[Insight-users] Simple image property interrogation

[Karthik Krishnan]

Chris Farmer wrote:

> Hi. I’ve got a simple question about whether/how ITK can be used to 
> interrogate some simple image properties such as dimensions and color 
> depth. If I just have a path to an image file, can I get this 
> information? I’m currently using ImageMagick’s Magick++ API for these 
> low-level tasks, but there are other capabilities of ITK that I want 
> to use, so I’d prefer not to have to read the image twice like I’m 
> doing now.
>
ImageIO's provide a method ReadImageInformation that you can leverage to 
perform this query.

Imagine you have your application:

switch( case )
{
itk::ImageFileReader< itk::Image< float, 3 > >::Pointer reader = 
ReaderType::New();
reader->SetFIlename(...
reader->GenerateOutputInformation();
reader->GetOuptut()->Print(std::cout);
}

GenerateOutputInformation() leverages the ReadImageInformation method to 
get the image metadata. Usually this just reads the headers.


> I looked through the example apps in the source distribution, but 
> nothing appeared to address this.
>
> Thanks,
>
> Chris
>
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