Advise on trensfering router templates,Please

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Advise on trensfering router templates,Please

Postby browndawg » Wed Oct 10, 2018 11:19 pm

I'm trying to convert my router templates to drawings in Vcarve pro 9.
I've scanned them then imported into Vcarve then tried trace bitmap image.
There is something that I'm not getting. So far I've not been successful in many tries and countless hours. Seems there should be a better way or different methodology.
Any input would be gratefully appreciated!!

Thank you
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Re: Advise on trensfering router templates,Please

Postby Mike-S » Wed Oct 10, 2018 11:42 pm

You didn't say what the problem is you're having.
Pics?
The chicken (bluebird) usually works pretty good.
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Re: Advise on trensfering router templates,Please

Postby highpockets » Wed Oct 10, 2018 11:56 pm

Can you post a picture of a typical template you're trying to convert?
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Re: Advise on trensfering router templates,Please

Postby martin54 » Thu Oct 11, 2018 1:16 am

Lots of places where errors can creep in with your process, not saying that is the case here but a few pictures or screenshots would help a lot as others have said. The best way would probably be to draw them using the vector tools within the software which unfortunately if you are not proficient can take time :lol:
You can use your scanned bitmap as a guide which may help.
What resolution are you scanning at & what file format are you saving the scanned image as? :lol:
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Re: Advise on trensfering router templates,Please

Postby ZipperHead55 » Thu Oct 11, 2018 5:11 pm

martin54 wrote:Lots of places where errors can creep in with your process, not saying that is the case here but a few pictures or screenshots would help a lot as others have said. The best way would probably be to draw them using the vector tools within the software which unfortunately if you are not proficient can take time :lol:
You can use your scanned bitmap as a guide which may help.
What resolution are you scanning at & what file format are you saving the scanned image as? :lol:


I suspect the issue is that the OP is getting far too many nodes in their vectors from using the Trace Bitmap method.

As Martin said above, it would be beneficial to learn/use the vector creation tools in VCarve since you have FAR more control over the nodes. I have learned the hard way that there isn't an automagic way to create vectors from an image (I have tried other software, such as Illustrator (LiveTrace) and GraphicTracer, which work, for a "quick and dirty" method, but these programs also create (on average) far too many nodes, and if you are trying to do straight lines or smooth curves, you will likely always be unsatisfied with the results.

It takes time (especially the different type of curves, and types of nodes) but once you are proficient at it (learn the keyboard shortcuts!!!!) you will have complete control over your paths.

Another tip: if you are scanning the images, and there isn't a scale on the picture (unlikely, but you never know), place a ruler beside the template (when you scan it) so you can ensure the scale of your design is correct.

Tip#2: Make it easier to use your scanned image to manually trace your paths by right-clicking on the bitmap image and selecting Object Properties and move the slider bar to adjust the amount of fading there is on the background object (i.e the picture you are tracing, particularly if it is very dark).

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Re: Advise on trensfering router templates,Please

Postby LittleGreyMan » Thu Oct 11, 2018 5:34 pm

ZipperHead55 wrote:these programs also create (on average) far too many nodes, and if you are trying to do straight lines or smooth curves, you will likely always be unsatisfied with the results.


Allan,

Using the "fit curves to vectors" feature helps getting rid of *a lot* of nodes.
Best regards

LGM

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Re: Advise on trensfering router templates,Please

Postby Adrian » Thu Oct 11, 2018 5:56 pm

The other issue (really just guessing until we get more detail) could be the scanning format. The default of a lot of scanning programs is JPG at high compression which is fine for pictures to the human eye but has way too much aliasing for automatic tracing. Better to use a lossless format or, has been suggested, trace by hand for the best possible result.
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Re: Advise on trensfering router templates,Please

Postby ZipperHead55 » Thu Oct 11, 2018 9:02 pm

Allan,

Using the "fit curves to vectors" feature helps getting rid of *a lot* of nodes.


I had seen that feature but never used it. I tend to use Inkscape, Illustrator, et al but I'm really starting to appreciate the tools in Aspire (less learning curve, and they do what the average CNC user needs). Thanks for the tip.

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Re: Advise on trensfering router templates,Please

Postby rscrawford » Sat Oct 13, 2018 5:22 pm

Almost always easier to take measurements and just draw the vectors yourself. Usually get a smoother, more accurate product than your templates gave you.
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Re: Advise on trensfering router templates,Please

Postby martin54 » Sun Oct 14, 2018 5:07 pm

ZipperHead55 wrote:
Allan,

Using the "fit curves to vectors" feature helps getting rid of *a lot* of nodes.


I had seen that feature but never used it. I tend to use Inkscape, Illustrator, et al but I'm really starting to appreciate the tools in Aspire (less learning curve, and they do what the average CNC user needs). Thanks for the tip.

Allan


Although fit curves to vectors will reduce the node count you will still end up with unwanted nodes, better to redraw as you do already :lol: :lol:

Using other software is allowed :lol: :lol: I still fall back on my signmaking software for somethings because I am much better with the tools it uses & how they work, far to old to be trying to learn new software :lol: But like you am using Aspire tools for some things & learning slowly :oops:
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