user manual

3.9.5

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Similar but stronger effect than the above Sharpen.

(d) Invert

Inverse contrast.

(e) Gamma (-5 to +5)

Plus value of Gamma suppresses white contrast and enhances dark part.

Minus value increases contrast.

NOTICE: 1. The digital processing is applied to saved images and pictures taken using

Memory photographing. It is not applied to pictures taken with Direct

photographing.

2. When you set or change the processing, scanning will be reset to the top of the

frame.

(2) Analog signal processing for optional detector signal

To use analog signal processing, click the Option Signal button in the SIGNAL

PROCESSING block on the Operation panel. The Signal Processing dialog window will

open.

Fig. 3.9-18 Opt. Signal Processing Menu

(a) Gamma:

Gamma correction suppresses excessive contrast, maintaining the contrast of the

average brightness of the image.

(b) Differential:

Differential 1 and 2 are high-pass filters for the image signal. When applied, the image

is differentiated in a horizontal direction and details of the image are emphasized, while

broad shades are suppressed. Results vary with scanning speeds because it applies

time domain differentiation.

Inverse contrast.