Update licensing information in README

[aylward]

Clarified licensing terms for NVIDIA Omniverse and other dependencies.

Summary by CodeRabbit

• Documentation
  • Updated the license information to distinguish NVIDIA Omniverse licensing.
  • Added optional non-commercial licensing details for supported medical imaging models.
  • Documented required license-key handling and how to disable these models.

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between ae78829 and 52ac137.

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• README.md

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Walkthrough

The README now separates NVIDIA Omniverse licensing from optional non-commercial licenses. It documents license-key requirements for NVIDIA Segment CT MRI weights and TotalSegmentator research-only models, including the set_has_academic_license(False) configuration.

Changes

Licensing documentation

Layer / File(s)	Summary
License section updates README.md	The License section identifies NVIDIA Omniverse licensing and documents non-commercial license restrictions, license-key behavior, and the set_has_academic_license(False) method.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• Project-MONAI/physiotwin4d#114: Updates the same README licensing section with NVIDIA Omniverse and Segment CT/MRI licensing details.

Suggested reviewers: copilot

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch clarify_research_licenses

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[Copilot]

Pull request overview

Updates the README’s License section to clarify licensing considerations for NVIDIA Omniverse and other optional dependencies used by PhysioTwin4D.

Changes:

• Reworded the README license text related to NVIDIA Omniverse and added a direct link to the Omniverse license agreement.
• Added a “Non-commercial Licenses (optional)” subsection covering NV-Segment-CTMR weight restrictions and TotalSegmentator research-only model licensing behavior.

Suppressed comments (1)

README.md:143

• The TotalSegmentator bullet wraps onto a new line without indentation and uses triple backticks for inline code, which can break list formatting. Indent continuation lines and use single-backtick inline code spans for method/class references.

* TotalSegmentator includes the optional use of some of their research-only models. Using those models assumes that you have
the appropriate license key install, otherwise an error occurs.   Those models can be disabled by calling ```set_has_academic_license(False)``` member function of the ```SegmentChestTotalSegmentator``` class.

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