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2.3 Graphical User Interface (GUI)
2 - 46
2.3.7.10 SIGNAL PROCESSING Window
Applies real time digital image processing to the scanning image.
Fig. 2.3-34 SIGNAL PROCESSING Window
(1) Processing selection box
Selects a processing.
• Smooth: Applies pixel averaging spatial filtering. Reduces snow noise.
Effective especially in case of high magnification image where the beam
spot size is larger than pixel size. For low magnification images having fine
structures, it may cause some degradation of sharpness.
Two processing intensities selectable.
• Sharpen: Increases sharpness of scanning image.
Two processing intensities selectable.
It may increase noise when the original image contains snow noise.
• Edge Enhance: Similar but stronger processing than Sharpen.
• Invert: Color inversion. Results in negative image.
• Gamma: Gamma correction.
-5 to +5 selectable.
(2) Intensity selection box
Selects a processing intensity.
NOTICE: The signal processing is not applied to pictures taken with direct photo function.
The signal processing is not applicable when operating with Dual screen mode.
It is possible to apply similar spatial filtering to saved images using SEM Data
Manager.
Processing selection box
Intensity selection box