Your message dated Sun, 14 Jan 2024 07:59:34 +0100
with message-id <[email protected]>
and subject line Re: Bug#243674: pstopnm should pass -dTextAlphaBits=4 option
to GhostScript
has caused the Debian Bug report #243674,
regarding pstopnm should pass -dTextAlphaBits=4 option to GhostScript
to be marked as done.
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243674: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=243674
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--- Begin Message ---
Package: netpbm
Version: 9.25-9
Severity: wishlist
The 'pstopnm' utility, included in netpbm, is a wrapper around 'gs'.
At the moment it doesn't produce anti-aliased text, making the output
ppm files look quite nasty at screen resolution. To fix this the
program simply needs to pass an extra option to 'gs':
gs [...] -dTextAlphaBits=4 [...]
Alternatively 'pstopnm' could be changed to allow arbitrary extra
parameters to be passed to Ghostscript.
--- End Message ---
--- Begin Message ---
Version: 2:10.97.00-1
On 2004-04-14 Richard Jones <[email protected]> wrote:
> Package: netpbm
> Version: 9.25-9
> Severity: wishlist
> The 'pstopnm' utility, included in netpbm, is a wrapper around 'gs'.
> At the moment it doesn't produce anti-aliased text, making the output
> ppm files look quite nasty at screen resolution. To fix this the
> program simply needs to pass an extra option to 'gs':
> gs [...] -dTextAlphaBits=4 [...]
> Alternatively 'pstopnm' could be changed to allow arbitrary extra
> parameters to be passed to Ghostscript.
pstopnm nowadays has
-textalphabits={1,2,4}
This controls subsample antialiasing of text. Antialiasing is a
form of smoothing that eliminates jagged edges on characters.
Subsample antialiasing is a kind of antialiasing that uses sub‐
pixels in a box, and the value of this option is the size of
that box. 4 gives you the best looking output, while 1 causes
no antialiasing. Smaller numbers make pnmtops use less CPU
time.
Pstopnm uses Ghostscript's TextAlphaBits parameter for this.
The default is 4.
cu Andreas
--- End Message ---
