Images in physical space in Python

[matt.mccormick]

@blowekamp

There was a recent discussion of how to handle time. Similarly there are a couple different ways to order color. i.e. CXYZ, XYZTC etc.

@blowekamp

There is also the definition and order of an “index”. We mean (i,j,k) where i is the fasted changing index, but then ndarrays are indexed via [k,j,i] .

It is reasonable to apply the conventions of scikit-image for indexing, space, channel, and time order. These are compatible with how data is natively organized in ITK and NumPy array interfaces to itk.Image. That is, [k,j,i] indexing,

@blowekamp

I expect others from different domains will have additional concerns and comments to improve the specification too.

We can add documentation to a repository and use pull requests and line-based comments for additional discussion.