jpeg to vector double lines

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jpeg to vector double lines

Postby dave gangster » Fri Jan 11, 2019 10:57 pm

ScreenHunter_96 Jan. 12 08.54.jpg
Hi can any one help , want to take a photo of my guitar plans and turn them in to vectors . When i do this they come out split double lines not single line. Ihave tried on line conversion plus Inkscape and converting to pdf nothing works any ideas thanks Dave.
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Re: jpeg to vector double lines

Postby mtylerfl » Fri Jan 11, 2019 11:39 pm

Hi Dave,

I would use the plans as a guide only and draw accurate vectors by hand. It won’t take too long, as the vector drawing and editing tools will make the job a snap!
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Re: jpeg to vector double lines

Postby dave gangster » Sat Jan 12, 2019 12:08 am

Thanks Michael will try that all the best Dave.
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Re: jpeg to vector double lines

Postby FixitMike » Sat Jan 12, 2019 12:39 am

The trace tool draws a line wherever there is a change in color. With a line, the color changes as you approach the line, and the color changes as you leave the line, thus the trace ends up with two lines. One way to get a single line is to open the jpg in Paint (or, I prefer paint.net) and use the paint tool to fill in between the outline of the part with the same color as the line. That way you have a solid to trace and you end up with only a single outline.

Suggestion: After tracing the bitmap, use the Curve Fit tool with Beziers to smooth the lines and reduce the number of nodes.
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Re: jpeg to vector double lines

Postby dave gangster » Sat Jan 12, 2019 3:27 am

Thanks for your help will give it a go thanks Dave.
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Re: jpeg to vector double lines

Postby Adrian » Sat Jan 12, 2019 10:30 am

You need a centre line trace to avoid the double lines which are needed for v-carving. There are several free programs that do centre line tracing and some free online services such as those offered by RapidResizer. I prefer to draw vectors by hand using the bitmap as a guide but a centre line trace tool can get you there faster if you're not used to the tools.
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Re: jpeg to vector double lines

Postby dave gangster » Sat Jan 12, 2019 10:44 am

Thanks Adrian will have a look at it . Dave.
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Re: jpeg to vector double lines

Postby Will Williamson » Sat Jan 12, 2019 12:14 pm

We need the centerline option, in Aspire, This is an Aspire week point.
Other software's have had this for 20 years.
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Re: jpeg to vector double lines

Postby vip-klaus » Sat Jan 12, 2019 6:48 pm

Will Williamson wrote:We need the centerline option, in Aspire, This is an Aspire week point.
Other software's have had this for 20 years.


agree!
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Re: jpeg to vector double lines

Postby dave gangster » Sun Jan 13, 2019 1:48 am

Let; hope some one from Aspire reads this and does something about it as it's not a cheep program, you would think it would be included thanks Dave. :?
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Re: jpeg to vector double lines

Postby gkas » Sun Jan 13, 2019 2:11 am

dave gangster wrote:Let; hope some one from Aspire reads this and does something about it as it's not a cheep program, you would think it would be included thanks Dave. :?


There is. Use a profile toolpath and cut "on the line". Specify whatever bit depth you like.

For Vcarving, you need two lines. The V-bit goes to depth riding between the two lines. That's how you get varying depths, the wider the space, the deeper the carve.
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Re: jpeg to vector double lines

Postby dave gangster » Sun Jan 13, 2019 7:30 am

Hi please read my first post. I took a photograph jpeg file and brought it in to aspire that when the double lines showed this is not for v carve . Trying to make a guitar neck and the double lines make it impossible for me to work with. Thanks fore your reply. Dave
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Re: jpeg to vector double lines

Postby Adrian » Sun Jan 13, 2019 9:57 am

With such a simple shape it would be far quicker to just manually trace over the bitmap using the drawing tools than trace with an automatic program and then correct all the joins, artefacts, misalignments etc that always happen when tracing unless the original image is an extremely high resolution and completely non-aliased image.
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Re: jpeg to vector double lines

Postby LittleGreyMan » Sun Jan 13, 2019 11:04 am

Adrian wrote:With such a simple shape it would be far quicker to just manually trace over the bitmap using the drawing tools than trace with an automatic program and then correct all the joins, artefacts, misalignments etc that always happen when tracing unless the original image is an extremely high resolution and completely non-aliased image.


+1

When you need a center trace, no doubt this is the best solution.

Even if Aspire had an automatic center trace option (which would be an interesting feature when you have a complex artistic drawing to vectorize), drawing manually for simple shapes will give much cleaner vectors.

Automatic tracing may generate a lot of nodes which will require some cleaning to get optimized toolpaths. The fit curves to vectors feature is you friend in this case.
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Re: jpeg to vector double lines

Postby martin54 » Sun Jan 13, 2019 2:58 pm

If People would like Vectric to look at adding centre line tracing as an option in the trace bitmap module then the best thing to do is send a feature request to support. If eonough people request a feature or change then they will look at how it can be done.
It's not something that gets mentioned very often on the forum so there may only be a small number of users who would use it.

Your original post said you had tried other trace programs as well as the one built into Aspire & none of them worked properly, the reason for that is the poor quality of the artwork you are trying to trace, a centre line trace wouldn't give you any better results, in fact they might be far worse :lol:
As Adrian & LGM have said manually tracing is the best option with poor quality artwork & Aspire has all the tools you need to be able to do that. Unfortunately it is something that takes time to learn how to do well but once mastered you can reproduce just about any image regardless of how bad the quality is :lol: :lol:
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