I.R.I.S. Readiris Pro 12 Guide de l'utilisateur télécharger pdf (Page 35)

Readiris

Pro 12 – User Guide

CHAPTER 6

DJUSTING SCANNED DOCUMENTS

During recognition Readiris converts color and grayscale images

into binarized, black-and-white images, on which it performs the

OCR. When opening or scanning extremely light or extremely dark

grayscale and color images, it may be necessary to adjust their

binarized counterparts in order to obtain satisfactory OCR results.

To adjust images:

 Open or scan a color-grayscale document.

Make sure that the scanner settings are correct.

 On the Process menu, click Adjust image. Or click the

corresponding icon on the image toolbar.

Readiris uses intelligent binarization routines to convert color-

grayscale images into black-and-white images, which are used to

perform OCR on.

o Select Smoothen color or grayscale image to even out the

image.

This option renders grayscale and color images more homogeneous by

smoothening out differences in intensity. As a result, a stronger

contrast is created between the foreground (text) and background

(artwork).

Note: this option appears to be the same as the one on the Preferences

menu but is applied at a different stage of the recognition process.

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I.R.I.S. Readiris Pro 12 Guide de l'utilisateur Page 35