[Insight-users] Detection of Composite edge

[Miller, James V (Research)]

I believe "composite edges" refer to the case where there are multiple
edges in near proximity.  Standard edge detection theory is based 
on an assumption that each edge is a step edge in isolation.  In 
practice, images have edges in close proximity and the point spread
function of the acquisition process causes one edge to bias another.

Composite edge detection acknowledges that multiple edges can be 
in close proximity.  The question is posed as what is the likelihood
that there are k edges in this region.  I saw a paper on composite 
edge detection in CVGIP: Image Understanding several years ago.  I
used to have that issue sitting next to my computer here but it looks
like someone walked off with it. 

In any event, if this is what Mohamed Lemine is looking for, then
ITK does not have such a filter.

Jim




-----Original Message-----
From: Luis Ibanez [mailto:luis.ibanez at kitware.com]
Sent: Thursday, January 22, 2004 1:49 PM
To: Mohamed Lemine Abdel Ghader
Cc: insight-users at itk.org
Subject: Re: [Insight-users] Detection of Composite edge



Hi Mohamed,

Could you please clarify what you mean  by

          "composite edges"

Do you mean the edges with multiple
intermediate values ?


Like


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Please let us know,


Thanks


   Luis

------------------------------------------
Mohamed Lemine Abdel Ghader wrote:

> Hi! insight-users,
> I had a requirement to create a class - methodes -, 
> 
> which detects composite edges in an image. 
> 
> Does ITK has any class or functions, that surves my requirement? 
> 
> Please could you suggest any solution. 
> 
> Thanks. 
> 
> Moh. Lemine
> 
> 
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