Support for multi-page TIFFs with differing dimensions

[ctrueden]

There are no restrictions on whether the image planes contained in a multi-page TIFF have the same width and height as one another. In fact, we have an example where this is not the case; see tiff/ajeet/157-305-A1_P_201303151646.tif in the data share. It has 12 pages of different sizes. (As an aside: one of the planes is also over the 2GB limit somehow; we should investigate and support that as well, but that is a separate issue.)

SCIFIO should detect this situation and report one Image per unique width x height pair.

/cc @avivekan

[ctrueden]

@hinerm: No rush on this. But it would be good to file another issue for the 2GB problem mentioned above. I was too lazy. 😉

[lannybroo]

This issue is important to me personally. Systems that I work with often produce multi-page tiffs with 4 pages: 2 related pages at one width x height, and 2 related pages at another width x height.

At the moment, my work-around for ImageJ1 was to write a plugin that gets triggered by HandleExtraFile types when it sees a TIFF with these system's custom extension which is ".mpt".

[ctrueden]

There was a related bug report on the ome-users list about essentially this same limitation.