Yazar "Osman, Onur" için Elektrik-Elektronik Mühendisliği Bölümü Makale Koleksiyonu listeleme
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Assessment of similarities between liver images to each other using scaling, rotation and translation geometrical operations
Tapkın Palabaş, Tuğba; Osman, Onur; Ergin, Tuncer; Teomete, Uygar (Istanbul Unıv., 2017)In this study, similarity rates of the liver images which are obtained from different peoples are determined using 3D geometric transformation methods. The similarity is evaluated based on the numerical comparisons and ... -
Automated segmentation of the injured kidney due to abdominal trauma
Tulum, Gökalp; Teomete, Uygar; Cüce, Ferhat; Ergin, Tuncer; Köksal, Murathan; Dandin, Özgür; Osman, Onur (Springer, 2020)The objective of this study is to propose and validate a computer-aided segmentation system which performs the automated segmentation of injured kidney in the presence of contusion, peri-, intra-, sub-capsular hematoma, ... -
Automated segmentation of the injured spleen
Dandin, Ozgür; Teomete, Uygar; Osman, Onur; Tulum, Gökalp; Ergin, Tuncer; Sabuncuoğlu, Mehmet Zafer (Springer, 2016)Purpose: To develop a novel automated method for segmentation of the injured spleen using morphological properties following abdominal trauma. Average attenuation of a normal spleen in computed tomography (CT) does not ... -
Automatic Detection of Pulmonary Embolism in CTA Images Using Machine Learning
Özkan, Haydar; Tulum, Gökalp; Osman, Onur; Şahin, Sinan (Kaunas Univ. Technology, 2017)In this study, a novel computer-aided detection (CAD) method is introduced to detect pulmonary embolism (PE) in computed tomography angiography (CTA) images. This method consists of lung vessel segmentation, PE candidate ... -
A CAD of fully automated colonic polyp detection for contrasted and non-contrasted CT scans
Tulum, Gökalp; Bolat, Bülent; Osman, Onur (Springer, 2017)Computer-aided detection (CAD) systems are developed to help radiologists detect colonic polyps over CT scans. It is possible to reduce the detection time and increase the detection accuracy rates by using CAD systems. In ... -
Colon segmentation and colonic polyp detection using cellular neural networks and three-dimensional template matching
Kılıç, Niyazi; Uçan, Osman Nuri; Osman, Onur (Wiley Blackwell, 2009)In this study, an automatic three-dimensional computer-aided detection system for colonic polyps was developed. Computer-aided detection for computed tomography colonography aims at facilitating the detection of colonic ... -
Computer-aided detection (CADx) for plastic deformation fractures in pediatric forearm
Zhou, Yuwei; Teomete, Uygar; Dandin, Özgür; Osman, Onur; Dandinoğlu, Taner; Bağcı, Ulaş; Zhao, Weizhao (Elsevier, 2016)Bowing fractures are incomplete fractures of tubular long bones, often observed in pediatric patients, where plain radiographic film is the non-invasive imaging modality of choice in routine radiological workflow. Due to ... -
Effect of brightness of visual stimuli on EEG signals
Eroğlu, Kübra; Kayıkçıoğlu, Temel; Osman, Onur (Elsevier, 2020)The aim of this study was to examine brightness effect, which is the perceptual property of visual stimuli, on brain responses obtained during visual processing of these stimuli. For this purpose, brain responses of the ... -
The effect of recording site on extracted features of motor unit action potential
Artuğ, N. Tuğrul; Göker, İmran; Bolat, Bülent; Osman, Onur; Kocasoy Orhan, Elif; Baslo, M. Barış (Elsevier, 2016)Motor unit action potential (MUAP), which consists of individual muscle fiber action potentials (MFAPs), represents the electrical activity of the motor unit. The values of the MUAP features are changed by denervation and ... -
Linear Modeling of Multiple Sclerosis and Its Subgroubs
Karaca, Yeliz; Osman, Onur; Karabudak, Rana (Turkish Neurological Soc., 2015)Objective: In this study, 120 patients diagnosed with clinical multiple sclerosis (MS) of relapsing remitting type (RRMS), secondary progressive type (SPMS) and primary progressive type (PPMS) were examined, as well as 19 ... -
Lung segmentation algorithm for CAD system in CTA images
Özkan, H.; Osman, Onur; Şahin, S.; Atasoy, M.M.; Barutca, H.; Boz, A.F.; Olsun, A. (2011)In this study, we present a new and fast algorithm for lung segmentation using CTA images. This process is quite important especially at lung vessel segmentation, detection of pulmonary emboly, finding nodules or segmentation ... -
Modeling of gravity anomalies due to 2D geological structures using Genetic algorithm
Osman, Onur; Albora, A. Muhittin (Istanbul University, 2015)In this paper, a new modeling technique is introduced using Genetic Algorithm (GA). In this method, Genetic algorithm (GA) is modified and used as an optimization method in geophysics applications. The problem at hand is ... -
New features for scanned bioelectrical activity of motor unit in health and disease
Artuğ, Necdet Tuğrul; Göker, İmran; Bolat, Bülent; Osman, Onur; Orhan, Elif Kocasoy; Baslo, M. Barış (Elsevier, 2018-03)The present study aims to find new features that support the differential diagnosis of neuromuscular diseases. Scanning EMG is an experimental method developed for understanding the motor unit organization and for observing ... -
A New Practical Intracerebral Hematoma Volume Calculation Method and Comparison to simple ABC/2
Cüce, Ferhat; Tulum, Gökalp; Dandin, Özgür; Ergin, Tuncer; Karadaş, Ömer; Osman, Onur (Turkish Neurosurgical Soc., 2020)AIM: To find a more practical and effective formula than simple ABC/2 (sABC/2) to calculate the hematoma volume in patients with subdural and parenchymal haemorrhage. MATERIAL and METHODS: We reviewed the records of 157 ... -
A novel method for pulmonary embolism detection in CTA images
Özkan, Haydar; Osman, Onur; Şahin, Sinan; Boz, Ali Fuat (Elsevier, 2014)In this paper, we propose a new computer-aided detection (CAD) – based method to detect pulmonary embolism (PE) in computed tomography angiography images (CTAI). Since lung vessel segmentation is the main objective to ... -
Variable active antenna spatial modulation
Osman, Onur (INST ENGINEERING TECHNOLOGY-IET, 2015)In this study, variable active antenna spatial modulation (VASM) technique, which allows the selection of any number of antennas (but not a constant number of active antennas) to transmit a symbol at the same signalling ... -
Variable antenna-space shift keying for high spectral efficiency in exponentially correlated channels
Osman, Onur (Wiley, 2017)the case of correlated channels. Then, to reduce the correlation effect, a novel antenna codeword construction method that minimizes the pairwise error probability is introduced for exponentially correlated channels. ...