A Machine Learning-Based Multi-feature Extraction Method for Leather Defect Classification

Jawahar, Malathy; Anbarasi, L. Jani; Jasmine, S. Graceline; Narendra, Modigari; Venba, R.; Karthik, V

doi:10.1007/978-981-33-4305-4_15

Cited by 7 publications

(1 citation statement)

References 13 publications

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“…All four different feature vectors were given as input to the classifiers, namely Linear regression (LR) [ 37 ], Linear Discriminant Analysis (LDA) [ 4 , 27 ], K-Nearest Neighbour kNN [ 2 , 23 , 26 , 42 , 48 ]; ( https://www.kaggle.com/luisblanche/COVIDCT ) Classification and Regression Trees (CART) [ 20 , 33 ], Support Vector Machine (SVM) [ 5 , 38 ], Multi-layer perceptron Neural Network (NN) [ 14 , 21 ] and Random Forest (RF).…”

Section: Proposed Workmentioning

confidence: 99%

Computer-aided diagnosis of COVID-19 from chest X-ray images using histogram-oriented gradient features and Random Forest classifier

Jawahar

Prassanna

Ravi

et al. 2022

Multimed Tools Appl

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The decision-making process is very crucial in healthcare, which includes quick diagnostic methods to monitor and prevent the COVID-19 pandemic disease from spreading. Computed tomography (CT) is a diagnostic tool used by radiologists to treat COVID patients. COVID x-ray images have inherent texture variations and similarity to other diseases like pneumonia. Manually diagnosing COVID X-ray images is a tedious and challenging process. Extracting the discriminant features and fine-tuning the classifiers using low-resolution images with a limited COVID x-ray dataset is a major challenge in computer aided diagnosis. The present work addresses this issue by proposing and implementing Histogram Oriented Gradient (HOG) features trained with an optimized Random Forest (RF) classifier. The proposed HOG feature extraction method is evaluated with Gray-Level Co-Occurrence Matrix (GLCM) and Hu moments. Results confirm that HOG is found to reflect the local description of edges effectively and provide excellent structural features to discriminate COVID and non-COVID when compared to the other feature extraction techniques. The performance of the RF is compared with other classifiers such as Linear Regression (LR), Linear Discriminant Analysis (LDA), K-nearest neighbor (kNN), Classification and Regression Trees (CART), Random Forest (RF), Support Vector Machine (SVM), and Multi-layer perceptron neural network (MLP). Experimental results show that the highest classification accuracy (99. 73%) is achieved using HOG trained by using the Random Forest (RF) classifier. The proposed work has provided promising results to assist radiologists/physicians in automatic COVID diagnosis using X-ray images.

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