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Is this possible even ?

I put 4 pictures on the flatbed scanner, scan them as a group (with white background from the scanner <-- heavy contrast with the scanned pictures). Now, I'm interested - is there some program which could determine the (little it may be) the rotation of those pictures, their boundaries and cut them up from the "big image" so that I get 4 picture images ?

I've no idea if this makes any sense ... if it doesn't ask away and I'll do my best to confuse you even further.

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4 Answers

up vote 2 down vote accepted

Photshop Elements can automatically divide a scanned picture into subpictures. Too bad your scanner didn't come with the software, but I've seen scanners come with software to divide pictures and even do corrections like if there were wrinkles in the pictures.

I hope this helps.

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There is a new ImageMagick Script that does exactly what you are asking here: http://www.fmwconcepts.com/imagemagick/multicrop/index.php

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It looks very(!) interesting. I'll definitely try to test it in practice in the next few days when I get ahold of my scanner. –  ldigas Apr 25 '12 at 10:15
    
This is nice, but very slow. 1.2 GB will be created temporarly for a 2.4 MB jpeg containing 3 images. I will try if a RAM-disk will improve performance. –  math Feb 13 '13 at 19:17
    
So working within a ramdisk will improve drastically the speed. some seconds compared to 5-8 minutes in the scenario above. –  math Feb 13 '13 at 19:27
    
The scripts provided by fmwconcepts.com/imagemagick/index.php work for me. Download multicrop and unrotate from Freds site. Then use chmod +x to make the scripts executable.Move scripts to /usr/local/bin/ so that these commands are available in shell. Bulk and batch scan of photos on flatbed scanner. scanimage --mode color --resolution=300 --batch --batch-start=2 --batch-prompt. Then at shell: for f in *.pnm; do multicrop -c 10,10 -f 20 -u 3 $f $f.png; done –  Rudiger Wolf Jul 7 '13 at 16:00
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A similar was question asked in the ImageMagick forum, from what i gather, they only came up with a solution for single images, worth reading anyway:

auto-crop multiple old photographs from scanned image?

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Thanks Molly. So, I gather, it isn't that trivial ... –  ldigas Jan 19 '10 at 1:29
    
at least i seem to understand what you're talking about :) –  Molly7244 Jan 19 '10 at 1:34
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I recommend AutoSplitter for that task. Detected subimages will be clipped and derotated automatically. You can also adjust all the clipping/rotating parameters manually to correct everything that is not accurate or missing.

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