Experimental Study of HSV Threshold Method and U-Net Neural Net-work in Fire Recognition Task
https://doi.org/10.26907/1562-5419-2025-28-4-829-951
Abstract
A comparative analysis of image segmentation methods for fire detection was conducted using thresholding in the HSV color space and the U-Net neural network. The study aimed to evaluate the efficiency of these approaches in terms of execution time and fire detection accuracy based on RMSE, IoU, Dice, and MAPE metrics. Experiments were performed on four different fire images with manually prepared ground truth fire masks. The results showed that the HSV method offers high processing speed (0.0010–0.0020 s) but tends to detect not only fire but also smoke, reducing its accuracy (IoU 0.0863–0.3357, Dice 0.1588–0.5026). The U-Net neural network demonstrates higher fire segmentation accuracy (IoU up to 0.6015, Dice up to 0.7512) due to selective flame detection but requires significantly more time (1.2477–1.3733 s) and may underestimate the total fire area (MAPE up to 78.5840%). Visual assessment confirmed differences in methods' behavior: HSV captures smoke as part of the target area, while U-Net focuses exclusively on fire. The choice between methods depends on task priorities: speed or accuracy. Future research directions were proposed, including U-Net optimization and the development of hybrid approaches.
About the Authors
Maksim Vladimirovich Bobyr
Southwest State University
Russian Federation
Russian Federation
Natalya Anatolyevna Milostnaya
Southwest State University
Russian Federation
Russian Federation
Bogdan Andreevich Bondarenko
South-West State University
Russian Federation
Russian Federation
Maksim Maksimovich Bobyr
Southwest State University
Russian Federation
Russian Federation
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Review
For citations:
Bobyr M.V., Milostnaya N.A., Bondarenko B.A., Bobyr M.M. Experimental Study of HSV Threshold Method and U-Net Neural Net-work in Fire Recognition Task. Russian Digital Libraries Journal. 2025;28(4):829-951. (In Russ.) https://doi.org/10.26907/1562-5419-2025-28-4-829-951
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