Bug 38549 - pdfimages should extract resolution information
Summary: pdfimages should extract resolution information
Status: NEW
Alias: None
Product: poppler
Classification: Unclassified
Component: utils (show other bugs)
Version: unspecified
Hardware: Other All
: medium enhancement
Assignee: poppler-bugs
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Reported: 2011-06-22 00:42 UTC by Torsten Bronger
Modified: 2011-07-06 02:15 UTC (History)
1 user (show)

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Description Torsten Bronger 2011-06-22 00:42:35 UTC
Currently, the dpi resolution of images extracted by pdfimages is lost.  pdfimages should embed the original resolution in the extracted JPEGs.  Additionally, TIFF should be an alternative to PBM/PPM since TIFFs can contain resolution information, too.
Comment 1 Denny Reeh 2011-07-03 13:07:11 UTC
same for me.

pdfimages extracts all images with 72 dpi.
i have a example: the image in the pdf is 300 dpi and 302x103 pixel width/height. the extracted JPG image was 72 dpi with 1258x428 pixel width/height. so i can recalculate the origin resolution.

if you have all these informations, it must be easy to extract the image with origin resolution and pixel width/height.


bug/show.html.tmpl processed on Mar 29, 2017 at 11:03:13.
(provided by the Example extension).