Thanks Andreas. That will help. On Jul 21, 2011, at 2:45 AM, Andreas Lehmkuehler wrote:
> Hi, > > Am 20.07.2011 23:36, schrieb Ken Bowen: >> Hi all, >> >> We have working code based on >> >> org.apache.pdfbox.examples.pdmodel.RubberStampWithImage >> >> which inserts jpeg b/w signatures with white backgrounds into pdf docs. Now >> we need to refine this to make the white background transparent. I see that >> PDJpeg.getRBGImage() makes use of soft masks: >> >> // If there is a 'soft mask' image then we use that as a transparency >> mask. >> >> [Soft masks are new item for me.] My question is: >> >> Has anyone made use of this, and if so, do you have advice for me, and/or >> examples you could provide? > Hmm, what exactly are you looking for? [1] shows how to render such an image > and [2] is about adding one to a pdf. > >> Many thanks in advance, >> Ken > > HTH > Andreas Lehmkühler > > [1] https://issues.apache.org/jira/browse/PDFBOX-323 > [2] https://issues.apache.org/jira/browse/PDFBOX-513
