Επιστημονικές Εργασίες
Διατριβές
[Τ1] A.Delopoulos, “Estimation of Autocorrelation and Spectra using Cumulants and Polyspectra: non-parametric and parametric approaches,” MSc Thesis, Dept. of Electrical Engineering, University of Virginia, May 1990.
[Τ2] Α. Ντελόπουλος, “Ανθεκτικές Τεχνικές Ταυτοποίησης Συστημάτων, Αναγνώρισης- Κωδικοποίησης Σημάτων και Εικόνων Παρουσία Θορύβου,” Διδακτορική Διατριβή, Τομέας Πληροφορικής, Τμήμα Ηλεκτρολόγων Μηχανικών και Μηχανικών Υπολογιστών, ΕΜΠ, Δεκέμβριος 1992.

Εργασίες σε διεθνή περιοδικά
[J1] A.Delopoulos and G.B.Giannakis, “Strongly Consistent Identification Algorithms and Noise Insensitive MSE Criteria,” IEEE Trans. on Signal Processing, vol. 40, no. 8, pp. 1955-1970, August 1992.
[J2] A.Delopoulos, S.Κollias, and A.Tirakis, “Invariant image classification using triple-correlation-based neural networks,” IEEE Trans. on NN, vol. 5, no. 3, pp. 392-408, May 1994.
[J3] A.Delopoulos and G.B.Giannakis, “Consistent identification of stochastic linear systems with noisy input-output data,” Automatica, vol. 30, no. 8, pp. 1271-1294, August 1994.
[J4] A. Delopoulos and G.B. Giannakis, “Cumulant Based Identification of Noisy Closed-Loop Systems, ” Intl. Journal of Adaptive Control and Signal Processing, vol. 10, no. 2/3, pp. 303-317, March 1996.
[J5] G. B. Giannakis and A. Delopoulos, “Cumulant based autocorrelation estimates of non-Gaussian linear processes,” Signal Processing, vol. 47, pp. 1-17, 1995.
[J6] A. Tirakis, A. Delopoulos and S. Kollias, “2-D Filter Bank Design for Optimal Reconstruction using Limited Subband Information, ” IEEE Trans. on Image Processing, vol. 4, no. 8, pp. 1160-1165, August 1995.
[J7] A. Delopoulos and S. Kollias, “Optimal Filterbanks for Reconstruction from Noisy Subband Components, ” IEEE Trans. on Signal Processing, vol. 44, no. 2, pp. 212-224, February 1996.
[J8] A. Delopoulos, L. Sukissian, and S. Kollias, “An Efficient Multiresolution Texture Classification Scheme using Neural Networks,” Intl. J. Computer Mathematics, vol.68, no 1-2, 1998.
[J9] S. Kollias and A. Delopoulos, “Multiresolution Techniques and their Applications to Image Recognition,” Expert Systems Techniques and Applications, Academic Press.
[J10] S. Pavlopoulos and A. Delopoulos, “Designing and Implementing the Transition to a Fully Digital Hospital: the Hellenic Experience,” IEEE Trans on Information Technology in Biomedicine, vol. 3, no. 1, pp. 6-19. March 1999.
[J11] Y. Xirouhakis and A. Delopoulos, “Least Squares Estimation of 3D Shape and Motion of Rigid Objects from their Orthographic Projections,” IEEE Trans. Pattern Analysis and Machine Intelligence, vol. 22, no. 4, pp. 393-399, April 2000.
[J12] Y. Xirouhakis, A. Drosopoulos, and A. Delopoulos, “Efficient Camera Tracking in Virtual Sets,” IEEE Trans. on Image Processing, vol. 10, no. 4, pp. 609-622 April 2001.
[J13] M. Falelakis, C. Diou and A. Delopoulos, “Semantic Identification: Balancing between Complexity and Validity,” submitted to EURASIP/ Journal for Applied Signal Processing, vol. 2006, Article ID 41716, 12 pages, 2006. doi:10.1155/ASP/2006/41716.
[J14] M. Wallace, T. Athanasiadis, Y. Avrithis, A.N. Delopoulos, S. Kollias, “Integrating multimedia archives: the architecture and the content layer,” IEEE Transactions on Systems, Man and Cybernetics, Part A, Volume 36, Issue 1, Jan. 2006 Page(s):34 – 52.
[J15] M. Falelakis, C. A. Diou, and A. Delopoulos, “Complexity control in semantic identification,” Intl. Journal of Intelligent Systems Technologies and Applications, Vol 1, Number 3-4 / 2006, pp. 247 – 262.
[J16] C. Diou, N. Batalas, A. Delopoulos, “Indexing and browsing of color images: Design considerations,” Studies in Computational Intelligence, 2008, pp. 329-346.
[J17] T. Agorastos, V. Koutkias, M. Falelakis, I. Lekka, T. Mikos., A. Delopoulos, P. A. Mitkas, A. Tantsis, S. Weyers, P. Coorevits, A. M. Kaufmann, R. Kurzeja and N. Maglaveras, “Semantic Integration of Cervical Cancer Data Repositories to Facilitate Multicenter Association Studies: The ASSIST Approach,” Cancer Informatics 2009:8 pp. 31–44.

Εργασίες σε πρακτικά διεθνών συνεδρίων
[C1] G. B. Giannakis, and A. Delopoulos, “Non-parametric estimation of autocorrelation and spectra using cumulants and polyspectra,” Proc. of Soc. of Photo-Opt. Instr. Eng., Advanced Signal Processing Alg., and Implem.(SPIE ’90), vol. 1348, pp.503-517, San Diego, CA, July 1990.
[C2] A. Delopoulos, and G. B. Giannakis, “Strongly consistent identification algorithms and noise insensitive MSE criteria,” Proc. of 4th Digital Signal Processing Workshop, pp.8.6.1-8.6.2, New Paltz, NY, September 1990.
[C3] A. Delopoulos, and G. B. Giannakis, “Strongly consistent output only and input-ouput identification in the presence of Gaussian noise,” Proc. of Intl. Conf. on ASSP,(ICASSP ’91), pp. 3521-3524, Toronto, Canada, May 1991.
[C4] A. Delopoulos, and G. B. Giannakis, “Input Design for Consistent Identification in the Presence of Input/Output Noise,” Proc. of Intl. Signal Processing Workshop on Higher-Order Statistics, pp. 33-36, Chamrousse – FRANCE, July 1991.
[C5] A. Delopoulos, A. Tirakis and S. Kollias, “Invariant image recognition using triple correlations,” Proc. of EUSIPCO-92, vol.1, pp.571-574, Brussels, 1992.
[C6] A. Tirakis, A. Delopoulos, and S. Kollias,”Cumulant-based neural network classifiers,” Proc. of ICANN-92, vol.2, pp.1227-1230, Brighton, UK, 1992.
[C7] M. Rangoussi, A. Delopoulos, and M. K. Tsatsanis, “On the use of higher-order-statistics for robust endpoint detection of speech,” Proc. of 3rd Intl. Workshop on Higher Order Statistics, pp. 56-60, Lake Tahoe California, June 7-9, 1993.
[C8] Y. Avrithis, A. Delopoulos, and S. Kollias, “An Efficient Scheme for Invariant Optical Character Recognition Using Triple Correlations, ” Proc. of the Intl. Conf. on DSP and II Intl. Conf. on Comp. Applications to Engineering Systems, vol 1, pp. 184-189, Nicosia, Cyprus, July 1993.
[C9] A Tirakis, A Delopoulos, S Kollias, “Neural-Network-Based image Classification Using Optimal Multiresolution Analysis,” Proc of Intl. Conference on NN and SP (NNASP’93), August 17-20, 1993.
[C10] A. Tirakis, A. Delopoulos, and S. Kollias,”Invariant Image Recognition Using Triple Correlations and Neural Networks,” Proc. of IEEE Intl. Conference on Neural Networks, vol. VI, pp. 4055-4060, Orlando, FL, June 1994.
[C11] N. G. Panagiotidis, A. Delopoulos, and S. D. Kollias, “Neural-Network Based Classification of Laser-Doppler Flowmetry Signals,” Proc. of the IEEE Workshop on Neural Networks for Signal Processing IV, pp. 709-718, Ermioni, Greece, 1994.
[C12] A. Delopoulos and S. Kollias, “Optimal filterbanks for signal reconstruction from noisy subband components,” Proc. of the 28th ASILOMAR Conference on Signals, Systems and Computers, vol. 2, pp. 991-995, Asilomar CA, October 31-November 2, 1994.
[C13] M. Rangoussi, and A. Delopoulos, “Recognition of Unvoiced Stops from their Time-Frequency Representation,” Proc. of Intl. Conf. on ASSP, (ICASSP 95 ), vol. 1, pp. 792-795, Detroit, May 1995.
[C14] M. Rangoussi, and A. Delopoulos, “Classification of Consonants using Wigner Distribution Features,” Proc. of 12th Intl. Conf. on DSP, pp. 78-83, Limassol, Cyprus, June 26-28, 1995 (Invited).
[C15] A. Delopoulos, M. Rangoussi and J. Andersen, “Recognition of Voiced Speech from the Bispectrum,” Proc. of EUSIPCO 96, pp. 117-120, Trieste, Itally, September 1996.
[C16] A. Delopoulos, D. Kalogeras, V. Alexopoulos and S. Kollias, “Real Time MPEG-1 Video Transmission over Local Area Networks,” Proc. of SPIE of the Conference on Digital Compression Technologies & Systems for Video Communications, vol. 2952, pp. 174-181, Berlin, 1996.
[C17] N. Panagiotides, A. Delopoulos and S. Kollias, “Application Driven Computation of Optimum Quantization Tables for DCT based block coders,” Proc. of SPIE of the Conference on Digital Compression Technologies & Systems for Video Communications, vol. 2952, pp. 617-622, Berlin, 1996.
[C18] V. Alexopoulos, A. Delopoulos, S. Kollias, “Towards a Standardization for Medical Video Encoding and Archiving,” Proc. of the 14th Intl. EuroPacs Meeting, Heraklion, Crete, Greece, Oct 1996.
[C19] A. Delopoulos and M. Rangoussi, “Cumulants of a Multidimensional Process Observed at Rationally Related Resolutions,” Proc. of 1997 Intl. Workshop on Sampling Theory and Applications, pp. 205-210, Aveiro, Portugal, June 1997.
[C20] A. Delopoulos and M. Rangoussi and D. Kalogeras, “Fractional Sampling Rate Conversion in the 3rd Order Cumulant Domain and Applications,” Proc. of 13th Intl. Conf. on DSP, vol I, pp. 157-160, Santorini, Greece, July 1997 (invited).
[C21] A. Delopoulos and M. Rangoussi, “The Fractal Behaviour of Unvoiced Plosives: A Means for Classification,” Proc. of 5th European Conf. on Speech Communication and Technology (EUROSPEECH’97),Vol. 1, pp. 457-460, Rhodes, Greece, September 1997.
[C22] A. Delopoulos and Y. Xirouhakis, “Robust Estimation of Motion and Shape based on Orthographic Projections of Rigid Objects,” Proc. of IEEE Tenth Image and Multidimensional Signal Processing Workshop – IMDSP’98..
[C23] A. Doulamis, N. Doulamis and A. Delopoulos, “Optimal Subband Analysis Filters Compensating for Quantization and Additive Noise,” Proc of EUSIPCO 98.
[C24] Y. S. Avrithis, A. N. Delopoulos and V. N. Alexopoulos, “Ultrasonic Array Imaging Using CDMA Techniques”, Proc. of EUSIPCO 98.
[C25] V. Alexopoulos, A. Delopoulos and S. Kollias, “Effective Image Expansion Using Subband Filterbanks,” Proc. of EURISCON 98.
[C26] Y. Xirouhakis, Y. Votsis and A. Delopoulos, “Estimation of 3D Motion and Structure of Human Faces,” in Proc. of EURISCON 98.
[C27] Y. Xirouhakis, A. Tirakis and A. Delopoulos, “An Efficient Graph Representation for Image Retrieval based on Color Composition,” Third IMACS/IEEE Conference on Circuits, Systems, Communications and Computers (CSCC’99), Athens, Greece, July 1999.
[C28] Y. Xirouhakis, G. Tsechpenakis., A. Delopoulos, “User Choices for Efficient 3D Motion and Shape Extraction from Orthographic Projections”, accepted in the 6th IEEE International Conference on Electronics, Circuits and Systems, Paphos, Cyprus, September 1999.
[C29] Y. Xirouhakis, A. Drosopoulos, and A. Delopoulos, “A Novel Approach for the Estimation of Camera Motion in Virtual Studios Applications”, International Workshop on Synthetic-Natural Workshop on Synthetic-Natural Hybrid Coding and 3D Imaging (IWSNHC3DI’99), Santorini, Greece, 1999.
[C30] A. Briassouli, Y. Xirouhakis, and A. Delopoulos, “Recursive 3D Reconstruction under Orthography using Kalman Filtering”, International Workshop on Synthetic-Natural Workshop on Synthetic-Natural Hybrid Coding and 3D Imaging (IWSNHC3DI’99), Santorini, Greece, 1999.
[C31] G. Tsechpenakis, Y. Xirouhakis, and A. Delopoulos, “2D Motion Estimation in the Extraction of 3D Motion and Structure of Rigid Objects,” International Workshop on Synthetic-Natural Hybrid Coding and 3D Imaging (IWSNHC3DI’99), Santorini, Greece, September 1999.
[C32] A. Drosopoulos, Y. Xirouhakis, and A. Delopoulos, “An Optical Camera Tracking System for Virtual Sets Applications,” Visual, Modeling and Visualization Workshop (VMV’99) , Erlangen, Germany, November 1999.
[C33] Y. Xirouhakis, V. Mathioudakis and A. Delopoulos, “An Efficient Algorithm for Mobile Object Localization in Video Sequences,” Visual, Modeling and Visualization Workshop (VMV’99) , Erlangen, Germany, November 1999.
[C34] A. Drosopoulos, Y. Xirouhakis, and A. Delopoulos, “Optical Camera Tracking in Virtual Studios: Degenerate Cases,” International Conference on Pattern Recognition (ICPR 2000) , Barcelona, Spain, September 2000.
[C35] Y. Xirouhakis, A. Drosopoulos, and A. Delopoulos, “Camera Motion Estimation Using 3D-to-2D Line Correspondences,” IEEE Nordic Signal Processing Symposium (NORSIG2000), Kolmarden, Sweden, June 2000.
[C36] Y. Xirouhakis and A. Delopoulos, “A Comparative Study on 3D Motion Estimation under Orthography,” IEEE Nordic Signal Processing Symposium (NORSIG2000), Kolmarden, Sweden, June 2000.
[C37] A. Delopoulos, M. Rangoussi, Y. Xirouhakis and A. Drosopoulos, “Audio Pattern Recognition and Localization in Continuous Playout,” Proc. of 2001 IEEE-EURASIP workshop on Nonlinear Signal and Image Processing 2001, Baltimore, Maryland USA, June 2001.
[C38] A. Delopoulos, S. Kollias, Y. Avrithis, W.Haas, K. Majcen, “Unified Intelligent Access to Heterogeneous Audiovisual Content,” Proc. of CBMI 2001, Brescia, Italy, September 2001.
[C39] Y. Avrithis, G. Stamou, A. Delopoulos, and S. Kollias, “Intelligent Semantic Access to Audiovisual Content,” Proc. of SETN-02, Thessaloniki, Greece, April 2002.
[C40] G. Tsechpenakis, Y. Xirouhakis and A. Delopoulos, “A Multiresolution Approach for Main Mobile Object Localization in Video Sequences,” Proc. International Workshop on Very Low Bitrate Video Coding 2001 (VLBV 2001), Athens, Greece, October 2001.
[C41] G. Akrivas, S. Ioannou, E. Karakoulakis, K. Karpouzis, Y. Avrithis, A. Delopoulos, S. Kollias, I. Varlamis and M. Vaziriannis, “An Intelligent System for Retrieval and Mining of Audiovisual Material Based on the MPEG-7 Description Schemes,” Proc. Eunite 2001, European Symposium on Intelligent Technologies, Hybrid Systems and their implementation on Smart Adaptive Systems, Tenerife, Spain, December 2001.
[C42] Y. Avrithis, G. Stamou, A. Delopoulos and S. Kollias, “Intelligent Semantic Access to Audiovisual Content,” 2nd Hellenic Conference on Artificial Intelligence (SETN-02), Thessaloniki, Greece, 2002 published in Lecture Notes in Artificial Intelligence, Springer-Verlag, Vol. 2308, 2002, pp. 215-224
[C43] P. Panagiotopoulos, M. Falelakis and A. Delopoulos “Efficient Semantic Search using Finite Automata,” Proc. of COST276 International Workshop on Information and Knowledge Management for Integrated Media Communication, pp. 11-16, Thessaloniki, Greece, May 2004.
[C44] M. Falelakis, C. Diou and A. Delopoulos, “Identification of Semantics: Balancing between Validity and Complexity,” Proc. of IEEE workshop on Multimedia Signal Processing (MMSP), pp. 434-437, Sienna, Italy, September 2004.
[C45] M. Falelakis, C. Diou, A. Valsamidis and A. Delopoulos, “Complexity Control in Semantic Identification,” Proc. of FUZZ-IEEE 2005 Reno, Nevada, May 22-25.
[C46] M. Falelakis, C. Diou, A. Valsamidis and A. Delopoulos, “Dynamic Semantic Identification with Complexity Constraints as a Knapsack Problem,” Proc. of FUZZ-IEEE 2005 Reno, Nevada, May 22-25.
[C47] E. Kaliva, A. Delopoulos, “An iterative method for 3D reconstruction under orthography,” Proc. of the Fifth IASTED International Conference on Visualization, Imaging, and Image Processing, pp. 382-387, Benidorm, Spain, Sep 07-09, 2005.
[C48] N. Aifanti, A. Delopoulos, “Fuzzy-logic based information fusion for image segmentation,” IEEE International Conference on Image Processing 2005 (ICIP2005), pp. 1921-1924, Genoa, Italy, Sep 11-14, 2005.
[C49] M. Falelakis, C. Diou, M. Wallace, A. Delopoulos, “Minimizing uncertainty in semantic identification when computing resources are limited”, Proc 15th International Conference on Artificial Neural Networks (ICANN 2005), SEP 11-15, 2005 Warsaw, POLAND and ARTIFICIAL NEURAL NETWORKS: FORMAL MODELS AND THEIR APPLICATIONS – ICANN 2005, PT 2, PROCEEDINGS Book Series: LECTURE NOTES IN COMPUTER SCIENCE Volume: 3697 Pages: 817-822 Published: 2005
[C50] N. Batalas, C. Diou, A. Delopoulos, “Efficient indexing, color descriptors and browsing in image databases,” Proceedings – SMAP 2006: 1st International Workshop on Semantic Media Adaptation and Personalization, art. no. 4041971, pp. 129-134.
[C51] C. Diou, G. Katsikatsos, A. Delopoulos, “Constructing fuzzy relations from WordNet for word sense disambiguation,” Proceedings – SMAP 2006: 1st International Workshop on Semantic Media Adaptation and Personalization, art. no. 4041972, pp. 135-140.
[C52] P. Mitkas, V. Koutkias, A. Symeonidis, M. Falelakis, C. Diou, I. Lekka, A. Delopoulos, T Agorastos and N. Maglaveras, “Association Studies on Cervical Cancer Facilitated by Inference and Semantic Technologies: The ASSIST Approach,” International Congress of the European Federation for Medical Informatics (MIE08), Goteborg, Sweden, 2008
[C53] P. Mitkas, C. Maramis, A. Delopoulos, A. Symeonidis, S. Diplaris, M. Falelakis, F. Psomopoulos, A. Batzios, N. Maglaveras, I. Lekka, V. Koutkias, T. Agorastos, T. Mikos, A. Tantsis, “ASSIST: Employing Inference and Semantic Technologies to Facilitate Association Studies on Cervical Cancer,” 6th European Symposium on Biomedical Engineering, Chania, Greece, June 2008
[C54] T. Agorastos, P. Mitkas, M. Falelakis, F. Psomopoulos, A. Delopoulos, A. Symeonidis, S. Diplaris, C. Maramis, A. Batzios, I. Lekka, V. Koutkias, T. Mikos, A. Tantsis, N. Maglaveras, “Large Scale Association Studies Using Unified Data for Cervical Cancer and beyond: The ASSIST Project,” World Cancer Congress, Geneva, Switzerland, August 2008
[C55] C. Diou, C. Papachristou, P. Panagiotopoulos, G. Stephanopoulos, N. Dimitriou, A. Delopoulos, H. Rode, R. Aly, A. P. de Vries and T. Tsikrika, “VITALAS at TRECVID-2008,” 6th TREC Video Retrieval Evaluation Workshop (TRECVID08), 2008
[C56] Angelos Tsolakis, Manolis Falelakis and Anastasios Delopoulos, “A Framework for Efficient Correspondence using Feature Interrelations,” 19th International Conference on Pattern Recognition (ICPR08), Tampa, Florida, USA, 2008
[C57] C. Dimou, M. Falelakis, A. Symeonidis, A. Delopoulos, and P. Mitkas, “Constructing Optimal Fuzzy Metric Trees for Agent Performance Evaluation,” IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology (WI-IAT2008), Sydney, Australia, 2008
[C58] C. Diou, A. P. de Vries and A. Delopoulos, “Image annotation using clickthrough data T. Tsikrika,”In Proceedings of the 8th ACM International Conference on Image and Video Retrieval, 8-10 July, Santorini, Greece, 2009
[C59] T. Tsikrika, C. Diou, A. P. de Vries, and A. Delopoulos, Theseus/ImageCLEF workshop on visual information retrieval evaluation, 2009
[C60] M. Falelakis, C. Maramis, I. Lekka, P. Mitkas and A. Delopoulos, “An Ontology for Supporting Clinical Research on Cervical Cancer ,” in Proc. International Conference on Knowledge Engineering and Ontology Development, Madeira, Portugal, October, 2009
[C61] M. Falelakis, L. Karydas and A. Delopoulos, “Knowledge-based Concept Score Fusion for Multimedia Retrieval,” In Proc. WIC International Conference on Active Media Technologies, Beijing, China, October, 2009
[C62] C. Diou, G. Stephanopoulos, N. Dimitriou, P. Panagiotopoulos, C. Papachristou, A. Delopoulos, H. Rode, T. Tsikrika, A. P. de Vries, D. Schneider, J. Schwenninger, M.-L. Viaud, A. Saulnier, P. Altendorf, et al, “VITALAS at TRECVID-2009,” 7th TREC Video Retrieval Evaluation Workshop (TRECVID09), 2009

Εργασίες σε Κεφάλαια Βιβλίων:
[B1] A. Delopoulos, “Multimedia Coding Techniques for Wireless Networks,” in Emerging Wireless Multimedia Technologies and Services, edited by A. Salkintzis and N. Passas, John Wiley and Sons, 2005.
[B2] C. Diou, A. Manta, A. Delopoulos, “Space-time tubes and motion representation,” in IFIP International Federation for Information Processing, Volume 204, Artificial Intelligence Applications and Innovations, eds. Maglogiannis, I., Karpouzis, K., Bramer, M., (Boston: Springer), 2006, pp. 583-590