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3.9.5
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(c) Edge Enhance (1/2)
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.
(c) Invert:
Inverse contrast.