Hi Andreas,
you'll have to use JAI to do the conversion from YCbCr to RGB and then
iText to convert to PDF. This should work, but please take the performance
impact of these operations into consideration. You don't have any problems
if this only runs in some kind of batch processing with no one waiting for
it. If you want to convert on the fly after a user request, only the iText
tiff to PDF conversion can be too slow to be waited for and very memory
and cpu excessive depending on the size of the image. Just a few pages are
ok. Much more will need testing on your production hardware.
Now you only need to find a way to distinguish between RGB tiff files and
YCbCr tiff files with incorrect directory ;)
Best regards
Benjamin
Von: Paulo Soares <[email protected]>
An: Post all your questions about iText here
<[email protected]>
Datum: 27.02.2012 13:35
Betreff: Re: [iText-questions] Problem converting jpeg-coded
multipage tiff into pdf
iText doesn't support YCbCr.
Paulo
On Mon, Feb 27, 2012 at 11:45 AM, Andreas Wagner
<[email protected]> wrote:
> Hi there,
>
> we evaluate itextpdf to convert tiff images to pdf. Now it seems that
some tiffs are converted with damaged colors. We have some multipage tiffs
that are jpeg YCbCr-coded.
> When we use com.itextpdf.text.pdf.codec.TiffImage to read the tiffs data
and then put it into a pdf document, then the colors of the pages are
damaged(looking kind of pink and green)
> So we tried to figure out what the problem is. In the tiff-directory the
pages are declared as rgb-coded, but they're not(actually they are coded
YCbCr). So we told our customer that their images are broken.
Unfortunately the customer cannot fix that problem, so we have to find a
solution.
> Does anyone has an idea, how to solve that?
>
> Andreas
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iText(R) is a registered trademark of 1T3XT BVBA.
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Please check the keywords list before you ask for examples:
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