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IDProjectCategoryView StatusDate SubmittedLast Update
0001554ScribusInternalpublic05-Jan-17 08:5706-May-09 22:09
Reporterandyprior 
Assigned To 
PrioritynormalSeverityfeatureReproducibilityalways
StatusacknowledgedResolutionopen 
PlatformanyOSanyOS Versionany
Product Version1.3 
Target VersionFixed in Version 
Summary0001554: PDF Creation - image downsampling philosophy
DescriptionIn the PDF creation dialogue -
The selection of "image downsampling" results in the downsampling of both imported graphics (e.g. a jpg photo) and images embedded in an imported PDF (e.g. a table from OpenOffice). Subsequently, when viewed on the screen, the downsampled PDF image is of very poor quality and unsuitable for distribution to third parties for screen viewing.

I believe this to be the wrong philosophy. The user should be given the option not to downsample imported pdf images.
Steps To ReproduceCreate 2 graphics boxes, import a high res jpg in one and a pdf table exported from OO in the other (or an eps from OO Draw). Select "PDF creation" dialogue, select "image downsampling", set to 100 dpi. View PDF in Acrobat. Photo is fine but table is dreadful.
Additional InformationIn the file "pdflib.cpp":
Lines (there are 2) "QMIN(Options->PicRes,Options->Resolution)" is responsible for the described behaviour.

For my purposes, I have changed this to read "QMAX(Options->PicRes,
Options->Resolution)".

A proper solution would be to use another check box to control "PicRes".
TagsNo tags attached.
Attached Files

- Relationships
related to 0002745new PDF Export: Image resampling needs more control over when to resample 
related to 0003560closedfschmid PDF export should not `upsample' images 
parent of 0003561feedback Default settings for image export should be more flexible 
related to 0002486closed Change meaning of "Quality" in PDF Export 
related to 0003697assignedplinnell PDF-Export / General / GroupBox "Image Compression method" 
related to 0003696closedplinnell Tooltip PDF-Export / General / Compression Method: Remove confusing info from tooltip 
Not all the children of this issue are yet resolved or closed.

-  Notes
(0004129)
plinnell (administrator)
05-Apr-07 22:31

moving to 1.3+ 1.2.x is now stable
(0010209)
mhanski (developer)
06-Apr-20 23:35

Reminder sent to: wdobler

what do you think of it?
(0010529)
wdobler (reporter)
06-Apr-27 07:44

[Sorry for reacting that late -- I was on vacation]
This sounds like a good suggestion.
As long as PDF is imported as raster graphics, _any_ downsampling of imported PDF is problematic; with large images, on the other hand, downsampling can be highly desirable. And these two constraints will frequently meet in the same document.

[I guess issue 0003561 is easier to fix, though, as it is only about defaults in the user interface, whereas this one probably requires tracking of where a raster image came from.]

- Issue History
Date Modified Username Field Change
05-Jan-17 08:57 andyprior New Issue
05-Apr-07 22:31 plinnell Note Added: 0004129
05-Apr-07 22:31 plinnell Severity minor => feature
05-Apr-07 22:31 plinnell Product Version 1.2.1 => 1.3
06-Apr-08 17:19 mhanski Relationship added related to 0002745
06-Apr-08 17:20 mhanski Relationship added related to 0003560
06-Apr-20 23:33 mhanski Relationship added related to 0003561
06-Apr-20 23:34 mhanski OS Linux 2.6 kernel => any
06-Apr-20 23:34 mhanski OS Version SuSE 9.2 => any
06-Apr-20 23:34 mhanski Platform Athlon 2500+ => any
06-Apr-20 23:34 mhanski Build 8 =>
06-Apr-20 23:35 mhanski Note Added: 0010209
06-Apr-21 15:48 mhanski Relationship added related to 0002486
06-Apr-27 07:44 wdobler Note Added: 0010529
06-Apr-27 22:58 mhanski Relationship added related to 0003697
06-Apr-27 23:11 mhanski Relationship added related to 0003696
06-May-09 21:47 mhanski Status new => feedback
06-May-09 21:55 plinnell Relationship replaced parent of 0003561
06-May-09 22:09 plinnell Status feedback => acknowledged



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