Visioneer XP450 Instalační příručka stáhnout pdf (Strana 22)

18 VISIONEER STROBE XP 450 SCANNER INSTALLATION GUIDE

select the Custom option from the drop-down list, boxes appear in

place of the picture. Enter the horizontal and vertical page

dimensions in the boxes.

AutoCrop—This option lets the scanner automatically determine

the size of the item being scanned. For example, if you scan an

unusual page size, the scanner will automatically determine the size

of the page.

DeScreen—Select this option when scanning a picture from a

newspaper or magazine article, or other items that contain images

with patterns or dots. These patterns and dots sometimes cause a

wavy appearance for which the Descreen option can compensate.

The following example shows the effect of descreening a scanned

image from a magazine article.

The scanning may slow down a bit when descreen is selected. The

DeScreen setting does not apply to the Black/White mode.

Gamma—Drag the slider to improve how the colors in a scanned

image look on your monitor. Gamma correction allows you to

achieve precise color matching. Because the computer cannot

always transmit the exact color information to the hardware, you

may have to make some color adjustments using the Gamma

feature.

The default Gamma setting works ﬁne in most cases and normally

does not need to be adjusted.

6. Click OK to save the new conﬁguration.

On the Conﬁguration dialog box, make sure the conﬁguration you

just deﬁned is selected.

Original Image Descreened Image

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Visioneer XP450 Instalační příručka Strana 22