[Insight-users] Gradient Filters and Streaming

[Miller, James V (Research)]

I do not think the recursive gaussian calculations can be streamed.  The
algorithm works by operating of each scanline, column, etc. as one
operation.

>From the header of the RecursiveGaussian header file...

 * This class implements the recursive filtering
 * method proposed by R.Deriche in IEEE-PAMI
 * Vol.12, No.1, January 1990, pp 78-87.



-----Original Message-----
From: Michael [mailto:michakuhn at gmx.ch]
Sent: Friday, June 18, 2004 3:40 AM
To: Insight-users
Subject: [Insight-users] Gradient Filters and Streaming


Hi,

I've noticed that the GradientRecursiveGaussianImageFilter is not 
streaming capable. I'm wondering whether it would basically be possible 
to make it streaming capable. I didn't go into the mathematics of the 
filter, because I thought it's less time consuming when asking this 
question in the mailing list... The question basically is, is the area 
required by the filter to compute the output for one pixel limited or 
does it (theoretically) cover the whole image?

Can you give me any references on which the implementation of this 
filter is based?

Thanks,

Michael



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