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Chapter 10 Post-Acquisition Processing Mask Operations 157
Sharpening Procedure
Use the following procedure to sharpen an image.
➧ Select
Sharpening
from the Process menu.
➧ Enter the Input Image and Output Image names.
➧ On the
Input
tab page, select the data frame containing the data on which the
operation is to be performed.
➧ If you wish to process only part of the Input Image, enter the appropriate X-Y range
values. Alternatively specify a data region in the active window using the mouse and
click the
Mouse
button at the bottom of the window to enter those values.
➧ Select one of the Operations. Since image features vary widely, it is best to simply
try the different operations to determine the best one.
➧ To set a specialized 3 3 mask, select User Defined and change the Kernal
parameters to their new values.
➧ Click on
Process
to begin processing.
Control Buttons:
Mouse:
Allows you to specify a region to be processed using the mouse. Simply drag a
box in the data region of the active window and then click on
Mouse
. The
Frame
and
Range
parameters will assume the values of the defined region.
Note that the
Mouse
button is only active when the
Input
tab page is selected.
Process:
Initiates the process selected via the Parameters tab page. The selected
process is performed on the data specified on the Input tab page and saved using
the file name and data type specified on the Output tab page.
Close:
Closes the window with no action taken.
Help:
Opens context-sensitive help for the active tab page.
Figure 135.
Sharpening
Output tab
page.