W.N Wan Zakaria

W.N Wan Zakaria
Universiti Tun Hussein Onn Malaysia | uthm · Department of Mechatronics and Robotics Engineering

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66
Publications
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330
Citations

Publications

Publications (66)
Article
White Blood Cells (WBCs) analysis is an important procedure to detect diseases is that closely related to human immunity system. Manual WBCs analysis is laborious and hence computer aided system (CAD) is a better option to alleviate the shortcoming. Since conventional segmentation-classification approach is tedious to configure, a Convolutional Neu...
Chapter
Ischemic stroke is among the most severe strokes and is triggered by a blockage in the blood vessel of the brain, which then inhibits blood from circulating into the region of the brain tissue. Generally, such an incidence is very important to overcome because nonenhanced computed tomography (CT) has several diagnostic limitations primarily in the...
Article
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Natural rubber is widely used in daily human life because of its excellent properties. At present, manual tapping is the main method to obtain natural rubber. Since the growth of the industrial sector is in line with the national economy, the demand for rubber resources has also increased. However, natural rubber production countries are now lackin...
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3D Bio-printer is said to have potential in the applications of medical studies and tissue engineering. A 3D Bio-printer could be used to print the artificial organs for organs transplant and cell tissue culture for generating new cell tissue. It could help in future medical and biological research. This paper presents the development process, i.e....
Article
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p class="IJASEITAbtract">Analysis on the retina blood vessels from fundus images have been widely used in the medical community to detect the disorder condition in the blood vessels. An automated tracing of retina blood vessel can help to provide valuable computer-assisted diagnosis for the ophthalmic disorders. Thus, it helps to reduce the time fo...
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p>The rapid growth of technology makes it possible to implement in immediate diagnosis for patients using image processing. By using morphological processing and adaptive thresholding method for segmentation of optic disc and optic cup, various sizes of retinal fundus images captured through fundus camera from online databases can be processed. Thi...
Article
Acute Lymphoblastic Leukemia (ALL) is a disease that is defined by uncontrollable growth of malignant and immature White Blood Cells (WBCs) which is called lymphoblast. Traditionally, lymphoblast analysis is done manually and highly dependent on the pathologist’s skill and experience which sometimes yields inaccurate result. For that reason, in thi...
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Full-text available
Acute Lymphoblastic Leukemia (ALL) is a disease that is defined by the uncontrollable growth of abnormal cell of lymphocyte, which is called lymphoblast. ALL patients cannot be left untreated as it can be fatal, and hence, early detection is very crucial for proper treatment suggestion. Conventionally, ALL analysis is manually done, which is time-c...
Article
Heart rate (HR) is one of important indicator for human physiological diagnosis, and camera can be used to detect it via photoplethysmograph (PPG) signal extraction. In doing so, number of sample images required to measure the HR signal, and quality of the images itself are important to yield an accurate reading. This paper tackles such an issue by...
Article
Magnetic particle imaging (MPI), a tomographic imaging method has been introduced for 3D imaging of human body with some potential applications such as magnetic hyperthermia and cancer imaging. It involves three important elements: tracer development using magnetic nanoparticles (MNPs), hardware realization (scanner using excitation and pickup coil...
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Posterior Fossa (PF) of head Computed Tomography (CT) image appears to be one of the intricate regions as it is located in the deepest part of the brain. This appears to cause significant degradation in CT image quality due to the effect of beam hardening and bone thickness. Whilst these issues may not fundamentally limit the scanning procedure, it...
Article
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Recycling is one of the important approaches to manage the waste effectively. Nowadays, many recycle bins were placed in school, university, shopping complex and housing area. Although most of them have good awareness to support these activities, yet there are still who abuse the usage of recycling bin by inserting prohibited items. To cater such a...
Article
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Acute lymphoblastic leukemia (ALL) is a disease that is detected by the presence of lymphoblast cell. Basically, lymphoblast cell is the abnormal cell of lymphocyte which is one of the White Blood Cell (WBC) types. Early prevention is suggested as this disease can be fatal and caused death. Traditionally, ALL is detected by using manual analysis wh...
Article
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Recently thermal imaging is exploited in applications such as motion and face detection. It has drawn attention many researchers to build such technology to improve lifestyle. This work proposed a technique to detect and identify a motion in sequence images for the application in security monitoring system or outdoor surveillance. Conventional syst...
Article
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Heart rate (HR) is one of the crucial indicators for human psychological. In recent works, it has been shown that a standard camera is able to detect illumination changes in the face skin due to the human cardiac pulse and this can be used to estimate the human HR. However most of previous systems work on near distance mode with a single face patch...
Article
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Recognizing human actions is a challenging task and actively research in computer vision community. The task of Human Action Recognition (HAR) has been widely used in various application such as human monitoring in a hospital or public spaces. Previous work in HAR identified the human actions by the amount of joint movement, 3D silhouettes, local o...
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Large deformations occur inside the breast whenever the biopsy needle is inserted during conventional ultrasound-guided breast biopsy procedure. Inconsistent force from manual handling of the ultrasound transducer makes maintaining the suspected lump in the ultrasound-imaging region challenging and further position the patient at discomfort. Hence,...
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The diagnosis of ischemic stroke in Posterior Fossa (PF) using conventional Computed Tomography (CT) is limited. Meanwhile, the identification of PF slices in CT is a very complicated task due to their varying structures for each slices. Traditionally, the identification of PF slices by the radiologist is based on the PF structure that present in t...
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Nowadays with the increasing amount of waste generated and limited landfill space for waste disposal, recycling is one of the important approaches to manage the waste effectively. The current manual recycling practice in which the user need to bring the waste in bulk to the recycling center might be hassle and hence become a discouraging factor for...
Article
Full-text available
Heart rate (HR) is one of vital biomedical signals for medical diagnosis. Previously, conventional camera is proven to be able to detect small changes in the skin due to the cardiac activity and can be used to measure the HR. However, most of the previous systems operate on near distance mode with a single face patch, thus the feasibility of the re...
Article
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Blood cells diagnosis is becoming essential to ensure a proper treatment can be proposed to a blood related disease patient. In current research trending, automated complete blood count analysis system is required for pathologists or researchers to count the blood cells from the blood smeared images. Hence, a portable mobile-based complete blood co...
Article
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The human locomotion is studied through gait analysis and is best observed instrumentally rather than observing visually. Thus, a portable insole pressure mapping system is built to assist in studying the human gait cycle. The pressure distribution is determined by instrumentally mapping the insole using force sensitive resistive sensors that are c...
Article
This project aims to reduce the energy consumption of air conditioner usage while maintaining occupant comfort. Cooling down the unoccupied space can be considered as waste of energy. Therefore, a human decoy system is proposed to track any human in the detection area. Image contains depth data in each pixel which can be used to detect the presence...
Article
White blood cells (WBCs) is closely related to human immunity system which is useful to fight viruses and bacteria. Cancer therapy effectiveness and some of the blood-related diseases can be determined from the count of cell region. Traditionally, WBC count is done manually which yields inaccurate results as the blood sample increases. Moreover, ev...
Conference Paper
Full-text available
This paper focuses on the development of a wearable sensor system to identify the different types of badminton grip that is used by a player during training. Badminton movements and strokes are fast and dynamic, where most of the involved movement are difficult to identify with the naked eye. Also, the usage of high processing optometric motion cap...
Conference Paper
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In white blood cell (WBC) diagnosis, the most crucial measurement parameter is the WBC counting. Such information is widely used to evaluate the effectiveness of cancer therapy and to diagnose several hidden infection within human body. The current practice of manual WBC counting is laborious and a very subjective assessment which leads to the inve...
Conference Paper
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Quadriplegia or tetraplegia patients have restricted four limbs as well as torso movement caused by severe spinal cord injury. Undoubtedly, these patients face difficulties when operating their powered electric wheelchair since they are unable to control the wheelchair by means of a standard joystick. Due to total loss of both sensory and motor fun...
Chapter
In this paper, the study is conducted as an effort to provide better visualization of ‎vein mechanism properties between healthy subjects and pregnant subjects. Here, ‎it is proposed to evaluate the vessel condition for the pregnant subject ‎and comparison to the healthy subject is done. Pregnancy had been one ‎of the risk factor that contributes t...
Chapter
Socially acceptable wheelchairs require information about human location and pose to generate a motion that is safe and comfortable to the people around. A WFoV Kinect camera is one of the prominent sensors to obtain such information from a wide coverage of distant targets. However, the task is challenging since the expanded RGB and depth images su...
Chapter
This paper presents the application of multirate output feedback with discrete time sliding mode control (SMC) for controlling the inverted pendulum system. The SMC are well known as completely insensitive to parameter variations and external disturbance. Normally, in order to design controller, the state feedback from the entire state variable is...
Article
The current day technology such as Flow Cytometry is only able to classify Dendritic Cells (DCs) once they are stained. Subsequently this procedure affects the cell viability for vaccine preparation in DCs immunotherapy. Visually, the DCs classification can be distinguished through their unique morphological feature called tentacles compared to oth...
Conference Paper
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Ergonomics has gained attention and take into consideration by the workers in the different fields of works recently. It has given a huge impact on the workers comfort which directly affects the work efficiency and productivity. The workers have claimed to suffer from the painful postures and injuries in their workplace. Musculoskeletal disorders (...
Conference Paper
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This paper proposes on the design of a walker for the prevention of falling among elderlies or patients during rehabilitation whenever they use a walker to assist them. Fall happens due to impaired balance or gait problem. The assistive device is designed by applying stability concept and an accelerometric fall detection system is included. The acc...
Article
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Immunotherapy is an entirely advanced class of cancer treatment which has been highly active and exciting field in clinical therapeutics. In numerous procedures, cancer immunotherapy demands a laborious practice to recognise and count Dendritic Cells (DCs) in the vaccine preparation. Conventionally, the laser-based technologythat provides a rapid a...
Conference Paper
The segmentation of Dendritic Cell (DC) from clumps of overlapping Peripheral Blood Mononuclear Cell (PBMC) in Phase Contrast Microscopy (PCM) images is notoriously challenging for an automated image analysis system. This problem is encountered due to the presence of shade off effect and halo region in the image. In order to improve the performance...
Conference Paper
The purpose of this paper is to provide an in-depth analysis of computer aided system for the early diagnosis of Deep Vein Thrombosis (DVT). Normally, patients are diagnosed with DVT through ultrasound examination after they have a serious complication. Thus, this study proposes a new approach to reduce the risk of recurrent DVT by tracking the ven...
Conference Paper
Identification of Dendritic Cell (DC) particularly in the cancer microenvironment is a unique disclosure since fighting tumor from the harnessing immune system has been a novel treatment under investigation. Nowadays, the staining procedure in sorting DC can affect their viability. In this paper, a computer aided system is proposed for automatic cl...
Article
This study proposes the usage of I2C, (Inter-Integrated Circuit) communication protocol for a modular general purpose controller board of mobile robots. For the past few years, a trend of purchasing an off the shelf controller board by designers that would later be altered to fit a robot specification and design are has been increasing. This modula...
Article
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In legged robot movement planning, the leg must be carefully design before trajectory analysis can be done. The objective of this paper is to develop a 3 DOF leg which will be used in quadruped robot. In addition, forward kinematic and comparison between real and simulation of the leg is presented. To achieve the objective, SolidWorks 2013 x64 Edit...
Chapter
This paper focuses on the development of a mobile measurement device to evaluate the bending and flexion of a Badminton player’s hand. Badminton can be classified as a fast racket based sports. A human eyes alone is not capable of capturing all these movements. The usage of high processing optometric system is expensive and large in size. Thus, thi...
Article
Full-text available
Transcranial Magnetic Stimulation (TMS) allows neuroscientist to study human brain behaviour and also become an important technique for changing the activity of brain neurons and the functions they sub serve. However, conventional manual procedure and robotized TMS are currently unable to precisely position the TMS coil because of unconstrained sub...
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This paper presents a model-based design technique to estimate the dynamic model of a nonlinear soft tissue phantom using MATLAB Simulink. The soft tissue model was developed using black-box modeling approach; simulations were performed based on acquired set of single input-output data and processed using MATLAB System Identification toolbox. Waven...
Article
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In this paper, a multirate output feedback (MROF) based on discrete time sliding mode control (DSMC) method is proposed. The MROF controller is designed to maintain the inverted pendulum at upright position by controlling the tracking position of a cart. This method is practical because it only used the output samples and the measurement of the sys...
Article
Full-text available
Users with severe motor ability are unable to control their wheelchair using standard joystick and hence an alternative brainwave control input is preferred. To use such device a concentration is necessary to ensure the user can move as intended. However the model of concentration that can be used for such purpose is still an open problem and need...
Article
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This paper presents the reliability and accuracy of the developed model of 5-axis Mitsubishi RV-2AJ robot arm. The CAD model of the robot was developed by using SolidWorks while the multi-body simulation environment was demonstrated by using SimMechanics toolbox in MATLAB. The forward and inverse kinematics simulation results proposed that the esta...
Article
This paper proposes a post-stroke rehabilitation system for hemiparetic-arm based on the application of tilt sensors. The study focuses on designing, developing and simulating the results. The result is documented for the purpose of post-processing and progressive status tracking. The subject needs to wear a set of sensors over the palm while perfo...
Article
Full-text available
This paper presents the inverse kinematics analysis of the five degree of freedom (DOF) Mitsubishi Melfa RV- 2AJ industrial robot. The proposed method is used specifically for controlling the z-axis Cartesian position. The kinematics problem is defined as the transformation from the robot's end-effector Cartesian space to the joint angle of the rob...
Article
Full-text available
Red blood cells (RBCs) counting in blood smear image is very important to diagnose blood related diseases such as malaria and anemia before a proper treatment can be proposed. The conventional practice for such procedure is executed manually by pathologist under light microscope. However, manual visual inspection is laborious task and depends on su...
Article
Full-text available
In this paper, the construction of phantom mimic vessel is presented to diagnose the Deep Vein Thrombosis (DVT). The diagnosis of DVT is commonly used by monitoring the blood velocity and present of thrombus in vessel from B- mode ultrasound image associated with the application of Doppler ultrasound. Since it is difficult to recognize the vessel c...
Article
This paper proposes the monitoring of a post-stroke rehabilitation activities via Android smart phones. The study focuses on designing the hardware, developing the software and simulating the results in interactive manner. The result is documented for the purpose of post-processing and progressive status tracking. Furthermore, the interactive outpu...
Article
Full-text available
Red blood cell (RBC) diagnosis is very important process for early detection of blood related disease such as malaria and anemia before suitable follow up treatment can be proceed. Conventional method is conducted by pathologist by manually count and classifies the viewed cell under light microscope. Such process is tedious and required highly skil...
Article
This paper focuses on evaluating and testing the usage of Bluetooth communication in a mobile measuring device to evaluate the flexion and extension of an athlete's hand. This mobile measuring device is targeted for athlete that plays racket based sports, like Badminton which is a game that needs fast actions. For this sole reason human eyes are no...
Article
In blood tests analysis identification of Red Blood Cell (RBC) morphology and count the RBC number is crucial to diagnose any symptoms of blood related disease. In current practice, such procedure is executed manually by a pathologist under light microscope. As the samples increased, manual inspection become laborious to the pathologist and since v...
Chapter
In this paper, the clinical experiment study is presented to diagnose Deep Vein Thrombosis (DVT). The diagnosis of DVT is commonly conducted by monitoring the blood velocity and present of thrombus in vessel from B-mode ultrasound image associated with the Doppler ultrasound. Since it is difficult to recognize the vessel condition at the early stag...
Article
Full-text available
In vitro identification and counting of red blood cells (RBCs) is very important to diagnose blood related diseases such as malaria and anemia before a proper treatment can be proposed. The conventional practice for such procedure is executed manually by pathologist under light microscope. However, manual visual inspection is laborious task and dep...
Conference Paper
Full-text available
This paper presents the forward kinematics analysis for the Mitsubishi Melfa RV-2AJ industrial robot with a five degree of freedom (DOF) revolute joints. The kinematics problem is defined as the transformation from the joint space to the Cartesian space and vice versa. An analytical solution using Denavit-Hartenberg (D-H) representation to describe...
Article
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This paper proposes a new obstacle avoidance method using a single monocular vision camera as the only sensor which is called as Hybrid Architecture. This architecture integrates a high performance appearance-based obstacle detection method into an optical flow-based navigation system. The hybrid architecture was designed and implemented to run bot...
Article
Transcranial Magnetic Stimulation (TMS) is a powerful and non- invasive method with which to study human brain behaviour as well as providing treatment for neurological diseases and psychiatry illnesses. However, studies in this field face the common problem of positioning the magnetic coil with respect to relevant cortical areas. The purpose of th...
Article
To develop a force control scheme for a Transcranial Magnetic Stimulation (TMS) robotic system, contact between the robot and subject's head is a challenge and crucial issue. Although this is the one of fundamental interactions that occur in manipulation, most current industrial robot systems inadequately sense or use contact information and rely o...

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