外观
论文arXiv 2608.053562 个月前
LoDA：一种检测级别感知方法和用于对象级变化检测的多模态感知基准
原文链接：LoDA: A Level of Detection Aware Method and a Multimodal Sensing Benchmark for Object Level Change Detection（arXiv 2608.05356 · 发布日期：2026-08-05）
LoDA: A Level of Detection Aware Method and a Multimodal Sensing Benchmark for Object Level Change Detection
针对城市多时相LiDAR对象级变化检测，提出检测限感知3D管线与LoDA基准，并在Subiaco和Urb3DCD-V2验证。
核心要点
- 现有方法多依赖瓦片和阈值，输出逐点分数，缺少明确检测限和一致对象级标签。
- 方法结合检测限感知配准、几何对象代理、规则语义与实例分割及位移线索。
- 管线将位姿不确定性传播为空间变化检测限，稳定跨时相对应并抑制伪变化。
- 在LoDA上达95.0%准确率、90.8%宏F1和83.0%宏IoU，并优于最佳基线。
验证范围与局限：验证限于Subiaco多时相车载LiDAR地图与Urb3DCD-V2官方点级协议。
英文摘要 (Abstract)
High-definition 3D LiDAR maps are important for autonomous driving and smart-city services, which require reliable detection of object-level changes in multi-temporal urban LiDAR to keep digital maps aligned with the physical world. Existing approaches from raster height differencing to depth image and point-cloud networks often remain tile-based and threshold-driven, yielding per-point scores without explicit detection limits or consistent object-level labels. We propose an object-level 3D change-detection pipeline that integrates detection-limit-aware registration, geometry-driven object proxies with rule-based semantic and instance segmentation, and displacement cues in height, volume, and surface-normal direction to assign five change labels with confidence. By decoupling registration, geometry, and semantics, the pipeline propagates pose uncertainty into spatially varying detection limits, stabilizes cross-epoch correspondences, and suppresses false changes caused by residual misalignment and density variation. We also present LoDA, a level-of-detection (LoD) aware benchmark for the Subiaco district with fused multi-temporal vehicle-LiDAR maps constructed with LiDAR, GNSS, and IMU support, semantic instances, and object-level annotations. On this benchmark, our method achieves 95.0% accuracy, 90.8% macro F1, and 83.0% macro IoU, exceeding the best baseline by 8.7 IoU points and 4.4 F1 points. On the public Urb3DCD-V2 benchmark evaluated under the official point-wise protocol, it reaches 96.81% mean accuracy and 89.52% mean change IoU, improving over the strongest reported baselines by 1.36 points in mAcc and 3.18 points in mIoUch.
作者：Haitian Wang, Xinyu Wang, Sheldon Fung, Xian Zhang, Zichen Geng
来源
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