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Dataset Card for PMOF:
Dataset Creation
Acquisition
Data were collected in May 2025 during demonstration runs of the autonomous rail vehicle Monocab. Participation was voluntary, and all participants provided written informed consent. No behavioral instructions were given, resulting in natural behavior, although some participants deliberately performed actions such as falling, covering themselves, or fighting to broaden the range of captured activities.
Recordings were captured using a Vivotek FE9180-H-v2 fisheye camera mounted on the vehicle ceiling at 1.5m, providing a 180◦ top-down view. The camera operated in WDR-Pro mode and recorded at a resolution of 1920×1920 pixels with a variable frame rate of 8–15 fps. Each recording corresponds to a single ride with a unique passenger group, at speeds of up to 20 km/h. Additional empty-cabin frames were collected during vehicle shunting to provide background-only samples.
All frames were manually reviewed, and those showing individuals outside the vehicle or visible phone screens were removed. Temporal continuity is largely preserved, with only minor gaps due to camera dropouts and privacy-related removals in 5 of the 30 passenger recordings. These discontinuities can be identified via incrementing frame IDs, which preserves suitability for video-based tasks.
Annotations
- Two annotators manually labeled the data using a local instance of the Computer Vision Annotation Tool, with review by a third annotator. The annotations follow the MS COCO format and use human-aligned rotated bounding boxes. Each box is assigned one of three classes (person, clothing, bag) and is linked to a consistent tracking identifier. Person instances additionally include an action attribute (seated, seated on the ground, standing, lying).
Dataset Statistics
- The PMOF dataset comprises 19,696 frames across 31 recordings, including background-only frames (rec0) and 30 passenger recordings. These passenger recordings contribute 19,345 annotated frames with 44,718 person instances from 67 distinct participants. Recordings range from 294 to 1,061 frames and contain between one and four passengers, with an average of 2.3 passengers per recording. Most passengers remain seated throughout the ride.
Citation
BibTeX:
@article{wermuth_pmof_2026,
title = {PMOF: A Dataset and Benchmark for Passenger Monitoring Using Overhead Fisheye Cameras},
author = {Wermuth, Stella Katharina and Ahmed, Qazi Arbab and Neumann, Klaus and Jungeblut, Thorsten},
journal = {Proc. 2026 IEEE International Conference on Advanced Visual and Signal-Based Systems (AVSS)},
year = {2026},
month = {Sep.},
note = {accepted, to appear}
}
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