Tien, Phuc Pham
Information Technology Department, FPT University, Can Tho 94000, Vietnam

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An Approach for Improving Accuracy and Optimizing Resource Usage for Violence Detection in Surveillance Cameras in IoT systems Vo, Hoang-Tu; Tien, Phuc Pham; Thien, Nhon Nguyen; Mui, Kheo Chau
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 12, No 4: December 2024
Publisher : IAES Indonesian Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52549/ijeei.v12i4.5787

Abstract

Smart farming that uses information and communication technology is developed as a critical technique to address the challenges related to agricultural production, environmental effects (climate change), food security, and supply chain. The recent statistics reveal that the world's population has been increased significantly, which is expected to reach 7.7 billion. It is essential to achieve a significant rise in food output to meet the requirement of such a massive growth of population. However, due to the natural conditions and a variety of plant illnesses, food productivity and farms are reduced. In order to diagnose food diseases in farming, new technologies like the Internet of Things and artificial intelligence are now essential. To this end, the research paper introduces a novel artificial intelligence model represented by a twelvelayer deep convolution neural network to identify and classify plant image diseases. 38 distinct types of plant leaf photos are used for training and testing the suggested model, which are obtained by adjusting different parameters such as (a) hyperparameters; (b) coevolutionary layers; (c) and pooling layers in number. The proposed model consists of an extractor and classifier of functions. The first section involves three phases, i.e., it consists of two convolution layers and a maximum pooling layer for each phase. The second section consists of three levels: flattening, hidden, and output layers. The proposed model is compared with LeNet, VGG16, AlexNet, and Inception v3, which are considered state-of-the-art pre-trained models. The results demonstrate that the accuracy of LeNet, VGG16, AlexNet, and Inception v3 is given as 89%, 93%, 96.11%, and 97.6%, respectively. The findings provided in this research show that the suggested model outperforms state-of-the-art models in terms of training speed and computing time. Also, the results show that the proposed model achieves a considerable improvement in terms of accuracy and the mean square error compared to the state-of-the-art methods. In particular, The outcomes demonstrate that the suggested model achieves a mean square error and prediction accuracy of 98.76% and 0.0580, respectively. The results also depict that the proposed model is more reliable, allows fast convergence time in obtaining the results, and requires only a small number of trained parameters to identify the plant diseases accurately.
Enhancing Confidence In Brain Tumor Classification Models With Grad-CAM And Grad-CAM++ Vo, Hoang-Tu Vo; Thien, Nhon Nguyen; Mui, Kheo Chau; Tien, Phuc Pham
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 12, No 4: December 2024
Publisher : IAES Indonesian Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52549/ijeei.v12i4.5977

Abstract

Brain tumors are a terrible and dangerous health problem, often posing a significant threat to individuals due to their high probability of death. Detecting these tumors at an early stage is crucial, as it not only increases the chances of successful treatment but also plays a pivotal role in reducing total healthcare costs. Early detection allows medical professionals to take action quickly, enabling a more targeted and effective treatment approach. Numerous studies are currently employing Machine Learning (ML) and Deep Learning (DL) to classify brain tumors, promising improved accuracy and efficiency in tumor identification for potential breakthroughs in medical diagnosis. However, a significant challenge lies in these models being "black box" as their complex inner workings are not easily understood by humans. Explainable Artificial Intelligence (XAI) refers to the capability of an artificial intelligence (AI) system to provide understandable and interpretable explanations for its decisions or predictions. In this study, we propose a classification model based on various network architectures, namely DenseNet201, DenseNet169, Xception, MobileNetV2 and ResNet50. We then used Grad-CAM and Grad-CAM++ to interpret the model's results, evaluating its ability to distinguish important features in Magnetic resonance imaging (MRI) images of brain tumors during the decision-making process. The integration of Grad-CAM and Grad-CAM++ enhances the interpretability of the brain tumor classification model, providing valuable evidence of its effectiveness by focusing on crucial features in MRI images of brain tumors during decision-making. Research results contribute to the development of systems that support early diagnosis of tumors. This contribution is pivotal as it not only enhances the model's transparency but also validates its effectiveness in accurately identifying brain tumors.
Using The Combined Model Between MobileNetV2 and EfficientNetB0 to Classify Brain Tumors Based on MRI Images Thien, Nhon Nguyen; Mui, Kheo Chau; Vo, Hoang-Tu; Tien, Phuc Pham; Le, Huan Lam
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 13, No 2: June 2025
Publisher : IAES Indonesian Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52549/ijeei.v13i2.6197

Abstract

Brain tumors are extremely dangerous to one's health. If unchecked cell proliferation is not identified and treated promptly, it can lead to mortality, raise intracranial pressure, and endanger lifespan. To remove the tumor and lengthen the patient's life, early illness identification and drug administration are essential. In this research paper, we aim to improve the effectiveness of magnetic resonance imaging (MRI) equipment to identify cancerous brain tumour cells. It helps experts identify diseases faster. We classify brain tumour cells based on an image set of 3264 images with effective classification models such as ResNet50, InceptionV3, VGG19, EfficientNetB7, DenseNet201, MobileNetV2, Xception, etc. Besides, we also proposed two combined models: pooling (Xception + ResNet50) and pooling (MobileNetV2 + EfficientNetB0) to evaluate the effectiveness and found that the pooling model (MobileNetV2 + EfficientNetB0) gives the highest result, with 100% for the training set, 98% for the valid set, and 78% for the test set. We continued to improve the model by randomly re-dividing the data set with a Train-Valid-Test ratio of 60:20:20 and obtained an increased F1-score of 97%. We continued to improve the model again using the data augmentation techniques to create a larger data set, and the results far exceeded expectations with an F1-score of almost 100% for all classes. Based on the results, we found that combining MobileNetV2 with EfficientNetB0 is suitable for detecting brain tumour cancer cells. Aids in the early detection of dangerous cancers before they spread and endanger human health.