Working with Images > Drawings, Measurements, and Annotations
A spline curve is basically a freehand line that has editable points.
To draw a spline curve on an image, follow these steps:
Open the image in the Image Viewing Workspace or Darkroom mode.
In the Drawings & Annotations toolbar, in the Line icon group, click .
Note: If a white triangle is displayed in the lower corner of the icon, you can access the different tools in the icon group. See Using Icon Groups.
Move the mouse pointer over the image. The pointer changes to .
Click on the image to set the start point of the spline curve. A “+” point is drawn on the image.
Click again to set the second point of the spline curve. A curved line is drawn from the start point to the second point.
Tip: To change the line color, see Changing Object Color and Line Thickness.
Click to add additional points to the spline curve.
Double-click on the image to set the end point of the spline curve.
To turn off the tool, move the pointer outside the image.
Drawings, Measurements, and Annotations
Drawing a Multi-Segment Line (Polyline)
Adding a Text Annotation to an Image
Using the Undo and Redo Functions
Changing Object Color and Line Thickness
Using Measurements to Calculate Distances and Angles
Using the Densitometric Analysis Tool