Quote:
Originally Posted by JSWolf
If the PDF has a text layer, then 1dollarscan is doing OCR and should be able to create an ePub.
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They actually do convert to other formats too, but we have to ask for it specifically:
https://1dollarscan.com/pricing.php
File Conversion
" We can convert your scanned PDF to many other files such as WORD, epub, txt, audio formats for audio books and many other file types. Please contact us with yours needs at
contact@1dollarscan.com "
Quote:
Originally Posted by ottischwenk
Text layers are not very likely for PDF scans
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They are pretty common thing nowadays, and I don't mean visible ocr-text layer, but the invisible one added behind the page (scan) image, and since its main function is search & highlight capability, it doesn't have to be very accurate, but for belletristic literature we can usually use it efficiently for pdf reflow function as well (eink readers use ocr text layer for pdf reflowing), because there are not as many problematic signs and formulas, tables, diagrams etc. as with scientific books and the page layout is usually simpler.
Koreader app can even reflow pdf scans without an ocr layer, as we read them page by page, using k2pdfopt engine, so, we don't have to reflow them for our specific eink reader using k2pdfopt app on our PC/Mac computer beforehand, as in the past.
But those who don't have Koreader app installed on their eink reader, or their 6" or 8" eink reader is old and slow or with a little working memory, can simply convert (reflow) pdf scans or A4 pdf documents using k2pdfopt app and their eink reader will flip through such reflowed pdf as fast as the newer models, with a great font accuracy (very important for scientific documents).
https://www.willus.com/k2pdfopt/
" K2pdfopt optimizes PDF/DJVU files for mobile e-readers (e.g. the Kindle) and smartphones. It works well on multi-column PDF/DJVU files and can re-flow text even on scanned PDF files. It can also be used as a general PDF copying/cropping/re-sizing/OCR-ing manipulation tool. It can generate native or bitmapped PDF output, with an optional OCR layer. There are downloads for MS Windows, Mac OSX, and Linux. The MS Windows version has an integrated GUI. K2pdfopt is open source. "