I am using two different systems:
A: SUSE Linux Enterprise Server 11 (x86_64) VERSION = 11 PATCHLEVEL = 2 with GPL Ghostscript 8.62
B: SUSE Linux Enterprise Server 12 (x86_64) VERSION = 12 PATCHLEVEL = 5 with GPL Ghostscript 9.53.3
I convert the same postscript file jjtest3.ps to png using the same command:
/usr/bin/gs -I/wws/daten/var -dNOPAUSE -sDEVICE=png16m -dUseFastColor=true -r120x120 -sOutputFile=output.png jjtest3.ps -c quit;
An example off output.png from system A is in the file sles11_2.png (see the link below).
An example off output.png from system B is in the file sles12_5.png (see the link below).
The problem is, that the png created on system B is not in that quality as from system A. There are missing some thin lines – see the examples. The GS option -dGraphicsAlphaBits=4 yields better result, but I don’t want to use it, because the output device is an e-ink display, which uses only 100% black, white and red colors. So the result png should have only 2 colors (red, white). My question is: Which Ghostscript options under the GS version 9.53 would yield the same (or better result) as under the version 8.62? Or any other ideas? I think a downgrade to the older GS version on SLES12 system is not really a good option for the future.
The content of the Postscript file jjtest3.ps is:
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lib_logo_nr_00639
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