Pull white image from black background

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EngineerGuY
Posts: 6
Joined: Wed Jan 18, 2012 1:27 pm

Pull white image from black background

Postby EngineerGuY » Sat Sep 09, 2017 1:12 am

How can I go about saving JUST the white image from a background which is black. Or any other color for that matter? Attached is just an example certainly not what I want, but more the technique for how to extra the logo, picture, whatever it may be from the black background.
Attachments
adidas.png
adidas.png (69.46 KiB) Viewed 393 times

Moini
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Joined: Mon Oct 05, 2015 10:44 am

Re: Pull white image from black background

Postby Moini » Sat Sep 09, 2017 1:16 am

Either use a raster graphics editor, like Gimp (https://gimp.org), because this image is a raster graphic, and those programs are made for working with this kind of picture.

Or vectorize the image and delete the parts that you do not need afterwards. Learn about vectorization in Help -> Tutorials -> Tracing.
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tylerdurden
Posts: 1830
Joined: Sun Apr 14, 2013 12:04 pm
Location: Michigan, USA

Re: Pull white image from black background

Postby tylerdurden » Sat Sep 09, 2017 1:18 am

I'd look for vector versions of the artwork and delete the background shapes.

If you can only find a bitmap version of the artwork, tracing can be used.

http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Trace.html
Have a nice day.

I'm using Inkscape 0.92.2 (5c3e80d, 2017-08-06), 64 bit win8.1

The Inkscape manual has lots of helpful info! http://tavmjong.free.fr/INKSCAPE/MANUAL/html/

Lazur
Posts: 4424
Joined: Tue Jun 14, 2016 10:38 am

Re: Pull white image from black background

Postby Lazur » Sat Sep 09, 2017 1:27 am

Can also use filters as in the example:
bgrem.svg
(82.61 KiB) Downloaded 15 times

-however I don't think that's what you are looking for.

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brynn
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Location: western USA
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Re: Pull white image from black background

Postby brynn » Sun Sep 10, 2017 3:34 pm

That particular image would be well suited for auto tracing, such as with Trace Bitmap, as Moini and TD both suggested. But Trace Bitmap will not produce a good result for all images. In some cases, you might need to "manually" trace with the Pen/Bezier tool.

If you want a raster image for the final result, use a raster editor. Inkscape is a vector editor.

tylerdurden
Posts: 1830
Joined: Sun Apr 14, 2013 12:04 pm
Location: Michigan, USA

Re: Pull white image from black background

Postby tylerdurden » Sun Sep 10, 2017 9:42 pm

Artwork like logos will almost always benefit by conversion to vector, even if final output is raster, particularly if the artwork will be scaled.
Have a nice day.

I'm using Inkscape 0.92.2 (5c3e80d, 2017-08-06), 64 bit win8.1

The Inkscape manual has lots of helpful info! http://tavmjong.free.fr/INKSCAPE/MANUAL/html/


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