[Insight-users]Accessing pixel data in png file

[Luis Ibanez]

Hi Siddrarth,


Did you called Update() in the reader before calling GetPixel() ?

How are you getting the index range for GetPixel() ?
are you taking it from LargestPossible region ?

Why are you using GetPixel() instead of using ImageIterators ?
GetPixel() is very slow compared to ImageIterators.


You may find useful to look at the Image Iterators chapter
in the ITK Software Guide


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

Section 11.3, "Image Iterators", pdf-page 738-776.



    Regards,


        Luis


----------------------
Siddharth Vikal wrote:
> Hello,
> 
> Am new to itk and am trying various exampes. I'm trying to access
> pixel data of a png file (from example data), but getting runtime
> error while using GetPrixel function. The error is some access
> violation, unhandled exception.
> 
> can anyone please help?
> 
> thanks
> siddharth
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