Deviantart Wont Let Me Upload Art Made on Krita
Clean bluish sketch traditional line-art to color information technology digital with in Krita
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Intro
This is a tutorial about the "traditional to digital" topic. Y'all'll meet all the step I utilize for drawing, scanning and cleaning my traditional line-art when I use this technique on my webcomic Pepper&Carrot. In the start office of the tutorial, I'll show you my workflow for sketching, and 'inking' with pencil. In the second office, we will scan the lines, and clean them in Krita to continue only the pencil artwork. In the last part, I'll show how to tint the lines, and make them transparent to exist ready to receive a total color work afterwards.
1. Warming up
I start with a sheet of A4 random tiny sketches. I usually draw facial expression, then poses and quondam thumbnails. Information technology's non meant to look similar the expert sketch y'all'll put into a book. It is doodling, something you'll keep for yourself; your visual notes. I do that to be in sync with my volumes, and also break the stress to draw badly afterward on the last sheet. On this session (illustration nether), a piddling thumbnail had my attending. I outlined information technology in orange on the visual. Information technology's certainly a archetype composition, or something a scrap cliché for a run and jump pose ; but I wanted to meet this one with more details.
2. Guidelines
I have my reference on the side of my desk [ane] and with a new sheet of newspaper I get-go drawing guidelines [2] . I go along them very lite and subtle, with minimal pressure level on my blue pen. I use Pentel Blue lead in 0.5mm. I tested as well many other brands, and the Pentel are the one who conform more my taste and cartoon fashion. You tin see I trace large arc ; and keep the whole things undetailed. I'm looking for composition, and free energy. My gesture are large, and I handle the pen also differently than usual to not draw with the wrist or finger, but involve the whole arm in the gesture.
3. Bluish sketch
I proceed drawing with my bluish pencil, and add together details. I'm doing my best to build the main volumes. I usually go along the shapes simple. I demand to let room for still getting a scrap of liberty on the next step. The goal is non to make a perfect blue sketch, so to but overwrite each one of lines. That would be just tedious.
4. Erasing
With my kneaded eraser, I soft erase my blue sketch. Pentel blueish lines are actually difficult to erase, so you don't risk to loose a function of the drawing definitely anyway. The purpose of this stride is simple : make the sketch line easier to remove with Krita later, because they will exist less night ; and also bring comfort to my inking procedure. With a bright sketch, information technology's easier to see the rendering of your night pencil lines.
5. Inking... well, without ink
I 'ink' my drawing with Stabilo atomic number 82 pencil 0.5mm B , it's soft on my Bristol paper ; and allow me dark and calorie-free grey variations. it's besides very precise.
Note : my Cintiq 21UX don't permit me to draw with this same precision. That's why I'm not using it. Pixels are too big, stylus likewise far from the surface, and stylus nib impact this drinking glass at 5mm over the existent surface. So impracticable for my mode of inking.
'Inking' is over !
vi. Browse
I scan on my Xubuntu 14.04 Linux desktop with Xsane, from the default package. You can notice on my screenshot my super compact dark windows border theme for Xfce. My file manager is Nemo. I can setup Xsane to just grab all the surface of the scanner, and save them as PNG 300dpi in colour automatically on my disk.
7. Krita
I open my file in Krita (version 2.8.five from the Kubuntu update ppa). The only modifications I made on my Krita install is the usage of a dark theme and for the presets my latest brushkit. The raw scanned file is bachelor at the terminate of this tutorial.
8. Cropping
I rotate my Image with Prototype > Rotate > Rotate prototype 90° to the right . Then, I select the ingather tool , and in the tool options ; I actuate the 'Thirds' Ornamentation. This lines helps me to setup a better cropping. I added over the screenshot hither under light-green line to show yous the composition lines I'm looking for.
nine. Filter : Color Aligning curves
Open up Filter > Adjust > Color Adjustement curves, [i] and flatten the channel RED and GREEN [ii] , [3] . Don't bear on the Blue one [iv]. You should become a full Bluish picture. By doing this, you'll merge the blue datas of your sketch into this ocean of blue ; and then, sort of removing them.
Protip : Accelerate your workflow, salve a preset for your filters the next time you need to utilise them. It works for all the filter in Krita. Printing 'Edit Presets' on the top-right corner [1]. And then 'Bookmark electric current' [2]. Your preset will be added to the listing [3] . Yous tin also rename the detail with a correct-click (eg. here : "RGB->Blueish just" is my name for this preset ).
x. Desaturate Max
Now, to remove all the blue in our artwork, phone call the Filter > Adjust > Desaturate , and apply the 'Max' choice in the listing.
11. Tweak values with Levels
Open the levels, Filter > Arrange > Levels and move the piddling black triangle cursor where the histogram graph start to show datas [ane] ; and clean all the white-grey noise [ii]. When y'all scan paper, you usually get a little mountain in the histogram on the white part (right) to clean.
I also ingather the black [three] considering I want to avoid blackness pixels on my lines.
12. Manual cleaning
You have at present fourth dimension to just take a castor selection black or white color, and fix your artwork the digital way. I don't employ black, but a xc% blackness one, and so I apply my color history in the avant-garde color selector [1] to retrieve the color each fourth dimension. I manually clean the dust, redo the line I didn't similar, or deform and transform the whole drawing. I 'm cartoon often with a little rake [3] and make clean with a bigger preset, like my roller-brush [2]. For this artwork, I did only a classic dust-removal work, painting with white over all the footling dark grayish stain . 
13. Line-art coloring
Open up the Filter > Conform > HSV Adjustement, and outset to click 'Colorize' [1] , then you lot tin adjust the hue and the saturation [2]. I don't recommend to tweak the Lightness [3]. My taste here is for a night Burnt Sienna . Save a Presets [read : chapter 9] if you need to find the exact aforementioned color setting adjacent time.
fourteen. Remove the white
In gild to proceed but our lines, nosotros need to remove the white background. But our image is flat. A skilful filter to handle this is the Filter > Colors > Color to Alpha.
The default setting of this filter is to remove pure white, and the default threshold is perfect for this task.
15. Manage layers
We deleted the white background in our drawing and now we will create it again. But this time it will be on a divide layer under. For doing this, create a new layer, and put information technology just under our line-art. Fill it with White ( select white color, then get to Edit > Fill up with foreground color ). Then rename the layers for making the project cleaner.
16. Save it
But a niggling reminder : Save your artwork as *.kra .
17. Final line-art :
This is a low resolution of the cleaned line-fine art. If you desire to go a look at the full resolution, download it (link at the finish of the tutorial).
Summary :
This method to remove blue-lines might expect complicated and long because this tutorial is detailed with many notes and photos. But in one case you master it, information technology's a 3 min job. And you lot tin repeat it easily across a pack of 10 page of web-comics in less than 30min. The main infos to recollect:
- Colour adjustement curves and make Blue by flatting Red and Dark-green channels ( 2 click with a preset )
- Desaturate Max (2 click with or without a preset)
Other function are but too like shooting fish in a barrel in a workflow and make sens by themself (crop, dissimilarity, remove alpha). From all the method I read (oft about Gimp or Photoshop ) this is the fastest one for me, with the best results and centered around a single software, Krita. That'due south why I use it in production.
Decision :
Now our file is ready to receive a paint layer between our Bakground layer and our Lines.
Also, I have a method to color my artworks, just this will be for a next tutorial ! (coming afterwards Pepper&Carrot ep3)
Source files :
- Raw scanner (PNG, 300dpi, Xsane)
- End .kra files ready to color (Krita 2.8.5, .kra)
Download here : http://sta.sh/019n962job53e (11MB)
Links :
I recommend also you to read the exellent article : Removing blue lines from a drawing: The ascension of the color channels. with Gimp and Krita by Wolthera van Hövell tot Westerflier.
Source: https://www.davidrevoy.com/article239/clean-blue-sketch-traditional-line-art-to-color-it-digital-with-in-krita
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