| Autor: |
Ann H; Vibration Engineering Section, Faculty of Environment, Science, and Economics, University of Exeter, Exeter EX4 4QF, UK., Koo KY; Vibration Engineering Section, Faculty of Environment, Science, and Economics, University of Exeter, Exeter EX4 4QF, UK. |
| Jazyk: |
angličtina |
| Zdroj: |
Sensors (Basel, Switzerland) [Sensors (Basel)] 2023 Nov 10; Vol. 23 (22). Date of Electronic Publication: 2023 Nov 10. |
| DOI: |
10.3390/s23229095 |
| Abstrakt: |
The recent large-scale fire incidents on construction sites in South Korea have highlighted the need for computer vision technology to detect fire risks before an actual occurrence of fire. This study developed a proactive fire risk detection system by detecting the coexistence of an ignition source (sparks) and a combustible material (urethane foam or Styrofoam) using object detection on images from a surveillance camera. Statistical analysis was carried out on fire incidences on construction sites in South Korea to provide insight into the cause of the large-scale fire incidents. Labeling approaches were discussed to improve the performance of the object detectors for sparks and urethane foams. Detecting ignition sources and combustible materials at a distance was discussed in order to improve the performance for long-distance objects. Two candidate deep learning models, Yolov5 and EfficientDet, were compared in their performance. It was found that Yolov5 showed slightly higher mAP performances: Yolov5 models showed mAPs from 87% to 90% and EfficientDet models showed mAPs from 82% to 87%, depending on the complexity of the model. However, Yolov5 showed distinctive advantages over EfficientDet in terms of easiness and speed of learning. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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