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March 12, 2026Applied Sciences0 citationsOpen Access

Analysis of Tracking Stability and Performance Variations in Multi-Class Structural Damage Objects Under Viewpoint Changes in Disaster Environments

SHSung Min HongHKHwa Seok KimCKChang Ho Kang

Key Points

  • The aim is to evaluate tracking performance of structural damages caused by disasters under changing viewpoints.
  • Combined YOLOv8 detection with BoT-SORT tracker.
  • Implemented camera motion compensation (CMC) for improved tracking.
  • Analyzed metrics including IoU, IDF1, MOTA, and HOTA.
  • IOU improved by +19.63% and +20.23% for cracks and exposed rebar with CMC.
  • Joint use of CMC and Re-ID increased IDF1 by +37.73% for exposed rebar.
  • Delamination and concrete debris showed limited tracking improvement from CMC.

Abstract

This study evaluates the tracking performance of structural damages in disaster environments by combining YOLOv8 detection with the BoT-SORT tracker. Cracks and exposed rebar, characterized by fine and irregular structures, showed high sensitivity to viewpoint changes, with camera motion compensation (CMC) improving IoU by +19.63% and +20.23%. For exposed rebar, the joint use of CMC and re-identification (Re-ID) further increased IDF1 by +37.73%, emphasizing the effectiveness of appearance-based matching. In contrast, delamination and concrete debris, with stable morphology and clear boundaries, exhibited limited benefits from CMC, improving IoU by +11.17% and +3.28%. Analysis of MOTA, IDF1, and HOTA confirms that fine-grained damages require motion- and appearance-based strategies, while stable types maintain high performance through detection consistency. These results highlight the importance of tailored tracking strategies for enhancing disaster-response robots and structural monitoring systems.

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Cite This Study

Hong et al. (2026) studied this question.

synapsesocial.com/papers/69b257a296eeacc4fcec6763https://doi.org/10.3390/app16052615
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