Cited by 1Autonomous Vehicle Technology and SafetyAdvanced Vision and ImagingTransportation Systems and Logistics

Investigating the Impact of Environmental Factors on Autonomous Vehicle Sensors

Open access
Csikor, Daniel, Hollósi, János, Szauter, Ferenc·2025·SMTS 2025

Abstract

The operation of autonomous vehicles requires the coordinated operation of a number of sensors to improve road safety. Data from the sensors are processed by vehicle control algorithms, which then make decisions. If there is a degradation in the efficiency of these sensors, the reliability of the whole system is affected. Different weather conditions affect the efficiency of the system. The research has identified the weather factors that affect the performance of the sensors based on a literature search. Following the literature analysis, a simulation test was carried out to investigate the extent to which the detection performance of a stereo video camera installed in an experimental autonomous vehicle is affected when part of the sensor is covered by a contaminant. The measurement was followed by a comparison of the vehicle and obstacle detection efficiency when the camera is completely clean and when part of the camera is covered.

AI snapshot

Written from the paper’s full text.

TL;DR

This study evaluates YOLOv8–YOLOv12 object detectors on a custom 558-image dataset augmented with synthetic water-droplet, mud, and sunflare perturbations to simulate sensor contamination. YOLOv10 generally gave the best precision and F1-score, while YOLOv12 showed better recall in some high-intensity scenarios.

Key findings

  • Across all model sizes and perturbation types, YOLOv10 consistently achieved the highest precision and F1-score, especially under more challenging noise levels; YOLOv12 exhibited slightly better recall in several high-intensity scenarios, particularly for mud contamination and sunflare glare.
  • At lower IoU thresholds (0.8 and 0.85), YOLOv12 and YOLOv10 achieved the highest number of best results, especially in medium and large parameter ranges; at IoU 0.9 and 0.95, YOLOv10 dominated across all model sizes.
  • For small models under mud contamination at intensity 0.2, YOLOv10 reached precision 0.6768, recall 0.6390, and F1 0.6573, compared with YOLOv8 at 0.5639, 0.4815, and 0.5194; at intensity 1.0, YOLOv10 had precision 0.5795 but recall 0.0099 and F1 0.0195, while YOLOv12 had recall 0.0398 and F1 0.0714.
  • Table 2 reports COCO mAP 50-95 values including YOLOv12n 40.6, YOLOv12s 48.0, YOLOv12l 53.7, YOLOv10n 38.5, YOLOv10s 46.3, and YOLOv10l 53.2.

Methods

  • A custom dataset of 558 images at 1280 × 500 pixels was extracted from a short video recorded during a drive around the Széchenyi István University campus in Győr, Hungary, on public roads; average vehicle speed was approximately 20–25 km/h. Images were manually annotated following COCO class definitions for vehicles (cars, trucks, buses, motorcycles), pedestrians, and bicycles.
  • Each image was artificially distorted using Albumentation v2.0.8 with three adversarial visual perturbations, each at five intensity levels: RandomFog (p ∈ {0.1, 0.2, 0.3, 0.4, 0.5}), Spatter (p ∈ {0.2, 0.4, 0.6, 0.8, 1.0}), and RandomSunFlare (flare_roi = (0, i, 1, i + 0.2), i ∈ {0.0, 0.1, 0.2, 0.4, 0.6}).
  • YOLOv8 through YOLOv12 models in the Ultralytics framework (v8.3.221), pre-trained on COCO, were evaluated using precision, recall, and F1-score at four IoU thresholds: 0.8, 0.85, 0.9, and 0.95, yielding 45 evaluation metrics.

Limitations

  • Stated: synthetic perturbations enable controlled and reproducible testing, but real-world contamination may exhibit more complex patterns; future work should include validation on real sensor data to confirm transferability.
  • Evident: the dataset is small (558 images) and limited to one campus/low-speed urban driving (20–25 km/h), so results may not generalize to rural or highway conditions or higher speeds; the paper notes future plans for higher-speed testing and lane, traffic sign, and traffic light recognition.
  • Evident: the abstract describes a stereo video camera contamination test, but the methods and results evaluate YOLO models on augmented images, not a physical stereo camera or real contamination; no real sensor data were used.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.3390/engproc2025113015

Cites

21 of 21 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

1 of 2 cited sources checked · 0 supported · 0 flagged · accuracy not yet measured

  • Premisecitation

    Rain and snow have a significant impact on detection accuracy because water droplets and snowflakes can distort light under certain conditions, confusing the sensors and causing them to transmit less and less accurate data to the data processing system.

    “Rain and snow have a significant impact on detection accuracy because water droplets and snowflakes can distort light under certain conditions, confusing the sensors and causing them to transmit less and less accurate data to the data processing system.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [8] Linnhoff, C., Hofrichter, K., Elster, L., Rosenberger, P., and Winner, H. (2022). Measuring the Influence of Environmental Conditions on Automotive Lidar Sensors. Sensors, 22. source

      Split into 2 atoms — 0 confirmed, 2 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

      Experimental — accuracy not yet measured
  • Findingown data

    YOLOv10 demonstrated the most stable and dominant performance at higher thresholds.

    “while YOLOv10 demonstrated the most stable and dominant performance at higher thresholds”
    Quote in the paperSubstantial claim
  • Findingown data

    At the lower IoU thresholds (0.8 and 0.85), YOLOv12 and YOLOv10 models achieved the highest number of best results, particularly within the medium and large parameter ranges.

    “At the lower IoU thresholds (0.8 and 0.85), YOLOv12 and YOLOv10 models achieved the highest number of best results, particularly within the medium and large parameter ranges”
    Quote in the paperSubstantial claim
  • Findingown data

    As the IoU threshold increased to 0.9 and 0.95, YOLOv10 consistently dominated across all model sizes, achieving the highest number of best results independently of the number of parameters.

    “However, as the IoU threshold increased to 0.9 and 0.95, YOLOv10 consistently dominated across all model sizes, achieving the highest number of best results independently of the number of parameters.”
    Quote in the paperSubstantial claim
  • Findingown data

    YOLOv10 offers the most balanced performance in terms of precision and F1-score.

    “Overall, the results confirm that YOLOv10 offers the most balanced performance in terms of precision and F1-score”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim. 5
  • May combine two claims. 2
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    The tests showed that sensor performance can be reduced by up to 40-50% under the strongest distortions.

    “The tests showed that sensor performance can be reduced by up to 40-50% under the strongest distortions [14].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [14] Michaelis, C., Mitzkus, B., Geirhos, R., Rusak, E., Bringmann, O., Ecker, S.A., Bethge, M., and Brendel, W. (2019). Benchmarking Robustness in Object Detection: Autonomous Driving When Winter is Coming. arXiv. source
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given

    Real-world contamination may exhibit more complex patterns than synthetic perturbations.

    “a limitation is that real-world contamination may exhibit more complex patterns”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductnone given

    For the evaluation, a selection of YOLO models was made to ensure a representative comparison across different network sizes. Within each category, models were selected to have comparable parameter counts, ensuring a fair comparison of architectural improvements across versions.

    “For the evaluation, a selection of YOLO models was made to ensure a representative comparison across different network sizes.Within each category, models were selected to have comparable parameter counts, ensuring a fair comparison of architectural improvements across versions.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Study design and conductreasoning

    Artificial distortions were preferred over real contaminations to ensure full control over intensity and location of sensor degradations, enabling reproducible and safety-compliant testing scenarios.

    “Artificial distortions were preferred over real contaminations to ensure full control over intensity and location of sensor degradations, enabling reproducible and safety-compliant testing scenarios.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    All images were manually annotated following the COCO dataset class definitions, ensuring consistency with the object categories used during model training.

    “All images were manually annotated following the COCO dataset class definitions, ensuring consistency with the object categories used during model training.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Study design and conductnone given

    Synthetic perturbations enable controlled and reproducible testing.

    “While synthetic perturbations enable controlled and reproducible testing”
    Quote in the paperNot a substantial claim
6 of 6
  • The paper relies on this without support.

    The artificial distortions (RandomFog, Spatter, RandomSunFlare) adequately simulate real-world sensor degradations from water droplets, dirt, and sun glare.

    “To simulate typical sensor degradations encountered in real-world applications, each image was artificially distorted using the Albumentation (v2.0.8) [22] image augmentation library.”
  • The paper relies on this without support.

    The custom dataset (558 images from campus driving) is representative of real-world traffic scenarios for evaluating detection performance.

    “The footage captures various real-world traffic scenarios, including vehicles, pedestrians, and bicycles, providing a realistic environment for evaluating detection performance.”
  • The paper relies on this without support.

    The COCO-pretrained YOLO models are suitable for detecting objects in the custom dataset without additional training.

    “The YOLO object detection models implemented in the Ultralytics framework (v8.3.221),pre-trained on the COCO dataset, were tested in three scenarios, with three types of adversarial visual perturbations applied to the images.”
3 of 3

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • YOLOv10 does not consistently have the highest F1-score

    Minor

    The discussion claims YOLOv10 has the highest F1-score across all model sizes and perturbation types. In Table 7, the medium-model mud results at effect level 0.2 give YOLOv12 an F1-score of 0.6772, above YOLOv10's 0.6662.

1 of 1

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Authors
Csikor, D., Hollósi, J., & Szauter, F.
Affiliations
  • Vehicle Industry Research Center, Széchenyi István University, 1. Egyetem tér, 9026 Győr, Hungary
  • Széchenyi István University (HU)
Venue
SMTS 2025
Publisher
MDPI
Published
2025-10-28
Pages
15
OpenAlex
W4415646494
Cited by
0
References
13
FWCI
0.00
Type
conference paper
Language
en
Open access
Locations
DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
European Commission
Topics
  • Physical Sciences › Engineering › Automotive Engineering › Autonomous Vehicle Technology and Safety
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Advanced Vision and Imaging
  • Physical Sciences › Engineering › Civil and Structural Engineering › Transportation Systems and Logistics
Keywords
autonomous vehicles, sensor degradation, obstacle detection, detection performance, sensor reliability, road safety

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