::. CBA Research : Publications ::.

Theses

PhD Thesis: Density-Based Shape Descriptors and Similarity Learning for 3D Object Retrieval. Télécom ParisTech and Bogazici University, November 2007. [ pdf ] [ slides ]

MS Thesis: Analysis of Functional Near Infrared Spectroscopy Signals. Bogazici University, January 2004. [ pdf ] [ slides ]

In Journals

S. Aslan, C. B. Akgul, B. Sankur, and E. T. Turhanli. Exploring visual dictionaries: A model driven perspective. In Journal of Visual Communication and Image Representation, vol. 49, pp. 315-331, 2017. [ publisher site ]
C. B. Akgul, D. L. Rubin, S. Napel, C. F. Beaulieu, H. Greenspan, B. Acar. Content-Based Image Retrieval in Radiology: Current Status and Future Directions. Journal of Digital Imaging, vol. 24, no. 2, pp. 208-222, 2011. [ pdf ]
C. B. Akgul, B. Sankur, Y. Yemez, F. Schmitt. Similarity Learning for 3D Object Retrieval using Relevance Feedback and Risk Minimization. Int. Journal of Computer Vision, Special Issue on 3D Object Retrieval, vol. 89, no. 2-3, pp. 392-407, 2010. [ pdf ]
C. B. Akgul, B. Sankur, Y. Yemez, F. Schmitt. 3D Model Retrieval using Probability Density-Based Shape Descriptors. IEEE Trans. on PAMI, vol. 31, no. 6, pp. 1117-1133, June 2009. [ pdf ]
C. B. Akgul, B. Sankur, Y. Yemez, F. Schmitt. Density-Based 3D Shape Descriptors. EURASIP Journal on Advances in Signal Processing, vol. 2007, Article ID 32503, 16 pages, 2007. [ pdf ]
C. B. Akgul, B. Sankur, A. Akin. Extraction of cognitive activity related waveforms from functional near infrared spectroscopy signals. Medical & Biological Engineering & Computing, vol. 44, pp. 945-958, November 2006. [ publisher site ]
C. B. Akgul, B. Sankur, A. Akin. Spectral analysis of event-related hemodynamic responses in functional near infrared spectroscopy. Journal of Computational Neuroscience, vol. 18, pp. 67-83, January 2005. [ publisher site ]

Talks and Whitepapers

3D Object Retrieval - A lightweight version of my thesis presentation.
Correspondence-free rotational alignment for 3D shapes - An exact rotational alignment approach leveraging symmetry properties of regular polyhedra and its approximate version.
Industrial Surface Inspection - A modest compendium of industrial surface inspection applications and associated challenges, thoughts on a framework handling such problems without emotional involvment.
Mining MR Image Data for Image-based Diagnosis of Dementia - A data-analytic feature discovery and learning approach to image-based diagnosis.
Applications with Kinect - A sampling of diverse applications using Kinect.
Data Mining: Fundamental Concepts - An introductory talk I gave during Urban Datascope.
Machine Learning Models for Action Recognition - A survey that I prepared for DemAAL 2013 Summer School.
Computer Vision and Other Tales - An introductory talk on computer vision and entrepreneurship I gave to high school students in Sabanci University Summer School.
Gorsel Tanimada Derin Ogrenme - An introductory talk on deep learning and visual recognition I gave during OBAYO 2016 (in Turkish).
Data Mining for Visual Recognition A Deep Learning Primer - An introductory talk on data mining and deep learning-based visual recognition I gave at MEF University Big Data Analytics Programme.
Yapay Zekanin Yeni Caginda Duyular ve Yaraticilik - A talk on perception, creativity and AI I gave in a Curiuous Community event.
How Data Science Can Help Design - A talk I gave on the potential uses of Data Science in design processes.
Automating Retail with Visual AI - A talk I gave at Global AI Bootcamp in Microsoft Turkey.
Intel and Vispera ShelfSight: Effective On-Shelf Inventory Management for Grocers - A whitepaper I co-authored with Dr. Erdem Yoruk (Vispera) and Dr. Farhaan Mohideen (Intel UK).

Patents

E. Yoruk, K. T. Oner, C. B. Akgül. Electronic Detection of Products, Poses of Products, and Arrangement of Products in a Display Structure, Electronic Scoring of Detected Product Poses and Product Arrangement, and Electronic generation of a Reference Image of a Product in its Canonical Pose. PCT/TR2017/050620, filed on 12-Dec-2017.
C. B. Akgül, K. C. Fidan, A. Aydin. Electronic Detection of Products and Arrangement of Products in a Display Structure, Electronic Detection of Objects and Arrangement of Objects on and around the Display Structure, Electronic Detection of Conditions of and around the Display Structure, and Electronic Scoring of the Detected Product and Object Arrangements and of the Detected Conditions . PCT/TR2017/050331, filed on 21-Jul-2017.
C. B. Akgul, A. Ekin. Relevance Feedback for Content-Based Image Retrieval . WIPO Patent Application WO/2011/001331, International Class G06F17/30, filing date 23-June-2010, publication date 06-Jan-2011.

In Proceedings

O. Ulusoy, C. B. Akgul, E. Anarim. Improving Image Captioning with Language Modeling Regularizations. In Innovations in Intelligent Systems and Applications Conference (ASYU 2019), Nov 2019.
E. Yoruk, K. Oner, C. B. Akgul. An Efficient Hough Transform for Multi-Instance Object Recognition and Pose Estimation. In 23rd International Conference on Pattern Recognition (ICPR 2016), Cancun, Mexico, Dec 4-8, 2016.
S. Aslan, C. B. Akgul, B. Sankur, and E. T. Turhanli. SymPaD: Symbolic Patch Descriptor. In 10th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISAPP 2015), Berlin, Germany, March 11-14, 2015.
S. Aslan, C. B. Akgul, and B. Sankur. Semantic interest point detection for image classification and interpretation. In IS&T/SPIE Electronic Imaging 2014: Image Processing: Machine Vision Applications VII, 2014.
O. Celiktutan, C. B. Akgul, C. Wolf and B. Sankur. Graph-Based Analysis of Physical Exercise Actions. In 1st ACM MM Workshop on Multimedia Indexing and information Retrieval for Healthcare: held in conjuction with ACM MM 2013, Barcelona, Spain, October 21-25, 2013.
N. B. Marvasti, C. B. Akgul, N. Kökciyan, S. Üsküdarli, P. Yolum, R. Turkay, B. Bakir and B. Acar. Clinical Experience Sharing by Similarity Case Retrieval. In 1st ACM MM Workshop on Multimedia Indexing and information Retrieval for Healthcare: held in conjuction with ACM MM 2013, Barcelona, Spain, October 21-25, 2013.
C. Sari, C. B. Akgul, B. Sankur.Combination of Gross Shape Features, Fourier Descriptors and Multiscale Distance Matrix for Leaf Recognition. In 55th International Symposium ELMAR-2013, Zadar, Croatia, September 25-27, 2013.
F. Negin, F. Ozdemir, C. B. Akgul, K. A. Yüksel, A. Ercil. A Decision Forest Based Feature Selection Framework for Action Recognition from RGB-Depth Cameras. In International Conference on Image Analysis and Recognition / Special Session: Recent Advances on RGB-D Camera Applications, Póvoa de Varzim, Portugal, June 26-28, 2013.
C. B. Akgul, B. Acar. Future PACS for decision support: content-based case retrieval. In International Hospital Vol 38, March/April 2012.
A. Sokmenoglu, C. B. Akgul. Exploring the Patterns and Trends of Socio-spatial Activities of Architecture Student Community in Istanbul by Data Mining. In Proc. of the eCAADe Conf., Zurich, Switzerland, September 2010.
C. B. Akgul, A. Ekin. A Probabilistic Information Fusion Approach to MR-Based Automated Diagnosis of Dementia. In Int. Conf. on Pattern Recognition, Istanbul, Turkey, August 2010.
C. B. Akgul, B. Sankur, Y. Yemez. Correspondence-Free Alignment of 3D Object Models. In SPIE Conf. on 3D Image Processing (3DIP) and Applications, San Jose, USA, January 2010.
C. B. Akgul, D. Unay, A. Ekin. Automated Diagnosis of Alzheimer's Disease using Image Similarity and User Feedback. In ACM CIVR'09, Santorini, Greece, July 2009.
A. Godil, H. Dutagaci, C. B. Akgul et al. SHREC 2009 ?Generic Shape Retrieval Contest. In Eurographics Workshop on 3D Object Retrieval, I. Pratikakis, M. Spagnuolo, T. Theoharis, and R. Veltkamp (Editors), March 2009.
C. B. Akgul, B. Sankur, Y. Yemez, F. Schmitt. Similarity Score Fusion by Ranking Risk Minimization for 3D Object Retrieval. In Eurographics Workshop on 3D Object Retrieval, Crete, Greece, April 2008. [ pdf ]
C. B. Akgul, B. Sankur, F. Schmitt, Y. Yemez. Multivariate Density-Based 3D Shape Descriptors. In IEEE Shape Modeling International'07, Lyon, France, June 2007. [ pdf ]
C. B. Akgul, F. Schmitt, B. Sankur, Y. Yemez. Multivariate Density-Based 3D Shape Descriptors. In SHREC 2007: Shape Retrieval Contest, Technical Report UU-CS-2007-015, R.C. Veltkamp and F. B. ter Haar (Editors), June 2007.
C. B. Akgul, B. Sankur, Y. Yemez, F. Schmitt. Improving Efficiency of Density-Based Shape Descriptors for 3D Object Retrieval. In MIRAGE?7, Springer LNCS Series, vol. 4418, pp. 330-340, INRIA Rocquencourt, France, March 2007.
D. Lesage, J. Darbon, C. B. Akgul. An Efficient Algorithm for Connected Attribute Thinnings and Thickenings. In ISVC'06, Springer LNCS Series, vol. 4292, pp. 393-404, Lake Tahoe, Nevada, USA, November 2006. [ pdf ]
C. B. Akgul, B. Sankur, F. Schmitt, Y. Yemez. Density-based Shape Descriptors for 3D Object Retrieval. In MRCS'06, Springer LNCS Series, vol. 4105, pp. 322-329, Istanbul, Turkey, September 2006.
C. B. Akgul, B. Sankur, Y. Yemez, F. Schmitt. A Framework for Histogram-Induced 3D Descriptors. In EUSIPCO'06, Florence, Italy, September 2006.
C. B. Akgul, B. Sankur, A. Akin. Extraction of cognitive activity related waveforms from functional near infrared signals. In EUSIPCO'06, Florence, Italy, September 2006. [ pdf ]
J. Darbon, C. B. Akgul. An Efficient Algorithm for Attribute Openings and Closings. In EUSIPCO'05, Antalya, Turkey, September 2005. [ pdf ]
C. B. Akgul, B. Sankur, A. Akin. Evidence of cognitive activity in functional near infrared spectroscopy signal. In OSA Optical Techniques in Neuroscience Topical Meeting, Miami Beach, Florida, USA, April 2004. [ pdf ]
E. Yörük, C. B. Akgul. Color image segmentation using fast watersheds and PDE-based regularization. In IEEE SIU'04, Cesme, Turkey, April 2004. [ pdf ]
C. B. Akgul. Computer-assisted Fish Recognition from Underwater Images. In 7th Underwater Science and Technology Meeting, Uludag University, Bursa, Turkey, December 2003.
U. E. Emir, C. B. Akgul, A. Akin, A. Ertüzün, B. Sankur, K. Harmanci. Wavelet Denoising vs. ICA Denoising for Functional Optical Imaging. In Int. Conf. on Neural Engineering, Capri, Italy, March 2003.