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Description

The ROI Donut is a circular ROI.

Donut ROI

When the ROI box is selected it will turn red and 4 smaller boxes will be placed around the ROI so you can resize it. 

If you hold CTRL down when resizing the ROI will maintain a perfectly round shape.

If the donut ROI is used to select or analyse a part of an image, the image is only selected or analyzed between the two circles.  The "donut hole" is not used in the processing.

>If you right-click inside the ROI it will display the ROI property page.


The "Color" and "Highlight color" options allow you to change the color of the ROI box.

The Thickness allows you to change the width of the ROI box line.  The higher the number the thicker the line.

Inputs

CIFViewer

Point

Parameters

ROI

InnerRadius

-1 then uses the ROI Radius

ScaleInnerRadius

typically 1 but can be used to scale the InnerRadius

OffsetInnerRadius

Additive Offset

OuterRadius

-1 then uses the ROI Radius

ScaleOuterRadius

OffsetOuterRadius

Additive Offset

ROI_x

ROI_y

ROI_Inner

ROI_Outer

ShowROI

RenderStyle

CoordinateSystem

controls how the ROI understands where it is on the screen

RefreshViewer

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