[ITK] Community Digest, Vol 19, Issue 25

[lokesh kancharla]

hello

i have a problem with when i am using mrf filter in the itk that when
 giving labelled image as the input

On Sun, Apr 12, 2015 at 9:30 PM, <community-request at itk.org> wrote:

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>    1. [ITK-users] Scan line iterators, region iterators and indexes
>       (Olivier Commowick)
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>
> ----------------------------------------------------------------------
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> Message: 1
> Date: Sun, 12 Apr 2015 10:50:59 +0200
> From: Olivier Commowick <olivier.commowick at inria.fr>
> To: insight-users at itk.org
> Subject: [ITK] [ITK-users] Scan line iterators, region iterators and
>         indexes
> Message-ID: <AB39D33A-D350-4B16-A556-3D433901E8FA at inria.fr>
> Content-Type: text/plain; charset="us-ascii"
>
> Hello
>
> I have recently discovered that many ITK filters have switched to scan
> line iterators, apparently for speed reasons. I was therefore wondering
> about switching to them as well in our local code, but I have a few
> questions regarding them.
>
> First, I looked at the code and it seems to me that both region and scan
> line iterators explore regions in the exact same way (apart from the fact
> that you manually need to switch to the next line in the scan line
> iterator). I think the answer is yes, but does that mean that if I explore
> a corresponding sub region of a 4D and a 3D image, the pixel exploration
> order will be the same (e.g. exploring a 3D sub image of a 4d volume and an
> other 3d image)?
>
> Then, there is no scan line iterator with index. Is that something that
> would be doable and if yes, is it something planned or not ? I have the
> feeling that If no the most efficient (in a filter with access to the index
> at each pixel), region iterator with index would be more efficient.
>
> Thanks in advance
> Olivier
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> End of Community Digest, Vol 19, Issue 25
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