity of the marker between 0.0 (transparent) and 1.0 (opaque).
Clear Selected Label Remove selected label completely from the mask.
Clear All Labels Remove all labels completely from the mask.
Undo Undo last drawing action.