ABBYY ScanTo Office User's Guide download pdf (Page 13)

ABBYY ScanTo Office 1.0 User’s Guide

Program settings

Scanning/Opening Images

Conversion quality depends greatly on the quality of the scanned image. In ABBYY ScanTo Office 1.0, you can either scan a paper

document or open an image that is already saved on your computer..

Scanning

ABBYY ScanTo Office "talks" with scanners via the TWAIN interface. This is a standard adopted in 1992 for the interaction of computer

image input devices (such as scanners) and external applications. ABBYY ScanTo Office communicates with your scanner via the scanner's

TWAIN driver. This means that all scanning settings are made in the dialog box provided by the TWAIN driver. In this dialog box, the

preview image option normally becomes available. The option allows you to set the scanning area and tune brightness precisely, and to see

how changes affect the previewed image.

To select a TWAIN driver:

1. In the Options dialog box, go to the Scan/Open Image tab and click the Select Source... button.

2. In the Select TWAIN Source dialog box that opens, select the required driver from the dropdown list and click OK. The name

of the driver will be displayed in the Twain driver field.

Important!

Consult the documentation supplied with the scanner to ensure it is set up correctly. After connecting the scanner to the computer, don't

forget to install a TWAIN driver and/or the scanner software.

Opening image files

If you don't have a scanner, you can still open and convert images of already scanned documents. For the list of supported image formats,

see the Supported Image Formats section.

Scanning Settings

The quality of conversion largely depends on the quality of the image obtained by scanning. The image quality may be improved by altering

such scanning parameters as scan mode, resolution, and brightness.

The main scanning parameters are:

• Scan mode  gray (256 shades of gray).

Scanning in grayscale mode is best for conversion purposes. If you scan your images in grayscale, brightness is adjusted

automatically. Scanning in black and white enables the system to scan at a higher speed, but at the same time some

character information is lost. This may have an adverse effect on conversion quality in the case of documents of mediumto

low print quality. If you scan color documents that contain pictures, colored text, or colored backgrounds, you may wish to

retain the original colors in your electronic document. Use the color scan mode in this case. Otherwise use gray scan mode.

• Resolution  use 300 dpi resolution for regular texts (font size 10pts or greater) and 400600 dpi resolution for texts set in

smaller font sizes (9pts or less).

Note: Scanning at 400600 dpi resolution (instead of the default 300 dpi) or scanning in grayscale or color (instead of black &

white) mode is more time consuming. In the case of certain scanner models, 600 dpi resolution scanning can take up to four

times longer than 300 dpi resolution scanning.

• Brightness  a medium brightness value of around 50% should suffice for most cases.

Some documents scanned in black and white mode may require additional brightness tuning.

To make the scanning settings:

• The scanning settings are made in your scanner's TWAIN dialog box, which will open automatically when you initiate the

scanning process. Scanning options may have different names depending on the scanner model used. For example, for

brightness the word "threshold," a "sun" symbol or a blackandwhite circle may be used. The options available will be

described in full in your scanner documentation.

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ABBYY ScanTo Office User's Guide Page 13