'R: GMIC in Krita'

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List:       kde-kimageshop
Subject:    R: GMIC in Krita
From:       silvio grosso <grossosilvio () yahoo ! it>
Date:       2013-04-14 7:37:14
Message-ID: 1365925034.54170.YahooMailClassic () web171501 ! mail ! ir2 ! yahoo ! com
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Hi everyone,

About the G'MIC [0] integration into Krita, I have proposed to Lukas to follow these \
rules:

1) 
Code a back-end which might be "easily" extended by other Krita developers in the \
future as well (particularly regarding the *QT 5* "upcoming" port already started by \
Boud). This is the most important point for me.

2) 
Try to port to Krita at least the most "important" filters for artists (even though, \
in the long run,  the best would be to have all of them available out of the box). \
The natural goal is to get these G'MIC filters implemented which their own GUI on \
Krita.

To start with, I have proposed to Lukas to take into account at least these 3 \
                filters:
- Recolorize [1]
- Poster edges[2]
- Repair [3]

Naturally, *ALL*
 suggestions by artists regarding the most G'MIC useful filters to port to Krita are \
more than welcome :-) In all truth, personally I only master some of them (actually, \
only a few of them well...)

3) At present, there is *NO* time-frame set in stone to deliver this back-end (since \
this task it not easy to accomplish). Needless to say, the sooner this happens, the \
better :-)

4) Regarding the option to update these filters through Internet (that is, the same \
feature you get with Gimp both on Linux and Windows), Lukas is going to investigate \
this option for Krita as well. Nevertheless, I have suggested to Lukas not to spend \
too much time on this option at first.

IMHO, to begin with, the most important rule is to have the most important G'MIC \
filters fully implemented, with their own *GUI*,  into Krita (in order to use them \
easily while painting on Krita).

I suppose that, in the short term, it is unlikely for
 Lukas to have the time to port all G'MIC filters to Krita (since thare are more than \
750 commands available with G'MIC....). As a consequence, for some of these filters, \
at first, the users will be forced to continue to use them on Gimp (through the G'MIC \
plugin).

A possible plan for Lukas might be to (please, bear in mind here I am *not* a \
                developer...):
- port the most "important" G'MIC filters to Krita 2.7 master with their own GUI \
                (with the current QT 4.8 toolkit);
- port the other minor remaining G'MIC filters to the QT 5 back-end when everything \
is fully working on this future version of Krita (naturally, we are aiming to the \
*long* distant future here...).

Best regards,

Silvio Grosso

[0] http://www.youtube.com/watch?v=LR1gWQBjTyU
[1] http://gimpchat.com/viewtopic.php?f=28&t=6207&start=20
[2] http://www.davidrevoy.com/article147/gmic-new-filter-poster-edges
[3]
 http://www.flickr.com/groups/gmic/discuss/72157633096418042/

--- Sab 13/4/13, Lukast dev <lukast.dev@gmail.com> ha scritto:

Da: Lukast dev <lukast.dev@gmail.com>
Oggetto: GMIC in Krita
A: "Krayon (KImageShop)" <kimageshop@kde.org>
Data: Sabato 13 Aprile 2013, 20:52

Hi fellas,

I'm working on integrating GMIC, thanks to Silvio Grosso, into Krita
and today I have first results applied on Ramon paintings :)

Default flower and sharpen effect
http://i.imgur.com/kYNcsNa.png

Poster edges inside Krita (deevad's blog [1])
http://i.imgur.com/XfdPxQl.png

The examples above were created with degradation of
 colorspaces
through QImage (8-bit rgba)

There is a lot of work ahead so far! I will try to commit something
this week so that you can play with it a bit,
but so far it is pile of nasty hacks.

Technical bits:
It seems that native colorspace for GMIC is FLOAT32 RGB(A) colorspace.

So my approach will be:
a) convert layer actual color-space to FLOAT32 RGB(A), relayout pixel
format (Krita uses bgrbgrbgrbgr, GMIC rrrrbbbbgggg)
b) apply GMIC,
c) relayout back to Krita bgr format, convert back to actual colorspace

More to come!

[1] http://www.davidrevoy.com/article147/gmic-new-filter-poster-edges

Regards,
Lukas Tvrdy | http://lukast.mediablog.sk/log
_______________________________________________
Krita mailing list
kimageshop@kde.org
https://mail.kde.org/mailman/listinfo/kimageshop

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id="yiv1012608187drftMsgContent" \
style="font:inherit;font-family:arial;font-size:10pt;">Hi everyone, About the \
G'MIC [0] integration into Krita, I have proposed to Lukas to follow these \
rules: 1) Code a back-end which might be "easily" extended by other Krita \
developers in the future as well (particularly regarding the *QT 5* "upcoming" port \
already started by Boud). This is the most important point for me. 2) \
 Try to port to Krita at least the most "important" filters for artists (even \
though, in the long run,&nbsp; the best would be to have all of them available out of \
the box). The natural goal is to get these G'MIC filters implemented which their \
own GUI on Krita. To start with, I have proposed to Lukas to take into \
account at least these 3 filters: - Recolorize [1] - Poster edges[2] - \
Repair [3] Naturally, *ALL* suggestions by artists regarding the most G'MIC \
useful filters to port to Krita are more than welcome :-) In all truth, personally \
I only master some of them (actually, only a few of them well...) 3) At \
present, there is *NO* time-frame set in stone to deliver this back-end (since this \
task it not easy to accomplish). Needless to say, the sooner this happens, the \
better :-) 4) Regarding the option to update these filters through Internet \
(that is, the same feature you get with Gimp both on Linux and Windows), Lukas is \
going to investigate this option for Krita as well. Nevertheless, I have suggested \
to Lukas not to spend too much time on this option at first. IMHO, to begin \
with, the most important rule is to have the most important G'MIC filters fully \
implemented, with their own *GUI*,&nbsp; into Krita (in order to use them easily \
while painting on Krita). I suppose that, in the short term, it is unlikely \
for Lukas to have the time to port all G'MIC filters to Krita (since thare are more \
than 750 commands available with G'MIC....). As a consequence, for some of these \
filters, at first, the users will be forced to continue to use them on Gimp (through \
the G'MIC plugin). A possible plan for Lukas might be to (please, bear in mind \
here I am *not* a developer...): - port the most "important" G'MIC filters to \
Krita 2.7 master with their own GUI (with the current QT 4.8 toolkit); - port the \
other minor remaining G'MIC filters to the QT 5 back-end when everything is fully \
working on this future version of Krita (naturally, we are aiming to the *long* \
distant future here...). Best regards, Silvio Grosso [0] \
http://www.youtube.com/watch?v=LR1gWQBjTyU [1] \
http://gimpchat.com/viewtopic.php?f=28&amp;t=6207&amp;start=20 [2] \
http://www.davidrevoy.com/article147/gmic-new-filter-poster-edges [3] \
http://www.flickr.com/groups/gmic/discuss/72157633096418042/ --- Sab \
13/4/13, Lukast dev &lt;lukast.dev@gmail.com&gt; ha \
scritto: <blockquote style="border-left:2px solid rgb(16, 16, \
255);margin-left:5px;padding-left:5px;"> Da: Lukast dev \
&lt;lukast.dev@gmail.com&gt; Oggetto: GMIC in Krita A: "Krayon (KImageShop)" \
&lt;kimageshop@kde.org&gt; Data: Sabato 13 Aprile 2013, 20:52 <div \
class="yiv1012608187plainMail">Hi fellas, I'm working on integrating GMIC, \
thanks to Silvio Grosso, into Krita and today I have first results applied on \
Ramon paintings :) Default flower and sharpen effect <a rel="nofollow" \
target="_blank" href="http://i.imgur.com/kYNcsNa.png">http://i.imgur.com/kYNcsNa.png</a> Poster \
edges inside Krita (deevad's blog [1]) <a rel="nofollow" target="_blank" \
href="http://i.imgur.com/XfdPxQl.png">http://i.imgur.com/XfdPxQl.png</a> The \
examples above were created with degradation of
 colorspaces through QImage (8-bit rgba) There is a lot of work ahead so \
far! I will try to commit something this week so that you can play with it a \
bit, but so far it is pile of nasty hacks. Technical bits: It seems that \
native colorspace for GMIC is FLOAT32 RGB(A) colorspace. So my approach will \
be: a) convert layer actual color-space to FLOAT32 RGB(A), relayout \
pixel format (Krita uses bgrbgrbgrbgr, GMIC rrrrbbbbgggg) b) apply GMIC, c) \
relayout back to Krita bgr format, convert back to actual colorspace More to \
come! [1] <a rel="nofollow" target="_blank" \
href="http://www.davidrevoy.com/article147/gmic-new-filter-poster-edges">http://www.da \
vidrevoy.com/article147/gmic-new-filter-poster-edges</a> Regards, Lukas \
Tvrdy | <a rel="nofollow" target="_blank" \
href="http://lukast.mediablog.sk/log">http://lukast.mediablog.sk/log</a> _______________________________________________ Krita
 mailing list <a rel="nofollow">kimageshop@kde.org</a> <a rel="nofollow" \
target="_blank" href="https://mail.kde.org/mailman/listinfo/kimageshop">https://mail.k \
de.org/mailman/listinfo/kimageshop</a> </div></blockquote></td></tr></tbody></table></div></td></tr></table>

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