Tracing a picture in CAD

**DennisCNC** · 10-25-2005, 09:29 PM

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.

**wms** · 10-25-2005, 10:44 PM

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..

**cbass** · 10-25-2005, 11:09 PM

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

**wms** · 10-26-2005, 12:16 AM

Yes... you can set the threshold. Manually or let it do it automatically.

**buscht** · 10-26-2005, 10:27 AM

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.

**turmite** · 10-26-2005, 10:41 AM

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

**ger21** · 10-26-2005, 11:58 AM

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.