If you want a CCITTFax decoder look at
com.lowagie.text.pdf.codec.TIFFFaxDecoder.java. Look at TiffImage.java for
info on how to use it. You can extract streams with
PdfReader.getStreamBytes().
----- Original Message -----
From: "John Pruitt" <[EMAIL PROTECTED]>
To: "Paulo Soares" <[EMAIL PROTECTED]>
Cc: <itext-questions@lists.sourceforge.net>
Sent: Tuesday, November 22, 2005 7:25 PM
Subject: Re: [iText-questions] CCITTFax Decode
I believe the following (taken from CCITTFaxDecodeFilter.java of pdfbox)
might explain why pdfbox does not decode my pdfstream and produce the
images I need:
public void decode( InputStream compressedData, OutputStream result,
COSDictionary options ) throws IOException
{
org.pdfbox.util.ErrorLogger.log( "Warning: CCITTFaxDecode.decode is
not implemented yet, skipping this stream." );
}
The decoder has not been implemented. I have been searching for 2 weeks
now for a decoder.
John
Paulo Soares wrote:
Use pdfbox to extract the images.
----- Original Message ----- From: "John Pruitt" <[EMAIL PROTECTED]>
To: <itext-questions@lists.sourceforge.net>
Sent: Tuesday, November 22, 2005 6:20 PM
Subject: [iText-questions] CCITTFax Decode
My company has been using iText successfully to convert multi-page tiff
files into encrypted pdf files for some time now. I am working on a
project in which I need to convert these pdf files back to multi-page
tiffs. I am aware that iText is primarily designed for creating pdfs as
opposed to extracting content from pdfs, however this is a simple,
specific case in which each page consists of a single, full-page image.
I was wondering if there might be an easy way to extract these images
with iText? I am looking through the com.lowagie.text.pdf.codec classes,
but have yet to understand how I might be able to use them. I have also
looked into another Java pdf library called "pjx." With pjx I am able to
get the PdfStream data for the images out, however I am having trouble
finding a CCITTFax decoder to decode the stream. Ideally, I would like
to get the images in a java.awt.* format.
If anyone could provide any insight, leads, links, sample code, etc, it
would be greatly appreciated.
Thank you very much,
John
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