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Subject:
How to find edges in a picture and convert to vector format?
Category: Computers Asked by: sundari_haseena-ga List Price: $10.00 |
Posted:
03 Aug 2005 11:11 PDT
Expires: 02 Sep 2005 11:11 PDT Question ID: 551281 |
I have a photograph of an item that is made of flat metal sheet about 1/8" (the thickness is irrelevent). The piece is about 3'x2' and is cut out in the shape of a cow. The shape has many straight and curvy edges. I want to scan the photo and then use probably photoshop to find edges and then convert the resultant line drawing into vector format. My goal is to use the vector drawing to feed into a laser cutting m/c to cut out the shape. I would like to know: Will photoshop be a good tool to find edges in the picture or convert the outline of the pic into vector format? If not can you suggest a better way to achieve it? Also, if photoshop is the way to go, can you suggest how do i achieve it in photoshop. | |
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There is no answer at this time. |
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Subject:
Re: How to find edges in a picture and convert to vector format?
From: solentech-ga on 03 Aug 2005 11:45 PDT |
Well i have figured out a way i can achieve this. but for best results can maybe post the picture online or email it to me. i would convert it for you and include directions for future reference. Otherwise if you cannot do that, please describe the photo and how you want the vector drawing to be, do you want simple cut out lines like a trace? |
Subject:
Re: How to find edges in a picture and convert to vector format?
From: solentech-ga on 03 Aug 2005 16:22 PDT |
Well the best i can give you is photoshop and fireworks will be able to do what you want with some experience in those programs. It wont be done with simple follow to do instructions at least i am not personaly capible of giving them with the unlimited possibilies of what the photo may need to be prepped for a drawing. my offer to you is to scan the image possible and let me reconstruct it. |
Subject:
Re: How to find edges in a picture and convert to vector format?
From: zodiacman-ga on 09 Aug 2005 23:07 PDT |
Dear Sir, One idea is to lay the cow-shaped metal piece down on a blank sheet of ANSI D sz paper ( 34"W x 22" H) or Esz ( 44"x36"). Then use a drafters pencil to carefully trace around the metal cow. This will leave the outline of the cow on the blank paper. Then, if you have a CAD program that will let you digitize using the Mouse, you could open a new file in the CAD program, set up a D size page format, and then Digitize all along the outline of the cow. This will effectively create an image of the cow in the CAD file, and the line elements will all be vector, not raster. |
Subject:
Re: How to find edges in a picture and convert to vector format?
From: mugo-ga on 15 Aug 2005 14:11 PDT |
The easist tool to use for this is Corel Trace. You can download and try a fully functional copy of this from http://www.corel.com/servlet/Satellite?pagename=Corel3/Downloads/Trials (Trace is part of the CorelDRAW Graphics Suite 12). Corel is an excellent vector-based graphics suite and is widely supported by various cutters and cutting applications. You should be able to export the results to a variety of formats - specifically EPS and DXF are the two that the application running your laser cutter should be able to work with. If you want to use Photoshop, you can create selections based on the areas you want. Using the Magic Wand in combination with the Magic Lasso with a relatively low Tolerance setting (in the 1-32 range) will probably give the best results. As you select, I recommend saving it along the way (Select>Save Selection). Once you have created your selection, open the Paths Window and use the Convert Selection to Path button to convert your selection to a path (hold down the ALT key as you press the button to set the Tolerance for fitting the path). Finally, once you have created your path, choose File>Export>Paths to Illustrator to export an AI file (the AI file is basically the same as an EPS). My last note, though, is that Corel Trace will give you better quality and is much easier than using Photoshop for converting a raster image to a vector one. |
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