Edge Detection

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kimp
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Joined: Tue Mar 25, 2008 4:46 am

Edge Detection

Post by kimp »

If you were to import a digital image already coloured and then trace bitmap but with the edge detection on, would it then just cut out the edge of the image?
HeatherM
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Re: Edge Detection

Post by HeatherM »

Not necessarily, it depends on the image. Are you just wanting a silhouette? I think there are probably better ways, but once again it depends on the image.
kimp
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Joined: Tue Mar 25, 2008 4:46 am

Re: Edge Detection

Post by kimp »

What I want to do is import a coloured digital image and have it cut around the edge only of it, but it picks up all the fine detailed edges of the different colours and shapes, is there a way around it so that I can get it to just cut out the edge? :?: Thanks.
HeatherM
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Re: Edge Detection

Post by HeatherM »

It depends on the image. One good way to do this if you have a solid background is to use a photo editing program with a magic wand tool on the background and then select inverse. See Dan99's tut for help with that. http://dan99.blogspot.com/2009/01/video ... o-svg.html

If it is a reasonably simple shape, you might want to use the bezier tool in Ink. See Susan Bluerobots tut here. http://susanbluerobot.blogspot.com/2008 ... found.html

You could also try increasing the threshold in the Trace bitmap dialog box.
firstcut
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Re: Edge Detection

Post by firstcut »

In the trace bitmap panel try color under multiple scans and then set the colors to the number you want. dan99 has a tutorial on this
Or this might be a candidate for the paint bucket technique
see http://cleversomeday.wordpress.com/2009 ... -inkscape/
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