Plustek OPTICFILM 8200I AI — устранение сетки и улучшение качества сканирования изображений [25/28]
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Plustek OPTICFILM 8200I AI — устранение сетки и улучшение качества сканирования изображений [25/28]

Plustek OPTICFILM 8200I AI [25/28] English
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4-9. Descreening
Printed originals will always have a screen that
is created during the printing process from the
individual printer dots. When scanning with
high resolution this screen can become visible
and overlap with other screens to very annoying
Moiré effects. The SilverFast Descreening can
automatically detect and remove this printing
screen.
• If you know the printing screen of your original, you
can directly set it in the controls dock. Select the menu
item “Custom“ from the “Screen“ menu and adjust the
screen in lpi. If you don‘t know your originals screen,
select the menu item “Auto“ or a suitable default value.
• Below you will find a slider that is for determining the
threshold from which the descreening functionality is
taking effect.
• For previewing your settings, a detailed PreScan of a
representative image section is required. Therefore,
click on the “1:1“ button.
4-10. SilverFast Multi-Exposure®
The Dynamic Range, i.e. the number of gray lev-
els of transparent originals can be so large that
conventional scanners can not completely cap-
ture it. In this case image details are lost espe-
cially in the shadows. SilverFast Multi- Exposure
increases the scanner‘s effective Dynamic Range
by performing two scans with different expo-
sure times. These two scans are then merged to
become the final enhanced image.
• You can activate and deactivate Multi-Exposure by
clicking onto the icon in the standard tools bar above
the preview window. Multi-Exposure requires more
time for performing the scan, but in return, visibly
improves the results.
4-11. iSRD® (infrared based Dust and Scratch
Removal)
Slides and negatives often have minor scratches
or dust particles that can get very striking by the
magnification of scanning. iSRD uses the scan-
ner‘s infrared channel to detect these defects,
which an intelligent algorithm then removes
from the image. SRD in contrast does not require
an infrared channel.
• Select “Automatic“ from the “Correction“ menu in the
iSRD dialog to use iSRD in automatic mode. If you want
to adjust the strength of defect detection yourself,
select menu item “Correct“. Use the slider “Detection“
below to adjust detection strength.
Multi-Exposure can only be ap-
plied to transparent originals.
Not every scanner is capable of
supporting Multi-Exposure.
active inactive
www.SilverFast.com/sf/Multi-Exposure
ENGLISH

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Узнайте, как устранить эффекты сетки и улучшить динамический диапазон при сканировании с помощью современных технологий. Оптимизируйте качество ваших изображений.

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