On Thu, 2003-12-25 at 11:42, Finn Bock wrote: > Hi, > > After 'fixing' the master-reference issue in my copy of the NIST test > suite, I ran the tests against 0.20.5 and 1.0dev and merged the result > side by side into a single .pdf file. > > You can download the result (1Mb) here: > > http://bckfnn-modules.sf.net/out-0.20.5-1.0.pdf > > For some reason the pdf does not display correctly in my browsers, so it > is better to download it. The merged pdf file is created using iText. > > The square to the left contains the output from 0.20.5 and the square on > the right the output from HEAD. > > Here is also a merge between the pdf files that comes with the NIST > suite and head: > > http://bckfnn-modules.sf.net/out-nist-1.0.pdf > > There is still a few issues left to fix <wink>. > > > Another way of using the test suite could be to compare a binary image > of the pages against some kind of reference. Has such a approach been > tried? Does anyone know of available software that can render a PDF as > an image file?
RedHat 9.0 (my system anyhow) includes a command 'pdftopbm' that will convert a PDF to multiple PBM (protable Bit Map) files that might be comparable. They would be convertable in to other formats such as PNG (or GIF for the patent-minded). I found the result pretty poor (ugly text badly in need of anti-aliasing). That might help contribute to keeping images similar. It would certainly help detect pixel-sized changes. That might help regression testing. There are suggestions on the Net that Ghostcript can do this sort of conversion as well. GIMP can read a PDF as well. When I tried it, I got a graphic for every pair of pages (my doc was over 133 pages). Perhaps some script-fu ... ? > regards, > finn -- John Austin <[EMAIL PROTECTED]>
