[Okular-devel] [Bug 274910] Needs PDF image smoothing

[Ralph Moenchmeyer]

https://bugs.kde.org/show_bug.cgi?id=274910


Ralph Moenchmeyer <rm at anracon.de> changed:

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                 CC|                            |rm at anracon.de




--- Comment #7 from Ralph Moenchmeyer <rm anracon de>  2011-08-22 08:51:34 ---
I use KDE 4.7 on an OPensuse 11.4 system. Today, I had a look at PDF documents
generated from Libreoffice with screenshots from some web pages included. I was
almost shocked by the bad image quality Okular produced. So I had a look at
other PDF viewers. 

The absolutely best image qualities regarding smoothing were given by "evince"
and "ePDFviewer" - and in contrast to other viewers for all zoom factors ! It
looks as if "evince" and "ePDFviwer" use the same smoothing and zoom methods. 

Adobe's Reader in my case only produces smooth images for zoom factors 150% and
larger. Below the quality is also bad. 

XPDF's results are as bad as Okular's.   

So when implementing smoothing and zooming methods within Okular for images one
should adapt the smoothing/zooming technology of "evince" and "ePDFviewer".

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