Pepijn Schmitz schrieb:
*BUMP*
I thought I might try again with this question, having received no
replies at all the previous time. In fact I haven't seen any traffic on
this list, is it even being read?
The question is: how can I find out from a PDF at which aspect ratio to
display an embedded fax-originated TIFF?
Pictures are saved in their original format. The scaling is done by the
pdf. If you insert a graphic as PDXObject to a page you have to mention
the starting coordinates and the scaling of both axes relative to their
original size.
This means that you have to extract the picture and you have to get the
scalingfacros from the corresponding XObject.
Andreas
Cheers,
Pepijn
Pepijn Schmitz wrote:
Hi everyone,
I'm using PDFBox to receive faxes. Our fax service provider receives
them and emails them to us as PDF attachments. I'm reading the emails,
extracting the PDF attachments and then using PDFBox to extract the TIFF
images from the PDF's.
This works great (after I found out I had to install the JAI ImageIO
Tools), but there is one problem: for some faxes the TIFF's are only
half-height. The whole page is there, but is is squashed in the vertical
direction. I imagine that these are faxes which were sent at some kind
of "coarse" setting.
The thing is, if I open these PDF's in Adobe Reader they are displayed
with the correct aspect ratio. So somewhere in the PDF there must be
information telling Adobe Reader to scale the image up in the vertical
direction, but I don't know how to get at this information.
Can someone here help me with this problem? Do you know how this
information is stored in the PDF, and how I could get at it with PDFBox?
Is it stored in the TIFF itself somehow? I could email interested
parties one of the PDF's if it would help.
Kind regards,
Pepijn Schmitz
--
Auf der Verpackung stand "benötigt Windows 9x/2000/XP oder BESSER", also
habe ich Linux installiert.
