Yazar "Gerek, Ömer Nezih" için Bilgisayar Mühendisliği Bölümü listeleme
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A 3D Lifting Based Motion Compensation Augmented Video Coder
Telceken, Sedat; Görgülü, Şükrü; Gerek, Ömer Nezih (IEEE, 2009)This study introduces a video compression method that uses spatio - temporal lifting based algorithms to compress the video signals. The temporal correlation of consecutive frames causes temporal redundancies, which are ... -
A 3D lifting based motion compensation augmented video coder [Hareket dengeleme katkili 3B yükseltmeye dayali video kodlayici]
This study introduces a video compression method that uses spatio - temporal lifting based algorithms to compress the video signals. The temporal correlation of consecutive frames causes temporal redundancies, which are ... -
A biorthogonal wavelet design technique using Karhunen-Loeve transform approximation
Kale, Mehmet Cemil; Ataç, Gizem; Gerek, Ömer Nezih (Academic Press Inc Elsevier Science, 2016)The lifting style biorthogonal wavelet implementation has a nice property of enabling flexible design; it is immediately reversible and has a simple relation to subband filters. In this work, we present a method to design ... -
Feature selection for power quality event classification [Güç kalitesi olaylarinin siniflandirilmasi için öznitelik seçimi]
Günal, Serkan; Edizkan, R.; Gerek, Ömer Nezih; Ece, D. G. (2008)Power quality events may result in interruption or malfunctioning of electrical equipments that are fed through the voltage line. Detection of such cases by monitoring the voltage waveform remains an important engineering ... -
Induction Motor Fault Diagnosis via Current Analysis on Time Domain
Günal, Serkan; Ece, Doğan Gökhan; Gerek, Ömer Nezih (IEEE, 2009)This study proposes a novel approach to induction motor fault diagnosis through motor current analysis. Most of the previous works employing motor current analysis use spectral methods to extract required features for ... -
Induction motor fault diagnosis via current analysis on time domain [Zaman bölgesinde akim analiziyle i·ndüksiyon motoru hata tespiti]
Günal, Serkan; Ece, D. G.; Gerek, Ömer Nezih (2009)This study proposes a novel approach to induction motor fault diagnosis through motor current analysis. Most of the previous works employing motor current analysis use spectral methods to extract required features for ... -
A Low-Computational Approach on Gaze Estimation With Eye Touch System
Topal, Cihan; Günal, Serkan; Kocdeviren, Onur; Doğan, Atakan; Gerek, Ömer Nezih (IEEE-Inst Electrical Electronics Engineers Inc, 2014)Among various approaches to eye tracking systems, light-reflection based systems with non-imaging sensors, e.g., photodiodes or phototransistors, are known to have relatively low complexity; yet, they provide moderately ... -
Motion compensated video coder based on block matching method with variable-sized blocks [Degi·şken-büyüklükte blok karşilaştirma yöntemi· i·le hareket dengelemeli· vi·deo kodlayici]
Telceken, Sedat; Doğan, M.; Gerek, Ömer Nezih (2012)This study aims to improve the efficiency of the hybrid (lifting and motion compensation) video compression method by incorporating variable block size for block matching. That hybrid method first separates even and odd ... -
The search for optimal feature set in power quality event classification
Günal, Serkan; Gerek, Ömer Nezih; Ece, Doğan Gökhan; Edizkan, Rıfat (Pergamon-Elsevier Science LTD, 2009)The significance of detection and classification of power quality (PQ) events that disturbs the voltage and/or current waveforms in the electrical power distribution networks is well known. Consequently, in spite of a large ... -
A Signal-Specific QMF Bank Design Technique Using Karhunen-Loeve Transform Approximation
Doğan, Muzaffer; Gerek, Ömer Nezih (Hindawi Publishing Corporation, 2011)Block Wavelet Transforms (BWTs) are orthogonal matrix transforms that can be obtained from orthogonal subband filter banks. They were initially generated to produce matrix transforms which may carry nice properties inheriting ... -
SWCD: a sliding window and self-regulated learning-based background updating method for change detection in videos
Işık, Şahin; Özkan, Kemal; Günal, Serkan; Gerek, Ömer Nezih (Is&T & Spie, 2018)Change detection with background subtraction process remains to be an unresolved issue and attracts research interest due to challenges encountered on static and dynamic scenes. The key challenge is about how to update ... -
A video encoder design combining edge-adaptive lifting and scalable block-matching with motion compensation
Telceken, Sedat; Gerek, Ömer Nezih (Tubitak Scientific & Technical Research Council Turkey, 2012)This study aimed to achieve video compression by using a novel lifting-based hybrid encoder that also uses motion compensation. The proposed encoder separates video frames into temporal groups, within which certain frames ...