[Insight-users] Linear interpolator bug in IsInsideBuffer()

[Luis Ibanez]

On Wed, Jun 16, 2010 at 11:36 AM, Simon Warfield <
simon.warfield at childrens.harvard.edu> wrote:

> insight-users-request at itk.org wrote:
>
>> Date: Wed, 16 Jun 2010 09:46:09 -0400
>> From: Luis Ibanez <luis.ibanez at kitware.com>
>> Subject: Re: [Insight-users] Interpolation and centered pixel
>>        coordinates
>> To: D?enan Zuki? <dzenanz at gmail.com>
>> Cc: insight-users at itk.org
>> Message-ID:
>>        <AANLkTikQna2jtbdcwpMTZtWmGC5KZnEMf1dTN2_9fOY- at mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> D?enan,
>>
>> We did quite a heavy testing when we fixed
>> the problem of centered pixel coordinates.
>>
>> The Dashboard was green when we released
>> ITK 3.18, which give us some confidence on
>> the correctness of the code.
>>
>> --
>>
>> Please note that it is your responsibility to call
>>
>>     interpolator->IsInsideBuffer( point )
>>
>>
>>
>
> There is a bug in the interpolator API.  The expectation of the API is that
> if the interpolator can legally address the coordinates of the point then
> all of the surrounding discrete indexes can be legally addressed.  Of course
> this is not always true, but last time I looked, none of the interpolators
> check that the discrete coordinates they look up are still inside the image.
> It is a problem for interpolation near the boundaries of the image.  This is
> particularly a problem for interpolators with a large window region.
>
> --Simon
>
> ------------------------------------------------------------------


Simon,

Thanks for pointing this out.

This seems to be the same problem that Ivan is reporting.


Dzenan,

Please to log a bug entry for this issue:
http://public.kitware.com/Bug/my_view_page.php


      Thanks


             Luis
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