scantailor-universal
spreads
scantailor-universal | spreads | |
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12 | 1 | |
170 | 116 | |
- | 0.0% | |
4.1 | 0.0 | |
9 months ago | about 8 years ago | |
C++ | Python | |
GNU General Public License v3.0 or later | GNU Affero General Public License v3.0 |
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scantailor-universal
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Looking for a website or tool that can enhance contrast and darken PDFs (like the magic effect of camscanner)
You could try ScanTailor: https://scantailor.org/
- Σκανάρισμα πανεπιστημιακών συγγραμμάτων
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Z-Library to Let Users Share Physical Books
There's also https://scantailor.org/ (and a maintained fork at https://github.com/4lex4/scantailor-advanced ) which semi-automates unwarping and other corrective tasks in scanned books.
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Is there a way to convert "photographed text" in to just "text" in a .pdf file?
Scantailor (https://scantailor.org) is the tool for self-scanned books that exist in images (png, jpg, etc). However, I usually use Irfanview with PDF plugin (https://irfanview.com - download both Irfanview and the Plugins from this home page) I have elsewhere in r/PDF shown how you can do batch splitting of two-page scans, clean up muddy pages (yellowed or browned) . In the Reddit search box, search for Irfanview in this subreddit. Irfanview has lots of commands, so the instructions are very specific, and which I did trial and error on before posting. This is because Irfanview is an image processor and viewer, and PDF transformations are recent to the last couple of years. Note that you will want to run OCR after Irfanview processing, as Irfanview treats PDFs as images (which is what you have now).
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Is anyone backing up/reploading Archive.org's scanned books to Libgen, etc.?
Scantailor https://scantailor.org/ might be useful.
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Where do you BUY your ebooks from?
scantailor is a good open source option that has a lot of features centered towards this process.
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OCRmyPDF: Add an OCR text layer to scanned PDF file
I use OCRmyPDF on a regular basis to OCR journal articles my library sends me.
I've found it works great on English but (with appropriate language packs installed) works poorly on Greek and Hebrew. It also makes no effort to understand the layout of pages (e.g., tables).
The project is fantastic, though. I've often considered building a web frontend that cleans up PDFs and then OCRs them using OCRmyPDF.
For cleaning, check out https://scantailor.org/
- FOSS bottle label scanner
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Tutorial on book digitization
Next is the cleanup. Scan Tailor is the best game in town for this, but it's a dead project. Instead, there are two forks that have picked up where the original developers left off. Scan Tailor Advanced is my current fork of choice, though Scan Tailor Universal tries to add new usability features. For whatever reason, only Advanced makes full use of my CPU, so it's several times faster than Universal for the time being.
- DIY Book Scanner
spreads
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DIY Book Scanner
Spreads[0] is probably what you are referring to. Some backstory:
I saw the diybookscanner community - which at that point mostly had Daniel Reetz [1] as its active contributor- struggle with mechanical contraptions for triggering cameras and very little software experience. I built a simple proof of concept to reliably trigger cheap consumer cameras using software. I built it on CHDK[2], the Canon Hack Development Kit, alternative firmware for cheap consumer cameras. The proof of concept worked.
I then had a fairly large number of book scanner kits built and shipped mostly around the EU [3]. More of a work of love than a business really, even if it was formally under an llc umbrella. Johannes initially was just a customer. He wanted to build a better software solution, and within the spirit of the project did so as free software. I tried to support him at this as well as I could, setting up build infrastructure, trying to reel in more people, getting him some cameras to test, get the amazing CHDK people to port to new camera models, ...
Then real life intervened indeed.
Johannes, if you read this, I'm still grateful for the experience of having worked with a great developer like you!
[0] https://github.com/DIYBookScanner/spreads
What are some alternatives?
scantailor-advanced - ScanTailor Advanced is the version that merges the features of the ScanTailor Featured and ScanTailor Enhanced versions, brings new ones and fixes.
bookscan - Documentation and scripts for book scanning using free software tools
OpenCV - Open Source Computer Vision Library
pi-scan - Pi Scan is a simple, robust capture appliance for book scanners. It runs on a Raspberry Pi 2.
rtabmap - RTAB-Map library and standalone application
docus - Android application for scanning and managing documents.
doctr - docTR (Document Text Recognition) - a seamless, high-performing & accessible library for OCR-related tasks powered by Deep Learning.
naps2 - Scan documents to PDF and more, as simply as possible.
OCRmyPDF - OCRmyPDF adds an OCR text layer to scanned PDF files, allowing them to be searched