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Scanning from the Manual Mode / Optimizing Scanning

Improving Text Scanning for OCR

Potential text recognition problems

This section gives you suggestions and recommended settings in order to improve OCR (Optical Character Recognition) scanning results.

Make sure Text (Background Removal) is selected in the Image Type list box and OCR is selected in the Destination list box. Then click the Image Type button. The Image Type dialog box appears.

In the Image Type dialog box, select None for B/W Option, and then click OK.

Click the Full Preview button. Then click the Image Controls button to display the Image Controls dialog box.

Use the Threshold slider to change the threshold value, monitoring the results of your changes in the Preview window. Adjusting the threshold value can make it easier for OCR to recognize characters.

Note:

The Threshold setting is available only when Pixel Depth is set to Black & White and Halftone is set to None in the Image Type dialog box.

You can move the Threshold slider left or right, or enter a value between 0 (lightest) and 255 (darkest) in the text box.

Potential text recognition problems

The quality of the text in your original document greatly effects OCR results.

The following types of originals can make recognition difficult and should be avoided if possible:

Items that have been copied from other copies

Faxes

Text with tightly-spaced characters or line pitch

Text that is in tables or underlined

Cursive or italic fonts, and font sizes less than 8 points

Remember that OCR software cannot recognize handwritten characters.

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