Summary

Improves DEM coregistration robustness through automatic reference DEM selection and NMAD-based stable ground filtering, with expanded xdem coregistration method support.

Changes

• Add NMAD-based reference DEM selection (lowest median NMAD to all other DEMs)
• Add NMAD-based inlier mask for stable ground detection
  • Fallback to slope-based mask when insufficient valid pixels
  • Make inlier mask more robust (multiple dem stack comp rather than last minus first)
• Option to remove DEMs from coreg stack with statistical systematic biases
• Add support for xdem Deramp coregistration method
• Add support for xdem CPD coregistration method
• Add support for xdem LZD coregistration method
• Add ICESat-2 GCP support Add ICESat-2 GCP Generation #2
  • Test xdem AffineCoreg with GCPs
• Update/add documentation
• Add unit tests for new functionality