[Ipe-discuss] PNG import quality

[Kostas Oikonomou]

(I am resending these messages, I forgot to cc the ipe list)

Hi Otfried,

I have exported an OpenOffice drawing to PDF, and I am 
converting it to PNG using Ghostscript.  The specific command is

gs -dSAFER -dBATCH -dNOPAUSE -sDEVICE=png48 
-dTextAlphaBits=4 -r100 -sOutputFile=nperf-internal.png 
nperf-internal.pdf

When I view the resulting png file with, say Emacs or the 
Gimp, I see a very good quality image. But when I insert the 
image in my Ipe presentation, it looks much worse.  Do you 
have any idea as to what might be going on?

(part 2)

I now notice that Ghostscript etc is really irrelevant.  I 
used Ghostscript to convert because I thought that exporting 
straight to PNG from OpenOffice wasn't yielding good enough 
quality.

But I now see that a straight OO export produces PNG files 
that look good in Emacs and Gimp, and bad in Ipe.


						Kostas