@article{MEA81722E, title = "A Study of Tram-Pedestrian Collision Prediction Method Using YOLOv5 and Motion Vector", journal = "KIPS Transactions on Software and Data Engineering", year = "2021", issn = "2287-5905", doi = "https://doi.org/10.3745/KTSDE.2021.10.12.561", author = "Young-Min Kim/Hyeon-Uk An/Hee-gyun Jeon/Jin-Pyeong Kim/Gyu-Jin Jang/Hyeon-Chyeol Hwang", keywords = "Tram, Dense Optical Flow, Estimation of Collision point, TTC(Time-To-Collision), YOLOv5", abstract = "In recent years, autonomous driving technologies have become a high-value-added technology that attracts attention in the fields of science and industry. For smooth Self-driving, it is necessary to accurately detect an object and estimate its movement speed in real time. CNN-based deep learning algorithms and conventional dense optical flows have a large consumption time, making it difficult to detect objects and estimate its movement speed in real time. In this paper, using a single camera image, fast object detection was performed using the YOLOv5 algorithm, a deep learning algorithm, and fast estimation of the speed of the object was performed by using a local dense optical flow modified from the existing dense optical flow based on the detected object. Based on this algorithm, we present a system that can predict the collision time and probability, and through this system, we intend to contribute to prevent tram accidents." }