Post Reply 

Changing a silhouette to line art

Oct 7, 2014, 01:24
Post: #1
Changing a silhouette to line art
Hi,

I have some silhoette's that I want to change to line art. I use these for patterns to cut timber on a scroll saw. Some are very small, and cutting to a thin line is easier than cutting to the edge of a black silhouette. I have attached an example that i want as a line outline not a solid black object. Also vector art would be the best so I can quickly resize as I need.

Is there a way to do this please


Attached File(s) Thumbnail(s)
   
Find all posts by this user
Quote this message in a reply
Oct 7, 2014, 06:21
Post: #2
RE: Changing a silhouette to line art
Use Inkscape. It does vector graphics.

There is a feature Path>Trace Bitmap. There is a bit of a learning curve to use it efficiently.

Otherwise you can trace the image manually. Takes longer, but gives better results. Also a bit of a learning curve as you will need to learn to use Inkscape's paths.
Find all posts by this user
Quote this message in a reply
Oct 7, 2014, 06:48
Post: #3
RE: Changing a silhouette to line art
Cool I have Inkscape, never used it, but I will give it a go.

Cheers
Find all posts by this user
Quote this message in a reply
Oct 7, 2014, 07:51 (This post was last modified: Oct 7, 2014 08:43 by rich2005.)
Post: #4
RE: Changing a silhouette to line art
Inkscape will do the job, I am a big fan of Inkscape, but you also have to consider fit-for-purpose. Do you really need a vector?
edit: If you decide on inkscape, it might be an advantage to increase the canvas size a little in Gimp. to include any border that abuts the edge. Then for this IM, 'trace bitmap' is straight forward. http://i.imgur.com/eeeuYDl.jpg

That is a fairly nasty image, lots of 'jaggies' around the silhouette. Does it matter in this case, no.

You can make an outline in Gimp, suitable for a band saw. One way with some screenshots

1. Add a new layer, always best to work on a new layer rather than altering the existing.
http://i.imgur.com/HWXxtaN.jpg

2. Back to the bottom layer and make a selection with the color select tool. In this case black or white, either will do.
http://i.imgur.com/Hyic2mH.jpg

3. Turn off the bottom layer visibility, click that little eye.
Back to top layer. Use Edit -> stroke selection. Set a line width and click the stroke button. Turn the selection off Select menu -> None.
The line color comes from the foreground color so use anything except white.
http://i.imgur.com/U8Uamfz.jpg

4. You get an outline, do not worry about the checker board transparency, it does not print.
If you need to keep everything, save as a Gimp xcf file. For a single layer export as a png or jpeg. Be careful you do not overwrite your existing file.
http://i.imgur.com/JFUTnmy.jpg

** https://www.gimp-forum.net/ now answering questions**
Find all posts by this user
Quote this message in a reply
Post Reply 


Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  best tutorial for changing someone's head to another body JaDan 19 8,327 Jul 20, 2017 05:07
Last Post: ythgilb
  Can't find line tool? FluffyMuffins230 4 320 Oct 1, 2014 16:24
Last Post: FluffyMuffins230
  Lithophane/line image djh256 3 292 Sep 16, 2014 14:06
Last Post: djh256
  Changing the color of a house with a new layer. sepoto 2 552 Sep 6, 2014 08:18
Last Post: janston
  How to set gradually changing opacity of a layer? adamail 2 283 Sep 4, 2014 07:30
Last Post: adamail

Forum Jump:


GIMP ForumPortalArchiveContactTermsRSS