User's Manual

RTR-4 Operator’s Manual System Operation
120300 Rev. D SAIC Proprietary 4-23
Using Histogram Equalization
Description
The Histogram Equalize command moves the density scale of
an image slightly causing the lighter areas to darken slightly and
the darker areas to lighten slightly. Follow this procedure to
perform a Histogram Equalize.
Prerequisites
Verify the following prerequisites are completed before beginning
this procedure:
• The RTR-4 imaging software is on and software preferences
have been set.
• An image is displayed in the Original buffer.
Procedure RTR0023
Use Histogram Equalize as follows:
Image Preservation
The operator must be aware of the following regarding image
preservation:
• A newly acquired image is displayed in the Original buffer.
• A newly acquired image remains unchanged in the Original
buffer until another image is acquired or a saved image is
opened with the File Open command while the Original
buffer is active.
STEP ACTION
1 Select Histogram Equalize from the Modify
pull-down menu.
2 The equalized image appears in the Modified
buffer.
NOTE
Histogram Equalize only slightly affects an image.
More than one use is unlikely to produce any useful
results.
Use the Ctrl+Z key combination or click the Undo
button on the toolbar to undo. Also, you may
return to the Original buffer.
RTR0018b