Cited by 28Autonomous Vehicle Technology and SafetyAdvanced Neural Network ApplicationsRobotics and Sensor-Based Localization

Transformer-based sensor fusion for autonomous vehicles: A comprehensive review

Open access
Abdulmaksoud, Ahmed, Ahmed, Ryan·2025·IEEE Access

Abstract

Sensor fusion is vital for many critical applications, including robotics, autonomous driving, aerospace, and beyond. Integrating data streams from different sensors enables us to overcome the intrinsic limitations of each sensor, providing more reliable measurements and reducing uncertainty. Moreover, deep learning-based sensor fusion unlocked the possibility of multimodal learning, which utilizes different sensor modalities to boost object detection. Yet, adverse weather conditions remain a significant challenge to the reliability of sensor fusion. However, introducing the Transformer deep learning model in sensor fusion presents a promising avenue for advancing its sensing capabilities, potentially overcoming that challenge. Transformer models proved powerful in modeling vision, language, and numerous other domains. However, these models suffer from high latency and heavy computation requirements. This paper aims to provide: 1) an extensive overview of sensor fusion and transformer models; 2) an in-depth survey of the state-of-the-art (SoTA) methods for Transformer-based sensor fusion, focusing on camera-LiDAR and camera-radar methods; and 3) a quantitative analysis of the SoTA methods, uncovering research gaps and stimulating future work.

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Crossref · 10.1109/access.2025.3545032

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  • Relying on traditional single-modal approaches such as RGB images can encounter limitations in complex scenarios such as occlusion, lighting variations, and multi-object ambiguities.

    “Relying on traditional single-modal approaches (e.g., solely using RGB images) can encounter various limitations in complex scenarios, such as occlusion, lighting variations, and multi-object ambiguities [32,33,34].”

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Authors
Abdulmaksoud, A., & Ahmed, R.
Affiliations
McMaster University (CA)
Venue
IEEE Access
Published
2025
Volume
13
Pages
41822-41838
ISSN
2169-3536 (ISSN-L)
OpenAlex
W4407900187
Cited by
25
References
101
Citations by year
2026: 15 · 2025: 10
FWCI
6.03
Type
journal article
Language
en
Open access
Locations
  • IEEE Access (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Physical Sciences › Engineering › Automotive Engineering › Autonomous Vehicle Technology and Safety
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Advanced Neural Network Applications
  • Physical Sciences › Engineering › Aerospace Engineering › Robotics and Sensor-Based Localization
Keywords
sensor fusion, transformer models, autonomous vehicles, LiDAR-camera fusion, radar-camera fusion, multimodal learning, severe weather, object detection, computational efficiency

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