I create volumes from image sequences and do some processing and filtering in 3D and would like to get the slices of the volume into COP to do some 2D filtering. I guess i would have to write an image sequence of the slices of the volume to do this, but what would you suggest would be the best way to get there ?
My first idea was to copy the volume into a python numpy array and from there with pyEXR or something similar, but I thought maybe there is a more native houdini way to do this ???!!!

best way would be to sample volume directly in Vop Cop Generator

Can you build a VOP COP Generator that reads the volume geometry and does the slicing and filtering directly in COPs?
Run a sequence where you slice through the volume at a different point per frame?

I dont have a problem with generating an intermediate image sequence, but I will have a look into the vop COP generator. Thanks a lot for the tips.

jeff
Can you build a VOP COP Generator that reads the volume geometry and does the slicing and filtering directly in COPs?
Run a sequence where you slice through the volume at a different point per frame?

OMG !!! I just opened your hip file and this is exactly what I was looking for !!
I just love houdini and its way of solving things !!!
This is much better than my python -> numpy -> python exr way of solving this problem !