[Insight-users] Neighborhood max value

[Neal R. Harvey]

Well, there you go!

I forgot to look in the review directory. But, with that knowledge, it 
seems as if the problem
of writing a neighborhood maximum operator is essentially already solved.

Cheers

robert tamburo wrote:
> There's a 'box' structuring element defined 
> in itkFlatStructuringElement.h (review directory)
>
> On Tue, Mar 1, 2011 at 1:23 PM, Neal R. Harvey <harve at lanl.gov 
> <mailto:harve at lanl.gov>> wrote:
>
>     I'm thinking you may not want or need to go to the bother of writing
>     such a function. A neighbohood maximum operator is a dilation with
>     a flat
>     structuring element and there already exists an operator within
>     ITK to do
>     dilation. You would just need to define your structuring element
>     appropriately
>     for the neighborhood in which you are interested. I can't see any
>     existing code
>     that would create a square (cube for n-D) structuring element,
>     though (there is code for balls and crosses), but it might not be
>     that hard to create "cube" structuring element code by making some
>     simple modifications
>     to the ball structuring element code. Then, all you'd need to do
>     was use this
>     to create your structuring element (i.e. define the neighborhood
>     of interest)
>     and then use the dilation function that already exists.
>
>         Message: 3
>         Date: Tue, 1 Mar 2011 16:38:26 +0200
>         From: john smith <mkitkinsightuser at gmail.com
>         <mailto:mkitkinsightuser at gmail.com>>
>         Subject: Re: [Insight-users] (no subject)
>         To: David Doria <daviddoria at gmail.com
>         <mailto:daviddoria at gmail.com>>, insight-users at itk.org
>         <mailto:insight-users at itk.org>
>         Message-ID:
>              
>          <AANLkTimX-o4UkLVeWfitbL1b2sLo3h-TE7Okds3sxe9v at mail.gmail.com
>         <mailto:AANLkTimX-o4UkLVeWfitbL1b2sLo3h-TE7Okds3sxe9v at mail.gmail.com>>
>         Content-Type: text/plain; charset="iso-8859-1"
>
>         Hello,
>
>         Well, I have made all the changes and my program gives me (I
>         think) correct
>         results. But I have some questions to continue my project. As
>         a following
>         step, I want to write all my max values from every
>         neighborhood iterator in
>         a single pixel of an output image. How can organize my max
>         values as an
>         object (maybe by creating a new region iterator?), to put it
>         through a new
>         writer filter, in order to take my output image? Also,
>         supposing that I have
>         taken my output image, then this project which will be
>         consisted of an .cxx
>         and  .txt file format (for visual studio and cmake), could be
>         considered as
>         a new developed Filter?
>
>
>     -- 
>     HARVE (Neal R. Harvey)           Email: harve at lanl.gov
>     <mailto:harve at lanl.gov>
>     ISR-2                            Phone: 505 667 9077
>     Los Alamos National Laboratory   Fax: 505 664 0362
>     Los Alamos, NM 87545, USA        Mail Stop: D-436
>     The generation of random numbers is too important to be left to
>     chance.
>
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-- 
HARVE (Neal R. Harvey)           Email: harve at lanl.gov
ISR-2                            Phone: 505 667 9077
Los Alamos National Laboratory   Fax: 505 664 0362
Los Alamos, NM 87545, USA        Mail Stop: D-436
The generation of random numbers is too important to be left to chance.