Some of the large testing data downloads timeout. This should be resolved by this patch:

http://review.source.kitware.com/#/c/21016/

@nslay please review the patch in Gerrit. After merged, we can update the testing Docker image.

I found this ImageIO and was surprised that none of it was implemented.

I went ahead and implemented it myself. I've added abilities to support all of OpenSlide's features in a way that is flexible enough for ITK. I've tested it for accessing level (!= 0) and associated images.

However, I'm still experimenting with ITK IO streaming to deal with level 0 images! ITK seems to use 32 bit integers for sizes and that can cause overflows (e.g. images being 60000 x 70000). I added sanity checks that try to catch these problems.

https://github.com/nslay/ITKIOOpenSlide

Does it look good? Do you want to pull it?

See https://itkpythonpackage.readthedocs.io/en/latest/Build_ITK_Module_Python_packages.html#

• Create setup.py
• Build locally
• Update CircleCI to the 2.0 configuration and add a static build of OpenSlide to the build
• Add AppVeyor configuration for Windows packages
• Add TravisCI configuration for macOS packages
• Upload the packages to PyPI
• Update the README with CI badges, Python package installation instructions

The existing tests should be improved:

• The ITK testing macros should be used (e.g. TRY_EXPECT_NO_EXCEPTION, EXERCISE_BASIC_OBJECT_METHODS, etc.) to avoid boilerplate code.
• The tests should run as long as possible and return the status code at the end (i.e. use a testStatus in and change its value as tests fail: requires changing the test design).
• Improve the argument check message.
• Remove the unnecessary message prints.
• The coding style should conform to the ITK coding style (Appendix Three).

As noted in PR #22, OpenSlide does not build with Visual Studio, so the AppVeyor build should be disabled for now.

Also, the macOS and Linux builds have many dependencies, so may be tools like Conan.io should be considered.

Question
is this program still on maintainance, does it support to transfer itk image to svs format?
or is there any other way to write the itk::TileMergeImageFilter->GetOutput() to svs format