Samsung SF-4500 Manuale Utente Scaricare il pdf (Pagina 182)

2.11

MyScan

Descreen

If you choose halftone-printed graphic material as your object for scanning,

its halftone printing dot pattern may result in interference patterns

occurring in the resulting scanned image. The image may appear to have a

checkered, banded, or dotted appearance. These interference patterns are

called moire patterns, and Descreen preprocessing can minimize the

transfer of them into your image file.

Besides a default setting of None (no descreening), the Descreen selector

provides three grades of descreen preprocessing.

No Descreen

No descreening.

Art print (175 lpi)

Smoothes the fine dot pattern found in high quality art prints, and

magazines.

Magazine (133 dpi)

Smoothes the fine dot pattern found in glossy magazines made using

resolution higher than 200dpi.

Newspaper (85 lpi)

Smoothes the coarse grain pattern commonly found in newspaper images.

The preview display is not affected by the Descreen option. In order to see the

results of Descreen preprocessing, it is always necessary to choose Scan, and

then examine the output image after it has been passed to your imaging

application.

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Samsung SF-4500 Manuale Utente Pagina 182