Region Edit Section

Draw

Draws a new region into the image.

Erase

Using this button, you can erase parts of a region. Holding down the left mouse button, outline the parts of the region that you want to erase. Right-click to erase the parts.

Merge

Use this button to connect regions. Holding down the left mouse button to extend the outline of an existing region or draw a connection between the regions that you want to merge. Right-click to merge them.

Fill

Fills a hole. To fill a hole, left-click on the hole.

Remove

Removes a region by clicking on it.

Remove All

Removes all regions on the current z-slice.

Rectangle

Enables you to add a rectangular region.

Circle

Enables you to add a circular region.

Contour

Enables you to add a polygonal region.

Contour (Spline)

Enables you to add a polygonal spline region.

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Define Single Region

In this mode you should only define a single region on each support slice of the image. For the interpolation, the support regions on the different slices do not necessarily have to overlap with one another.

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Define Multiple Regions

In this mode you can define multiple regions on each support slice of the image. Interpolation here is only possible, if the support regions on each slice have some overlap with the respective regions on the previous/next support slice.

Interpolate

Interpolates regions in the slices between the drawn support regions and displays the interpolated regions in the image.

Clear All

Removes all regions (drawn support regions and interpolated ones) in the entire stack.

Undo

Undoes the last change made on the current slice.

Redo

Restores the last undone change on the current slice.