/ic/ - Artwork/Critique

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Scanning Art Anonymous Tue Dec 26 23:34:15 2017 No.3250615 [Reply] [Original]

Hey d/ick/heads,
so when I scan a sketch of mine and upload it to my laptop, how do I go about making the negative space transparent? I use Paint Tool SAI primarily, but also have PS.
What I mean is, how do I make a scan edit-able?
I have sketches I'd like to make lineart with. How do?

>>	Anonymous Tue Dec 26 23:46:07 2017 No.3250637 >>3250615 Adobe illustrator is your friend. Use that instead.

>>	Anonymous Tue Dec 26 23:58:41 2017 No.3250647 >>3250637 can you elaborate? A step-by-step would be nice, if you have the time :S

>>	Anonymous Wed Dec 27 00:04:42 2017 No.3250652 in clip studio there is such a thing, in the edit menu there is a place called convert brightness to opacity.

Anonymous Wed Dec 27 00:22:54 2017 No.3250669

>>3250647
https://youtu.be/argiGgAD0Ck
You can use this feature and just convert it to a Psd. Then you can edit it in Sai and Photoshop. It's the easiest way to do it I think. This is another way if you don't like the way it came out.
https://youtu.be/kvT4VnUZ7VM

Anonymous Wed Dec 27 01:46:11 2017 No.3250739

>>3250637
Illustrator won't do what he's requesting. He wants his lines converted to editable vectors, and what Illustrator will do is make shapes, not lines. In other words, instead of a line with control points that match the line in the drawing, it will create a box.

There is no way to convert a line in a bitmap to an editable line in Illustrator, or any other vector based app. You'll have to draw the lines manually.

Anonymous Wed Dec 27 01:52:35 2017 No.3250745

>>3250615

Import scan.
Go to Image/Mode/Greyscale, then go to Image/bitmap/50% Threshhold under Method. This will convert anything above 50% grey to black, and anything below 50% grey to white.
Go to Image/Greyscale. Click on any white pixel or area with a magic wand, then go to Select/Select similar, and with the layer set as a layer, not "background", hit backspace/delete. You now have a transparent background.

As for converting to line art, like in Illustrator, you can't, you'll have to draw it by hand.

>>	Anonymous Wed Dec 27 01:57:49 2017 No.3250751 >>3250615 what the fuck /ic/ told me not to draw each individual hair now i see this

>>	Anonymous Wed Dec 27 02:04:32 2017 No.3250755 >>3250751 They only tell that to beginners because they have poor line control. Once you have good kind control you can do all types of things like hatching which is frowned upon too for looking like chicken scratch.

>>	Anonymous Wed Dec 27 02:05:13 2017 No.3250756 File: 35 KB, 367x500, EAA82DB0-7D9A-4AA3-BDCA-2118F443779E.jpg [View same] [iqdb] [saucenao] [google] Just set the layer with the line art to “multiply” then add a layer underneath that and draw/color in it

>>	Anonymous Wed Dec 27 02:48:47 2017 No.3250797 >>3250669 super helpful links, thanks! >>3250755 this >>3250739 >is actually femanon

>>	Anonymous Wed Dec 27 03:34:51 2017 No.3250822 >>3250797 Aw, is someone butthurt because they were proven to be wrong? Boo hoo.

>>	Anonymous Wed Dec 27 04:34:36 2017 No.3250868 >>3250822 wrong poster, anon.

Anonymous Wed Dec 27 10:27:18 2017 No.3251033
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>>3250615
does anyone have any advice for otherwise making a scan line drawing good?

example, when i scan something in, it has the ink and the paper both a little bit greyish. how do i make the ink black and the paper white?

>>	Anonymous Wed Dec 27 10:29:44 2017 No.3251036 >>3251033 Scan the drawing in Black and White, don't scan it in grayscale. After scanning it, clean it up in whatever program you use.

Anonymous Wed Dec 27 10:45:11 2017 No.3251049

>>3251033
I haven't had a working scanner in years, so good luck with these instructions.

Adjust your alphas in greyscale using the histogram thing until everything you want to be black is black and everything that isn't disappears. Raise the floor to adjust what is black and lower the ceiling to get rid of grey. Middle setting is aliasing, push it into whatever gets rid of grey but doesn't alias your lines. Then convert white to transparency.

Or look up how to prepare a scan.

Anonymous Wed Dec 27 21:03:27 2017 No.3251611
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>>3250615
>>3251033
In SAI the only way to make the "paper" under the lines invisible is to set Luminance to Transparancy, then you don't have to set it to multiply and you can put your color layers under it. You can sort of get rid of the greyness in the background by playing around with the contrast/brightness.

>>	Anonymous Wed Dec 27 21:09:01 2017 No.3251617 >>3251033 brightness and contrast curves.

>>	Anonymous Wed Dec 27 21:37:48 2017 No.3251635 >>3250739 https://youtu.be/2TpdQL2XAvY You very much can in Adobe illustrator.

>>	Anonymous Thu Dec 28 14:06:09 2017 No.3252561 >>3251036 >>3251049 >>3251611 >>3251617 thanks pals. i will try these out.

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