[Insight-users] Making a normalization filter

[Andinet Enquobahrie]

Prename Surname wrote:

> Hello. I want to write a very simple filter in order to get a better 
> understanding of how i can write filters in ITK.


A detailed information is available in the ITK software guide.  There is 
a whole chapter dedicated to "How to Write a Filter"
(Chapter 13 )

http://www.itk.org/ItkSoftwareGuide.pdf

-Andinet

> I have not been able to find any examples or guides on how a filter is 
> written ie. what interfaces it should implement, which class it should 
> inherit from etc.
> So i was hoping someone could help me with some guidelines for how i 
> can write my own filter that can accept an input image, access the 
> data in this image, scale and translate it so that it is normalized 
> ie. between 0 to 255.
> I have wild data which ranges from -300000 to 300000.
> So basically what my filter should do is only
>  
> newImg=(oldImg+min(oldImg))/max(oldImg+min(oldImg));
>  
> where min finds the pixel with smallest value and max finds the pixel 
> with maximum value
> newImg is the normalized image and oldImg is the input image that 
> should be normalized.
>  
> This a very simple procedure, probably the most simple at all. So how 
> can i put this functionality in a filter that i can use in ITK?
>  
> Guidelines would be great, links would be great and example would be 
> fantastic.
>  
> I really hope someone can help me a bit.
>  
> Thank you very much in advance and many regards
>
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