We have done something similar. We capture the points/strokes of a
signature and create an image out of it. We use the 'official' signature
field of the pdf standard and sign the pdf document. For the visual
representation we use that signature image. No problem doing that using
iText. Have a look at the following example:
http://itextpdf.com/examples/iia.php?id=222
In the method 'public void signPdfFirstTime(String src, String dest)'
you can see how to set an image as appearance:
PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
appearance.setImage(Image.getInstance(YourImageAsAByteArray));
The advantage of that is that afterwards your document is digitally signed
and e.g. with adobe reader you are able to verify your signatures and the
integrity of a document. But if you do not need that - then just flatten
the signature fields afterwards and you only have your image inside your
PDF...
2013/8/5 Josh Smith <jesmit...@gmail.com>
> m working on a process for my company to create a "digitized signature".
> Essentially we are going to capture the pen strokes of a signature via a
> javascript library and then I need to be able to place those into an
> existing PDF.
>
> Because of the nature of the PDF (it has tables that have repeating
> content) I can't always know the exact absolute position of where the
> signature image should get dumped. The hope was to be able to take a text
> field and replace/fill it with the image.
>
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