A quick batch of cool links while I'm in London with David Revoy and Inge Wallin, "studying the VFX industry" -- learning a lot, actualy, about why Krita is awesome as part of a VFX workflow, and what can be better... And there is already work being done on features that are important for texture artists and matte painters"

Sponsored by the Krita Foundation, Dmitry Kazakov has improved the Color to Alpha filter beyond all recognition. His work was mentioned before on this website, but check out his blog to see what can be done to sweeten Tears of Steel.

Lukáš Tvrdý, a previous recipient of sponsored development, started working on improving support for texturing, implementing a layer offset tool. Read all about it on his blog and watch the cool demo video.

Two weeks ago, the Krita team assembled in the Linux Hotel in Essen-Horst. Sven Langkamp gives a report on his blog. Work on what has been discussed is already going on -- though obviously, we could use more helping hands. So if you want to be part of a fun, open, welcoming project, check out the Join Krita page Valerie created!

And while I don't think that we're really competing with Gimp -- Krita and Gimp have quite different target audiences, an article like this one by Carla Schroeder is always nice to read.

And did you know that Krita has already been used on real feature movies? I saw some actual footage yesterday. Awesome! It's always inspiring to see work done with Krita -- like David's warm-up images, or Ramon Miranda's landscapes.

Krita has been developing quite fast, so you may be surprised to know that Krita's core team is actually quite small, not to mention severely overworked. We need your help! Whether you are a developer or non-developer, there are many things that need to be done to improve the Krita experience! In particular, Krita urgently needs:

  • A maintainer for Krita's merchandise shop: Krita has a mostly unused merchandise shop on zazzle.com . A volunteer is needed to properly set up and maintain it. Create cool new merchandise, keep a choice selection of t-shirt designs available -- All proceeds will be used to fund the Krita Foundation.
  • Developers: You'll be able to work on one of the coolest and fastest-growing open source painting programs out there. Krita also benefits from a modular architecture and the use of the Calligra and Qt libraries, which makes it easier to focus on new features instead of reinventing the wheel. And it makes coding fun!
  • Maintainers for Windows and OSX versions: Do you have experience porting and maintaining programs from Linux to Windows or OSX? As we all know, the current Windows version of Krita needs a lot of work. Please help us bring Krita to a wider audience!
  • Writers: The website, user documentation wiki and developer wiki are all in need of new content!
  • Marketing: Krita needs to regularly announce new releases or fundraising efforts on a variety of websites/blogs/social networks. This requires a lot of coordination work and perhaps a smart strategist.
  • Many more: Krita's community is very friendly and supportive. We welcome all types of contributors!

If you've always hoped to contribute back to the project, please don't hesitate to join us at our new Join page, or help us spread the word! You can also support Krita's development through donations. The Krita team thanks you for all the support you have shown us until now!

 

just updated Krita's Color to Alpha filter on the development 2.7pre-alpha version ( already on Git master ) , so it can now be easily used for removing background from scanned sketches.

To find the feature, in the menu : Filter > Color > Color to alpha.

Algorithm differs from the one used in Gimp ( also named 'Color to Alpha' ) : Krita use CIE deltaE [0] function to calculate the difference between the image and the base color, so it is more flexible and configurable. You can choose to what extent you want to remove the background by changing threshold value.

Dmitry explain the filter's algorithm on his blog :

  1. Firstly, Krita calculate the difference between the image pixel and the base color and decrease the pixel's opacity according this difference. The less the difference, the more opacity is decreased. As already mentioned ; Krita use deltaE function to calculate this difference.
  2. Secondly, Krita apply an inverse "composite over" to every pixel. Due to that step, if we put a layer filled with a base color below the filtered image, we will get original image!

What is the advantage compare to put your pencil artwork on a 'mulitply' layer blending mode ?
You can easily 'lock' the alpha of the layer, then color only your lines now. It's a step I usually did in Gimp ( see on my pencil to digital painting tutorial ) and I'm happy to see the feature now in Krita too.

Reference :
Wikipedia Color Difference
Dmitry original blog post

image & text copied from Dmitry blog
pencil artwork CC-By Deevad

Akademy 2013 will be held in Bilbao from 13 to 19 July. More than just a developer hackfest, Akademy is the annual summit for all of KDE, one of the largest free software communities in the world. Developers, users, documentation writers, artists, tests, bug hunters and usability experts will get together -- and this year, they will be joined by the Qt developer community as well, since the 2013 Qt Contributors Summit will be co-located with Akademy!

A perfect opportunity to showcase the power of some KDE applications -- notably Krita, of course! There will be the possibility to print out six or so artworks made with Krita on a really large canvas and showcase them in the main entry hall.

And now we only need artwork! There are some basic rules:

  • the art needs to be (mainly) done with Krita
  • any creative commons license is preferred
  • gratuitous violence or overly sexist pictures can't be used

If you want to show off your Krita skills to a wide audience, submit your artwork to the Krita gallery forum! Don't forget to tell us that it can be used for the Akademy showcase, too!

Last week, February 12 and 13, Dan Jensen and me, Boudewijn, were at the Mobile World Congress in Barcelona at the invitation of Intel, to give a demonstration of Krita on the desktop and Krita Sketch on a Windows 8 tablet.

We were guests in the Intel Application booth, which was pretty much perfectly situated, near the entrance of the biggest hall, and our demo station was right at the entrance of the booth:

We had two time slots, one on Tuesday morning, when everyone was fresh and interested, and one on Wednesday afternoon, when the press came out of their lairs and showed up, filled to the brim with curiosity.

Dan and I had had t-shirts made with the 2.6 mascot created by Tyson Tan on it:

Pretty soon we'll make shirts with that design available for sale! The shirts were really cute and totally attention grabbing, as was the video David Revoy has created about the upcoming transform tool improvements which we showed looping on the big screen.

We showed Krita Sketch and Krita Desktop on Windows 8, on a Lenovo laptop and a Windows 8 tablet, but in between there was a little Nexus 7 running Plasma Active and Krita Sketch -- among all the attention FirefoxOS and Ubuntu Touch was getting, it was a good feeling to know that KDE and Plasma Active were among those present.

This really was the first time that Krita has been presented at a large trade show, outside the free software world, and we were naturally quite anxious, but reactions were overwelmingly positive! People were wondering how an application this impressive could actually be free.

 

Since it was first announced, we have received 19 entries, many of which were of quite good quality and show an interesting approach to the topic. That of course meant that picking a winner was quite a challenge.

Image : Konqui, Katie and Friends by tysontan

 

After reviewing all the entries the jury - consisting of Nuno Pinheiro, David Revoy and Timothee Giet - selected Konqui, Katie and Friends by tysontan as the winner. tysontan’s work was not only well thought out, it was also an extremely cute and charming representation of Konqi. In addition, the way it was presented allows it to be used in many different settings, from avatars to groups, wallpapers, promotional material, and so on.

Thanks to tysontan and all the contest participants for their valuable input and great work!

Watch all entries here

This contest alone is just a glimpse of what can be done by artists with Krita, as the works in the forum gallery show eloquently. So, if you are artistically inclined, why not give Krita a go and show the community what it is capable of?

( this post is a shameless copy/paste of Neverendingo announcement , all credit and thanks for the organisation of the contest to him )

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