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Guides/Inkscape for Laser Cutting: Difference between revisions
From London Hackspace Wiki
→Scanning a bitmap: Added autotrace, centerline trace instructions.
(→Scanning a bitmap: Added autotrace, centerline trace instructions.) |
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Path -> Trace Bitmap (Shift-Alt-B) | Path -> Trace Bitmap (Shift-Alt-B) | ||
This brings up a dialog box. You can try to scan it with the default settings. This will work if it is a high contrast image. For lower contrast images fiddle with the threshold, updating to see how it changes. You might want to scan multiple colours. If so use the multiple scana. Turn off smoothing and stack scans unless you want to be stacking engraving on top of engraving. | This brings up a dialog box. You can try to scan it with the default settings. This will work if it is a high contrast image. For lower contrast images fiddle with the threshold, updating to see how it changes. You might want to scan multiple colours. If so use the multiple scana. Turn off smoothing and stack scans unless you want to be stacking engraving on top of engraving. | ||
====Alternative Trace==== | |||
Using the above method provides an outline of the bitmap. For tracing letters or line art, AutoTrace provides a centerline trace option. | |||
Available as an open source [http://autotrace.sourceforge.net/ command line Java] tool, or [http://www.roitsystems.com/cgi-bin/autotrace/tracer.pl online]. | |||
For a black and white bitmap, something like: | |||
autotrace -centerline -color-count 2 -input-format bmp -output-file file.svg -output-format svg file.bmp | |||
Read [www.gimphelp.org/autotrace_manual.shtml the manual] for full details. | |||
===Layers and Ordering=== | ===Layers and Ordering=== | ||
