An Integrated Approach for Multi-Object Detection and Tracking in Traffic Monitoring Using YOLOv9c and ByteTrack

Authors

Corressponding author's email:

dinhnt@huit.edu.vn

DOI:

https://doi.org/10.54644/jte.2026.2077

Keywords:

Object Detection, Object Tracking, YOLOv9c, ByteTrack, Traffic Monitoring

Abstract

This paper proposes an integrated method for object detection and tracking in congested traffic environments, based on a combination of the YOLOv9c object detection model and the ByteTrack multi-object tracking algorithm. In this proposed method, the YOLOv9c model is trained and fine-tuned to enhance the performance of vehicle detection in complex conditions. Simultaneously, ByteTrack algorithm links objects across extracted video frames by leveraging both high- and low-confidence bounding boxes. This approach reduces the identity loss and increases the stability of object tracking in traffic, especially in conditions with high object density and severe occlusion. To implement this method, the object detection model was trained and refined on the BDD100K dataset, combined with the Vietnam Traffic Dataset, with a focus on common vehicle classes, including bicycles, motorbikes, cars, buses, and trucks. Experimental results showed that the model achieved a Precision of 89.8% and a Recall of 72.7% in the daytime traffic congestion scenario, and a recall rate of 90.1% in nighttime conditions. For the multi-object tracking problem, the system achieved an IDF1 of 84.3%, demonstrating its ability to maintain stable object identification even in the presence of obstructions, and achieved an MOTA of 69.9% under favorable observation conditions. These results confirm that the proposed method is highly effective in detecting and tracking traffic objects and has potential applications in intelligent traffic monitoring systems and real-time video analysis.

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Author Biographies

Nguyen Thi Thanh Thuy, Ho Chi Minh City University of Industry and Trade, Vietnam

Nguyen Thi Thanh Thuy was born in 1981, graduated with a degree in Information Technology from the University of Science, Vietnam National University Ho Chi Minh City (VNUHCM-US) in 2003. Research fields: Data Mining, Machine Learning and Deep Learning.

Email: thuyntt@huit.edu.vn. ORCID:  https://orcid.org/0000-0002-1764-3948

Ho Van Luc, Ho Chi Minh City University of Industry and Trade, Vietnam

Ho Van Luc was born in 1984, graduated in The University of Science, Viet Nam National University Ho Chi Minh City (VNUHCM-US or HCMUS) in 2010. Research interests: Software Engineering, Information System.

Email: hovanluc@gmail.com. ORCID:  https://orcid.org/0009-0000-6096-888X

Nguyen Thi Thai An, Ho Chi Minh City University of Industry and Trade, Vietnam

Nguyen Thi Thai An was born in 1983, graduated in Vietnam National University HCM - University of Information Technology (VNUHCM - UIT) in 2005. Research interests: Machine Learning, Deep Learning.

Email: thaiantl@gmail.com. ORCID:  https://orcid.org/0009-0000-6461-4261

Phung The Bao, Ho Chi Minh City University of Industry and Trade, Vietnam

Phung The Bao was born in 1985, received the Ph.D. degrees in Information Technology from Irkutsk National Research Technical University (IrNITU), Irkutsk City, Russia, in 2014. He is currently the lecturer of Faculty of Information Technology, Ho Chi Minh City University of Industry and Trade, Vietnam. His research interests include the Mathetical model, applications of artificial intelligence, deep learning, machine learning, data mining.

Email: baopt@huit.edu.vn. ORCID:  https://orcid.org/0009-0008-3138-7849

Nguyen Thi Dinh, Ho Chi Minh City University of Industry and Trade, Vietnam

Nguyen Thi Dinh was born in 1983, graduated in Pedagogy Informatics Ho Chi Minh City University of Education in 2006, and received a Master's degree in industry Data transmission and computer network at Ho Chi Minh City Institute of Post and Telecommunications Technology Ho Chi Minh City in 2011. In 2023, she received a PhD degree in Computer Science from the University of Science, Hue, Vietnam. Field research: image processing, image retrieval, and information system.

Email: dinhnt@huit.edu.vn. ORCID:  https://orcid.org/0000-0003-3428-3101

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Published

28-02-2026

How to Cite

[1]
Nguyen Thi Thanh Thuy, Ho Van Luc, Nguyen Thi Thai An, Phung The Bao, and Nguyen Thi Dinh, “An Integrated Approach for Multi-Object Detection and Tracking in Traffic Monitoring Using YOLOv9c and ByteTrack”, JTE, vol. 21, no. 01, pp. 81–90, Feb. 2026.

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