Article

Polarity-Time Interaction and Multi-Level Reliability for Event-Based Spacecraft Pose Estimation

This study proposes a reliability-aware framework that connects polarity-time localization, geometric recovery, event-CAD refinement, and trajectory optimization in sequence, using a three-branch representation that combines positive events, negative events, and recent-event timing. On the official SPADES challenge test set, the complete system achieves a combined pose score of 0.0474, about 5.4% lower than PASAN+IRIS. Ablations show that base localization with uniform PnP scores 0.0772, while the full cascade reduces it to 0.0514; under identical single-frame observations, quality weighting lowers the score from 0.0549 to 0.0514.

Part of the event: Event-camera spacecraft pose estimation framework achieves 0.0474 on SPADES test set

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