Re: Darn you, stochastic dithering! I shall be avenged!

On Tue, 20 Jul 2004, Robert L Krawitz wrote:

Oh, hey!  Fancy meeting you here.

> You can probably do it by setting the density to 2.0 and making sure
> that you're always sending either 0 or 255, but this won't entirely
> work at high resolution (use Very Fast dithering).

Well, I'm planning on making it easy to copy on cheap copiers,
so high resolution isn't really an issue with me.  I'm also
planning on making it for higher resolutions, but that's going
to use different dithering mechanisms.

> If you think about it, "no dithering" doesn't really make much sense;
> if you send levels other than 0 or 255, the driver has to dither it
> somehow.

I think the problem is the stochastic dithering, which turns a
given picture element into a mishmash of densities on the
printed page.  I guess I do want a dithering algorithm, but I
want it to be something like: every third point, make a dot, or
every fifth point.  This stochastic stuff is just going to make
copiers confused.

By the way, once I'm sure that my halftoning doesn't make the
image look terrible, I'll be posting a link to you-know-where.
And possibly here, too.

...One upgrade (and discovering that I had it set as a
Postscript 2 printer while Deskjet 900 series had been an
option) later...

And, that's pretty much what Very Fast looks like now.  The
halftoning looks good enough, so I'm happy!

-- 
|Andrew A. Gill                       |I posted to Silent-Tristero and|
|<superluser@xxxxxxxxxxxxxxx>         |all I got was this stupid sig! |
|alt.tv.simpsons CBG-FAQ author       |                               |
|                          (Report all obscene mail to Le Maitre Pots)|
|Yet: <http://www.needsfoodbadly.com>                 Temporary sig: --

And there was much rejoicing.


-------------------------------------------------------
This SF.Net email is sponsored by BEA Weblogic Workshop
FREE Java Enterprise J2EE developer tools!
Get your free copy of BEA WebLogic Workshop 8.1 today.
http://ads.osdn.com/?ad_id=4721&alloc_id=10040&op=click