Operation Manual

Readiris 16 - User Guide

Resolution

Select in which resolution you want to scan images. A resolution of 300 dpi (dots per inch) is

recommended. When you are scanning very small print or Asian languages, 400 dpi is recommended.

Color mode

Readiris can scan documents in color, black-and-white and grayscale.

Note that grayscale and color images return the best OCR results.

Landscape

Select the Landscape option when scanning landscape-oriented documents instead of portrait-oriented

documents.

When this option is selected, Readiris displays your documents as landscape-oriented documents in the

interface.

Auto-exposure

With some scanners the Auto-exposure option is selected by default. This option adjusts the contrast and

brightness settings automatically. A good contrast is required to obtain optimal recognition results.

Note: when this option is selected, the Contrast and Brightness sliders are unavailable.

ADF

ADF stands for Automatic Document Feeder. This option is available when your scanner is equipped with an

automatic document feeder. Select this option when you want to scan stacks of documents all at once.

Invert

Sometimes Twain scanners display white text on a black background when scanning documents in black-

and-white. To reverse the color of text/background on your documents, select the Invert option.

Digital camera

When you are using a Twain compatible digital camera, you can use your camera directly as scan

source. To do so, select the Digital camera option. Readiris will then use special recognition routines to

process the digital camera images.

See the section How to process digital camera images for tips on using a camera as scan source.

Process as 300 dpi

Select the option Process as 300 dpi when you are processing images of an incorrect or unknown

resolution. The images will be processed as if they had a 300 dpi resolution.

Smoothen color images

This option is selected by default. It improves the appearance of color and grayscale images in your

documents.

Note: with some scanners, image smoothening is required to recognize color and grayscale images

successfully.