[Insight-users] [ITK Community] PadImageFilter and image origin?

[Johnson, Hans J]

I definitely agree with Brad regarding using the grid illustration method.
 I¹ve found that it is less ambiguous.

Hans


On 3/3/14, 7:54 AM, "Bradley Lowekamp" <blowekamp at mail.nih.gov> wrote:

>Arnaud,
>
>The filters are correct. The figures on the Doxygen page should be
>updated though:
>
>http://www.itk.org/Doxygen/html/classitk_1_1PadImageFilter.html
>
>These filters are similar to the ExtractImageFilter, in that the Origin
>stays the same but the starting index changes. Looking back at the figure
>in Doxygen the origin should be placed at the corner of the red box in
>both images.
>
>Speaking of images to illustrate algorithms, I prefer the image grid
>illustrating many of these geometry concepts over the block done for the
>PadFilter like I did here:
>
>http://www.itk.org/Doxygen/html/classitk_1_1BinShrinkImageFilter.html
>
>Let me know what you think will be the most informative way to illustrate.
>
>Brad
>
>
>On Mar 3, 2014, at 6:03 AM, Cory Quammen <cory.quammen at kitware.com> wrote:
>
>> Arnaud,
>>
>> That sounds like a bug. I would think the padding should affect the
>> origin so as to keep the original image content in the padded image to
>> be at the same physical location as the input.
>>
>> Cory
>>
>> On Mon, Mar 3, 2014 at 5:22 AM, Arnaud Gelas <arnaudgelas at gmail.com>
>>wrote:
>>> Hi all,
>>>
>>> Is it normal that the output image of a PadImageFilter (and
>>>derivatives) has the same origin as the input?
>>>
>>> I just wonder if it is a bug, or not...
>>>
>>> Thanks,
>>> Arnaud
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