04-03-2011, 05:07 AM | #1 |
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Device: Sony PRS-350
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Image Magick equivalent for pdflrf
Hello,
My first post here. Hope I'm doing everything "according to the book"! I've been using pdflrf for a while now, and although the results are not bad at all, I feel I need to have some more control. I'm hoping I can use Image Magick to do what pdflrf does, with the added advantage that I can adjust settings more easily. Specifically, I want to be able to: - review/modify the generated png files before compiling them into an ebook - convert to epub instead of lrf My workflow would be something like this: - convert the pdf file to png - get rid of the white margins (Image Magick does a wonderful job here) - rotate 90° and resize the height so it's equal to the width of my ereader screen (Sony PRS-350) - make chunks with dimensions that fit my ereader - if text lines are broken, find a line that's completely white and split there instead (cf. "smart cut" in pdflrf) - thicken the edges, to increase readability - join pages (so I don't have pages with just a couple of lines on them, cf. pdflrf) - compile to epub This would be (mostly) the same workflow as in pdflrf... Can this be done with Image Magick? (or another tool, perhaps) Thanks, Baliantas Last edited by baliantas; 04-03-2011 at 05:23 AM. Reason: Title update |
04-03-2011, 05:29 AM | #2 |
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Yes, Scan Tailor: http://scantailor.sourceforge.net
To edit PNG images you can use GIMP: http://www.gimp.org They are both very powerful open source tools. Edit: Scan Tailor outputs .tif images, but it's all the same (lossless just like PNG). If you're keen on PNG you could do a batch conversion using IrfanView or similar. But honestly, PNG/TIFF, it's all the same to me - though it may not be the all the same with the e-reader, so you need to experiment. AFAIK, ePUB splits graphics automatically. So you could, perhaps, set the top margin in Scan Tailor at 1 (maybe except for the chapter headings) for the pages to transition more smoothly. Then you would basically have an ePUB full of graphics, specifically "tailored" for the PRS-350, which I believe is what you're trying to accomplish. But you won't be able to search or highlight, they're images. Then again, same with a book borrowed from a library... You may be onto something. Last edited by DSpider; 04-03-2011 at 05:44 AM. |
04-03-2011, 05:47 AM | #3 | |
Junior Member
Posts: 9
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Device: Sony PRS-350
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Quote:
- resize the height so it's equal to the width of my ereader screen (Sony PRS-350) --> so the images should be split into 800x600 pixels chunks - equivalent for "smart cut" in pdflrf - join pages (so I don't have pages with just a couple of lines on them, cf. pdflrf) The Gimp is a wonderful piece of software, but I'm not willing to manually edit hundreds of images... Thanks for the quick reply! B. |
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04-05-2011, 04:11 AM | #4 | |
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Device: prs700, i-mate JAMin, smartq v7, GeeksPhone Zero, iPad 3rd Gen
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Quote:
Try gscan2pdf (gscan2pdf.sourceforge.net), splits, joins, crops and rotates. Also, interfaces with unpaper (http://unpaper.berlios.de/) for blacl areas removal and deskewing. Regards |
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Tags |
conversion, image magick, pdf, pdflrf |
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