基于气压肌动图和改进神经模糊推理系统的手势识别研究

汪雷; 黄剑; 段涛; 伍冬睿; 熊蔡华; 崔雨琦

doi:10.16383/j.aas.c200901

基于气压肌动图和改进神经模糊推理系统的手势识别研究

doi: 10.16383/j.aas.c200901

汪雷^1,,
黄剑^1,,
段涛^1,,
伍冬睿^1,,
熊蔡华^2,,
崔雨琦^1,

1.
华中科技大学人工智能与自动化学院图像信息处理与智能控制教育部重点实验室武汉 430074
2.
华中科技大学机械科学与工程学院数字制造装备与技术国家重点实验室武汉 430074

基金项目: 国家自然科学基金联合基金重点支持项目(U19132207), 湖北省技术创新专项(2019AEA171), 科技部政府间国际科技创新合作重点专项(2017YFE0128300)资助

详细信息

作者简介:
汪雷：华中科技大学人工智能与自动化学院硕士研究生. 2019年获得华中科技大学学士学位. 主要研究方向为机器学习, 手势识别. E-mail: wml0531@hust.edu.cn

黄剑：华中科技大学人工智能与自动化学院教授. 2005年获得华中科技大学博士学位. 主要研究方向为康复机器人, 机器人装配, 网络控制系统和生物信息学. 本文通信作者. E-mail: huang_jan@mail.hust.edu.cn

段涛：2020年获得华中科技大学硕士学位. 主要研究方向为智能机器人, 模式识别. E-mail: tao_duan@hust.edu.cn

伍冬睿：华中科技大学人工智能与自动化学院教授. 主要研究方向为机器学习, 脑机接口, 计算智能和情感计算. E-mail: drwu@hust.edu.cn

熊蔡华：华中科技大学机械科学与工程学院数字制造装备与技术国家重点实验室教授. 1998年获得华中理工大学(现华中科技大学)机械电子工程专业博士学位. 主要研究方向为机器人学, 生机电一体化和康复工程装备. E-mail: chxiong@hust.edu.cn

崔雨琦：华中科技大学人工智能与自动化学院博士研究生. 2017年获得华中科技大学电子信息工程学士学位. 主要研究方向为模糊系统, 脑机接口和可穿戴设备. E-mail: yqcui@hust.edu.cn

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出版历程
- 收稿日期: 2020-10-27
- 网络出版日期: 2021-05-22
- 刊出日期: 2022-05-13

Research on Gesture Recognition Based on Pressure-based Mechanomyogram and Improved Neural Fuzzy Inference System

1.
Ministry of Education Key Laboratory on Image Information Processing and Intelligent Control, School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan 430074
2.
State Key Laboratory of Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074

Funds: Supported by National Natural Science Foundation of China (61873321, U1913207), Technology Innovation Project of Hubei Province of China (2019AEA171), and International Science and Technology Cooperation Program of China (2017YFE0128300)

More Information

Author Bio:
WANG Lei　Master student at the School of Artificial Intelligence and Automation, Huazhong University of Science and Technology. He received his bachelor degree from Huazhong University of Science and Technology in 2019. His research interest covers machine learning and gesture recognition

HUANG Jian　Professor at the School of Artificial Intelligence and Automation, Huazhong University of Science and Technology. He received his Ph.D. degree from Huazhong University of Science and Technology in 2005. His research interest covers rehabilitation robot, robotic assembly, networked control systems, and bioinformatics. Corresponding author of this paper

DUAN Tao　He received his master degree from Huazhong University of Science and Technology in 2020. His research interest covers intelligent robot and pattern recognition

WU Dong-Rui　Professor at the School of Artificial Intelligence and Automation, Huazhong University of Science and Technology. His research interest covers machine learning, brain-computer interfaces, computational intelligence, and affective computing

XIONG Cai-Hua　Professor at the State Key Laboratory of Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology. He received his Ph.D. degree in mechatronics from Huazhong University of Science and Technology in 1998. His research interest covers robotics, biomechatronics, and rehabilitation engineering equipment

CUI Yu-Qi　Ph.D. candidate at the School of Artificial Intelligence and Automation, Huazhong University of Science and Technology. He received his bachelor degree in electronic information engineering from Huazhong University of Science and Technology in 2017. His research interest covers fuzzy systems, brain-computer interfaces, and wearable devices

摘要

摘要: 手势识别是人机交互领域的重要研究内容, 为截肢患者控制智能假肢手提供基础. 当前主流方法之一是利用表面肌电图(Electromyogram, EMG)识别手部运动意图, 但肌电信号存在信号弱和易受噪声、汗液、疲劳影响等缺点. 同时肌电图在识别准确率方面, 尤其是截肢患者手势识别方面仍然具有较大的提升空间. 针对这些问题, 设计了基于气压肌动图(Pressure-based mechanomyogram, pMMG)的穿戴式信号采集装置, 为手势识别提供了优质的信号源. 结合深度神经网络中全连接层结构、典型抽样和标准正则化技术, 提出了一种改进多类神经模糊推理系统(Improved multicalss neural fuzzy inference system, IMNFIS), 与传统自适应神经模糊推理系统(Adaptive neural fuzzy inference system, ANFIS)相比, 泛化能力得到显著提升. 招募了7名健康受试者和1名截肢受试者, 并用8种算法开展离线实验. 所提方法在残疾人手势识别实验中取得了97.25%的最高平均准确率, 在健康人手势识别实验中取得了98.18%的最高平均准确率. 与近年公开报道的多种手势识别研究相比, 所提方法的综合性能更优.
- 手势识别 /
- 肌动图 /
- 神经模糊推理系统 /
- 自适应学习算法
Abstract: Gesture recognition, which provides a foundation for amputees to control smart prosthetic hands, is an important research content in the field of human-robot interaction. One of the current mainstream methods is using surface electromyogram (EMG) to identify the intention of hand motion, while EMG signals are weak and show some shortages of being interfered easily by noise, sweat, fatigue, etc. At the same time, there is still large room for the improvement in the recognition accuracy, especially in the gesture recognition of amputees by using EMG. To solve these problems, a wearable signal acquisition device based on pressure-based mechanomyogram (pMMG) is designed in this paper, which provides a signal source of high quality for gesture recognition. We proposed an improved multicalss neural fuzzy inference system (IMNFIS) by combining the full connection layer structure, typical sampling and uniformed regularization techniques in deep neural network, which significantly improved the generalization ability compared with the traditional adaptive neural fuzzy inference system (ANFIS). We recruited seven healthy subjects and an amputee subject, and then conducted an offline experiment in which eight algorithms are used. The proposed method got the highest average accuracy of 97.25% in the experiment of the disabled, and 98.18% in the experiment of the healthy. Compared with many reported gesture recognition researches in recent years, the method proposed in this paper achieves the better comprehensive performance.
- Gesture recognition /
- mechanomyogram (MMG) /
- neural fuzzy inference system /
- adaptive learning algorithm
注释:

1) 收稿日期 2020-10-27 录用日期 2021-03-02 Manuscript received October 27, 2020; accepted March 2, 2021 国家自然科学基金联合基金重点支持项目 (U1913207), 湖北省技术创新专项 (2019AEA171), 科技部政府间国际科技创新合作重点专项 (2017YFE0128300) 资助 Supported by National Natural Science Foundation of China (U1913207), Technology Innovation Project of Hubei Province(2019AEA171), and International Science and Technology Cooperation Program of China (2017YFE0128300) 本文责任编委郑伟诗 Recommended by Associate Editor ZHENG Wei-Shi 1. 华中科技大学人工智能与自动化学院图像信息处理与智能控制教育部重点实验室武汉 430074 2. 华中科技大学机械科学与

2) 工程学院数字制造装备与技术国家重点实验室武汉 430074 1. Ministry of Education Key Laboratory on Image Information Processing and Intelligent Control, School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan 430074 2. State Key Laboratory of Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074

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图 1 pMMG原理图

Fig. 1 The schematic diagram of pMMG

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图 2 手势识别装置及其佩戴位置

Fig. 2 The gesture recognition device and it＇s wearing position

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图 3 每一轮的手势数据采集过程

Fig. 3 Each round of gesture data acquisition process

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图 4 采集的原始手势数据流

Fig. 4 The collected raw gesture data stream

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图 5 手势数据处理过程

Fig. 5 Gesture data processing

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图 6 MC_ANFIS结构图

Fig. 6 Structure of MC_ANFIS

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图 7 本文研究的6种手势

Fig. 7 Six gestures studied in this paper

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图 8 MC_TS_UR融合算法在每名受试者数据集上的混淆矩阵

Fig. 8 The CM of the MC_TS_UR fusion algorithm applied to the datasets of every subject

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图 9 4种基于MC_ANFIS的算法在训练过程中的分类误差随时间变化曲线

Fig. 9 The classification error changes curve of four MC_ANFIS based algorithms with time during the training process

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表 1 参与手势识别实验的受试者信息

Table 1 Information of the subjects participating in the gesture recognition experiment

受试者	性别	年龄	身高 (cm)	体重 (kg)	腕围 (cm)	健康状况
Subject-1	男	25	180.4	72.4	18.8	健康
Subject-2	男	24	169.5	58.5	16.5	健康
Subject-3	男	56	164.6	61.2	15.8	手部截肢
Subject-4	男	25	172.3	62.8	17.9	健康
Subject-5	男	22	177.5	57.0	16.8	健康
Subject-6	男	26	166.6	65.7	18.4	健康
Subject-7	男	23	170.1	73.3	19.1	健康
Subject-8	男	25	175.5	66.9	17.1	健康

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表 2 6种手腕手势对应的肌肉信息

Table 2 Muscles information of the corresponding six gestures

手势	肌肉	作用
屈腕	尺侧腕屈肌	手腕屈曲和尺侧偏移
握拳	指浅屈肌	手指弯曲
尺侧倾	桡侧腕屈肌	手腕弯曲和径向偏移
伸腕	尺侧腕伸肌	手腕伸展和尺侧偏移
伸掌	指伸肌	手指伸展
桡侧倾	桡侧腕伸肌	手腕伸展和径向偏移

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表 3 8种算法在健康人数据集上的离线实验结果

Table 3 The offline experiment results of eight algorithms on datasets of the normal

指标	SVM	GBDT	LDA	TSK_GD_LSE	MC	MC_TS	MC_UR	MC_TS_UR
${\rm{RER}}$	6.07%	7.82%	5.15%	5.26%	3.16%	2.52%	2.30%	1.82%
${\rm{BER}}$	6.18%	8.74%	5.21%	5.35%	2.83%	2.41%	2.33%	1.77%
$\kappa$	0.9258	0.9018	0.9375	0.9358	0.9660	0.9711	0.9720	0.9787
$T_t$	224.6	4.4	0.6	1121.9	796.1	886.5	734.7	310.2

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表 4 8种算法在残疾人数据集上的离线实验结果

Table 4 The offline experiment results of eight algorithms on datasets of the disabled

指标	SVM	GBDT	LDA	TSK_GD_LSE	MC	MC_TS	MC_UR	MC_TS_UR
${\rm{RER}}$	5.94%	8.13%	4.46%	5.77%	4.64%	3.83%	3.77%	2.75%
${\rm{BER}}$	6.10%	8.27%	4.48%	6.11%	4.72%	3.98%	3.65%	2.73%
$\kappa$	0.9268	0.9008	0.9462	0.9267	0.9434	0.9522	0.9562	0.9672
$T_t$	173.0	5.3	0.7	1006.5	766.8	942.9	768.6	313.1

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表 5 与近期同类研究工作文献的比较

Table 5 Comparison with similar research work literature

文献	传感器	实验对象	是否为公共数据集	分类算法	手势类别数	识别准确率
[25]	6 通道 pMMG	6 名健康人	否	Fuzzy logic	6	95.30%
[26]	8 通道 FMG	10 名健康人	否	SVM	6	93.00%
[27]	2 通道 sEMG	7 名健康人	否	SVM	4	95.00%
[28]	4 通道 sEMG + 1 通道 IMU	10 名健康人	否	LDA	8	92.60%
[29]	8 通道 sEMG	21 名健康人	否	LDA	6	94.70%
[30]	8 通道 sEMG	8 名健康人	否	Hidden Markov model	6	94.20%
Proposed	6 通道 pMMG + 1 通道 IMU	7 名健康人	否	MC_TS_UR	6	98.18%
[31]	8 通道 sEMG	4 名残疾人	否	LDA	7	92.00%
[32]	7 通道 sEMG	3 名残疾人	否	SVM	5	94.02%
Proposed	6 通道 pMMG + 1 通道 IMU	1 名残疾人	否	MC_TS_UR	6	97.25%

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