Quote:
Originally Posted by markom
I guess, after OCR-ing a scanned pdf (even as exact pdf image i.e. OCR layer in the background), any better e-reader there should be able to reflow it, but showing only reflowed OCR layer, not reflowed front image itself and pictures.
After OCR-ing we can also use highlighting, search, dictionary etc. so it's always good idea to do it.
If we've been reading scientific pdfs though and cannot allow a single OCR error, then we can reflow pdf image itself, using k2pdfopt, that not only reflows front image itself but our e-reader should also flip through such reflowed pdf faster (than using its own reflow mode or apps) and all the pictures and tables shall also stay there visible.
Since t68 is about 5.43" wide (13.8 cm) (1440 @ 265 dpi) in landscape, there is usually no need to use k2pdfopt's reflow mode for A5 books or those smaller than A4/letter size, but just its fitwidth mode in landscape instead (i.e. zoomed text without margins, 2-3 screens per page).
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OCR'ing does help, I admit, but with a less than perfect scan, the end result can be unpleasant to the eye, taxing on the brain to comprehend/adjust to.
I recently tried to reflow a PDF with colored background patterns using k2pdfopt. Since the background wasn't white, the end result looked almost like copy pasted strips of words with grey background pasted on a white sheet of paper.
Don't get me started on how k2pdfopt shred the images/tables into pieces on another PDF , although with proper black text on white Background. Calibre did a good job in this case, properly reflowing text, while keeping images/tables intact.
I'm all praise for k2pdfopt, at least it gives us a choice, but it too has its limitations.
Of course, all this is for A4 or comparable size documents. No need to modify A5 size or smaller documents for my M96.
