Understanding and Resolving Repartition Issues

🧠 What Is a Repartition Issue?

In LP360 workflows using the Auto Find tool in the Control Report to detect Accuracy Stars, checkerboard or concentric circle targets, a repartition issue refers to a non-uniform distribution of point cloud data across a target used for control point estimation. This can lead to inaccurate center estimation of the target, affecting the geospatial accuracy of the survey.

LP360 flags a repartition issue when:

• The distribution of points across the target is uneven.
• Multiple runs of the algorithm yield inconsistent results.
• The target’s center cannot be reliably estimated due to poor point coverage.

These are warnings, not hard errors, but they can degrade the quality of your control point data.

⚠️ Causes of Repartition Issues

• Use of concentric circle targets with uneven point coverage.
• Low-quality or sparse point cloud data in the target area.
• Software limitations in earlier versions of LP360.

✅ Probable Resolutions

1. Manual Review and Adjustment: Inspect flagged checkerboard or concentric targets and manually adjust their estimated positions if needed.
2. Use Checkerboard Targets: Replace concentric targets with checkerboard targets to improve point distribution and algorithm reliability.
3. Enable Target Size Settings: Add a dummy checkerboard target outside the project area to unlock the Target Size setting in LP360.
4. Update LP360 Software: Upgrade to version v2025.1.151.6 or later, which includes a patch for concentric target repartition errors.

✅ Best Practices

• Use checkerboard targets whenever possible for better consistency.
• Ensure even point cloud coverage across all targets during flight planning.
• Keep LP360 software up to date to benefit from the latest fixes and features.

📬 Need Help?

If you're still stuck, please Contact Support for assistance.