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Re: Drawing on an image in Mathematica

  • To: mathgroup at smc.vnet.net
  • Subject: [mg126377] Re: Drawing on an image in Mathematica
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Sat, 5 May 2012 04:12:25 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <201205040223.WAA08594@smc.vnet.net>
  • Reply-to: murray at math.umass.edu

Yes: use Import to get the image into a Mathematica notebook. Then use 
the Graphics Tools to draw just like you would with many sketching programs.

On 5/3/12 10:23 PM, Julian Francis wrote:
> Dear all,
>
> I have a binary image in which I'd like to use the mouse to draw
> (freehand) on top of the image, and use this in Mathematica.
>
> Presently, I can import the image into a painting program, use its
> sketching facilities, then cut and paste into Mathematica. I can
> extract the matrix if I wish by using ImageData.
>
> Is there a way of drawing on the image directly in Mathematica to save
> me cutting and pasting between programs?
>
> I've worked out how to create a graphic and draw into it using the
> Mathematica graphics drwaing tools, but my problem is either the
> graphic is far too large, or if I shrink it down
> (I want to work on matrices 16x16), the resulting picture is far too
> small. I want to draw into a matrix 16x16, but it be large enough for
> me to see easily.
>
> Thanks,
> Julian.
>

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305



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