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3 votes
1 answer
946 views

When a PDF file only contains a scanned image, is it just a JPG image inside a PDF container?

Many scanners can scan a page into a PDF file. When this is done, is the PDF file really just a container that contains a single image? Is that image typically a JPG image, a PDF image, or a ...
End Antisemitic Hate's user avatar
0 votes
1 answer
5k views

Document scanning: How to speed up the software part of the scanning process? [closed]

I am looking for a solution to speed up my document scanning process, especially for those documents that are not suitable for a typical document scanner with an automatic document feeder (ADF). For ...
user291737's user avatar
10 votes
7 answers
10k views

Detecting blank image files

I am using scanimage with a document scanner (Canon DR-2510C) that supports duplex scanning. Unfortunately, its SANE driver does not support blank page detection, so that with mixed pages (single/...
Thilo-Alexander Ginkel's user avatar
11 votes
4 answers
37k views

How to get a good clean newspaper scan?

I tried a few times to scan newspaper articles, but the images I got were always blotchy and with bad colors, sort of like this: Sometimes I see some really good scans, like this: What is the trick ...
itsadok's user avatar
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