Auto rotate documents?

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erik_p
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Auto rotate documents?

Post by erik_p »

Is there any way with PDF Tools to auto rotate documents? If I scan a document backwards, anyway to rotate it 180 degrees before OCR and so on?

Thanks

Erik.
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DenisO
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Re: Auto rotate documents?

Post by DenisO »

Hi Erik,
you can use rotate pages action for scanned documents.
In attachments you can find the tool that rotates scanned pages then applies OCR.
Best regards
Attachments
ScanAndRotateTool.zip
(1.27 KiB) Downloaded 158 times
Denis Oleksenko
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Will - Tracker Supp
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Re: Auto rotate documents?

Post by Will - Tracker Supp »

Hi Erik,

Thanks for the post - This is not currently possible, but should be possible with the release of Version 8:
image.png
The screen-shot is from an internal preview of the Editor, but the same Enhanced OCR should be available within PDF-Tools too.

Cheers,
If posting files to this forum, you must archive the files to a ZIP, RAR or 7z file or they will not be uploaded.
Thank you.

Best regards

Will Travaglini
Tracker Support (Europe)
Tracker Software Products Ltd.
http://www.tracker-software.com
erik_p
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Re: Auto rotate documents?

Post by erik_p »

Hi Will,

Awesome - looking forward for version 8.

Erik.
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Radi - Tracker Supp
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Re: Auto rotate documents?

Post by Radi - Tracker Supp »

:)
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David.P
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Re: Auto rotate documents?

Post by David.P »

Hello all,

I am also wondering about this, as my documents do not seem to be rotated automatically after scanning.

Shouldn't this setting in the scan settings ensure that text recognition automatically rotates documents after scanning:

image.png

Even pure text pages that are clearly rotated by 90 or 180 degrees are not rotated automatically, and yet the text is recognized correctly.

Also, is there an option to delete empty pages (e.g. with adjustable threshold for "empty" recognition) after scanning, particularly when using a scanner with hardware duplex that scans both sides of each sheet?

And an additional question please: are all CPU cores automatically used for "Enhanced" OCR, or is there a setting for it? I have not found a setting for OCR under "Performance" in the Preferences.

Thank you
David
David.P
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Re: Auto rotate documents?

Post by Tracker Supp-Stefan »

Hello David.P,

Further down in the OCR Dialogue you should have this option (it is off for me - so likely that is the default state):
image.png
The Detection is used only for the OCR step, if you want the page to then 'physically' be corrected to upright position - you'd need that option turned on as well!

Kind regards,
Stefan
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David.P
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Re: Auto rotate documents?

Post by David.P »

Thank you Stefan,

sorry, probably my post is not exactly in the proper sub-forum, as my above screenshot shows the Scanning dialog option in PDF-XChange Editor, not in PDF-Tools.

It seems that an option for auto-rotation does not exist over there, or does it?

Best regards
David
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Re: Auto rotate documents?

Post by Tracker Supp-Stefan »

Hello David.P,

Which build are you currently using?
I do have that option:
image.png
The above shot is with the EOCR turned on in Tool.

The "Fix content sckew" is available with the Standard OCR as well:
image(1).png
Kind regards,
Stefan
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David.P
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Re: Auto rotate documents?

Post by David.P »

Yes Stefan, the autorotation option is available in these two places, but it does not seem to be available in the normal scanning dialog of PDF-XChange Editor:

Autorotation not available when scanning in PDF-XChange Editor.png
David.P
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Re: Auto rotate documents?

Post by Tracker Supp-Stefan »

Hello David.P,

You are correct! It does seem like only the detection option is available there, and not an option to also rotate the images. I will pass this on to our devs for investigation!

Kind regards,
Stefan
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David.P
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Re: Auto rotate documents?

Post by David.P »

Many thanks Stefan. Perhaps the lack of this option in that third place (manual scanning in PDF-XChange Editor) was just a small oversight.

Best regards
David
:)
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Re: Auto rotate documents?

Post by Tracker Supp-Stefan »

Hello David.P,

I've asked my colleagues if that is so. It could be that as those are image post processing operations - they can't really apply the same as when you are running the OCR on it's own, but if it is an oversight - we will definitely set up the ticket and fix that!

Kind regards,
Stefan
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