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Provide access to the metadata from the python API

Merged Julien Osman requested to merge 2226-wrap-image-metadata-in-swig into develop

Summary

Provides a wrapping of the ImageMetadata object through the Python API, using SWIG.

Rationale

Fix #2226 (closed)

Implementation Details

Classes and files
  • Creation of an ImageMetadata.i file to describe the new API.
Applications
  • Add a getter/setter to access metadata from the application object
Documentation
  • Update the Cookbook with this new API.

Additional notes

This is a work in progress. Before merging, we still need to:

  • Wrap the geom metadata
  • Wrap the new time metadata (see !868 (merged))
  • Modify the Import/ExportImage of the current API so it provides the ImageMetadata
  • Update the documentation
  • Set up some tests

Copyright

The copyright owner is CNES and has signed the ORFEO ToolBox Contributor License Agreement.

Check before merging:

  • All discussions are resolved
  • At least 2 👍 votes from core developers, no 👎 vote.
  • The feature branch is (reasonably) up-to-date with the base branch
  • Dashboard is green
  • Copyright owner has signed the ORFEO ToolBox Contributor License Agreement
  • Optionally, run git diff develop... -U0 --no-color | clang-format-diff.py -p1 -i on latest changes and commit
Edited by Julien Osman