[gdal-dev] PDF Image Rendering issues with Poppler

[Robert Zermeno]

Thanks Even for the quick reply.   I have an older build of GDAL with poppler that works rendering the page I provided, but I am attempting to perform a full custom build of poppler with static builds of all third-party libraries.  Now, I cannot view the logo and just wondering if someone could provide a little insight how Adobe PDF stores the Logo image an in XObject. Is the image stored as a standard uncompressed RGB image, zipped image, png image?  I just need a little information on where to search within the Hex data of the PDF file to debug my problem. This questions probably should fall under the poppler project.  I will do that and I just chose to use GDAL as I am using GDAL API interface for PDF read/write.  Bob 


     On Tuesday, September 29, 2015 12:54 AM, Even Rouault <even.rouault at spatialys.com> wrote:
   

 Robert,

Works fine for me with poppler 0.35.0 on Linux and with GDAL trunk.

One key information you didn't mention is your GDAL version. If it is 1.11.2 
or older, poppler >= 0.31.0 isn't supported.
See https://trac.osgeo.org/gdal/ticket/6118

You can also test with the builds / SDKs at http://www.gisinternals.com/

Even

>  Gents,
> I downloaded poppler 0.35.0 and used CMAKE to produce VS2012 solution files
> with freetype, jpeg, png, zip, cairo on Windows 7.  I downloaded and
> linked against static libraries of png, lcms2, and zlib. I created a
> simple test PDF and uploaded at:  
> http://www.filedropper.com/littlecmslogo If you do not trust the hosted
> source, all I did was took little CMS Logo from their API specifications
> PDF and copy/paste into a new MS Word document with a line of text above
> the logo.  Saved the file as a PDF. Here are a few questions I would like
> to be answered:
> 1. Can someone explain why I cannot render this particular image?  2. What
> type of decoding/rendering issues am I having? 3. Did I forget to include
> another third-party package for poppler?  4. What are the recommended
> settings when building poppler for GDAL usage (i.e., what items within
> poppler should/requires to be enabled) ? 5. If I cannot get an answer for
> that, how can I look into the PDF document hex data or dictionary to see
> how the image was stored?
> 
> Thanks in advance,
> Bob

-- 
Spatialys - Geospatial professional services
http://www.spatialys.com


  
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