Kurum Yazarı "Topal, Cihan" WoS İndeksli Yayınlar Koleksiyonu İçin Listeleme
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Blind Rectification of Radial Distortion by Line Straightness
Benligiray, Burak; Topal, Cihan (IEEE, 2016)Lens distortion self-calibration estimates the distortion model using arbitrary images captured by a camera. The estimated model is then used to rectify images taken with the same camera. These methods generally use the ... -
Coin Recognition based on Geometric Features
Benligiray, Burak; Çakır, Halil İbrahim; Topal, Cihan; Akınlar, Cüneyt (IEEE, 2015)In this study, it is aimed to count the total amount in an image of coins using machine vision methods. The extrinsic parameters of the camera whose intrinsic parameters are already known are estimated relative to the plane ... -
ColorED: Color edge and segment detection by Edge Drawing (ED)
Akınlar, Cüneyt; Topal, Cihan (Academic Press Inc Elsevier Science, 2017)We extend our recent edge and segment detector, Edge Drawing (GrayED), to detect edge segments in color images. Edge Drawing for color images, named ColorED, takes in a color image, and outputs a set of edge segments, each ... -
Combining Feature-based and Model-based Approaches For Robust Ellipse Detection
Çakır, Halil İbrahim; Benligiray, Burak; Topal, Cihan (IEEE, 2016)Fast and robust ellipse detection is a vital step in many image processing and computer vision applications. Two main approaches exist for ellipse detection, i.e., model-based and feature-based. Model-based methods require ... -
A Comparison of Classification Methods for Local Binary Patterns
Kazak, Nihan; Koç, Mehmet; Benligiray, Burak; Topal, Cihan (IEEE, 2016)Texture recognition is an important tool used for content-based image retrieval, face recognition, and satellite image classification applications. One of the most successful features for texture recognition is local binary ... -
Counting Turkish Coins with a Calibrated Camera
Benligiray, Burak; Çakır, Halil İbrahim; Topal, Cihan; Akınlar, Cüneyt (Springer International Publishing Ag, 2015)We present a computer vision application that detects all coins in a test image, classifies each detected coin and computes the total amount. Coins to be counted are assumed to be lying on a flat surface. The application ... -
EDCircles: A real-time circle detector with a false detection control
Akınlar, Cüneyt; Topal, Cihan (Elsevier Sci LTD, 2013)We propose a real-time, parameter-free circle detection algorithm that has high detection rates, produces accurate results and controls the number of false circle detections. The algorithm makes use of the contiguous ... -
Edcircles: Real-Time Circle Detection By Edge Drawing (Ed)
Akınlar, Cüneyt; Topal, Cihan (IEEE, 2012)We propose a real-time, parameter-free circle detection algorithm that produces accurate results with very few false positives. The algorithm makes use of the contiguous (connected) set of edge segments produced by our ... -
Edcontours: High-Speed Parameter-Free Contour Detecton Using Edpf
Akınlar, Cüneyt; Topal, Cihan (IEEE, 2012)We present a high-speed contour detector, which we name EDContours, that works by running our real-time parameter-free edge segment detector, Edge Drawing Parameter Free (EDPF), at different scale-space representations of ... -
Edge Drawing: A combined real-time edge and segment detector
Topal, Cihan; Akınlar, Cüneyt (Academic Press Inc Elsevier Science, 2012)We present a novel edge segment detection algorithm that runs real-time and produces high quality edge segments, each of which is a linear pixel chain. Unlike traditional edge detectors, which work on the thresholded ... -
EDLines: A real-time line segment detector with a false detection control
Akınlar, Cüneyt; Topal, Cihan (Elsevier Science BV, 2011)We propose a linear time line segment detector that gives accurate results, requires no parameter tuning, and runs up to 11 times faster than the fastest known line segment detector in the literature; namely, the line ... -
Edlines: Real-Time Line Segment Detection By Edge Drawing (Ed)
Akınlar, Cüneyt; Topal, Cihan (IEEE, 2011)We propose a linear time line segment detector that gives accurate results, requires no parameter tuning, and runs up to 11 times faster than the fastest known line segment detection algorithm in the literature; namely, ... -
Edpf: a Real-Time Parameter-Free Edge Segment Detector With a False Detection Control
Akınlar, Cüneyt; Topal, Cihan (World Scientific Publ Co Pte LTD, 2012)We propose a real-time, parameter-free edge/edge segment detection algorithm based on our novel edge/edge segment detector, the edge drawing (ED) algorithm; hence the name edge drawing parameter free (EDPF). EDPF works by ... -
Enabling peer-to-peer communication for hosts in private address realms using IPv4 LSRR option and IPv4+4 addresses
Topal, Cihan; Akınlar, Cüneyt (Inst Engineering Technology-Iet, 2009)Enabling peer-to-peer (P2P) communication for hosts behind network address translation (NAT) boxes is an important and difficult problem. Existing proposals, for example, UPnP, MIDCOM, TURN, STUN, STUNT, P2PNAT, NATBlaster ... -
Greedy Search for Descriptive Spatial Face Features
Gacav, Caner; Benligiray, Burak; Topal, Cihan (IEEE, 2017)Facial expression recognition methods use a combination of geometric and appearance-based features. Spatial features are derived from displacements of facial landmarks, and carry geometric information. These features are ... -
A Head-Mounted Sensor-Based Eye Tracking Device: Eye Touch System
Topal, Cihan; Gerek, Ömer Nezih; Doğan, Atakan (Assoc Computing Machinery, 2008)In this study, a new eye tracking system, namely Eye Touch, is introduced. Eye Touch is based on an eyeglasses-like apparatus on which IrDA sensitive sensors and IrDA light sources are mounted. Using inexpensive sensors ... -
Implementing IPv4+4 addressing architecture with IPv4 LSRR option for seamless peer-to-peer (P2P) communication
Topal, Cihan; Akınlar, Cüneyt (Springer-Verlag Berlin, 2007)IPv4 architecture is well entrenched with Network Address Translation (NAT) boxes, which cause well-known problems for Peer-to-Peer (P2P) applications. IPv6 would enable end-to-end connectivity when deployed, but the ... -
Improving the Efficiency of Predictive Coders Via Adaptive Multiple Predictor Cooperation
Sar, Hüseyin; Topal, Cihan; At, Nuray; Gerek, Ömer Nezih (IEEE, 2013)Due to the popularity of the prediction concept in time series analysis, predictive coding has been an attractive approach, particularly in lossless image compression. Utilization of prediction in time series not only makes ... -
Lens Distortion Rectification Using Triangulation Based Interpolation
Benligiray, Burak; Topal, Cihan (Springer Int Publishing Ag, 2015)Nonlinear lens distortion rectification is a common first step in image processing applications where the assumption of a linear camera model is essential. For rectifying the lens distortion, forward distortion model needs ... -
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 ...