[Insight-users] Testing GPU-based Median Filters

[Christopher Share]

Hi,

I'm in the process of developing several different GPU-based median filters for the ITK (as part of the 09/10 VPAC Summer Project - this year's project doesn't have a web page yet but here's a link to last years' - http://www.vpac.org/?q=node/290). I have a question regarding the testing of the filters. I'd like to test the performance of the GPU filters under different conditions, however I'm not clear about how these filters are used in practice.

For the purposes of testing the filters I have the following questions:

1. What image sizes should be tested? I was thinking of "small", "medium" and "large" but I'm not sure what these sizes would be wrt to the ITK. 

2. Should I test RGB/RGBA images as well as greyscale images?

3. For the median filter case, what radius's should be tested? Should different radius's in different directions be tested?

Cheers,

Chris Share