基于状态识别的高炉料面视频关键帧提取方法

黄建才; 蒋朝辉; 桂卫华; 潘冬; 许川; 周科

doi:10.16383/j.aas.c220969

基于状态识别的高炉料面视频关键帧提取方法

doi: 10.16383/j.aas.c220969

黄建才^1,,
蒋朝辉^{1, 2,},
桂卫华^1,,
潘冬^1,,
许川^1,,
周科^1,

1.
中南大学自动化学院长沙 410000
2.
鹏城实验室深圳 518000

基金项目: 国家重大科研仪器研制项目(61927803), 国家自然科学基金基础科学中心项目(61988101), 湖南省科技创新计划(2021RC4054), 湖南省研究生科研创新项目(CX20210243), 中南大学中央高校基本科研业务费专项资金(2021zzts0184)资助

详细信息

作者简介:
黄建才：中南大学自动化学院博士研究生. 2018年获重庆大学学士学位. 主要研究方向为图像处理, 计算机视觉和复杂工业过程参数检测. E-mail: huangjiancai@csu.edu.cn

蒋朝辉：中南大学自动化学院教授. 2011年获中南大学博士学位. 主要研究方向为智能传感与检测技术, 图像处理与智能识别和人工智能与机器学习. 本文通信作者. E-mail: jzh0903@csu.edu.cn

桂卫华：中南大学自动化学院教授. 1981年获得中南矿冶学院硕士学位. 主要研究方向为复杂工业过程建模, 优化与控制应用和故障诊断与分布式鲁棒控制. E-mail: gwh@csu.edu.cn

潘冬：中南大学自动化学院讲师. 分别于2015年和2021年获中南大学学士学位和博士学位. 主要研究方向为红外热成像, 视觉检测, 图像处理和深度学习. E-mail: pandong@csu.edu.cn

许川：中南大学自动化学院博士研究生. 2021年获中南大学硕士学位. 主要研究方向为数据分析, 机器学习和复杂工业过程建模. E-mail: csuxuchuan@csu.edu.cn

周科：中南大学自动化学院博士研究生. 2018年获重庆大学学士学位. 主要研究方向为复杂工业过程的数据挖掘、建模与优化控制. E-mail: zhouke95@csu.edu.cn

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出版历程
- 收稿日期: 2022-12-12
- 录用日期: 2023-02-26
- 网络出版日期: 2023-08-22
- 刊出日期: 2023-11-22

Key Frame Extraction Method of Blast Furnace Burden Surface Video Based on State Recognition

HUANG Jian-Cai^1
,,
JIANG Zhao-Hui^{1, 2
,},
GUI Wei-Hua^1
,,
PAN Dong^1
,,
XU Chuan^1
,,
ZHOU Ke^1
,

1.
School of Automation, Central South University, Changsha 410000
2.
Peng Cheng Laboratory, Shenzhen 518000

Funds: Supported by the National Major Scientific Research Equipment of China (61927803), National Natural Science Foundation of China Basic Science Center Project (61988101), Science and Technology Innovation Program of Hunan Province (2021RC4054), Hunan Provincial Innovation Foundation for Postgraduate (CX20210243), and Fundamental Research Funds for the Central Universities of Central South University (2021zzts0184)

More Information

Author Bio:
HUANG Jian-Cai　Ph.D. candidate at the School of Automation, Central South University. He received his bachelor degree from Chongqing University in 2018. His research interest covers image processing, computer vision, and parameter detection of complex industrial processes

JIANG Zhao-Hui　Professor at the School of Automation, Central South University. He received his Ph.D. degree from Central South University in 2011. His research interest covers intelligent sensing and detection technology, image processing and intelligent recognition, artificial intelligence and machine learning. Corresponding author of this paper

GUI Wei-Hua　Professor at the School of Automation, Central South University. He received his master degree from Central South Institute of Mining and Metallurgy in 1981. His research interest covers complex industrial process modeling, optimization and control applications, fault diagnosis and distributed robust control

PAN Dong　Lecturer at the School of Automation, Central South University. He received his bachelor degree and Ph.D. degree from Central South University in 2015 and 2021, respectively. His research interest covers infrared thermography, vision-based measurement, image processing, and deep learning

XU Chuan　Ph.D. candidate at the School of Automation, Central South University. He received his master degree from Central South University in 2021. His research interest covers data analysis, machine learning, and complex industrial process modeling

ZHOU Ke　Ph.D. candidate at the School of Automation, Central South University. He received his bachelor degree from Chongqing University in 2018. His research interest covers data mining, modeling and optimal control of complex industrial processes

摘要

摘要: 高炉料面视频关键帧是视频中的中心气流稳定、清晰、无炉料及粉尘遮挡且特征明显的图像序列, 对于及时获取炉内运行状态、指导炉顶布料操作具有重要的意义. 然而, 由于高炉内部恶劣的冶炼环境及布料的周期性和间歇性等特征, 料面视频存在信息冗余、图像质量参差不齐、状态多变等问题, 无法直接用于分析处理. 为了从大量高炉冶炼过程料面视频中自动准确筛选清晰稳定的料面图像, 提出基于状态识别的高炉料面视频关键帧提取方法. 首先, 基于高温工业内窥镜采集高炉冶炼过程中的料面视频, 并清晰完整给出料面反应新现象和形貌变化情况; 然后, 提取能够表征料面运动状态的显著性区域的特征点密集程度和像素位移特征, 并提出基于局部密度极大值高斯混合模型(Local density maxima-based Gaussian mixture model, LDGMM)聚类的方法识别料面状态; 最后, 基于料面状态识别结果提取每个布料周期不同状态下的关键帧. 实验结果表明, 该方法能够准确识别料面状态并剔除料面视频冗余信息, 能提取出不同状态下的料面视频关键帧, 为优化炉顶布料操作提供指导.
- 高炉 /
- 料面现象 /
- 显著性区域 /
- 状态识别 /
- 关键帧提取
Abstract: The key frames of the blast furnace burden surface video are the clear image sequences with stable central airflow, no burden and dust occlusion, and obvious characteristics, which are of great significance for timely obtaining the running state of the blast furnace and guiding the charging operation. However, due to the harsh ironmaking environment inside the blast furnace, the periodic and intermittent characteristics of the burden distribution, the burden surface video has problems such as redundant information, uneven image quality and changeable state, which cannot be directly used for analysis and processing. To screen clear and stable burden surface images automatically and accurately from a large number of burden surface videos during the blast furnace ironmaking process, a key frame extraction method of blast furnace burden surface video based on state recognition is proposed. Firstly, the burden surface video in the blast furnace ironmaking process is collected based on the high-temperature industrial endoscope, and the new phenomenon and change of burden surface topography are given clearly and completely. Then, the feature point density and pixel displacement characteristics in the salient region that can characterize the burden surface motion state are extracted. Next, a method of local density maxima-based Gaussian mixture model (LDGMM) clustering is proposed to recognize the burden surface state. Finally, the key frames in different states of each burden distribution cycle are extracted based on the state recognition results of the burden surface. The experimental results show that this method can accurately recognize the burden surface state, eliminate the redundant information of the burden surface video, and extract the key frames of the burden surface video under different states, which provides guidance for optimizing the furnace top charging operation.
- Blast furnace /
- burden surface phenomenon /
- salient region /
- state recognition /
- key frame extraction

HTML全文

图 1 料面视频采集系统

Fig. 1 Burden surface video acquisition system

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图 2 设备安装图

Fig. 2 Equipment installation diagram

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图 3 一个布料周期内的料面反应现象

Fig. 3 Burden surface reaction phenomenon in a burden cycle

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图 4 一个布料周期内料面视频帧

Fig. 4 Burden surface video frames in a burden cycle

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图 5 料面显著性区域提取

Fig. 5 Salient region extraction of burden surface

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图 6 提取的特征点及其光流矢量

Fig. 6 Extracted feature points and their corresponding optical flow vectors

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图 7 特征点密集程度和平均光流矢量的概率密度分布图

Fig. 7 Probability density distribution map of feature point density and average optical flow vectors

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图 8 特征点平均光流矢量概率分布直方图

Fig. 8 Probability distribution histogram of average feature point optical flow vectors

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图 9 不同方法不同训练过程似然函数变化情况

Fig. 9 Change of likelihood function of different methods in multiple training processes

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图 10 料面视频差异度曲线

Fig. 10 Difference curve of burden surface video

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图 11 不同布料周期不同状态的识别结果

Fig. 11 Various state recognition results in different burden cycles

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图 12 相同料面图像不同方法的聚类结果

Fig. 12 Clustering results of different methods for the same burden surface image

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图 13 不同方法识别不同料面状态的对比结果

Fig. 13 Comparison results of different burden surface states identified by different methods

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图 14 不同方法识别的不同状态

Fig. 14 Different states identified by different methods

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图 15 所提方法的混淆矩阵

Fig. 15 Confusion matrix of the proposed method

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图 16 采用不同方法提取的同一布料周期的部分关键帧

Fig. 16 Extracted partial key frames of the same burden cycle using different methods

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图 17 提取的不同布料周期的关键帧

Fig. 17 Extracted key frames of different burden cycles

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图 18 不同形貌料面视频关键帧提取精度

Fig. 18 Extraction accuracy of video key frames with different shapes and surfaces

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表 1 不同方法的聚类效果比较

Table 1 Comparison of clustering performance of different methods

	指标
	DB	CH	SC	SP
LK光流	0.2603	474.41	0.9826	0.6013
特征点光流	0.2867	5392.80	0.9949	0.7129
GMM	0.1376	1347.30	0.9816	0.8018
本文方法	0.0010	7762.36	0.9989	0.9537

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表 2 不同方法的识别精度比较

Table 2 Accuracy comparison of recognition results of different methods

	指标
	ARI	NMI	E	P
DIFlow	0.4731	0.5105	1.0125	0.7666
SelFlow	0.4133	0.4276	1.0629	0.7344
本文方法	0.7669	0.7602	0.5212	0.9083

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表 3 不同方法提取的关键帧精度比较

Table 3 Accuracy comparison of key frames extracted by different methods

方法	关键帧	查全率	准确率	$ F1 $值
DSBD	679	60.3%	28.9%	0.3904
DeepReS	451	76.0%	54.8%	0.6366
DSN	394	85.2%	70.3%	0.7705
人工经验	325	—	—	—
本文方法	338	92.0%	88.5%	0.9020

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