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Ask Slashdot: State-of-the-Art In Amateur Book Scanning?
An anonymous reader writes: I have a shelf full of books and other book-like things ranging from old to very old that I would like to turn into PDFs (or other similarly portable format), and have been on a slow-burn quest for the right hardware and method to do so on a budget. These are mostly sentimental — things handed down over generations, and they include family bibles, notebooks, and photo albums, as well as some conventional — published, bound — books from the late 19th and early 20th Century. None of them are especially valuable as antiques, as far as I know; my goals in preserving them are a) to make them available to other people in my family who are into genealogy or just nostalgia, and b) so I can read some of those old, interesting books (et cetera) without endangering them any more than it takes to scan them once. I was intrigued by the (funded, but not yet available) scanner mentioned earlier this year on Slashdot; it seems to do a lot of things right, but like any crowdfunded project, the proof is in the pudding, and the pudding hasn't yet arrived. It's also cheap, and that fits my household budget. What methods and hardware are you using to scan old documents? Any tips you have from a similar project, with regard to hardware, treatment of the materials being scanned, light sources, file formats, clean-up and editing tools, file-size-vs-resolution tradeoffs? In the end, I'm likely to err toward high-resolution scans, since they can be knocked down to size later if need be, but I'd be interested in hearing about what tradeoffs you've found to work for you.
One big question that I'd like to have answered: Is there stand-alone Free / Open Source software, or even just cheap software (I am mostly on Linux, by choice, but won't leap onto a sword to keep my Free Software purity) that makes for easy correction of the distortion introduced by camera-based imaging? If I could easily uncurl and keystone-correct pages, then a lot of input methods (even my phone) are suddenly much more attractive. My old Casio camera could do this 10 years ago, but I haven't found a free software desktop utility that lets me turn photos into nicely squared-up pages.
One big question that I'd like to have answered: Is there stand-alone Free / Open Source software, or even just cheap software (I am mostly on Linux, by choice, but won't leap onto a sword to keep my Free Software purity) that makes for easy correction of the distortion introduced by camera-based imaging? If I could easily uncurl and keystone-correct pages, then a lot of input methods (even my phone) are suddenly much more attractive. My old Casio camera could do this 10 years ago, but I haven't found a free software desktop utility that lets me turn photos into nicely squared-up pages.
If you're looking for a project, what we use at my university library to scan some of the rarest and most delicate books on the planet, is definitely achievable at home. It's simply a table with interchangeable wedge shaped foam pieces, and a rack above with two cameras pointing down. Since the book is on a v cradle, the pages lay flat. You can change the angle and position of the cameras to point squarely at the pages. There's a pedal that will snap a picture with both cameras at once, so once you've got it set up, all you need to do is flip the pages and hit the pedal. You might need to readjust if the book is particularly thick, but that's all pretty intuitive once you're used to the setup.
I would suggest you look here http://www.diybookscanner.org/...
I'm planning to do much the same thing as you myself, but I've still not decided how to do it and other things have been occupying my attention recently, so I've not kept up with developments for a year or so.
There are plenty of ideas there and suggestions for software and workflows that will do what you want .
N.B. this user is far too lazy to write a witty and intelligent sig.
Why is that being modded down? The copyright gods demand blood. This person is in violation.. Just read that little notice on the first or second page... "All rights reserved. No part of this book may be reproduced in any form..."
Nobody modded him down. He's from Gay Nigger Association of America. I'm not joking, or trolling, or trying to be racist, that's the actual name of the group he represents, more details about them here:
https://en.wikipedia.org/wiki/...
He gets down modded so much that all of his posts are -1 right out the gate.
The software piece you mentioned for turning scans into nice clean rectangles exists as "unpaper". Here's one fork: https://www.flameeyes.eu/proje...
The people who have bothered to fork and improve unpaper probably did so because they did a project similar to yours, so you might ask them about other tips and resources.
As someone else said, while pdf is convenient for READING book, it's not a particularly great format for archiving a collection of images which you may want to convert to another format later. There are several good grayscale image fomats to choose from. To order those images into a cohesive document, perhaps with separate chapters, one could produce html via a tiny Perl or shell script. That would preserve the images in their native format for later conversion as needed in the future.