Abstract:Electromyography (EMG) signal is an myoelectric signal in the muscle layer. It occurs caused by contraction and relaxation muscle activity. This article provide numerical study of the classifying the electromyography signal for wrist movement combined with open and grasping finger flexor. The EMG signal has recorded using a device called electromyography. It has acquired by attaching an surface electrode in the skin then the electrode was capturing the raw signal. The volunteer involved were six where each vol… Show more
“…Next, the feature data with unknown scores are modeled using each of the 3 Gaussian mixture models, and finally, maximum likelihood estimation is performed to obtain the evaluation results. We evaluated the performance of the new classifier by comparing it with three basic classifiers, including the traditional Gaussian mixture model [26], Naïve Bayes [27], and AdaBoost.M1 classifier [15].…”
Background: Functional movement screening (FMS) allows for the rapid assessment of an individual’s physical activity level and the timely detection of sports injury risk. However, traditional functional movement screening often requires on-site assessment by experts, which is time-consuming and prone to subjective bias. Therefore, the study of automated functional movement screening has become increasingly important. Methods: In this study, we propose an automated assessment method for FMS based on an improved Gaussian mixture model (GMM). First, the oversampling of minority samples is conducted, the movement features are manually extracted from the FMS dataset collected with two Azure Kinect depth sensors; then, we train the Gaussian mixture model with different scores (1 point, 2 points, 3 points) of feature data separately; finally, we conducted FMS assessment by using a maximum likelihood estimation. Results: The improved GMM has a higher scoring accuracy (improved GMM: 0.8) compared to other models (traditional GMM = 0.38, AdaBoost.M1 = 0.7, Naïve Bayes = 0.75), and the scoring results of improved GMM have a high level of agreement with the expert scoring (kappa = 0.67). Conclusions: The results show that the proposed method based on the improved Gaussian mixture model can effectively perform the FMS assessment task, and it is potentially feasible to use depth cameras for FMS assessment.
“…Next, the feature data with unknown scores are modeled using each of the 3 Gaussian mixture models, and finally, maximum likelihood estimation is performed to obtain the evaluation results. We evaluated the performance of the new classifier by comparing it with three basic classifiers, including the traditional Gaussian mixture model [26], Naïve Bayes [27], and AdaBoost.M1 classifier [15].…”
Background: Functional movement screening (FMS) allows for the rapid assessment of an individual’s physical activity level and the timely detection of sports injury risk. However, traditional functional movement screening often requires on-site assessment by experts, which is time-consuming and prone to subjective bias. Therefore, the study of automated functional movement screening has become increasingly important. Methods: In this study, we propose an automated assessment method for FMS based on an improved Gaussian mixture model (GMM). First, the oversampling of minority samples is conducted, the movement features are manually extracted from the FMS dataset collected with two Azure Kinect depth sensors; then, we train the Gaussian mixture model with different scores (1 point, 2 points, 3 points) of feature data separately; finally, we conducted FMS assessment by using a maximum likelihood estimation. Results: The improved GMM has a higher scoring accuracy (improved GMM: 0.8) compared to other models (traditional GMM = 0.38, AdaBoost.M1 = 0.7, Naïve Bayes = 0.75), and the scoring results of improved GMM have a high level of agreement with the expert scoring (kappa = 0.67). Conclusions: The results show that the proposed method based on the improved Gaussian mixture model can effectively perform the FMS assessment task, and it is potentially feasible to use depth cameras for FMS assessment.
“…sEMG is the technique that acquires complex signals from a group of muscles for individual action, and requires classification techniques for motor movements. For prosthesis, several techniques have been used such as Wigner-Ville distribution [2], SVM [3], Naïve Bayes Classifier [4], Higher-Order Statistics [5], Artificial Neural Network [6], etc. The Support Vector Machine (SVM) is a method for locating a hyperplane in an N-dimensional space that classifies data points explicitly.…”
Section: Introductionmentioning
confidence: 99%
“…The Nave Bayes classifier is another machine learning model that classifies signals based on probability. The classifier's core is built on the Bayes theorem [4]. In this paper, SVM has been employed on real-time sEMG signals.…”
Section: Introductionmentioning
confidence: 99%
“…The proposed framework employed Myo Armband to acquire sEMG data. SVM was employed as it is efficient as compared to classification methods such as LDA [14], Naïve Bayes classifier [4], [14] , random forest [14], bicoherence method [9]. In myoelectric control, mostly LDA has been used for real time application due to it simple structure and linearity property and hence with minimal delay time.…”
In this work we applied real-time classification of prosthetic fingers movements using surface electromyography (sEMG) data. We employed support vector machine (SVM) for classification of fingers movements. SVM has some benefits over other classification techniques e.g. 1) it avoids overfitting, 2) handles nonlinear data efficiently and 3) it is stable. SVM is employed on Raspberry pi which is a low-cost, credit-card sized computer with high processing power. Moreover, it supports Python which makes it easy to build projects and it has multiple interfaces available. In this paper, our aim is to perform classification of prosthetic hand relative to human fingers. To assess the performance of our framework we tested it on ten healthy subjects. Our framework was able to achieve mean classification accuracy of 78%.
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