[Insight-developers] BayesianClassifierImageFilterTest added

[Bradley Lowekamp]

Hello,

	This is the result of an important change that was made to the  
ImageFileWriter. The writer now executes UpdateOutputInformation then  
it propagates and generates data. It relies on the fact that output  
information is generated in the UpdateOutputInformation method. In  
particular this includes the VectorLength in VectorImages. This change  
exposed a severe bug in ImageToVectorImage and this class where much  
of the MetaData was set at the wrong time! There were the only two  
classes in ITK which I found that operate on VectorImage. I have  
concern that these may have been used as examples which other followed  
(are there more VectorImageFilters in NAMIC?).

The bug that needs to be resolved in this class is moving code in  
AllocateOutputs which sets meta data to a GenerateOutputInformation  
and then determines the correct propagation of the regions with  
multiple input/output.

This is the bug I reported:

http://www.itk.org/Bug/view.php?id=8369

I have been thinking about using this class on some large data set  
microscopy/VHP. At which point I may invest the time in streaming/ 
multithreading of it. But I am not sure when I'll get to that.
	
On Feb 20, 2009, at 5:01 PM, Luis Ibanez wrote:

>
> Hi Brad,
>
> As we discuss during the Tcon,
> a tests was added for the BayesianClassifierImageFilter
> based on the Example in Insight/Example/Statistics.
>
> Looking at the code coverage, it turns out that this
> filter doesn't seem to have implemented the option for
> setting Prior image, although the code for using them
> is already inside. (... I may be missing something here).
>
> Is that the functionality that you wanted to add in
> this filter ?
>
>
>   Thanks
>
>
>      Luis
>

========================================================
Bradley Lowekamp
Lockheed Martin Contractor for
Office of High Performance Computing and Communications
National Library of Medicine
blowekamp at mail.nih.gov


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