Quote:
Originally Posted by Bookchin
Thanks. I read the Adobe instructions for scanning that you linked to, and I'm still not too sure what the difference is between Clearscan and Searchable Image, other than it says Clearscan replaces the fonts with closely related ones, or something.
Yes, I think 20MB per 500 page book is good enough for me, as well. I don't need to drastically reduce the file size, otherwise I would probably just convert them to DJVU files.
What do you mean by 'double-paged' scans?
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As I've suggested, the best way is to experiment yourself with different kind of books, e.g. using 30-40 sample pages (scanned at 300 dpi and 600 dpi), first with a few pictures and normal size letters therein, then some other book with more pictures/graphs and smaller sized letters etc., and applying clearscan and other styles with 300 and 600 dpi downsampling.
Here is clearscan mode compared to the exact image mode, offering significantly improved visual quality of the text and averaging three times smaller files at 300 dpi and seven times smaller at 600 for aproxim. the same processing time.
https://blogs.adobe.com/acrolaw/2009...rscan_is_smal/
R.Borstein's blog with Tips and Techniques
https://blogs.adobe.com/acrolaw/cate...r-recognition/
By 'double-paged' scan I mean the book scanned with its both pages applied (left and right) at once, not separately, as here from 2:30 min. in this useful Scantailor tutorial when those double-page scans are automatically being rotated and split in half.
Post-processing of scanned or photographed pages using Scan Tailor.
https://youtu.be/N1WK2J1Dr-s?t=144
https://vimeo.com/12524529
Quick and easy pdf splitting and cropping using Briss
https://superuser.com/questions/7910...e-pass/1303929
https://www.youtube.com/watch?v=4Wp4RIYUqC8
https://www.youtube.com/watch?v=TWfPWUf5y-s
Abbyy would split the scans automatically, and we can also split pages using Acrobat, Foxit or another pdf editor using Print/Tile function (as shown in the video below), but I'd rather use Briss, k2pdfopt or Scantailor for their additional cropping capabilities.
Page splitting using Print/Tile function
https://www.youtube.com/watch?v=PYlk3FtfZSU
Javascript-plugin-to-automatically-split-pages-in-adobe-acrobat
https://www.mobileread.com/forums/sh...56&postcount=3
https://www.mobileread.com/forums/sh...15&postcount=8
Pdf cropping in Acrobat, or some pdf editor with similar cropping options (all pages, just selected pages, or even & odd pages separatelly)
https://www.youtube.com/watch?v=-HIIqj-p3Kk
We can also use Acrobat's cropping tool for splitting the whole double-page pdf.
First we have to crop odd and even pages and save them as separate files, then we have to split those two files into separate pdfs using split command, but used together with the "output options" button and then with "add label - before original name" chosen therein, so that we can quickly and easily merge (concatenate) them ordered as in the original pdf, part_1_left.pdf, part_1_right.pdf, part_2_left.pdf etc. instead of a tedious manual way as for the 3rd step in the video below, or instead of using some 3rd party (renamer) app for the quick renaming of the files:
https://www.youtube.com/watch?v=FDDt0hQTPKk