User's Manual

System Operation RTR-4 Operator’s Manual
4-14 SAIC Proprietary 120300 Rev. D
Using Contrast Stretch
Description
Contrast Stretch provides the operator with the most useful tool
to analyze images. This function allows the operator to make
graduated changes in the brightness and contrast of an image.
Doing this often reveals objects of very slight differences in
density from their surroundings.
Follow this procedure to adjust the brightness, darkness, and
contrast of an image.
Prerequisites
Verify the following prerequisites are completed before beginning
this procedure:
• The RTR-4 imaging software has been properly configured and
is loaded and running.
• An image is displayed in the Original buffer.
Procedure RTR0014
Use Contrast Stretch as follows:
5 Move cursor to the beginning point of the line and
click the mouse button.
6 Move the cursor to the end point of the line and click
the mouse button.
STEP ACTION
STEP ACTION
1 Press the F5 key or click the Contrast Stretch
button on the toolbar. The Contrast Stretch
dialog box appears.
RTR0007b