Unpaper 1.1 book scan post-processor

Alexander Turcic · 02-14-2006, 05:30 AM

So you've a bunch of old-fashioned p-books and want to put them somehow on your PDA, Tablet PCs or e Ink device? Welcome to unpaper, an open-source post-processing tool for scanned sheets of paper, especially for book pages that have been scanned from previously created photocopies.

Unpaper tries to clean scanned images by removing dark edges that appeared through scanning or copying on areas outside the actual page content (e.g. dark areas between the left-hand-side and the right-hand-side of a double- sided book-page scan). The program also tries to detect disaligned centering and rotation of pages and will automatically straighten each page by rotating it to the correct angle. This process is called "deskewing".

Sources can be downloaded from here.

cze · 07-06-2009, 11:51 AM

Windows binary is included in pdfread, see https://www.mobileread.com/forums/showthread.php?t=21906 , install and see in program directory under the folder /bin .

HarryT · 07-06-2009, 11:54 AM

Please note that this is a 3 year-old announcement.

ahi · 07-07-2009, 03:01 PM

The software, however, is still golden, Harry.

I highly recommend it to anybody doing book scanning--whether for preprocessing for OCR or final un-OCR'd reading. Takes a while to figure out the settings, but pretty much anything I wanted, I've been able to get unpaper to do.

- Ahi

02-14-2006, 05:30 AM	#1
Alexander Turcic Fully Converged Posts: 18,171 Karma: 14021202 Join Date: Oct 2002 Location: Switzerland Device: Too many to count here.	Unpaper 1.1 book scan post-processor So you've a bunch of old-fashioned p-books and want to put them somehow on your PDA, Tablet PCs or e Ink device? Welcome to unpaper, an open-source post-processing tool for scanned sheets of paper, especially for book pages that have been scanned from previously created photocopies. Unpaper tries to clean scanned images by removing dark edges that appeared through scanning or copying on areas outside the actual page content (e.g. dark areas between the left-hand-side and the right-hand-side of a double- sided book-page scan). The program also tries to detect disaligned centering and rotation of pages and will automatically straighten each page by rotating it to the correct angle. This process is called "deskewing". Sources can be downloaded from here.

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07-06-2009, 11:51 AM	#2
cze Member Posts: 10 Karma: 10 Join Date: Jun 2009 Device: none	Windows binary is included in pdfread, see https://www.mobileread.com/forums/showthread.php?t=21906 , install and see in program directory under the folder /bin .

07-06-2009, 11:54 AM	#3
HarryT eBook Enthusiast Posts: 85,544 Karma: 93383099 Join Date: Nov 2006 Location: UK Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6	Please note that this is a 3 year-old announcement.

07-07-2009, 03:01 PM	#4
ahi Wizard Posts: 1,790 Karma: 507333 Join Date: May 2009 Device: none	The software, however, is still golden, Harry. I highly recommend it to anybody doing book scanning--whether for preprocessing for OCR or final un-OCR'd reading. Takes a while to figure out the settings, but pretty much anything I wanted, I've been able to get unpaper to do. - Ahi

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