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ClearScan option will display smoother edges as shown in the bottom illustration of the
word "Ozone" in
Figure 2 on page 5
Figure 2 Bitmap text (top) and text that has undergone OCR (bottom)
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Use assistive technology or the Read Out Loud feature. Acrobat 9 Pro can detect the
presence of assistive technology and if it encounters a scanned document will announce an
audible empty page warning and display the Scanned Page Alert dialog
Scanned Page Alert Dialog" on page 5)
What to Do if the PDF is a Scanned Document
Perform Optical Character Recognition (OCR) to convert the bitmap image of text to actual characters. In
Acrobat 9 Pro. You can do this by selecting "OK" from the Scanned Page Alert dialog
Scanned Page Alert Dialog" on page 5)
Acrobat 9.
•
Document > OCR Text Recognition > Recognize Text Using OCR...
•
or use the keyboard accelerator: ALT + D + C + R
All three of these methods will result in the display of the Recognize Text dialog
Text Dialog and Recognize Text Settings" on page 6)
the desired characteristics for the resulting file.
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Primary OCR Language (user should select the applicable document language)
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PDF Output Style should be ClearScan. ClearScan will allow the resulting PDF to "reflow". The
other two options, "Searchable Image" and "Searchable Image Exact" will work with assistive
technology but will result in a PDF file that cannot be reflowed.
•
Downsample should be set to the lowest downsampling which results in the highest resolution as
measured in dots per inch (dpi). This should be 600 dpi.
PDF Accessible Repair with Adobe Acrobat 9 Pro
Acrobat 9 Pro PDF Accessibility Repair Workflow
Figure 3 Scanned Page Alert Dialog
You can also run the "Recognize Text Using OCR" command in
Use the Edit button in the scanned page dialog to set
(See "Figure 3
(See "Figure 3
(See "Figure 4 Recognize
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