ROI
Tool
To create an ROI on an Image, select the ROI Tool, then left-click at the starting point for the ROI and drag the cursor (with the left-button down) to the ending point. For a circle, the starting and ending points are on the diameter of the circle, while for an ellipse, the starting and ending points are the opposite corners of the rectangle that contains the ellipse.
If you have Image Tool Tips enabled, a yellow box will track with the cursor showing the diameter, area, mean and standard deviation for the pixel data in the ROI. In addition, the status bar at the bottom of the RadPix Main Window will display these values. If you have enabled Show Annotation On Image, the selected annotations will also appear on the image.
Right Click on the image or the ROI Tool icon, and the ROI Tool Popup Menu will appear - see below.
When the ROI Tool is active, the Cursor looks like this: 
ROI Tool Popup Menu
When you right-click on the image or the ROI Tool Button, the following Menu appears:
| Pen Color | This is the color that is used to draw the ROI on the Image |
| Pen Width | This is the thickness of the pen used for drawing the ROI on the Image |
| Show Annotations on Image | When this option is selected, annotation text will be shown on the Image |
| Diameter | Check this option to display the diameter of the circle |
| Area | Check this option to display the area of the circle |
| Mean Data Value | Check this option to display the mean for the pixel data in the image |
| Standard Deviation | Check this option to display the standard deviation for the pixel data in the image |
| Annotation Location | The annotation can be placed in any of the 4 corners of the image. |
| Annotation Font | This is the font used to draw the annotation |
| Background Color | This is the background color behind the annotation |
| Border Color | This is the color of the border drawn around the annotation |
| Border Width | This is the width of the border drawn around the annotation |
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| info@radpix.com | Last Updated 12-6-04 |