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From Luis Bernardo <lmpmberna...@gmail.com>
Subject Re: Tiff image - color distortion
Date Tue, 28 Jan 2014 23:01:01 GMT

Two questions about CMYK on the same day!

The JDK JPEG image handling functions cannot handle CMYK. If the images 
include a color profile then FOP can convert the images to RGB. To get 
FOP generate a PDF with images that preserve the CMYK colors you need to 
use a ImageIO library like TwelveMonkeys. Get it, compile it and place 
the JPEG related jar in the FOP lib directory (note that you will also 
need to add some of the core jars).

On 1/28/14, 5:12 PM, Valentina wrote:
> Hi I am including Tiff image in Pdf output.
> The problem is that it is not rendering the image correctly. For 
> example, the original Tiff image has much stronger contrast (i.e. some 
> very dark sections, some very light sections), whilst the pdf output 
> image appears more greyish and noisy.
> Is this a known issue?
> Also I looked here:
> http://xmlgraphics.apache.org/fop/1.1/graphics.html#tiff
> "FOP can embed TIFF images without decompression into PDF, PostScript 
> and AFP if they have either CCITT T.4, CCITT T.6, or JPEG compression. 
> Otherwise, a TIFF-capable Image I/O codec is necessary for decoding 
> the image.
> There may be some limitation concerning images in the CMYK color space."
> Could someone explain the meaning of those sentences. Thanks.

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