From: Grant Edwards <grant.b.edwards@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: [gentoo-user] Re: [OT] Re: PDF: convert to grayscale
Date: Mon, 28 Feb 2011 15:08:23 +0000 (UTC) [thread overview]
Message-ID: <ikgdp6$l2h$1@dough.gmane.org> (raw)
In-Reply-To: 87wrkle2nr.fsf_-_@ist.utl.pt
On 2011-02-27, Nuno J. Silva <nunojsilva@ist.utl.pt> wrote:
> Michael Orlitzky <michael@orlitzky.com> writes:
>
>> On 02/08/11 08:50, Nuno J. Silva wrote:
>>> Does anyone know a tool (other than ghostscript) that is able to convert
>>> a PDF (or postscript) to grayscale?
>>
>> A laserjet? =)
>
> That makes me wonder... in a color printer, I expect it not to print any
> color when it has no color ink, but do grayscale printers apply some
> conversion internally, to make sure that e.g. plain cyan is still
> visible (instead of making it white)?
No.
No matter what transformation you use from a 3-dimensional space into
a 1-dimensional space, there will be sets of values that differ in the
3-dimensional space which map to identical values in the 1-dimensional
space.
--
Grant Edwards grant.b.edwards Yow! I'm in direct contact
at with many advanced fun
gmail.com CONCEPTS.
next prev parent reply other threads:[~2011-02-28 15:10 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-08 13:50 [gentoo-user] PDF: convert to grayscale Nuno J. Silva
2011-02-11 20:40 ` Michael Orlitzky
2011-02-27 18:46 ` [gentoo-user] [OT] " Nuno J. Silva
2011-02-28 15:08 ` Grant Edwards [this message]
2011-02-28 15:33 ` [gentoo-user] " Willie Wong
2011-02-11 20:55 ` [gentoo-user] " Grant Edwards
2011-02-11 21:08 ` [gentoo-user] " Alex Schuster
2011-02-27 13:11 ` [gentoo-user] " Nuno J. Silva
2011-02-11 22:07 ` [gentoo-user] " Paul Hartman
2011-02-11 22:40 ` Matthew Summers
2011-02-27 12:53 ` [gentoo-user] " Nuno J. Silva
2011-02-27 12:59 ` Nuno J. Silva
2011-02-28 4:37 ` [gentoo-user] " Valmor de Almeida
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