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  1. #1
    Join Date
    Aug 2005
    Posts
    828

    Tracing a picture in CAD

    Hi all,

    Is it possible to take a pic put it in the background and trace it in CAD and have the dimensions equal the original part? Kind of like digitizing.
    With camera mounted and square to the center of the item photographed.
    Dennis

  2. #2
    Join Date
    Mar 2003
    Posts
    927
    OneCNC XR2 has just such a feature in all of it's product line, from Express to Expert, called "Trace Image.

    It will import and trace just about any picture format.

    No need to do the tracing as it does it automatically..
    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  3. #3
    Join Date
    May 2004
    Posts
    290
    Isn't this essentially a raster to vector feature?

    If so, does OneCNC allow you to set the tracing sensitivity the way stand-alone programs do?

    Carlo

  4. #4
    Join Date
    Mar 2003
    Posts
    927
    Yes... you can set the threshold. Manually or let it do it automatically.
    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  5. #5
    Join Date
    Nov 2003
    Posts
    634
    I do this all the time in Autocad.
    Its not perfect. Meaning, you can't expect +-.001 tolerance, but +-.016 is possible.
    I don't worry too much about the scale of the picture at first. I simply trace it, check the measurements, and then scale it up or down as needed.

  6. #6
    Join Date
    Jun 2003
    Posts
    2103
    Quote Originally Posted by buscht
    I do this all the time in Autocad.
    Its not perfect. Meaning, you can't expect +-.001 tolerance, but +-.016 is possible.
    I don't worry too much about the scale of the picture at first. I simply trace it, check the measurements, and then scale it up or down as needed.
    buscht if I understood WMS correctly, OneCNC will do the work automatically! Now that sounds interesting.

    Mike
    No greater love can a man have than this, that he give his life for a friend.

  7. #7
    Join Date
    Mar 2003
    Posts
    35538
    Quote Originally Posted by turmite
    buscht if I understood WMS correctly, OneCNC will do the work automatically! Now that sounds interesting.

    Mike
    Can someone post a OneCNC raster to vector conversion? Both the raster version and the resulting vector version?

    I've never seen a raster to vector conversion that was acceptable, imo. I'd rather hand trace, the results are so much better it's worth the extra time involved.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  8. #8
    Join Date
    Mar 2003
    Posts
    927
    Here is one..just a quick one..something I grabbed off Google Image..just set Onecnc to automatic..
    Attached Thumbnails Attached Thumbnails logo_1.PNG   ScreenShot_trace.PNG  
    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  9. #9
    Join Date
    Mar 2003
    Posts
    35538
    That's pretty good, but that image is also very clean. Notice the bottoms of the A's. How about something where the edges arent so crisp, and with more curves? Thanks, btw.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  10. #10
    Join Date
    Aug 2003
    Posts
    812

    Talking

    Heres one thats not too clean
    Attached Files Attached Files

  11. #11
    Join Date
    Aug 2003
    Posts
    812
    And the trace, first attempt, no settings changed from default. This took about 5 seconds to complete, and the engrave toolpath took about 2 min.
    Attached Files Attached Files

  12. #12
    Join Date
    Mar 2003
    Posts
    927
    As requested..Again on automatic..no threshold adjustment..
    Attached Thumbnails Attached Thumbnails logo.JPG   trace_2.JPG   trace_2closeup.JPG  
    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  13. #13
    Join Date
    Aug 2005
    Posts
    828
    Good info!!

    I'm not looking for high tolerance, +-1/32 will be just fine for me.

    I just want to do what this thing does but, keeping my arm and leg!

    http://www.nemi.com/digitizer.htm

    Machine mostly used to digitize templates of counter tops to be machined from granite slabs. Price of 13K
    Dennis

  14. #14
    Join Date
    Oct 2004
    Posts
    56
    OneCNC web site doesn't list any pricing, which always scares a hobbyist. What price range does OneCNC run? I would love to find something that did R2V that good, but I imagine it's thousands within OneCNC.

    Thanks,
    Rod

  15. #15
    Join Date
    Mar 2003
    Posts
    294
    Funny you ask,,,I just called today to find out myself.

    The basic mill is $1500 - 15% till the end of this month.
    The next mill is $3000 -15% ya da ya da
    I think they said the next is like 4500 and the last is 6000.

    They did not mention up keep fees and if you want to upgrade to the next version you pay just the difference. You also get free updates for the life of the program if I heard correctly. The mill advantage ($3000 one and she said it is spose to go to $3500 onec XR is released) is the most popular.

    taus
    Thanks,
    tauseef
    www.cuttingedgecnc.com

  16. #16
    Join Date
    Mar 2003
    Posts
    35538
    Thanks guys, those are pretty good results.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  17. #17
    Join Date
    May 2004
    Posts
    142
    I ALSO TRACE WITH AUTOCAD........... IF YOU INSERT YOUR RASTER IMAGE AND TRACE USEING SPLINES WITH ALOT OF DIFFRENT DRAG POINTS (GRIPS) YOU CAN REALLY FINE TUNE THE DRAWING BUT FOR THE MOST PART IT WILL NEVER BE AS CLEAN AS AN AUTOMATIC VECTORIZING SOFTWARE... IM NOT FAMILLIAR WITH ONECNC
    BUT THE PRICE IS WAY TO HIGH FOR JUST TRACEING----
    TRY A PRODUCT CALLED TRACEART ITS ONLY ABOUT $80.00
    http://www.freefirestudio.com/traceart.htm
    I DONT OWN IT BUT I DOWNLOADED THE FREE VERSION AND IT WORKS GREAT

  18. #18
    Join Date
    Mar 2003
    Posts
    35538
    Quote Originally Posted by helix77
    I ALSO TRACE WITH AUTOCAD........... IF YOU INSERT YOUR RASTER IMAGE AND TRACE USEING SPLINES WITH ALOT OF DIFFRENT DRAG POINTS (GRIPS) YOU CAN REALLY FINE TUNE THE DRAWING BUT FOR THE MOST PART IT WILL NEVER BE AS CLEAN AS AN AUTOMATIC VECTORIZING SOFTWARE
    If I trace in AutoCAD, I can get it much cleaner than ANY raster to vector software. It just takes a LOT longer than a few mouse clicks.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  19. #19
    Join Date
    May 2005
    Posts
    925
    I use this free online service (no registration needed) from time to time, it does a pretty decent job:

    http://www.roitsystems.com/cgi-bin/autotrace/tracer.pl

    sometimes is down, but it usually work

    Pablo

  20. #20
    Join Date
    May 2004
    Posts
    142
    OF COURSE IT TAKES LONGER. IVE SPENT HOURS AND HOURS TRACEING USEING AUTOCAD.I FIND THAT WHEN YOU TRACE LIKE THAT YOU CAN CORRECT ALOT OF INACCURACIES TO ACHIEVE EXACTLY THE RESULT YOU WANT ..... BUT SOMETIMES A RASTER TO VECTOR IS GOOD ENOUGH.....YOU KNOW THE WHOLE TIME AND MONEY THING.

    please excuse any bad spelling...im just a machinist!!!!

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