Comments on: ImageMagick Fun

By: Destillat #11 | duetsch.info - Open Source, Wet-, Web-, Software

Destillat #11 | duetsch.info - Open Source, Wet-, Web-, Software — Mon, 08 Mar 2010 12:18:17 +0000

[...] ImageMagick Fun [...]

By: teebs

Thu, 04 Mar 2010 18:11:12 +0000

Ive imported documents into Inkscape and simply put white boxes/shapes to cover the area in question and printing. It only imports one page at a time so it may be a touch tedious on larger documents.

By: twitter

Tue, 02 Mar 2010 07:09:31 +0000

I second the poppler-utils recommendation. Once you have the images out by pdfimages, you can start to hack away with image magic. If your scanner was good enough to do text conversion, use pdftotext. pdftohtml is also nice.

By: Links 1/3/2010: New Linux Benchmarks ARM Development Studio for Linux | Boycott Novell

Tue, 02 Mar 2010 01:05:00 +0000

[...] ImageMagick Fun The “fun” in the title should be read in your most sarcastic tone of voice… Anyways, one of my professors mailed us a PDF of a scanned document to read (and print out) for the next class. Being that is was scanned in (by what appeared to be the professor literally holding it above a scanner) there was a lot of excess black in the picture. [...]

By: Patrick

Mon, 01 Mar 2010 05:51:39 +0000

I guess I would have used GIMP for cropping (and probably enhancing the contrast, which is necessary on most scanned documents I get), then created a PDF again (following https://patrick-nagel.net/blog/archives/199), which I would then have printed / redistributed.

By: goffrie

Mon, 01 Mar 2010 02:15:03 +0000

You could use unpaper to automatically crop the black borders for you, instead of using ImageMagick. (You still need to get an image as a pnm first, though.)

By: muuloo

Mon, 01 Mar 2010 01:55:27 +0000

Another trick would be to use pdfimages (part of poppler-utils) to extract all the embedded images 1:1 (without letting Ghostscript scale them). This will usually give you the best quality possible when you deal with pdf with embedded images.
The tool is also very useful when you want to get some other images from a pdf ;-)

By: RS

Mon, 01 Mar 2010 00:21:34 +0000

Could you please post the full commands you ran to crop the PDFs? Thank you!

By: mpyne

Sun, 28 Feb 2010 23:47:11 +0000

Baxeico: I considered pdfcrop but it seemed that it’s designed more for removing the ridiculous amount of whitespace provided in the LaTeX-generated PDFs from articles and journals. If it had a feature to remove black borders from scanned documents then I must have missed it.

By: Baxeico

Sun, 28 Feb 2010 23:28:50 +0000

I used pdfcrop (http://pdfcrop.sourceforge.net/) in the past for a similar task and it did a great job for me!