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Bug#564546: marked as done (ghostscript: inferior image scaling)

Your message dated Sun, 24 Nov 2024 15:53:45 -0600
with message-id <2762010.mvXUDI8C0e@riemann>
and subject line Re: ghostscript: inferior image scaling
has caused the Debian Bug report #564546,
regarding ghostscript: inferior image scaling
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
564546: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=564546
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: ghostscript
Version: 8.70~dfsg-2
Severity: wishlist


A PDF file consisting of a 300 DPI page-size image, generated by
printing from Open Office Draw to the CUPS PDF converter, is poorly
rendered by both Evince and the GIMP, so I'm making a guess that the
problem lies in Ghostscript.  It seems to be downsampling images by
skipping pixels rather than averaging them.  I've attached snippets of
the image (a) at its original 300 DPI, (b) scaled poorly to 100 DPI by
Ghostscript, and (c) scaled well to 100 DPI by the GIMP.

John Lindgren


-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.30-2-686 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages ghostscript depends on:
ii  debconf [debc 1.5.28                     Debian configuration management sy
ii  debianutils   3.2.2                      Miscellaneous utilities specific t
ii  defoma        0.11.10-4                  Debian Font Manager -- automatic f
ii  ghostscript [ 8.70~dfsg-2                The GPL Ghostscript PostScript/PDF
ii  gs-common     8.70~dfsg-2                Dummy package depending on ghostsc
ii  gsfonts       1:8.11+urwcyr1.0.7~pre44-4 Fonts for the Ghostscript interpre
ii  libc6         2.10.2-2                   GNU C Library: Shared libraries
ii  libgs8        8.70~dfsg-2                The Ghostscript PostScript/PDF int

Versions of packages ghostscript recommends:
ii  psfontmgr                     0.11.10-4  PostScript font manager -- part of

ghostscript suggests no packages.

-- no debconf information

Attachment: 100-dpi.png
Description: PNG image

Attachment: 100-dpi-ideal.png
Description: PNG image

Attachment: 300-dpi.png
Description: PNG image


--- End Message ---
--- Begin Message --- 
> On Sat, 09 Jan 2010 23:45:30 -0500 John Lindgren <john.lindgren@tds.net> 
> wrote:
> > Package: ghostscript
> > Version: 8.70~dfsg-2
> > Severity: wishlist
> 
> It's now 13 years on, so I have to first ask whether this issue still 
remains?
> 
> > A PDF file consisting of a 300 DPI page-size image, generated by
> > printing from Open Office Draw to the CUPS PDF converter, is poorly
> > rendered by both Evince and the GIMP, so I'm making a guess that the
> > problem lies in Ghostscript.  It seems to be downsampling images by
> > skipping pixels rather than averaging them.  I've attached snippets of
> > the image (a) at its original 300 DPI, (b) scaled poorly to 100 DPI by
> > Ghostscript, and (c) scaled well to 100 DPI by the GIMP.
> 
> If the issue does remain, can you provide a pdf file and command line that 
> demonstrates the problem?

No response was received, so am closing this bug.
-Steve

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