[Insight-developers] Image Orientation Progress(2)

[Simon Warfield]

Lorensen, William E (Research) wrote:

>Folks,
>Some more progress on the image orientation upgrade.
>
>I have been worried about performance of the PhysicalPointToIndex and other related transformations in itkImage. I have created a subclass of image called itkOrientedImage that uses the direction cosines to convert between physical space and vice versa. itkImageBase still keeps the direction cosines but does not use them for conversion between physical and index spaces. The only perfomance hit for Imnage may come from making the transformation methods virtual.
>
>(I know Stephen, this is deja vu all over again when we first did image.)
>
>This compromise will permit applications to treat the orientation if desired while allowing other apps to trade-off performance if all images are of the same ilk.
>
>I am still doing this in my local checkout. I'd appreciate comments.
>  
>

I would like to try it out. 

I wonder about the interaction with VTK.  I would like to use VTK to 
render images oriented correctly. 
Do you need to have an OrientedImageToVTKImageFilter ?

>Bill
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>  
>


-- 
Simon K. Warfield, Ph.D. warfield at bwh.harvard.edu Phone:617-732-7090
http://www.spl.harvard.edu/~warfield           FAX:  617-582-6033
Associate Professor of Radiology,          Harvard Medical School
Director, Computational Radiology Laboratory
Thorn 329, Dept Radiology,  Brigham and Women's Hospital 
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