Re: Repost of Vertex question...

[Craig Markwardt <craigmnet(at)cow.physics.wisc.edu>]

Struan Gray <struan.gray@sljus.lu.se> writes:

> Craig Markwardt, craigmnet@cow.physics.wisc.edu writes:
> >Brian Koss <bakoss@rainbow.uchicago.edu> writes:
> >> 
> >> 	I have images of polygons connected edge to edge in a
> >> quasiperiodic array, like the one I have attached to this
> >> message... The images are black and white and the edges of
> >> the polygons are distinguisable because they are straight
> >> lines. I would love to be able to use IDL to find the
> >> vertices in this image.
> >
> > Cute. Somehow I don't think this is a program that
> > someone on the newsgroup can knock out in ten minutes.
> 
> 
>     Oh.  I don't know.
>    
>     A quasicrystal will have a limited number of vertex
> orientations, which you can pick out by hand.  Simply cut
> out one of each type of vertex into it's own sub-image, do a
> cross correlation between that and the whole image to find
> where that type of vertex occurs, and add up the resulting
> lists for each vertex type.
...

Cool ideas!

Craig

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Craig B. Markwardt, Ph.D.         EMAIL:    craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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