Yazar "Topal, Cihan" için WoS İndeksli Yayınlar Koleksiyonu listeleme
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An Occlusion- Resistant Ellipse Detection Method by Joining Coelliptic Arcs
Çakır, Halil İbrahim; Topal, Cihan; Akınlar, Cüneyt (Springer Int Publishing Ag, 2016)In this study, we propose an ellipse detection method which gives prospering results on occlusive cases. The method starts with detection of edge segments. Then we extract elliptical arcs by computing corners and fitting ... -
A Parallel Huffman Coder on the CUDA Architecture
Rahmani, Habibelahi; Topal, Cihan; Akınlar, Cüneyt (IEEE, 2014)We present a parallel implementation of the widely-used entropy encoding algorithm, the Huffman coder, on the NVIDIA CUDA architecture. After constructing the Huffman codeword tree serially, we proceed in parallel by ... -
Prediction error PDF improvement in multichannel predictive coders
Topal, Cihan; Gerek, Ömer Nezih (IEEE, 2006)In this paper, multichannel predictive image coder outputs are investigated within each channel. By obtaining prediction error biases and compensating them in each channel, the total error histogram is sharpened. -
Quantification of Projective Distortion for Fiducial Markers
Benligiray, Burak; Topal, Cihan; Akınlar, Cüneyt; Genç, Yakup (IEEE, 2013)The aim of this study is to quantify the projective distortion of candidate quadrilaterals found in a square-framed fiducial marker detection algorithm. Based on the quantified value, candidates can be eliminated in such ... -
Real-time Edge Segment Detection with Edge Drawing Algorithm
Topal, Cihan; Özşen, Özgür; Akınlar, Cüneyt (IEEE, 2011)Edge Drawing (ED) is an edge detection method that works by computing a set of anchor points, which are most likely to be edge elements, and linking them with a predefined set of rules which we call smart routing. ED can ... -
A Robust Css Corner Detector Based on the Turning Angle Curvature of Image Gradients
Topal, Cihan; Özkan, Kemal; Benligiray, Burak; Akınlar, Cüneyt (IEEE, 2013)In this study, we present a new contour-based corner detection method based on the turning angle curvature computed from the contour gradients of the image. In general, curvature is computed with the pixel locations of the ... -
Secure seamless peer-to-peer (P2P) UDP communication using IPv4 LSRR option and IPv4+4 addresses
Topal, Cihan; Akınlar, Cüneyt (Pergamon-Elsevier Science LTD, 2009)The current structure of the Internet, with hosts behind network address translation (NAT) boxes, Causes well-known problems for P2P applications. There are several proposals, e.g., STUN, UPnP, MIDCOM, TURN among others, ... -
Sequential Forward Feature Selection for Facial Expression Recognition
Gacav, Caner; Benligiray, Burak; Topal, Cihan (IEEE, 2016)Facial expression recognition is an important computer vision problem with various applications. In this study, we investigate the effectiveness of features derived from facial landmarks in facial expression recognition. ... -
Video-based Lane Detection Using a Fast Vanishing Point Estimation Method
Benligiray, Burak; Topal, Cihan; Akınlar, Cüneyt (IEEE, 2012)Lane detection algorithms constitute a basis for intelligent vehicle systems such as lane tracking and involuntary lane departure detection. In this paper, we propose a simple and video-based lane detection algorithm that ... -
A Wearable Head-Mounted Sensor-Based Apparatus for Eye Tracking Applications
Topal, Cihan; Doğan, Atakan; Gerek, Ömer Nezih (IEEE, 2008)This work presents a novel approach to eye-tracking systems using eye-glass like apparatus equipped with relatively cheap IrDA sensors and IrDA LEDs connected to a computer. The proposed system produces very low dimensional ...