* colorizing
@ 2002-01-28 17:17 Henning Hraban Ramm
2002-01-29 20:01 ` colorizing Hans Hagen
0 siblings, 1 reply; 7+ messages in thread
From: Henning Hraban Ramm @ 2002-01-28 17:17 UTC (permalink / raw)
Ahoi!
Is it possible to "colorize" bitmap or greyscale images with ConTeXt?
e.g. I use a bitmap logo that should show exactly the same color as defined
for backgrounds. If I define the "same" color with PhotoShop it looks
slightly different. Further I'd like to place it white on color.
I know that at least PDF 1.4 enables such with "DeviceN" colorspaces,
but I found no way to do it with ConTeXt.
It should as easy as in other functions to assign foreground and background
color, maybe even transparency?
Grüßlis vom Hraban!
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: colorizing
2002-01-28 17:17 colorizing Henning Hraban Ramm
@ 2002-01-29 20:01 ` Hans Hagen
2002-02-02 18:44 ` colorizing Henning Hraban Ramm
0 siblings, 1 reply; 7+ messages in thread
From: Hans Hagen @ 2002-01-29 20:01 UTC (permalink / raw)
Cc: ntg-context
At 06:17 PM 1/28/2002 +0100, Henning Hraban Ramm wrote:
>Is it possible to "colorize" bitmap or greyscale images with ConTeXt?
no
>e.g. I use a bitmap logo that should show exactly the same color as defined
>for backgrounds. If I define the "same" color with PhotoShop it looks
ah, so it's tuned for some kind of paper
>slightly different. Further I'd like to place it white on color.
>
>I know that at least PDF 1.4 enables such with "DeviceN" colorspaces,
>but I found no way to do it with ConTeXt.
many features of pdf can be applied (for instance, here i have a
rudimentary system for outline fonts, but i still need to adapt the color
driver for independent stroke and fill colors at the user level, some day
...; btw: quite funny to be able to search for invisible text).
>It should as easy as in other functions to assign foreground and background
>color, maybe even transparency?
when i browsed the specs some time ago i got the impression that this is
doable, but so far i didn't need it (although i will probably need it
soon). Building ther sources is trivial (once i understand it) and we can
probably hook things into the resource dict of graphics, but cooking up a
proper interface will take me some time. We can look into the specs at the
coming dante meeting to see what can be done.
Hans
-------------------------------------------------------------------------
Hans Hagen | PRAGMA ADE | pragma@wxs.nl
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------
fall-back web server:
www.pragma-pod.nl
-------------------------------------------------------------------------
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: colorizing
2002-01-29 20:01 ` colorizing Hans Hagen
@ 2002-02-02 18:44 ` Henning Hraban Ramm
2002-02-03 18:22 ` colorizing Hans Hagen
0 siblings, 1 reply; 7+ messages in thread
From: Henning Hraban Ramm @ 2002-02-02 18:44 UTC (permalink / raw)
Cc: ntg-context
Am Dienstag, 29. Januar 2002 21:01 schrieb Hans Hagen:
> >e.g. I use a bitmap logo that should show exactly the same color as
> > defined for backgrounds. If I define the "same" color with PhotoShop it
> > looks
> ah, so it's tuned for some kind of paper
I switched off all color management and used absolute measures.
I "solved" the problem with a clip path. And I was surprised that Photoshop 6
isn't able to write a spot color bitmap as PDF -- I know such is possible, at
least with PDF 1.4 -- another disappointment by Adobe.
> ...; btw: quite funny to be able to search for invisible text).
That feature is for scanned documents with OCR'ed text. Some firms or boards
use PDF to archive their documents...
> >It should as easy as in other functions to assign foreground and
> > background color, maybe even transparency?
>
> when i browsed the specs some time ago i got the impression that this is
> doable, but so far i didn't need it (although i will probably need it
> soon). Building ther sources is trivial (once i understand it) and we can
> probably hook things into the resource dict of graphics, but cooking up a
> proper interface will take me some time. We can look into the specs at the
> coming dante meeting to see what can be done.
Uäh, specs... ;-(
;-)
Grüßlis vom Hraban!
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: colorizing
2002-02-02 18:44 ` colorizing Henning Hraban Ramm
@ 2002-02-03 18:22 ` Hans Hagen
2002-02-04 19:19 ` colorizing specs Henning Hraban Ramm
0 siblings, 1 reply; 7+ messages in thread
From: Hans Hagen @ 2002-02-03 18:22 UTC (permalink / raw)
Cc: ntg-context
At 07:44 PM 2/2/2002 +0100, Henning Hraban Ramm wrote:
>Am Dienstag, 29. Januar 2002 21:01 schrieb Hans Hagen:
> > >e.g. I use a bitmap logo that should show exactly the same color as
> > > defined for backgrounds. If I define the "same" color with PhotoShop it
> > > looks
> > ah, so it's tuned for some kind of paper
>
>I switched off all color management and used absolute measures.
>
>I "solved" the problem with a clip path. And I was surprised that Photoshop 6
>isn't able to write a spot color bitmap as PDF -- I know such is possible, at
>least with PDF 1.4 -- another disappointment by Adobe.
Just curious: how well is photoshop pdf today? It used to be non valid pdf
for viewers ...
Also: watch out when saving-as-pdf in illustrator (actually pdf is kind of
the native illustrator format since v 9): you get everything twice: once as
edit stream (moved some 7000 points in the margin) and as preview (as well
as a bunch of ps code in a stream). Saving ai files in minimal pdf with
proper boundingbox was discussed recently with adobe (tex-adobe meeting a
couple of weeks ago).
> > ...; btw: quite funny to be able to search for invisible text).
>That feature is for scanned documents with OCR'ed text. Some firms or boards
>use PDF to archive their documents...
also, that text stream goes into a separate page stream (a page can have
multiple streams).
> > >It should as easy as in other functions to assign foreground and
> > > background color, maybe even transparency?
> >
> > when i browsed the specs some time ago i got the impression that this is
> > doable, but so far i didn't need it (although i will probably need it
> > soon). Building ther sources is trivial (once i understand it) and we can
> > probably hook things into the resource dict of graphics, but cooking up a
> > proper interface will take me some time. We can look into the specs at the
> > coming dante meeting to see what can be done.
>
>Uäh, specs... ;-(
>;-)
right, s p e c s
Hans
-------------------------------------------------------------------------
Hans Hagen | PRAGMA ADE | pragma@wxs.nl
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------
fall-back web server:
www.pragma-pod.nl
-------------------------------------------------------------------------
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: colorizing specs
2002-02-03 18:22 ` colorizing Hans Hagen
@ 2002-02-04 19:19 ` Henning Hraban Ramm
2002-02-05 8:39 ` Hans Hagen
0 siblings, 1 reply; 7+ messages in thread
From: Henning Hraban Ramm @ 2002-02-04 19:19 UTC (permalink / raw)
Am Sonntag, 3. Februar 2002 19:22 schrieb Hans Hagen:
> Just curious: how well is photoshop pdf today? It used to be non valid pdf
> for viewers ...
When?
I use Photoshop PDF since my first ConTeXt project (you remember: that
book...) without problems. (I had Photoshop 4.01 that time, as far as i can
remember.)
> Also: watch out when saving-as-pdf in illustrator (actually pdf is kind of
> the native illustrator format since v 9): you get everything twice: once as
Actually they build PDF 1.0 after the AI file format...
> as a bunch of ps code in a stream). Saving ai files in minimal pdf with
> proper boundingbox was discussed recently with adobe (tex-adobe meeting a
> couple of weeks ago).
Yes, in the "PostScript & PDF Bibel" they recommend the old PS->Distiller way
for Illustrator. (With certain exceptions.)
> > > cooking up a proper interface will take me some time. We can look into
> > > the specs at the coming dante meeting to see what can be done.
> >Uäh, specs... ;-(
> >;-)
> right, s p e c s
BTW: I look normally with specs. 8-)
I don't know into whose specs you want to look? (Look into my specs, babe...?)
Grütze für alle! (Greasings to all!)
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: colorizing specs
2002-02-04 19:19 ` colorizing specs Henning Hraban Ramm
@ 2002-02-05 8:39 ` Hans Hagen
2002-02-05 17:25 ` Henning Hraban Ramm
0 siblings, 1 reply; 7+ messages in thread
From: Hans Hagen @ 2002-02-05 8:39 UTC (permalink / raw)
Cc: ntg-context
At 08:19 PM 2/4/2002 +0100, Henning Hraban Ramm wrote:
>Am Sonntag, 3. Februar 2002 19:22 schrieb Hans Hagen:
> > Just curious: how well is photoshop pdf today? It used to be non valid pdf
> > for viewers ...
>
>When?
4.0
>I use Photoshop PDF since my first ConTeXt project (you remember: that
>book...) without problems. (I had Photoshop 4.01 that time, as far as i can
>remember.)
ah, so .01 is better, probably too late to update [i just use png these days]
> > Also: watch out when saving-as-pdf in illustrator (actually pdf is kind of
> > the native illustrator format since v 9): you get everything twice: once as
>
>Actually they build PDF 1.0 after the AI file format...
right (although i wonder if ai had objects), and now its reversing
> > > > cooking up a proper interface will take me some time. We can look into
> > > > the specs at the coming dante meeting to see what can be done.
> > >Uäh, specs... ;-(
> > >;-)
> > right, s p e c s
>
>BTW: I look normally with specs. 8-)
>I don't know into whose specs you want to look? (Look into my specs, babe...?)
right, you got it: you're are going to write the "extensive bitmap
manipulations specs", so that at the dante meeting we have something to
talk about
Hans
-------------------------------------------------------------------------
Hans Hagen | PRAGMA ADE | pragma@wxs.nl
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------
fall-back web server:
www.pragma-pod.nl
-------------------------------------------------------------------------
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: colorizing specs
2002-02-05 8:39 ` Hans Hagen
@ 2002-02-05 17:25 ` Henning Hraban Ramm
0 siblings, 0 replies; 7+ messages in thread
From: Henning Hraban Ramm @ 2002-02-05 17:25 UTC (permalink / raw)
Am Dienstag, 5. Februar 2002 09:39 schrieb Hans Hagen:
> >Actually they built PDF 1.0 after the AI file format...
> right (although i wonder if ai had objects), and now its reversing
More precise: They built the *page descriptions* of PDF after the AI format,
that is, only the commands for vector elements, text and small raster images.
In PDF these are embedded in objects, in AI they're not.
> right, you got it: you're are going to write the "extensive bitmap
> manipulations specs", so that at the dante meeting we have something to
> talk about
I must write my tutorial first, and a handout until next weekend (you got the
mail, didn't you). And by the way I should prepare our wedding ceremony and
another volume of a magazine. And there's a bit of work I must do to get paid
for...
And I think we've enough other stuff to talk about at DANTE. ;-)
Grütze für alle!
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2002-02-05 17:25 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2002-01-28 17:17 colorizing Henning Hraban Ramm
2002-01-29 20:01 ` colorizing Hans Hagen
2002-02-02 18:44 ` colorizing Henning Hraban Ramm
2002-02-03 18:22 ` colorizing Hans Hagen
2002-02-04 19:19 ` colorizing specs Henning Hraban Ramm
2002-02-05 8:39 ` Hans Hagen
2002-02-05 17:25 ` Henning Hraban Ramm
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).