ImgOpener openImage support for directly reading IRandomAccess

[kmader]

Currently the ImgOpener tool only allows data to be opened from a String or IFormatReader. While it is possible to implement entirely new LocationServices to read files from another file-system, it would be easier for some projects to enable creating a reader directly from a IRandomAccess or InputStream and a string indicating the filename (for selecting types). Particularly when creating a library which uses ImgLib2 to read and process images, it is quite heavy to write a new custom LocationServices when reading is the only needed ability.

[MichaelEllis]

My twopennyworth:

For my project I will need to be reading TIFF images that are stored within a Zip file (i.e. multiple TIFF images stored within a single zip file).

I will be wanting to load a TIFF images from an InputStream.

[dietzc]

I think this should be adressed here: https://github.com/scifio/scifio. Maybe this issue is related: scifio/scifio#235. @hinerm can you comment on that?

[ctrueden]

Yes, this work is in progress as part of the robust-io work in SJC and in SCIFIO.

Essentially the I/O package of SJC is being overhauled to eliminate usage of strings as IDs, in favor of a flexible Location plugin. (Strings will still be usable for convenience, but will be automatically converted to Location objects internally in that case.)

The robust-io work is my top development priority, so it is just a matter of time till I have some time to code again. Just too busy in recent months with the ImgLib2 release, Fiji stack upgrade, etc.

[ctrueden]

I am closing this, since it is really a duplicate of scifio/scifio#237.

There is now an initial PR for the underlying framework which will make it all possible: scijava/scijava-common#166. We are getting closer! 😋