基于空间域和频率域方法的烟雾检测

doi:10.3969/j.issn.1000-5641.2023.05.013

摘要/Abstract

摘要：

变电站等工业场景中, 基于监控视频的视觉烟雾检测已被作为一种新的环境辅控方式, 用于辅助或代替基于烟雾传感器的烟雾检测. 但是, 工业应用中要求视觉烟雾检测算法在保证误检率低的基础上, 要尽可能降低漏检率. 针对该问题, 基于空间域和频率域方法, 提出了一种新的烟雾检测算法, 分别在空间域和频率域进行烟雾检测: 在空间域上, 在提取烟雾运动特性的基础上, 设计了提取烟雾“蒙版特性”的方法, 以保证较低的漏检率; 在频率域上, 分别结合滤波模块和神经网络模块, 以进一步降低误检率. 最后通过融合后处理策略, 得到最终检测结果, 从而平衡漏检率和误检率. 在测试数据集上, 所提烟雾检测算法的误检率达到了0.053, 漏检率达到了0.113, 实现了误检率和漏检率的良好平衡. 所提检测方法适用于变电站等实际工业场景的烟雾检测.

关键词: 视觉烟雾检测, 空间域和频率域, 神经网络, 三维傅里叶变换

Abstract:

In industrial scenarios such as substations, video-based visual smoke detection has been adopted as a new environmental monitoring method to assist or replace smoke sensors. However, in industrial applications, visual smoke detection algorithms are required to maintain a low false detection rate while minimizing the missed detection rate. To address this, this study proposes a smoke detection algorithm based on spatial and frequency domain methods, which perform smoke detection in both domains. In the spatial domain, in addition to extracting smoke motion characteristics, this study designed a method for extracting smoke mask characteristics, which effectively ensures a low missed detection rate. In the frequency domain, this study combined filtering and neural network modules to further reduce the false detection rate. Finally, a fusion domain post-processing strategy was designed to obtain the final detection results. In experiments conducted on a test dataset, the smoke detection algorithm achieved a false detection rate of 0.053 and missed detection rate of 0.113, demonstrating a good balance between false alarms and missed detections, which is suitable for smoke detection in substation industrial scenes.

Key words: visual smoke detection, spatial and frequency domains, neural network, three-dimensional Fourier transform

中图分类号:

TP391

盛连军, 汤致轩, 茅晓亮, 白帆, 黄定江. 基于空间域和频率域方法的烟雾检测[J]. 华东师范大学学报（自然科学版）, 2023, 2023(5): 147-163.

Lianjun SHENG, Zhixuan TANG, Xiaoliang MAO, Fan BAI, Dingjiang HUANG. Smoke detection based on spatial and frequency domain methods[J]. Journal of East China Normal University(Natural Science), 2023, 2023(5): 147-163.

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算法	误检率	漏检率
基线算法	0.776	0.013
基线算法 + 蒙版特性	0.671	0.025
基线算法 + 蒙版特性 + 频域滤波	0.066	0.088
基线算法 + 蒙版特性 + 频域滤波 + 三维神经网络	0.053	0.113

算法	误检率	漏检率
基于小波变换的烟雾检测算法^[4]	0.115	0.184
基于纹理分析的烟雾检测算法^[5]	0.092	0.106
基于改进YOLOv5的烟雾检测算法^[16]	0.079	0.173
本文算法	0.053	0.113

算法	单张图片平均推理时间/ms
算法	在GPU上	在CPU上	在NPU上
基于小波变换的烟雾检测算法^[4]	42	50	–
基于纹理分析的烟雾检测算法^[5]	37	42	–
基于改进YOLOv5的烟雾检测算法^[16]	55	170	68
本文算法	48	161	65

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