Operation Manual

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.
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