2.3Graphical User Interface (GUI)

2.3.7.10SIGNAL PROCESSING Window

Applies real time digital image processing to the scanning image.

Processing selection box

Intensity selection box

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.

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