Publications
Links
Thesis
András
Hajdu: Neighbourhood sequences and character recognition by Walsh
transformation, University of Debrecen, Debrecen,
Hungary, 2003.
Book chapters
- B. Antal, I. Lazar, A. Hajdu: An Ensemble
Approach to Improve Microaneurysm Candidate Extraction, ICETE 2010,
Obaidat, Mohammad S.; Tsihrintzis, George A.; Filipe, Joaquim (Eds.), Communications in Computer and
Information Science, Vol. 222, Springer Verlag, pp. 378-394,
Heidelberg, 2011. PDF
Papers
- P. Prasanna et al. (B. Harangi, A. Hajdu,
A. Baran, J. Toth),
“IDRiD: Diabetic Retinopathy - Segmentation and
Grading Challenge”, Elsevier -
Medical Image Analysis, (2019) submitted.
- János Tóth, Henrietta
Tomán, András Hajdu: Efficient
Sampling-based Energy FunctionEvaluation for Ensemble Optimization
UsingSimulated Annealing, IEEE
Trans. on Image Processing (2019), submitted.
- Andras Hajdu, Gyorgy Terdik, Attila Tiba, Henrietta Toman: A stochastic approach to handle
knapsack problems in the creation of ensembles, IEEE Trans. on Pattern Analysis and Machine Intelligence
(2019), submitted.
- Andras Hajdu, Lajos Hajdu, Robert
Tijdeman: Finding well approximating lattices for a finite set of points, Mathematics of Computation 88 (315), (2019) 369-387, IF=1.75.
- Bálint Antal, Mayo Kayann Guerra
Silva Tavares, László Kovács, Balázs Harangi,
István Lázár, Brigitta Nagy, György
Kovács, József Szakács, János Tóth,
Tünde Pető, Adrienne Csutak, András Hajdu: Data analysis
applied to diabetic retinopathy screening: performance evaluation, Annales Mathematicae et Informaticae
49 (2018) pp. 3–9,
IF=0.5.
- Gyorgy Kovacs, Andras Hajdu: A
Self-Calibrating Approach for the Segmentation of Retinal Vessels by
Template Matching and Contour Reconstruction, Medical Image Analysis 29 (2016 Apr), 24-46, IF=3.654.
- Ramin Karimi, Andras Hajdu: HTSFinder:
Powerful Pipeline of DNA Signature Discovery by Parallel and Distributed
Computing, Evolutionary
Bioinformatics 12 (2016 Feb), 73-85, IF=1.452.
- Renato Besenczi, Janos Toth, Andras Hajdu:
A review on automatic analysis techniques for color fundus photographs, Computational and Structural
Biotechnology Journal 14
(2016), 371-384.
- Istvan Lazar, Andras Hajdu: Segmentation
of retinal vessels by means of directional response vector similarity and
region growing, Computers in Biology
and Medicine (Elsevier) (2015), 66
(November 2015), 209-221, IF=1.240. (Esteemed
Paper 2015, Top 10 - 15 Papers of the Year)
- Balazs Harangi, Andras Hajdu: Detection of
the optic disc in fundus images by combining probability models, Computers in Biology and Medicine
(Elsevier) (2015), 65
(October 2015), 10-24, IF=1.240.
- Mohammad Reza Azodinia, Andras Hajdu.
Article: A method for image retrieval using combination of color and
frequency layers, International
Journal of Computer Applications 118(3)
(May 2015), 10-13.
- Zsolt Torok, Tunde Peto, Eva Csosz, Edit
Tukacs, Agnes Molnar, András Berta, Jozsef Tozser, Andras Hajdu,
Valéria Nagy, Balint Domokos, Adrienne Csutak: Combined methods for
diabetic retinopathy screening, using retina photographs and tear fluid
proteomics biomarkers, Journal of
Diabetes Research (2014), Paper 623619, 8 pages, IF=3.536.
- Balazs Harangi, Andras Hajdu: Automatic exudate
detection by fusing multiple active contours and regionwise
classification, Computers in Biology
and Medicine (Elsevier) 54(1)
(November 2014), 156-171, IF=1.475.
- Balint Antal, Andras Hajdu: An
ensemble-based system for automatic screening of diabetic retinopathy, Knowledge-Based Systems (Elsevier) 60 (April 2014), 20-27, IF=4.104.
- Zsolt Torok, Tunde Peto, Eva Csosz, Edit
Tukacs, Agnes Marta Molnar, Zsuzsanna Maros-Szabo1, Andras Berta, Jozsef
Tozser, Andras Hajdu, Valeria Nagy, Balint Domokos, Adrienne Csutak: Tear
fluid proteomics multimarkers for diabetic retinopathy screening, BMC Opthalmology 13(40) (August 2013), 8 pages,
IF=1.44.
- Andras Hajdu, Lajos Hajdu, Agnes Jonas,
Laszlo Kovacs, Henrietta Toman: Generalizing the majority voting scheme to
spatially constrained voting, IEEE
Trans. on Image Processing 22(11) (November 2013), 4182-4194,
IF=3.042.
- Balint Antal, Andras Hajdu: Improving
microaneurysm detection in color fundus images by using context-aware
approaches, Computerized Medical
Imaging and Graphics (Elsevier) 37(5-6)
(September 2013), 403-408, IF=1.467.
- István Lázár and
András Hajdu: Retinal microaneurysm detection through local
rotating cross-section profile analysis, IEEE Trans. on Medical Imaging 32(2) (February
2013), 400-407, IF=3.643.
- György Kovacs and András
Hajdu: Translation Invariance in the Polynomial Kernel Space and Its
Applications in kNN Classification, Neural
Processing Letters (Springer) (September 2012), 1-27, IF=1.088.
- András Hajdu, Lajos Hajdu and
Robert Tijdeman: Approximation of the Euclidean distance by chamfer
distances, Acta Cybernetica 20(3)
(2012), 399-417. PDF
- Edit Tukacs, Agnes Korotij, Zsuzsanna
Maros-Szabo, Agnes Marta Molnar, Andras Hajdu, Zsolt Torok: Model
requirements for Biobank Software Systems, Bioinformation 8(6)
(2012), 290-292. IF*=1.15. PDF
- Balint Antal, Andras Hajdu: An
Ensemble-based System for Microaneurysm Detection and Diabetic Retinopathy
Grading, IEEE Trans. on Biomedical
Engineering 59(6) (2012),
1720-1726. IF=2.278. PDF
- Balint Antal, Andras Hajdu, Zsuzsa
Szabo-Maros, Zsolt Torok, Adrienne Csutak, Tunde Peto: A Two-phase
Decision Support Framework for the Automatic Screening of Digital Fundus
Images, Journal of Computational
Science (Elsevier) 3(5)
(2012), 262-268. PDF
- Ahmed Ayoub, Andras Hajdu, Arpad Nagy:
Automatic Detection of Pigmented Network in Melanoma Dermoscopic Images, The International Journal of Computer
Science and Communication Security (IJCSCS) 2 (January 2012), 58-63. PDF
- Bálint Antal, András
Hajdu: Improving microaneurysm
detection using an optimally selected subset of candidate extractors and
preprocessing methods, Pattern
Recognition 45 (2012),
255-261, IF=2.607. PDF
- Rashid Jalal Qureshi, Laszlo Kovacs,
Balazs Harangi, Brigitta Nagy, Tunde Peto, Andras Hajdu: Combining
algorithms for automatic detection of optic disc and macula in fundus
images, Computer Vision and Image
Understanding (CVIU) 116
(2012), 138–145, IF=2.404. PDF
- Bálint Antal, András Hajdu:
A stochastic approach to improve macula detection in retinal images, Acta Cybernetica 20 (2011), 5-15. PDF
- András Hajdu and Ioannis Pitas:
Piecewise linear digital curve representation and compression using graph
theory and a line segment alphabet, IEEE
Trans. on Image Processing 17/2
(February 2008), 126-133. PDF
- András Hajdu and Tamás
Tóth: Approximating non-metrical Minkowski distances in 2D, Pattern Recognition Lett. 29/6 (April 2008), 813-821. PDF
- András Hajdu and Ioannis Pitas:
Optimal approach for fast object-template matching, IEEE Trans. on Image Processing 16/8 (August 2007), 2048-2057. PDF
- András Hajdu, Lajos Hajdu and
Robert Tijdeman: General neighbourhood sequences in Zn,
Discrete Appl. Math. 155
(2007), 2507-2522. PDF
- András Hajdu, János Kormos,
Zsolt Lencse, Lajos Trón and Miklós Emri: The
"MEDIP-Platform Independent Software System for Medical Image
Processing" project, Journal of
Universal Computer Science 12/9
(2006), 1229-1239. PDF
- András Hajdu, János Kormos,
Tamás Tóth and Krisztián Veréb: Applications
of neighborhood sequence in image processing and database retrieval, Journal of Universal Computer Science
12/9 (2006), 1240-1253. PDF
- Attila Fazekas, András Hajdu and
Lajos Hajdu: Metrical neighborhood sequences in Zn,
Pattern Recognition Lett. 26/13
(2005), 2022-2032. PDF
- András Hajdu, János Kormos,
Benedek Nagy, Zoltán Zörgő: Choosing appropriate distance
measurement in digital image segmentation, Annales Univ.Sci. Budapest. Sect. Comp. 24 (2004), 193-208. PDF
- András Hajdu and Lajos Hajdu:
Approximating the Euclidean distance using non-periodic neighbourhood
sequences, Discrete Math. 283/1-3 (2004), 101-111. PDF
- András Hajdu: Geometry of
neighbourhood sequences, Pattern
Recognition Lett. 24/15
(2003), 2597-2606. PDF
- András Hajdu and Lajos Hajdu:
Velocity and distance of neighbourhood sequences, Acta Cybernet. 16
(2003), 133-145. PDF
- Attila Fazekas, András Hajdu and
Lajos Hajdu: Lattice of generalized neighbourhood sequences in nD and ¥D, Publ. Math. Debrecen
60 (2002), 405-427. PDF
- Attila Fazekas, András Hajdu: Recognizing typeset documents using
Walsh transformation, J.
Comput. Inf. Technol. 9 (2001), 101-112. PDF
- Attila Fazekas and András Hajdu: An
algorithm using Walsh transformation for compressing typeset documents, Acta Math. Acad. Paedagog.
Nyházi. (N.S.) 15 (1999),
61-68. PDF
- Attila Fazekas and András Hajdu: Analysing the noise sensitivity of
skeletonization algorithms, Studia
Universitatis "Babes-Bolyai", Vol. II (1997), 55-70. PDF
Proceedings
- Andras Hajdu, Balazs Harangi, Janos Toth,
Melinda Pap and Agnes Baran: Combining convolutional neural networks and
hand-crafted features in medical image classification tasks, 20th European Conference on Mathematics
for Industry (ECMI), Budapest, Hungary, p. 299.,
2018.
- Andras Hajdu, Lajos Hajdu, Balazs Harangi
and Attila Tiba: Detecting periodicity in digital images by the LLL
algorithm, 20th European Conference
on Mathematics for Industry (ECMI), Budapest, Hungary, p. 279., 2018.
- Attila Tiba, Andras Hajdu, Gyorgy Terdik, Henrietta Toman: Optimizing majority voting based
systems under a resource constraint for multiclass problems, The 20th European Conference on Mathematics
for Industry (ECMI), Budapest, Hungary, 2018.
- Balazs Harangi, Agnes Baran, Andras Hajdu:
Classification of Skin Lesions Using an Ensemble of Deep Neural Networks, 40th Annual International Conference of
the IEEE Engineering in Medicine and Biology Society (EMBC), Hawaii,
USA, pp. 2575-2578., 2018.
- Balazs Harangi, Janos Toth, Andras
Hajdu: Fusion of Deep Convolutional Neural Networks for Microaneurysm
Detection in Color Fundus Images, 40th
Annual International Conference of the IEEE Engineering in Medicine and
Biology Society (EMBC), Hawaii, USA, pp. 3705-3708., 2018.
- Peter Burai, Andras Hajdu,
Felipe-Riverón Edgardo Manuel, Balazs Harangi, Segmentation of the
uterine wall by an ensemble of fully convolutional neural networks, 40th Annual International Conference of
the IEEE Engineering in Medicine and Biology Society (EMBC), Hawaii,
USA, pp. 49-52., 2018.
- A. Tiba, B. Harangi, A. Hajdu: Efficient
Texture Regularity Estimation for Second Order Statistical Descriptors, 10th International Symposium on Image
and Signal Processing and Analysis (ISPA 2017), Ljubljana, Slovenia,
pp. 90-94, 2017.
- A. Hajdu, B. Harangi, R. Besenczi, I.
Lazar, G. Emri, L. Hajdu, R. Tijdeman: Title Measuring Regularity of
Network Patterns by Grid Approximations using the LLL Algorithm, 23rd International
Conference on Pattern Recognition (ICPR 2016), Cancun, Mexico, 2016,
1525-1530.
- A. Hajdu, H. Toman, L. Kovacs, L. Hajdu:
Composing ensembles of object detectors under execution time constraint, 23rd International
Conference on Pattern Recognition (ICPR 2016), Cancun, Mexico, 2016,
217-222.
- J. Toth, L. Bartha, T. Szabo, I. Lazar, B.
Harangi, A. Hajdu: An Online Application for Storing, Analyzing, and
Sharing Dermatological Data, 6th
IEEE International Conference on Cognitive Infocommunications (CogInfoCom
2015), Gyor. Hungary, 339-342.
- R. Besenczi, K. Szitha, B. Harangi, A.
Csutak, A. Hajdu: Automatic Optic Disc and Optic Cup Detection in Retinal
Images Acquired by Mobile Phone, 9th
International Symposium on Image and Signal Processing and Analysis (ISPA
2015), Zagreb, Croatia, pp. 195-200.
- R. Karimi, A. Hajdu: SRIdent: A novel
pipeline for real-time identification of species from high-throughput
sequencing reads in metagenomics and clinical diagnostic assays, 37th Annual International Conference of
the IEEE Engineering in Medicine and Biology Society (EMBC2015), Milano,
Italy, 2015, 6481-6484.
- J. Toth, H. Toman, A.
Hajdu: Improving the performance of an ensemble-based exudate detection
system using stochastic parameter optimization, 37th Annual International Conference of the IEEE Engineering in
Medicine and Biology Society (EMBC2015), Milano, Italy, 2015,
5243-5246.
- Mohammad Reza Azodinia, Andras Hajdu: A
recommender system that deals with items having an image as well as
quantitative features, IEEE 12th International Symposium on
Intelligent Signal Processing (WISP2015), 15-17 May 2015, Siena,
Italy, 1-6.
- Renato Besenczi, Kristof Szitha, Andras
Hajdu: A framework for distributed processing on an offline cell phone
network, 5th IEEE International
Conference on Cognitive Infocommunications (CogInfoCom 2014), Vietri
sul Mare, Italy, 2014, 257-262.
- Janos Toth, Laszló Kovacs, Balazs
Harangi, Csaba Kiss, Andras Mohacsi, Zoltan Orosz, Andras Hajdu: An Online
Benchmark System for Image Processing Algorithms, 5th IEEE International Conference on Cognitive Infocommunications
(CogInfoCom 2014), Vietri sul Mare, Italy, 2014, 377-382.
- Janos Toth, Laszló Kovacs, Balazs
Harangi, Csaba Kiss, Andras Mohacsi, Zoltan Orosz, Andras Hajdu: An Online
System for Algorithm Benchmarking, 5th
IEEE International Conference on Cognitive Infocommunications (CogInfoCom
2014), Vietri sul Mare, Italy, 2014, abstract, 383.
- Renato Besenczi, Kristof Szitha, Andras Hajdu: Distributed eye lesion detection on an
offline cell phone network, 5th IEEE
International Conference on Cognitive Infocommunications (CogInfoCom 2014),
Vietri sul Mare, Italy, 2014, abstract, 467.
- B. Harangi, A. Hajdu: Detection of
exudates in fundus images using a Markovian segmentation model, 36th Annual International Conference of
the IEEE Engineering in Medicine and Biology Society (EMBC2014),
Chicago, USA, 2014, 130-133.
- R. Karimi, L. Bellatreche, P. Girard, A.
Boukorca, A. Hajdu: BINOS4DNA: Bitmap indexes and NoSQL for identifying
species with DNA signatures through metagenomics samples, 5th International Conference on
Information Technology in Bio- and Medical Informatics (ITBAM 2014),
Munich, Germany, Lecture Notes in
Computer Science 8649,
2014, 1-14.
- J. Toth, L. Szakacs, A. Hajdu: Finding the
optimal parameter setting for an ensemble-based lesion detector, IEEE 21st International Conference on
Image Processing (ICIP2014), Paris, France, 2014, accepted.
- J. Toth, I. Papp, R. Tornai, I. Labancz,
E. H. Pocsai, A. Hajdu: Cognitive visualization for the design of complex
systems, 4th IEEE International
Conference on Cognitive Infocommunications (CogInfoCom 2013),
Budapest, Hungary, 2013, 363-368.
- Cs. Lamfalusi, D. Girus, K. Kruppa, J.
Toth, E. H. Pocsai, R. Kunkli, A. Hajdu, B. L. Balint: Extending the
visualization capabilities of a genome browser, 4th IEEE International Conference on Cognitive Infocommunications
(CogInfoCom 2013), Budapest, Hungary, 2013, 419-422.
- Cs. Lamfalusi, D. Girus, K. Kruppa, J.
Toth, E. H. Pocsai, R. Kunkli, A. Hajdu, B. L. Balint: Adding a scalable
visualization technique to the UCSC genome browser, 4th IEEE International Conference on Cognitive Infocommunications
(CogInfoCom 2013), Budapest, Hungary, 2013, 943 (demo paper).
- A. Hajdu, L. Hajdu, L. Kovacs, H. Toman:
Diversity Measures for Majority Voting in the Spatial Domain, 8th International Conference on Hybrid
Artificial Intelligence Systems (HAIS 2013), Lecture Notes in Artificial Intelligence 8073, 2013, 314-323.
- B. Antal, A. Hajdu: Evaluation of
Preprocessing Methods for Microaneurysm Detection, IEEE-EURASIP 8th Int'l Symposium
on Image and Signal Processing and Analysis, Trieste, Italy, 2013,
716-719.
- B. Nagy, B. Antal, A. Hajdu: Image
Database Clustering To Improve Exudate Detection In Color Fundus Images, IEEE-EURASIP 8th Int'l Symposium on Image and Signal Processing and Analysis,
Trieste, Italy, 2013, 720-724.
- B. Antal, B. Remenyik, A. Hajdu: An
Unsupervised Ensemble-based Markov Random Field Approach to Microscope
Cell Image Segmentation, 10th
International Conference on Signal Processing and Multimedia Applications
(SIGMAP 2013), Reykjavík, Iceland, 2013, 94-99.
- B. Harangi, A. Hajdu: Improving Automatic
Exudate Detection Based on the Fusion of the Results of Multiple Active
Contours, IEEE 10th International
Symposium on Biomedical Imaging (ISBI2013), San Francisco, CA, USA,
2013, 45-48.
- A. Hajdu, J. Tóth, Z. Pistar, B.
Domokos, Zs. Török: An ensemble-based collaborative framework to
support customized user needs, 3rd
IEEE International Conference on Cognitive Infocommunications (CogInfoCom
2012), Kosice, Slovakia, 2012, 285-290. PDF
- I. Lazar, A. Hajdu: Segmentation of
Vessels in Retinal Images Based on Directional Height Statistics, 34th Annual International Conference of
the IEEE Engineering in Medicine and Biology Society (EMBC2012), San
Diego, USA, 2012, 1458-1461.
- B. Antal, I. Lazar, A. Hajdu: An adaptive
weighting approach for ensemble-based detection of microaneurysms in color
fundus images, 34th Annual
International Conference of the IEEE Engineering in Medicine and Biology
Society (EMBC2012), San Diego, USA, 2012, 5955-5958.
- B. Harangi, A. Hajdu, I. Lazar: Automatic
Exudate Detection Using Active Contour Model and Regionwise
Classification, 34th Annual
International Conference of the IEEE Engineering in Medicine and Biology
Society (EMBC2012), San Diego, USA, 2012, 5951-5954.
- B. Nagy, B. Antal and A. Hajdu: Image
Database Clustering To Improve Microaneurysm Detection In Color Fundus
Images, 25th IEEE International Symposium
on Computer-Based Medical Systems (CBMS 2012), Rome, Italy, 2012, 1-6.
PDF
- B. Harangi, B. Antal and A. Hajdu:
Automatic Exudate Detection with Improved Naïve-Bayes Classifier, 25th IEEE International Symposium on
Computer-Based Medical Systems (CBMS 2012), Rome, Italy, 2012, 1-4. PDF
- B. Harangi, A. Hajdu: Improving the
accuracy of optic disc detection by finding maximal weighted clique of
multiple candidates of individual detectors, IEEE 9th International Symposium on Biomedical Imaging (ISBI2012),
Barcelona, Spain, 2012, 602-605. PDF
- H. Toman, L. Kovacs, A. Jonas, L. Hajdu,
A. Hajdu: Generalized weighted majority voting with an application to
algorithms having spatial output, 7th
International Conference on Hybrid Artificial Intelligence Systems (HAIS
2012), Salamanca, Spain, 2012, Volume Part II, Lecture Notes in Computer Science 7209, 2012, 56-67. PDF
- B. Antal, I. Lazar, A. Hajdu, Zs. Torok,
A. Csutak, T. Peto: Evaluation of the grading performance of an ensemble-based
microaneurysm detector, 33rd Annual
International Conference of the IEEE Engineering in Medicine and Biology
Society (EMBC2011), Boston, USA, 2011, 5943-5946. PDF
- B. Antal, A. Hajdu: An Ensemble-Based
Microaneurysm Detector for Retinal Images, IEEE 18th International Conference on Image Processing (ICIP2011),
Brussels, Belgium, 2011, 1621-1624. PDF
- Gy. Kovacs, A. Hajdu: Extraction of
vascular system in retina images using averaged one-dependence estimators
and orientation estimation in Hidden Markov Random Fields, IEEE 8th International Symposium on
Biomedical Imaging (ISBI2011), Chicago, USA, 2011, 693-696. PDF
- I. Lazar, A. Hajdu: Microaneurysm
detection in retinal images using a rotating cross-section based model, IEEE 8th International Symposium on
Biomedical Imaging (ISBI2011), Chicago, USA, 2011, 1405-1409. PDF
- Adrienne Csutak, Balint Antal, Istvan
Lazar, Tunde Peto, Zsolt Torok, Attila Biro, Andras Hajdu: Diabetic
retinopathy screening with computational support, European Association for Vision and Eye Research Congress (EVER
2011), Crete, Greece, abstract. PDF
- B. Nagy, B. Harangi, B. Antal, A. Hajdu:
Ensemble-based exudate detection in color fundus images, IEEE 7th International Symposium on Image and Signal Processing and
Analysis (ISPA2011), Dubrovnik, Croatia, 2011, 700 - 703. PDF
- Gy. Kovacs, A. Fazekas, A. Hajdu: Exponential
contrast maximization of intensity images, IEEE 7th International
Symposium on Image and Signal Processing and Analysis (ISPA2011),
Dubrovnik, Croatia, 2011, 139 - 142. PDF
- H. Toman, L. Kovacs, A. Jonas, L. Hajdu,
A. Hajdu: A generalization of majority voting scheme for medical image
detectors, 6th International
Conference on Hybrid Artificial Intelligence Systems (HAIS 2011),
Wroclaw, Poland, in Lecture Notes in
Artificial Intelligence 6679/2
(2011), 189-196. PDF
- B. Harangi, T. Csordas, A. Hajdu:
Detecting the excessive activation of the ciliaris muscle on thermal
images, IEEE 9th International
Symposium on Applied Machine Intelligence and Informatics (SAMI 2011),
Smolenice, Slovakia, 2011, 4 pages. PDF
- B. Antal, I. Lazar, A. Hajdu:
Mikroaneurizma-detektálás összetett rendszerrel, Képfeldolgozók és
Alakfelismerők Országos Konferenciája (KÉPAF),
Szeged, Hungary, 2011, in Hungarian, accepted. PDF
- L. Kovacs, B. Harangi, B. Nagy, R.J.
Qureshi, A. Hajdu: Gráf-alapú vakfolt és
sárgafolt detektálás retinaképeken, Képfeldolgozók és
Alakfelismerők Országos Konferenciája (KÉPAF),
Szeged, Hungary, 2011, in Hungarian, accepted. PDF
- I. Lazar, R.J. Qureshi, A. Hajdu: A novel
approach for the automatic detection of microaneurysms in retinal images, 6th IEEE International Conference on
Emerging Technologies (ICET), Islamabad, Pakistan, 2010, 193-197. PDF
- R. J. Qureshi, L. Kovacs, B. Nagy, B.
Harangi, A. Hajdu: Graph based detection of optic disc and fovea in
retinal images, 4th IEEE
International Workshop on Soft Computing Applications, Arad, Romania,
2010, 143-148. PDF
- B. Antal, I. Lázár, A.
Hajdu, Zs. Török, A. Csutak, T. Pető: A multi-level
ensemble-based system for detecting microaneurysms in fundus images, 4th IEEE International Workshop on Soft
Computing Applications, Arad, Romania, 2010, 137-142. PDF
- B. Antal, A. Hajdu: Improving
microaneurysm detection in color fundus images by using an optimal
combination of preprocessing methods and candidate extractors, 18th European Signal Processing
Conference (EUSIPCO 2010), Aalborg Denmark, 2010, 1224-1228. PDF
- B. Antal, A. Csutak, T. Peto, A. Hajdu: A
two-phase pre-filtering approach to the automatic screening of digital
fundus images, 5th International
Conference on Signal Processing and Multimedia Applications (SIGMAP 2010),
Athens, Greece, 2010, 155-158. PDF
- B. Antal, I. Lazar, A. Hajdu: An optimal
voting scheme for microaneurysm candidate extractors using simulated
annelaing, 5th International
Conference on Signal Processing and Multimedia Applications (SIGMAP 2010),
Athens, Greece, 2010, 80-87. PDF
- B. Harangi, R.J. Qureshi, A. Csutak, T.
Peto, A. Hajdu: Automatic detection of the optic disc using majority
voting in a collection of optic disc detectors, IEEE 7th International Symposium on Biomedical Imaging (ISBI 2010),
Rotterdam, The Netherlands, 2010, 1329-1332. PDF
- I. Csosz, A. Csutak, T. Peto, A. Hajdu: Well-fitting
curve models with few parameters for vascular systems on retinal images, Fifth Hungarian Conference on Computer
Graphics and Geometry, Budapest, SZTAKI, Hungary, 2010, 140-144. PDF
- H. Toman, A. Hajdu, J. Szakacs, D.
Hornyik, A. Csutak, T. Peto: Thickness-based binary morphological
improvement of distorted digital line intersections, Fifth Hungarian Conference on Computer Graphics and Geometry,
Budapest, SZTAKI, Hungary, 2010, 133-139. PDF
- R. Harangozo, P. Veres, A. Hajdu:
Subsampling strategies to improve learning-based retina vessel
segmentation, IEEE 16th
International Conference on Image Processing (ICIP2009), 7 – 11
November 2009, Cairo, Egypt, 3349 - 3352. PDF
- A. Hajdu, P. Veres, A. Tanacs, R.
Harangozo: Object subsampling strategies to improve computational
performance, IEEE 6th International
Symposium on Image and Signal Processing and Analysis (ISPA2009), 16
– 19 September 2009, Salzburg, Austria, 448 - 453. PDF
- B. Antal, A. Hajdu: A prefiltering approach
for an automatic screening system, IEEE
6th International Symposium on Intelligent Signal Processing (WISP2009),
26 – 28 August 2009, Budapest, Hungary, 265 - 268. PDF
- A. Hajdu, T. Peto, A. Csutak, Zs. Torok,
R. Harangozo, J. Hulvely, A. Biro: Extracting metadata from fundus images
for the screening of diabetic retinopathy, IEEE 6th International Symposium on Intelligent Signal Processing
(WISP2009), 26 – 28 August 2009, Budapest, Hungary, 259 - 263. PDF
- András Hajdu, Péter Veres,
Ioannis Pitas: Model-based subsampling: Theory, KÉPAF 2009, Budapest, Hungary (2009), 8 pages. PDF
- András Hajdu, Péter Veres,
Attila Tanács, Tünde Pető, Roland Harangozó,
Julianna Hülvely, Zsolt Török, Attila Biró, Adrienne
Csutak: Model-based subsampling: Applications, KÉPAF 2009, Budapest, Hungary (2009), 8 pages. PDF
- Balázs Harangi, Tibor
Csordás, András Hajdu: A ciliaris izom tulzott mukodesenek
vizsgalata szomatoinfraval keszitett kepeken, KÉPAF 2009, Budapest, Hungary (2009), 8 pages, in Hungarian. PDF
- András Hajdu, Ioannis Pitas:
Digital curve compression based on graph theory, KÉPAF 2009, Budapest, Hungary (2009), 10 pages. PDF
- András Hajdu,
Péter Veres, Attila Tanács, Ioannis Pitas: Simplification of
objects for faster registration, International
conference "Numerical geometry, grid generation and scientific
computing" (NUMGRID2008) & "Voronoi-2008"
workshop, (2008) Moscow, Russia, 8 pages. PDF
- András Hajdu, Tamás
Tóth and Péter Veres: Fast discrete approximations of
non-metrical distances, Fourth
Hungarian Conference on Computer Graphics and Geometry (2007), Budapest, Hungary, 164-171. PDF
- András Hajdu, Péter Veres
and Attila Tanács: Simplification of objects for adaptive matching
and visualization, Fourth Hungarian
Conference on Computer Graphics and Geometry (2007), Budapest,
Hungary, 157-163. PDF
- András Hajdu, Lajos Hajdu and
Attila Fazekas: Properties of natural ordering relation for octagonal
neighborhood sequences, 5th
International Symposium on Image and Signal Processing and Analysis (ISPA
2007), September 27-29, 2007, Istanbul,
Turkey,
168-173. PDF
- András Hajdu and Ioannis Pitas:
Compression optimized tracing of digital curves using graph theory, International Conference on Image
Processing (IEEE ICIP 2007) (2007), San Antonio, Texas,
USA, Vol.
VI, 453-456. PDF
- András Hajdu and Ioannis Pitas:
Content adaptive heterogeneous snakes, International
Conference on Image Processing (IEEE ICIP 2007) (2007), San Antonio, Texas,
USA, Vol.
I, 253-256. PDF
- András Hajdu, Charalambos Giamas,
Nikolas Vretos and Ioannis Pitas: Metadata description of thermal videos
for rescue operations, 8th
International Symposium on Signals, Circuits and Systems (IEEE ISSCS 2007)
(2007), Iasi,
Romania Vol 2, 4 pages. PDF
- András Hajdu, Charalambos Giamas
and Ioannis Pitas: Object simplification using skeleton-based weight
function, 8th
International Symposium on Signals, Circuits and Systems (IEEE ISSCS 2007)
(2007), Iasi, Romania, Vol 2, 4 pages. PDF
- András Hajdu, Charalambos Giamas
and Ioannis Pitas: Thermal video processing support for rescue operations,
KÉPAF6 (2007), Debrecen, Hungary, 207-211. PDF
- András Hajdu and Tamás
Tóth: Approximating non-metrical Minkowski distances in 2D, KÉPAF6 (2007), Debrecen, Hungary, 54-62. PDF
- András Hajdu and Ioannis Pitas:
Tracing on heterogeneous grids to improve concavity performance of snake
algorithms, International Symposium
on Signal Processing and its Applications (ISSPA 2007) (2007), Sharjah, United Arab Emirates (U.A.E.). PDF
- Stelios Asteriadis, Nikolaos Nikolaidis,
András Hajdu and Ioannis Pitas, A novel eye-detection algorithm
utilizing edge-related geometrical information, 14th European Signal Processing Conference (EUSIPCO06) (2006),
Florence, Italy. PDF
- András Hajdu, Athanasios Roubies
and Ioannis Pitas, Optimized chamfer matching for snake-based image
contour representations, IEEE
International Conference on Multimedia & Expo (ICME 2006) (2006), Toronto, Canada,
1017-1020. PDF
- Stelios Asteriadis, Nikolaos Nikolaidis,
András Hajdu and Ioannis Pitas, An Eye detection algorithm, 2nd IEEE-EURASIP
International Symposium on Control, Communications, and Signal Processing
(2006), Marrakech, Morocco. PDF
- Athanasios Roubies, András Hajdu
and Ioannis Pitas, Improving the performance of the GVF snake algorithm, 2nd IEEE-EURASIP
International Symposium on Control, Communications, and Signal Processing
(2006), Marrakech, Morocco. PDF
- András Hajdu and Lajos Hajdu: On
the lattice structure of subsets of octagonal neighborhood sequences in Zn,
Lecture Notes in Computer Science
4245 (2006), 211-222. PDF
- András Hajdu, Tamás
Tóth, Krisztián Veréb: Neighborhood sequences for
comparing similarity vectors in image retrieval, Summer University on Information Technology in Agriculture and Rural,
Proc. SU2006 (2006), Debrecen, Hungary, 118-123. PDF
- Attila Fazekas, András Hajdu,
István Sánta and Tamás Tóth: Neighborhood
sequences and their applications in the digital image processing, Lectures Notes in Computer Science 3691 (2005), 766-772. PDF
- András Hajdu, Lajos Hajdu and
Tamás Tóth, Properties and applications of Neighborhood
Sequences, Third Hungarian
Conference on Computer Graphics and Geometry, Budapest, (2005),
148-154. PDF
- András Hajdu, János Kormos,
Tamás Tóth and Krisztián Veréb, Szomszédsági
szekvenciák és alkalmazásaik a
képfeldolgozásban és képi
adatbázisokban, Informatika a
Felsőoktatásban 2005 (2005), Debrecen, Hungary, ISBN 963
472 909 6, (in Hungarian). PDF
- Miklós Emri, András Hajdu,
János Kormos and Zsolt Lencse, MEDIP - platformfüggetlen
szoftver keretrendszer orvosi képfeldolgozáshoz, Informatika a
Felsőoktatásban 2005 (2005), Debrecen, Hungary, ISBN 963
472 909 6, (in Hungarian). PDF
- András Hajdu, János Kormos,
Attila Lukács, Árpád Pányik, Csilla
Szabó, Péter Veres and Zoltán Zörgő:
Multipurpose 3D modeling for virtual clinical interventions, 2nd International Conference
on Computational Intelligence in Medicine and Healthcare (CIMED2005)
(2005), Lisbon, Portugal. PDF
- András Hajdu, Attila Fazekas and
Lajos Hajdu, Lattices of metrical neighborhood sequences, Joint Hungarian-Austrian Conference on
Image Processing and Pattern Recognition (HACIPPR 2005) (2005), Veszprém, Hungary, 143-147. PDF
- András Hajdu, Tamás
Tóth and Krisztián Veréb: Novel approach for
comparing similarity vectors in image retrieval, Joint Hungarian-Austrian Conference on Image Processing and
Pattern Recognition (HACIPPR 2005) (2005), Veszprém, Hungary,
87-94. PDF
- András Hajdu, Márton
István Hodnics, Kornél Kovács and Antal
Ungvári: Machine vision systems in human user environments – The Turk 2, Norwegian
Conference on Image Processing and Pattern Recognition (NOBIM 2004) (2004),
Stavanger, Norway, 58-61. PDF
- András Hajdu, János Kormos
and Zoltán Zörgő: Finding optimal distance functions for
statistical image segmentation, 6th World Congress of the
Bernoulli Society for Mathematical Statistics and Probability (2004), Barcelona, Spain, pp. 128 (extended
abstract). PDF
- András Hajdu, Sándor
Manó and Zoltán Zörgő: The "spiral cut"
technique for leg lengthening, 1st Hungarian Conference on
Biomechanics (2004), Budapest,
Hungary, 151-160. PDF
- András Hajdu, János Kormos
and Zoltán Zörgő: Statistical analysis of distance
functions for digital image processing applications, 6th
International Conference on Applied Informatics (2004), Eger-Noszvaj, Hungary, 499. PDF
- Attila Fazekas, Lajos Kollár,
Zoltán Zörgő, András Hajdu, János Kormos and
Krisztián Veréb: Intelligent urban traffic development
support system, 6th International Conference on Applied
Informatics (2004), Eger-Noszvaj, Hungary, 17-26. PDF
- Zoltán Csernátony,
András Hajdu, Sándor Manó and Zoltán
Zörgő: 3D modell készítése
ortopédiai műtétek szimulálásához,
KÉPAF4 (2004), Miskolc-Tapolca,
Hungary,
43-49, (in Hungarian). PDF
- András Hajdu and Lajos Hajdu:
Analytical and approximation properties of neighborhood sequences, KÉPAF4
(2004), Miskolc-Tapolca, Hungary, 97-105. PDF
- András Hajdu, Tamás
Tóth, Krisztián Veréb and Zoltán
Zörgő: Distance functions in multidimensional image processing
applications, KÉPAF4 (2004), Miskolc-Tapolca, Hungary,
106-111. PDF
- András Hajdu, Márton
István Hodnics, Kornél Kovács and Antal
Ungvári: Gépi látáson alapuló
rendszerek humán felhasználói környezetben
– A Török 2, KÉPAF4 (2004), Miskolc-Tapolca, Hungary, 112-117, (in Hungarian). PDF
- András Hajdu, Benedek Nagy and
Zoltán Zörgő: Indexing and segmenting colour images using
neighbourhood sequences, IEEE International Conference of Image
Processing (ICIP 2003) (2003), Barcelona, Spain, I/957-960. PDF
- Zoltán Zörgő,
András Hajdu, Sándor Manó, Zoltán
Csernátony and Szabolcs Molnár: Analyzis of a new femur
lengthening surgery, IEEE IASTED
International Conference on Biomechanics (BioMech 2003) (2003),
Rhodes, Greece, Biomechanics/34-38. PDF
- Attila Fazekas, András Hajdu and
Lajos Hajdu: Lattice of generalized neighbourhood sequences in nD, IEEE 3rd International Symposium on Image and Signal
Processing and Analysis (ISPA 2003) (2003), Rome,
Italy,
107-111. PDF
- Attila Fazekas and András Hajdu:
Extracting Feature Vectors for Character Recognition by Walsh
Transformation, KÉPAF 3 (2002), Domaszék, Hungary,
272-278. PDF
- András Hajdu and Benedek Nagy:
Approximating the Euclidean circle using neighbourhood sequences, KÉPAF
3 (2002), Domaszék,
Hungary,
260-271. PDF
- András Hajdu and Zoltán
Zörgő: Orvosi szoftver keretrendszer mûtéti
tervezéshez, KÉPAF 3 (2002), Domaszék, Hungary,
140-151, (in Hungarian). PDF
- András Hajdu and János
Kormos: A Debreceni Egyetem intézeteinek
együttműködése különböző
képfeldolgozási projektekben, Informatika a Felsőoktatásban 2002 (2002), Debrecen, Hungary, 773-780, (in Hungarian). PDF
- Attila Fazekas, Gábor Fazekas,
András Hajdu and János Kormos: A digitális
képfeldolgozás oktatásának eredményei
és néhány aktuális kérdése a
Debreceni Egyetemen, Informatika a
Felsőoktatásban 2002 (2002), Debrecen, Hungary, 758-765, (in Hungarian). PDF
- Attila Fazekas, András Hajdu and
Lajos Hajdu: Analyzing the structure of the set of neighbourhood
sequences, 5th International
Conference on Applied Informatics (2001), Eger-Noszvaj, Hungary,
41-48. PDF
- Attila Fazekas, András Hajdu and
Lajos Hajdu: Véges dimenziós szekvenciák
strukturális vizsgálata, KÉPAF 2 (2000), Noszvaj, Hungary, 29-32, (in Hungarian). PDF
- Attila Fazekas, András Hajdu and
Lajos Hajdu: Végtelen dimenziós szekvenciák
strukturális vizsgálata, KÉPAF 2 (2000), Noszvaj, Hungary, 33-36, (in Hungarian). PDF
- Attila Fazekas, András Hajdu and
Lajos Hajdu: Properties of generalized neighbourhood sequences in finite
dimension, 4th
International Conference on Applied Informatics (1999), Eger-Noszvaj, Hungary, 129-134. PDF
- Baráz Ákos, Fazekas Attila,
Hajdu András és Jónás Richárd: A gyakorlati feladatok szerepe a
digitális képfeldolgozás oktatásában
és megoldásukat támogató szoftverek, Informatika a
Felsôoktatásban'99 (1999), Debrecen, Hungary, 116-121, (in Hungarian). PDF
- Attila Fazekas and András Hajdu: Analysing
the noise sensitivity of skeletonization process, Conference of PhD Students in Computer Science (CS2)
(1998), Szeged, Hungary, 40 (extended abstract). PDF
Technical magazines
- András Hajdu and Zoltán
Zörgő: ANSYS for Virtual Surgery: FEA is a valuable tool
that aids doctors in orthopedic operations, ANSYS Solutions Summer 2004
(2004), 10-13. PDF
- Miklós Emri, András Hajdu,
János Kormos and Zoltán Zörgő: MEDIP
– Platformfüggetlen keretrendszer orvosi
képfeldolgozáshoz, Informatika és Menedzsment az
Egészségügyben (IME) III/5 (2004), 44-48, (in Hungarian). PDF
More presentations
- András Hajdu: Térbeli
szavazórendszerek alkalmazásokkal, Informatikai
Tanszékcsoport szemináriuma, (in Hungarian), Szeged, 2012.
- András Hajdu: Component Reuse in Ensemble-based Medical Image
Processing Applications, 12th Symposium on Programming Languages and
Software Tools - SPLST'11, Tallin, Estonia, Invited Lecture.
- Summer School on Image
Processing 2011, Szeged, Hungary, Invited Lecture.
- András Hajdu: Digital Image Processing in Complex Systems,
ICAI 2010 - 8th International Conference on Applied, Eger, Hungary,
Invited Lecture.
- András Hajdu: Alakzatok
egyszerűsítése célzott
mintavételezéssel, Informatikai Tanszékcsoport
szemináriuma, (in Hungarian), Szeged, 2008.
- András Hajdu, Sándor
Manó and Zoltán Zörgő: Csontos
műtéti technikák kidolgozása ANSYS
végeselem rendszerrel, 3. Végeselem Felhasználói Konferencia, BME,
Budapest, Hungary, 2004, (in
Hungarian).
- András Hajdu,
Szomszédsági szekvenciák és
műtétek számítógépes
tervezése, TRB-előadás, BME, Budapest, Hungary,
2003, (in Hungarian).
- András Hajdu, Medical Image
Processing and Finite Element Analysis, 11th Summer School
on Image Processing, Timisoara, Romania, 2003.
- Zoltán Csernátony,
András Hajdu, Sándor Manó and Zoltán
Zörgő: Egy új csontnyújtási
eljárás elemzése az Ansys-szal, Magyarországi ANSYS Felhasználói Konferencia,
Budapest, Hungary, 2003, (in
Hungarian).
- András Hajdu, as a member of the
IKTA-4 0006/2001 consortium: MEDIP Platformfüggetlen szoftver
keretrendszer orvosi képfeldolgozáshoz
(projektindító előadás), Budapest, Hungary,
2001, (in Hungarian).
- András Hajdu, Image Processing
Applications at the University of Debrecen, 9th Summer
School on Image Processing, Szeged, Hungary, 2001.
- Attila Fazekas and András Hajdu: A character recognition algorithm based
on Walsh transformation, 2nd
Conference of PhD Students in Computer Science, Miskolc, Hungary,
1999.
Software
- HTSFinder: Powerful
Pipeline of k-mers Counting and DNA Signature Discovery by Using Hadoop
and Hive as Applications of Parallel and Distributed Computing
- SRIdent: A Novel
Pipeline for Real-time Identification of Species from High-throughput
Sequencing Reads in Metagenomics and Clinical Diagnostic Assays
- DermDB: An Online
Application for Storing, Analyzing, and Sharing Dermatological Data