Siti Nurul Aqmariah Mohd Kanafiah
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Siti Nurul Aqmariah Mohd Kanafiah
Official Name
Siti Nurul Aqmariah, Mohd Kanafiah
Alternative Name
Kanafiah, S. N.Aqmariah
Kanafiah, S. N.A.M.
Kanafiah, Siti Nurul Aqmariah Mohd
Aqmariah Kanafiah, S. N.
Kanafiah, S. N. A. M
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Scopus Author ID
55987982900
Researcher ID
HTR-1815-2023

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Development of life cycle classification system for Plasmodium knowlesi malaria species using deep learning

2023 , Muhd Syamir Azhar , Mohd Yusoff Mashor , Siti Nurul Aqmariah Mohd Kanafiah , Zeehaida Mohamed

In this paper, the performance of deep learning model for GoogleNet and AlexNet are analysed to classify plasmodium knowlesi life cycle stages. Plasmodium knowlesi images are taken from department of microbiology and parasitology in Hospital Universiti Sains Malaysia (HUSM) in this research work. The data images are enhanced using contrast stretching method. The enhanced image undergoes process of segmentation to extract parasite inside the effected red blood cells. The segmented images go through bounding box process according to their size input image for both deep learning models. There are 5940 data which it represents for four classes: artifact, trophozoite, schizont and gametocyte stage. These datasets are trained using GoogleNet and AlexNet to classify the life cycle stages of plasmodium knowlesi. The analysed performance of both models includes training, validation, and testing process. According to the result, both model able to reach 100% for training accuracy. For validation accuracy, AlexNet has higher accuracy with 93.4% compared to GoogleNet with 92.2%. For testing accuracy, Google has higher accuracy with 91.1% where AlexNet with 89.1%.

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Feature Targeted Image Enhancement for Acute Myeloid Leukemia

2023 , Rabi'Atul' Adawiyah Abdul Rahman , Mohd Yusoff Mashor , Rafikha Aliana A Raof , Rosline Hassan , Siti Nurul Aqmariah Mohd Kanafiah , Nazahah Mustafa , Khairul Shakir Ab Rahman , Razan Hayati Zulkeflee

Image enhancement is one of the pre-processing steps in various computer vision applications. The current image enhancement algorithm typically applies uniform enhancements across the entire image where this approach often falls short of accurately highlighting or enhancing the specific features due to the influence of the background color. Therefore, this paper proposes a feature-targeted image enhancement technique. Feature-targeted image enhancement (FTIE) algorithm is the improvement over the conventional technique. This method will only enhance the targeted feature instead of the entire image. Therefore, the targeted feature will be enhanced accurately without the influence of the background image. The FTIE method was done by extracting the target feature from the original images and then applying the enhancement method to that region only. Based on the 80 acute myeloid leukemia images, the proposed method showed a promising result, where the comparative analysis shows that the image produced from the proposed method surpasses other conventional methods in terms of structural similarity index (0.995), universal image quality index (0.996), peak signal-to-noise ratio (30.803), mean absolute error (0.002), correlation coefficient (0.997) and contrast enhancement-based image quality (1.743) values.

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Intelligent Classification Procedure for Plasmodium Knowlesi Malaria Species

2022-01-01 , Siti Nurul Aqmariah Mohd Kanafiah , Mohd Yusoff Mashor , Mohamed Z. , Jusman Y. , Hasimah Ali , Nordiana Shariffudin , Siti Marhainis Othman

Plasmodium knowlesi (PK) is the fifth most prevalent malarial parasite species that causes serious health problems. Generally, PK present in a thin blood smear is observed using a microscope to differentiate between trophozoites (PKT), schizonts (PKS), gametocytes (PKG), and white blood cells (WBCs). This process is time-consuming and strenuous for the human eye. This study developed an intelligent classification procedure for PK using image processing and classification methods. The processes involved starting from image acquisition, and contrast enhancement based on Combination Local and Global Statistical Data (CLGSD), and local contrast stretching (LCS). Subsequently, a segmentation procedure was developed to segment the malaria images into two regions, namely malarial parasites and background regions. The proposed 16 feature sets were extracted, which consisted of the size of the object, size ratio of the object per infected RBC, and seven moments for each object shape based on size and perimeter. Finally, to validate the procedure performance, the proposed procedure was tested using 800 malarial parasites and WBC images. The results showed that the proposed procedure can classify three stages of PK, namely PKT, PKS, and PKG, as well as WBCs with an accuracy of 99.56% for training and 98.84% for validation, using a multi-layer perceptron (MLP) trained using the Levernberg-Marquardt (LM) algorithm.

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An Intelligent Classification System for Trophozoite Stages in Malaria Species

2022-01-01 , Siti Nurul Aqmariah Mohd Kanafiah , Mohd Yusoff Mashor , Mohamed Z. , Way Y.C. , Shazmin Aniza Abdul Shukor , Jusman Y.

Malaria is categorised as a dangerous disease that can cause fatal in many countries. Therefore, early detection of malaria is essential to get rapid treatment. The malaria detection process is usually carried out with a 100x magnificat i on of t hi n bl ood smear usi ng mi croscope observat i on. However, t he microbiologist required a long time to identify malaria types before applying any proper treatment to the patient. It also has difficulty to differentiate the species in trophozoite stages because of similar characteristics between species. To overcome these problems, a computer-aided diagnosis system is proposed to classify trophozoite stages of Plasmodium Knowlesi (PK), Plasmodium Falciparum (PF) and Plasmodium Vivax (PV) as early species identification. The process begins with image acquisition, image processing and classification. The image processing involved contrast enhancement using histogram equalisation (HE), segmentation procedure using a combination of hue, saturation and value (HSV) color model, Otsu method and range of each red, green and blue (RGB) color selections, and feature extraction. The features consist of the size of infected red blood cell (RBC), brown pigment in the parasite, and texture using Gray Level Co-occurrence Matrix (GLCM) parts. Finally, the classification method using Multilayer Perceptron (MLP) trained by Bayesian Rules (BR) show the highest accuracy of 98.95%, rather than Levenberg Marquardt (LM) and Conjugate Gradient Backpropagation (CGP) training algorithms.

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