Hi, I would like to get vector file and used as dfx file for ungraving. Right now I try optin as "edge detection" but I will get two lines picture. If I will use center line I get picture not as original.Please look at the pictures. Is there some simply way how to do that?

The image is not the best for tracing because of it's small size. But here is the method I would use.

Thanks thats works :)

Thanks thats works :)

Hi thats works but even that when I open in Autocad there is still two lines and all the time I have to delete one line. Can I avoid this?

There is usually the foreground trace and the background trace. The traces should be ungrouped and the background should be deleted.

I cant do like that or Im doing something wrong. Im not sure there is not visible at the video what are you chose. I cant set up midle line as you. I have all the time like this.

Please share the original artwork before tracing.

Here we go.

Seems to work here. Can you try the settings shown here?

Yes thats works like that. I will make bitmap, but I need just shape curve to use the picture for my laser engraving,

Yes thats works like that. I will make bitmap, but I need just shape curve to use the picture for my laser engraving,

I need just sharp and clear curve (spline) around the shape. Something like this but just one sharp clear line. When I open this file in autocad or Ezcad or other program I have all the time two curves instead of one.

I save it as DXF

Do not use the edge detection.

Please observe the settings in the picture attached.

hey friends i seem to have a similar, yet slightly different problem:

I've been desperately trying to find my way through inkscape bitmaptracing in order to reproduce some line-art-tattoo-sketches for to send over to an axidraw pen plotter i just built. 

Sadly it doesn't quite do what i want and i seem to be to noob about the technical side of it to help myself.

MY PROBLEM IS: 
I want to reproduce a pdf sketch AS SEEN, so i'd love to have fewest possible modification to it, as the ductus, the "style" of the line-art is really important to my customers, and it quickly becomes "something else" when using the "trace bitmap" tool.
I'll attach 3 photos, black/White being the original painting and then the 2 options that have worked best, but not satisfying yet:

The best 2 options i found so far is (both single-scan)
a) using the brightness detector (first option). Which traces the sketch perfectly, only that it (of course) gives out double-lines (instead of 1 original line) as it detects the "lines" as "surfaces" and the draws vectorlines around the edges i guess. (see "a")

b) using the line-trace. This had got the right idea, but (of course) struggled with the areas where multiple lines in the original sketch morphed into a black surface.

So what (i guess) i might need would be some tool somewhere in the www that functions like "trace bitmap line trace" more or less, but lets me determine a certain "width of line" in mm or pixels, so that i can tell the machine how thick the lines of my original drawing are, and it converts those into an svg, that, when i give the pen-plotter a 2mm-size pen, it would reproduce the painting more or less exact! 

Please, anyone who solves this problem saves himself some big karma and anyone who manages to look into it deep and makes it posswible for me to pen-plotter-copy all my tattoo and fineline pdf's with a single trick for to use each time; I'd b willing to paypal some 50 eur or whatever.
You see, I'm desperate here :D

Thanks guys and gals
xx

Seems you lost track of your own thread: https://inkscape.org/forums/beyond/please-help-problems-vectorizing-fine-line-art-into-svg-properly-thanks/#c55608

 BTW: is 142x190px all you can offer?

Sorry, I found this one just a bit later and thought it might be more related tbh, so maybe this would be the place for it rather than another seperate thread. Shall i delete the old one?

regarding the picture: of course not, that was only screenshots as for one to understand my story. I use tiff of 40 mb, which was too big to upload here
If you wanna try helping out: here you go for a pdf :) Let me know if you find any way...
if it doesnt give option to filled areas but only line thats also "ok" i guess, as long as the line does represent the original picture more accurately then the line trace does so far.... the brightness-trace worked really fine and accurate, if only one could let the bot draw 1 centerline through the 2 outlines it gave out, like something like a "fill in line"...

i also checked out plotterfun on mitxela, which's pixeltrace came close, yet doesnt do lines but dots.  and this one here: https://dl.acm.org/doi/fullHtml/10.1145/3202661#fig1 these guys seem to really have pretty much solved it - yet i dont see (or fully understand) how i could make use of there method