ABBYY FineReader 8.0 and resolution
Thread poster: hasse

English to Swedish
Mar 6, 2006

Under "Change image resolution" in the manual for FR 8.0 Prof, onecan read:

"If OCR quality for a particular image is poor, changing its resolution may help
improve the quality. To change the resolution of an image marked with [yellow triangle with an "!" in it]:

In the Batch window, select the image marked with whose resolution you wish to
change. If the pop-up tip says that the image has invalid resolution, select the
Correct Resolution command from the Image menu. In the dialog that opens, either
select the type of the image (scanned image, faxed image, or screenshot) or
select Other resolution and type in the exact resolution of the image. Select
Selected images to change the resolution of the selected images. Select All
images in batch to change the resolution of all the images in the batch. The
latter option is recommended for images obtained from one and the same source. "

I have scanned images in a batch, and all images has the yellow triangle with an "!" in
them, and the tip says "Warning: Increase resolution to improve recognition
accuracy of small text."

However, when I select an image in the batch window, *no* dialog opens. Does anyone know why?

I have two other questions:

- how can I see the resolution of the images in the batch?

- how come, since the scanning has already taken place, that one can improve
the resolution of the resulting images?


Hans L

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Jaroslaw Michalak  Identity Verified
Local time: 01:56
Member (2004)
English to Polish
"Correct" is not "improve" Mar 6, 2006

To display the dialog option, you have to select the image and then the "Correct resolution" option. There you can apply the change to the whole batch.

The purpose of this feature is not to "improve" the resolution. It is rather to inform FineReader of the scanned resolution, so that it can adapt its settings accordingly. Many graphic formats do not have information on the resolution/size of the image, so that an A4 page scanned at 300 dpi "looks" the same to the software as an A5 page scanned at 600.

If FineReader complains about the resolution, you might try to resample the images with another program. It is not as good as scanning at better resolution, of course, but it can improve the OCR performance.

Irfan is good for this purpose, moreover it also allows to correct brightness, convert to grayscale, etc. It can work with batches and it is freeware.

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English to Swedish
Correct/improve Mar 6, 2006

Thank you, Jabberwock!

The manual is thus very poorly written.


Hans L

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