GE Amersham Imager 680 Operating Instructions Manual page 187

Option
Minimum profile
Rolling ball
Subtract background
Step
1
Amersham Imager 680 Operating Instructions 29271308 AB
Description
Use this option to subtract all the background below the
minimum value in the lane profile view.
Use this option to subtract the background below the graph
as if erasing it using the radius of a ball. A small radius will
subtract more background than a large.
Action
If an image of the sample is displayed, select the lane profile button.
Result: A screen will appear displaying the lane profile graphically, with the
current lane number displayed in the drop down list and the lane profile
button in blue.
5 Operation
5.8 Analyze the image
5.8.2 Background Subtraction
187