[Insight-developers] Function to check if images have the same information

[Matt McCormick]

Hi Cartik,

Thanks for your response, but I think you may have misunderstood my
question -- I am not looking for a mathematical function to compare
the content of two images.  I am looking for a coding function to
compare what in ITK is often called the data Information, the Origin,
Spacing, Direction matrix, starting Index -- the metadata that
determine the physical location of a given pixel index.  Filters like
the BinaryFunctorImageFilter assume that these are the same.

Thanks,
Matt

On Wed, Nov 16, 2011 at 6:30 PM, Cartik Sharma <cartik.sharma at gmail.com> wrote:
> Dear Matt,
>
> The Normalized cross correlation computed for pixel intensity values can allow for image comparison. Please refer thread..
>
> http://www.sterlinglifesciences.com/slsjob.asp?jid=8232&id=7
>
> Best regards,
> Cartik
>
> my iPhone
>
> On 2011-11-16, at 6:15 PM, Matt McCormick <matt.mccormick at kitware.com> wrote:
>
>> Hi,
>>
>> I think the was some discussion about this a while ago, but is there a
>> convenience function that checks where two images have the
>> information?
>>
>> There are algorithms that assume correspondence between the physical
>> location of image pixel indices.  That is, the origin, spacing,
>> direction matrix, and LargestPossibleRegion are the same.  Is there a
>> function that can check this?
>>
>> I see itkIsSame.h, but that only checks if the pixel types are the same?
>>
>> Thanks,
>> Matt
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>