Adaptec 1542CP - Storage Controller Fast SCSI 10 MBps Guía de usuario descargar pdf (Pagina 336)

A-63054 February 2004 9B-5

Using Image Setup Image Setup provides four tabs: Filters, Check, Mask, and Color Dropout.

Following are descriptions of these tabs.

The content and availability of each tab may be different, depending on the

Image type (bitonal, color, or grayscale) selected in Page setup.

NOTE: The Delete button on the Image Setup dialog box allows you to delete

an image setup and remove it from the list of available image setups.

Filters tab The Filters tab is different depending on the image type selected. The JPEG

Quality, Sharpening, and Descreen options are available only when scanning

in color or grayscale.

Threshold—threshold controls the lightness and darkness of the

background in an image. As the threshold value increases, more of the darker

grays in the image turn black. As the threshold value decreases, fewer darker

grays turn black. Enter a value between -100 and 100.

The larger the number, the darker the image. A darker setting is recommended

for documents containing blurred characters. A lighter setting will eliminate

background noise in a color document.

NOTE: When scanning in color or grayscale with auto-crop and deskew

enabled, a Threshold setting of 10 or higher is recommended to obtain

the best results.

Contrast—contrast adjusts the differences between black and white,

making an image sharper or softer. Decreasing the contrast level softens the

image. In a high-contrast setting, the difference between black and white is

large, so the image is clearer. Enter a value between -100 and 100.

Halftone—select a setting from the drop-down list to simulate grayscale by

using various dot sizes. If you view a halftone image at a certain distance, it

looks much like a grayscale image, but the file size is smaller. You can specify

None, Halftone 1, Halftone 2, Halftone 3, Halftone 4, or Diffusion.

Sharpening—select a setting from the drop-down list to sharpen the scanned

image. You can specify None, Light, More, Heavy, or Extra Heavy.

Filters tab (bitonal scanning)

Filters tab (color and

grayscale scanning)

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Adaptec 1542CP - Storage Controller Fast SCSI 10 MBps Guía de usuario Pagina 336