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A false loop closure folds the map

Reject one ambiguous loop without disabling loop closure globally.

Pairs with Mapping and SLAM in Mobile Robot Reliability. Read the concept first, then diagnose it here.

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Operator report

Two similar loading bays are merged, bending the warehouse map.

Ubuntu 24.04, ROS 2 Jazzy, Gazebo Harmonic, RViz telemetry, differential-drive warehouse robot

System boundary

Trace only the relevant path.

place candidateloop-closure scorepose graph optimization

How this lab works

You diagnose it — no command list.

Open the repair workspace and gather your own evidence in a real terminal. No diagnostic commands are handed to you — finding the fault is the exercise. Stuck? Progressive hints unlock inside the workspace.

Verification

Your repair must pass more than the visible symptom.

  • False closure rejected
  • True return closure accepted
  • Hidden regression behavior
  • Root cause explanation