Re: [NTO] scanning format
If you check most documents you have OCR'ed they will be TIF ,the images are
usually the way the owner want them saved in B/W or COLOUR.
----- Original Message -----
From: "Adrien Verlee" <adrien.verlee@...>
Sent: Thursday, March 17, 2011 9:16 PM
Subject: Re: [NTO] scanning format
> Op 15/03/2011 3:39, Axel Berger schreef:
>> PNG is the best supported lossless(!) graphics format and the one I
>> always scan to and sometimes convert later. For pure black and white and
> In fact, the problem as to which format the OCR software can import
> within a decade. Crystal ball!
> Yahoo! Groups Links
- Adrien Verlee wrote:
> Crystal ball!Anything that is massive now won't go away too soon, as too many
customers would be miffed. Look at GIF or IE6. I'd agree that Jpeg will
possibly always be better supported than PNG but the difference is not
enough to forego the advantages of the latter.
- Dave wrote:
> If you check most documents you have OCR'ed they will be TIF,Dave, I'm not sure what you are saying here, but I guess you're talking
> the images are usually the way the owner want them saved in
> B/W or COLOUR.
about graphics extracted from PDFs, where the OCRed text is behind the
page image. If so I disagree. It is true that the extraction, I use
pdfimages.exe from the XPDF package, yields uncompressed Tiffs. The
reason seems to be simply that the act of reading (and displaying)
includes the decompression already and the extractor makes do without
the extra complication of a compression step (rightly so, one task, one
But in all the PDFs I generate myself I notice that there is no recoding
but all my graphic material is included as is. Whatever I include, Jpeg
in all kinds of quality, PNG in B/W, gray, full colour, 256 colours, 16
colours (great for diagrams and extremely small, but makes PDF
exceedingly slow, so I don't use it), the size of the PDF follows
exactly the sum of the sizes of embedded graphics.
So my guess is you are a victim of a misconception here, but I may have
misunderstood or be wrong.