Hans Du Buf

Former Collaborator

Faculty

Position: Invited Associate Professor (Univ. of Algarve )

Group: Signal and Image Processing Group (SIPG)

Email: dubuf@ualg.pt

Phone: +351-289800900

Personal page: http://w3.ualg.pt/~dubuf/

FCT: J022306MR1O9

[1] NeuralDynamics – A neuro-dynamic framework for cognitive robotics: scene representations, behavioural sequences, and learning – EU [2011-04; 2015-03]

[2] NCOR – Neural Correlates of Object Recognition: Structure-function Correlations within the Visual Ventral Stream, Striatal and Limbic Circuits in Health and Disease – FCT [2008-10; 2010-09]

[3] Smart Vision – An Active Vision Aid for the Blind – FCT [2008-01; 2010-12]

[4] ISACS – Integrated System for Analysis and Characterization of the Seafloor – EU – FP4 [1996; 1999]

[5] AMOVIP – Advanced Modeling of Visual Information Processing – INCO-DC [01-1998; 01-2001]

[6] ADIAC – Automatic Diatom Identification and Classification – EU-FP4 [01-1998; 01-2001]

[1] Miguel Farrajota, João Rodrigues, Hans Du Buf "Human Action Recognition in Videos with Articulated Pose Information by Deep Networks", Pattern Analysis and Applications, pp. 12 , 2018

[2] Jaime Martins, R. L. Lam, João Rodrigues, Hans Du Buf "Expression-invariant face recognition using a biological disparity energy model", Neurocomputing Volume 297, Pages 82-93, 2018

[3] Mário Saleiro, Kasim Terzić, João Rodrigues, Hans Du Buf "BINK: Biological Binary Keypoint Descriptor", Biosystems, Vol. 162, pp. 147-156, December, 2017

[4] Jaime Martins, João Rodrigues, Hans Du Buf "Proto-object categorisation and local gist vision using low-level spatial features", Biosystems, Vol. 135, pp. 35–49, September, 2015 - PDF

[5] Jaime Martins, João Rodrigues, Hans Du Buf "Luminance, Colour, Viewpoint and Border Enhanced Disparity Energy Model", PLoS ONE 10(6): e0129908, 2015 - PDF

[6] M. Serrao, S. Shahrabadi, M. Moreno, J. Jose, J. Rodrigues, João Rodrigues, Hans Du Buf "Computer vision and GIS for the navigation of blind persons in buildings", International Journal on Universal Access in the Information Society, Vol. 14, Issue 1, pp. 67-80, March, 2015 - PDF

[7] M. Serrao, João Rodrigues, Hans Du Buf "Navigation framework using visual landmarks and a GIS", Procedia Computer Science, vol. 27, pp. 28–37,, 2014

[8] Hans Du Buf, J. Barroso, João Rodrigues, H. Paredes, M. Farrajota, H. Fernandes, J. Jose, V. Teixeira, M. Saleiro "The SmartVision navigation prototype for blind users", JDCTA: International Journal of Digital Content Technology and its Applications, Vol. 5, No. 5, pp. 351 - 361. doi : 10.4156/jdcta.vol5.issue 5.39, 2011

[9] J. Jose, M. Farrajota, João Rodrigues, Hans Du Buf "The SmartVision local navigation aid for blind and visually impaired persons", JDCTA: International Journal of Digital Content Technology and its Applications, Vol. 5, No. 5, pp. 362 - 375. doi : 10.4156/jdcta.vol 5.issue 5.40, 2011

[10] Hans Du Buf, João Rodrigues "Multi-scale lines and edges in V1 and beyond: brightness, object categorization and recognition, and consciousness", BioSystems, V.ol. 95, Issue 3, pp. 206-226, 2009

[11] Hans Du Buf, João Rodrigues "A cortical framework for invariant object categorization and recognition", Cognitive Processing, 10 (3), pp. 243-261, 2009

[12] Hans Du Buf, João Rodrigues "Image Morphology: from Perception to Rendering", Image - Journal of Interdisciplinary Image Science, Special Edition: Computational Visualistics and Picture Morphology, February, Vol. 5, pp. 19, 2007

[13] Hans Du Buf "Improved grating and bar cell models in cortical area V1 and texture coding", Image and Vision Computing, Elsevier, Vol. 25, Issue 6, pp. 873-882 , 2007

[14] Daniel Almeida, Hans Du Buf, João Rodrigues, J. Carvalho, V. Brito "Painterly rendering using human vision", VIRTUAL, Advances in Computer Graphics, AICG06, pp. 12, 2006

[15] Hans Du Buf, João Rodrigues "Multi-scale keypoints in V1 and beyond: object segregation, scale selection, saliency maps and face detection", BioSystems, 86(1-3):75-90, Elsevier, 2006

[16] D. G. Mann, S. M. McDonald, M. M. Bayer, S. J. M. Droop, V. A. Chepurnov, Robert Loke, A. Ciobanu, Hans Du Buf "The Sellaphora pupula model species complex (Bacillariophyceae): morphometric analysis, ultrastructure and mating data provide evidence for five new species", Phycologia, 43(4), 459-482, 2004

[17] Robert Loke, Hans Du Buf "Quadtree-guided 3D interpolation of irregular sonar data sets", IEEE Journal of Oceanic Engineering, 29 (2), 457-471, 2004

[18] Robert Loke, Hans Du Buf, M. M. Bayer, D. G. Mann "Diatom classification in ecological applications", Pattern Recognition 37(6), pp 1283-1285, 2004

[19] Robert Loke, Hans Du Buf "Linking matched cubes: efficient triangulation of 18-connected object boundaries", Submitted to: The Visible Computer (2nd version 2004), 2003

[20] Hans Du Buf, M. M. Bayer, H. Bunke, A. Ciobanu, G. Cristobal, S. Fischer, J. Huerlimann, A. C. Jalba, S. Juggins, M. G. Kelly, Robert Loke, B. Ludes, D. G. Mann, J. L. Pech-Pacheco, J. B. T. M. Roerdink, Luís Santos, Hamid Shahbazkia, R. L. Telford, E. R. Urbach, M. A. Westenberg, M. H. F. Wilkinson "Automatic diatom analysis: from slide scanning to species identification", Hydrobiologia, 2002

[21] Robert Loke, Hans Du Buf "3D data segmentation by means of adaptive boundary refinement in an octree", Pattern Recognition , 2002

[22] Robert Loke, M. M. Bayer, D. G. Mann, Hans Du Buf "Diatom contour classification by curvate of convex and concave segments", Pattern Recognition, 2002

[23] Luís Santos, Hans Du Buf "Vision-inspired wavelet-based contour and texture methods in diatom recognition", Submitted to: Electronic Letters on Computer Vision and Image Analysis (ELCVIA), 2002

[24] Luís Santos, Hans Du Buf "Improved grating and bar cell models in diatom analysis", Submitted to: Image and Vision Computing, 2001

[25] J. H. van Deemter, Hans Du Buf "Simultaneous detection of lines and edges using compound Gabor filters", Int. J. Pattern Recogn. and Artif. Intelligence, Vol 14, pp 757-777, 2000

[26] João Rodrigues, Robert Loke, Hans Du Buf "Segmentation of 3D data", TecnoVisao, EST/UALG, No 10, pp 5-8 (in Portuguese), 2000

[27] João Rodrigues, Hans Du Buf "Segmentation of acoustic images", Tecno Visao, EST/UALG, No. 9, pp 19-22 (in Portuguese), 1999

[28] Hans Du Buf, S. Fischer "Modeling brightness perception and syntactical image coding", Optical Engineering 34, pp 1900-1911, 1995

[29] J. Bigun, Hans Du Buf "N-folded symmetries by complex moments in Gabor space and their application to unsupervised texture segmentation", IEEE Trans. Pattern Analysis and Machine Intelligence, PAMI-16, pp 80-87. , 1994

[30] Hans Du Buf "Ramp edges, Mach bands, and the functional significance of the simple cell assembly", Biol. Cybernet. 70, pp 449-461, 1994

[31] J. Bigun, Hans Du Buf "Symmetry interpretation of complex moments and the local power spectrum", Journal of Visual Communication and Image Representation 6, pp 154-163, 1993

[32] Hans Du Buf "Responses of simple cells: events, interferences, and ambiguities", Biol. Cybernet. 68, pp 321-333, 1993

[33] J. Bigun, Hans Du Buf, S. Raboisson "Unsupervised segmentation of aerial images", Revue Technique Thomson-CSF 25, pp 193-211, 1993

[34] T. R. Reed, Hans Du Buf "A survey of recent texture feature extraction and segmentation techniques", Computer Vision, Graphics, and Image Processing: Image Understanding 57, pp 359-372, 1993

[35] Hans Du Buf "Abstract processes in texture discrimination", Spatial Vision 6, pp 221-242, 1992

[36] Hans Du Buf "Brightness versus apparent contrast 2: Large-field asymmetry", Spatial Vision 6, pp 243-263, 1992

[37] Hans Du Buf "Brightness versus apparent contrast 1: Incremental and decremental disks with varying diameter", Spatial Vision 6, pp 159-182, 1992

[38] Hans Du Buf "Modeling spatial vision at the threshold level", Spatial Vision 6, pp 25-60, 1992

[39] Hans Du Buf "Brightness versus apparent contrast 3: Blurred disks and concentric cosine gratings", Spatial Vision, 6, pp 265-284, 1992

[40] Hans Du Buf, P. Heitkamper "Texture features based on Gabor phase", Signal Processing 23, pp 227-244, 1991

[41] Hans Du Buf "Detection symmetry and asymmetry", Spatial Vision 5, pp 189-203, 1991

[42] Hans Du Buf "Gabor phase in texture discrimination", Signal Processing 21, pp 221-240, 1990

[43] Hans Du Buf, T. G. Campbell "A quantitative comparison of edge-preserving smoothing techniques", Signal Processing 21, pp 289-301, 1990

[44] Hans Du Buf, M. Spann, M. Kardan "Texture feature performance for image segmentation", Pattern Recognition 23, pp 291-309, 1990

[45] M. Spann, C. Horne, Hans Du Buf "The detection of thin structures in images", Pattern Recognition Letters 10, pp 175-179, 1989

No publications found for author "cap-johannesmartinushubertina"

[1] Hans Du Buf "Automatic diatom identification", du Buf, H. and Bayer, M. M. (eds), World Scientific, Series in Machine Perception and Artificial Intelligence, Vol. 51 , pp 316, 2002

[2] Robert Loke, Hans Du Buf "Identification by curvature of convex and concave segments", Chapter 8 in : Automatic diatom identification, pp 141-166, Hans du Buf and M. M. Bayer (eds), 2002

[3] A. Ciobanu, Hans Du Buf "Contour profiling and Legendre Polynomials", Chapter 9 in: Automatic diatom identification , 167-186 , Hans du Buf and M. M. Bayer (eds), 2002

[4] Luís Santos, Hans Du Buf "Identification by Gabor features", Chapter 10 in: Automatic diatom identification, du Buf, H. and Bayer, M. M. (eds), World Scientific, pp. 187-220 , 2002

[5] Hans Du Buf "Modeling brightness perception", Chapter 2 in: Vision models and applications to image and video processing, C.J. van den Branden Lambrecht (ed.), Kluwer Academic, pp 21-36, 2001

[6] J. H. van Deemter, Hans Du Buf "Line and edge detection by curvature-adaptive neural networks", Chapter 10 in: Plausible neural networks for biological modelling, J.E. Vos and H.A.K. Mastebroek (eds), Kluwer Academic, pp 219-239, 2001

[7] Hans Du Buf "Introduction to modeling brightness perception", Chapter 2 in: Vision models and applications to image and video processing, C.J. van den Branden Lambrecht (ed.), Kluwer Academic, 2001

[8] Hans Du Buf, Hamid Shahbazkia "UALG Vision Laboratory", Chapter 10 in: Pattern recognition advances in iberoamerica, A. Grau (ed.), Int. Association for Pattern Recognition, pp 89-93, 2000

[9] Hans Du Buf, Hamid Shahbazkia "Pattern Recognition Advances", Iberoamerica, Chapter 10, pp 89-93, A. Grau (ed), IAPR, 2000

[10] Hans Du Buf "From semantic texture attributes to a syntactic analysis in Gabor space", In: Visual Search II, D. Brogan, A. Gale, K. Carr (eds), Taylor and Francis Ltd, London, Chapter 9, pp 139-148, 1993

[11] Hans Du Buf, M. Spann "Visual versus machine performance in boundary detection between textured regions", In: Visual Search, D. Brogan (ed.), Taylor and Francis Ltd, London, Chapter 25, pp 237-248, 1990

[1] M. Farrajota, João Rodrigues, Hans Du Buf "Using Multi-Stage Features in Fast R-CNN for Pedestrian Detection", Proc. of DSAI 2016 - Software Development and Technologies for Enhancing Accessibility and Fighting Info-exclusion, UTAD, Vila Real, Portugal, 2016

[2] Miguel Farrajota, João Rodrigues, Hans Du Buf "Human Pose Estimation Using Wide Stacked Hourglass Networks", Proc. of RecPad 2016 - 22nd edition of the Portuguese Conference on Pattern Recognition, Aveiro, Portugal, pp. 89, 2016

[3] Miguel Farrajota, João Rodrigues, Hans Du Buf "Pedestrian Detection Using Multi-Stage Features in Fast R-CNN", Proc. of RecPad 2016 - 22nd edition of the Portuguese Conference on Pattern Recognition, Aveiro, Portugal, 2016

[4] M. Saleiro, Miguel Farrajota, Kasim Terzić, S. Krishna, João Rodrigues, Hans Du Buf "Biologically inspired vision for human-robot interaction", Proc. of HCI International 2015 - 17th International Conference on Human-Computer Interaction, Los Angeles, USA, August , 2015

[5] Kasim Terzić, Hans Du Buf "Shape Detection with Nearest Neighbour Contour Fragments", BMVC 2015, AC, UK, September , 2015 - PDF

[6] M. Saleiro, Kasim Terzić, D. Lobato, João Rodrigues, Hans Du Buf "Biologically Inspired Vision for Indoor Robot Navigation", Proc. of ICIAR 2014 - 11th International Conference, Vilamoura, Portugal, Part II, pp. 469-477, 2014 - PDF

[7] Kasim Terzić, Hans Du Buf "Instance-based Object Recognition with Simultaneous Pose Estimation Using Keypoint Maps and Neural Dynamics", Artificial Neural Networks and Machine Learning – ICANN 2014 Lecture Notes in Computer Science, volume 8681, pp 451-458 , 2014 - PDF

[8] Kasim Terzić, Hans Du Buf "An Efficient Naive Bayes Approach to Category-Level Object Detection", Proc. ICIP 2014 - IEEE International Conference on Image Processing, Paris, France pp. 1658-1662, October, 2014 - PDF

[9] M. Farrajota, João Rodrigues, Hans Du Buf "Region segregation by linking keypoints tuned to colour", Proc. of ICPRAM 2014 - International Conference on Pattern Recognition Applications and Methods, Angers, France, 2014

[10] M. Farrajota, João Rodrigues, Hans Du Buf "Keypoint clustering using cortical colour opponency", Proc. of RecPad 2013 - 19th edition of the Portuguese Conference on Pattern Recognition, Lisbon, Portugal, 2013

[11] Kasim Terzić, D. Lobato, M. Saleiro, J. Martins, M. Farrajota, João Rodrigues, Hans Du Buf "Biological Models for Active Vision: Towards a Unified Architecture", Proc. of ICVS 2013 - 9th International Conference, St. Petersburg, Russia. In M. Chen, B. Leibe, & B. Neumann (Eds.), Computer Vision Systems SE - 12, vol. 7963, pp. 113-122. Springer Berlin Heidelberg. doi: 10.1007/978-3-642-39402-7_12, 2013

[12] João Rodrigues, Hans Du Buf, Kasim Terzić "Real-Time Object Recognition Based on Cortical Multi-scale Keypoints", Proc. of IbPRIA 2013 - 6th Iberian Conference on Pattern Recognition and Image Analysis, Madeira, Portugal, 2013

[13] S. Shahrabadi, João Rodrigues, Hans Du Buf "Detection of Indoor and Outdoor Stairs", Proc. of IbPRIA 2013 - 6th Iberian Conference on Pattern Recognition and Image Analysis, Madeira, Portugal, 2013

[14] Hans Du Buf, Kasim Terzić, João Rodrigues "Phase-differencing in stereo vision: solving the localisation problem", Proc. of BIOSIGNALS 2013 - 6th International Conference on Bio-inspired Systems and Signal Processing, Barcelona, Spain, pp. 254-263, 2013

[15] M. Saleiro, B. Carmo, João Rodrigues, Hans Du Buf "A low-cost classroom-oriented educational robotics system", Proc. of ICSR 2013 - 5th International Conference on Social Robotics, Bristol, UK. In G. Herrman, M. Pearson, A. Lenz et al. (Eds.), Social Robotics SE 8, vol. 8239, pp. 74-83, Springer International Publishing. doi: 10.1007/978-3-319-02675-6_8, 2013

[16] Kasim Terzić, João Rodrigues, Hans Du Buf "Fast cortical keypoints for real-time object recognition", Proc. of ICIP 2013 - IEEE International Conference on Image Processing, Melbourne, Australia, 2013

[17] M. Saleiro, M. Farrajota, Kasim Terzić, João Rodrigues, Hans Du Buf "A biological and realtime framework for hand gestures and head poses", HCI 2013 - 15th International Conference on Human-Computer Interaction, Las Vegas, Nevada, USA, 2013

[18] João Rodrigues, Hans Du Buf "A cortical framework for scene categorization", Proc. of VISAPP 2011 - International Conference on Computer Vision Theory and Applications, 2011

[19] M. Farrajota, J. Martins, João Rodrigues, Hans Du Buf "Disparity energy model with keypoint disparity validation", Proc. of RecPad 2011 - 17th Portuguese Conference on Pattern Recognition, Porto, Portugal, 2011

[20] J. Martins, João Rodrigues, Hans Du Buf "Disparity energy model using a trained neuronal population", Proc. of ISSPIT 2011 - IEEE International Symposium on Signal Processing and Information Technology, Bilbao, Spain, 2011

[21] M. Farrajota, João Rodrigues, Hans Du Buf "Optical flow by multi-scale annotated keypoints: A biological approach", Proc. of BIOSIGNALS 2011 - International Conference on Bio-inspired Systems and Signal Processing, Rome, Italy, 2011

[22] D. Castells, João Rodrigues, Hans Du Buf "Obstacle detection and avoidance on sidewalks", Proc. of VISAPP 2010 - International Conference on Computer Vision Theory and Applications, Angers, France, 2010

[23] R. Sousa, João Rodrigues, Hans Du Buf "Recognition of facial expressions by cortical multi-scale line and edge coding", Proc. of ICIAR 2010 - International Conference on Image Analysis and Recognition, Povoa do Varzim, Portugal, 2010

[24] J. Jose, M. Farrajota, João Rodrigues, Hans Du Buf "A vision system for detecting paths and moving obstacles for the blind", Proc. of DSAI 2010 - International Conference on Software Development for Enhancing Accessibility and Fighting Info-exclusion, Oxford, United Kingdom, 2010

[25] Hans Du Buf, J. Barroso, João Rodrigues, H. Paredes, M. Farrajota, H. Fernandes, J. Jose, V. Teixeira, M. Saleiro "The SmartVision navigation prototype for the blind", Proc. of DSAi 2010 - International Conference on Software Development for Enhancing Accessibility and Fighting Info-exclusion, Oxford, United Kingdom, 2010

[26] M. Saleiro, João Rodrigues, Hans Du Buf "Cognitive robotics: a new approach to simultaneous localisation and mapping", Proc. of RecPad 2010 - 16th Portuguese Conference on Pattern Recognition, Vila Real, Portugal, 2010

[27] Hans Du Buf, João Rodrigues, M. Saleiro "Automatic hand or head gesture interface for individuals with motor impairments, senior citizens and young children", Proc. of DSAI 2009 - International Conference on Software Development for Enhancing Accessibility and Fighting Info-exclusion, Lisbon, Portugal, pp. 165-171, 2009

[28] Hans Du Buf, João Rodrigues, M. Farrajota "Multi-scale keypoint annotation – a biological approach", Proc. of RecPad 2009 - 15th edition of the Portuguese Conference on Pattern Recognition, Aveiro, Portugal, 2009

[29] Hans Du Buf, João Rodrigues "Object segregation and local gist vision using low-level geometry", Proc. of ECVP 2009 - 32nd European Conference on Visual Perception, Regensburg, Germany. Perception Vol. 38 Suppl, pp. 41-42, 2009

[30] R. Sousa, João Rodrigues, Hans Du Buf "Correlates of facial expressions in the primary visual cortex", Proc. of BCCN 2009 - Bernstein Conference on Computational Neuroscience, Frankfurt am Main, Germany, 2009

[31] Roberto Lam, Hans Du Buf "Invariant categorization of poligonal objects using multi-resolution signatures", Proc. of KDIR 2009 - International Conference on Knowledge Discovery and Information Retrieval, Funchal, Madeira, 2009

[32] Hans Du Buf, João Rodrigues, J. Martins "Focus of Attention and Region Segregation by Low-Level Geometry", Proc. of VISAPP 2009 - 4th International Conference Computer Vision Theory and Applications, Lisbon, Portugal, Vol. 2, pp. 267-272, 2009

[33] Hans Du Buf, João Rodrigues, J. Martins "Region segregation and saliency using colour information", Proc. of RecPad 2008 - 14th Portuguese Conference on Pattern Recognition, Coimbra, Portugal, 2008

[34] Daniel Almeida, Roberto Lam, Hans Du Buf, João Rodrigues "An integrated framework for combining gist vision with object segregation, categorisation and recognition", Proc. of ECVP 2008 - 31th European Conference on Visual Perception, Utrecht, The Netherlands, 2008

[35] Hans Du Buf, João Rodrigues "Brightness perception: one simple model explains most if not all effects", Proc. of ECVP 2008 - 31th European Conference on Visual Perception, Utrecht, The Netherlands, 2008

[36] Daniel Almeida, Hans Du Buf, João Rodrigues, J. Carvalho, V. Brito "Fine arts edutainment: the amateur painter", Proc. of GRAPP 2008 - International Conference on Computer Graphics Theory and Applications, Funchal, Portugal, pp 262-267, 2008 - PDF

[37] Hans Du Buf, João Rodrigues, J. Cunha "Face normalization using multi-scale cortical keypoints", Proc. of RECPAD 2007 - 13th Portuguese Conference on Pattern Recognition, Lisbon, Portugal, pp. 2, 2007

[38] Hans Du Buf, João Rodrigues "Invariant multi-scale object categorisation and recognition", Proc. of IbPRIA 2007 - 3rd Iberian Conference on Pattern Recognition and Umage Analysis, Girona, Spain. Springer, LNCS 4477, pp. 459-466 , 2007

[39] Hans Du Buf, João Rodrigues "Cortical object segregation and categorization by multi-scale line and edge coding", Proc. of VISAPP2006 - International Conference on Computer Vision, Theory and Applications, Setubal, Portugal, Vol. 2, pp. 5-12, 2006

[40] Daniel Almeida, V. Brito, J. Carvalho, João Rodrigues, Hans Du Buf "Perception-based painterly rendering: functionality and interface design", Proc. SIACG2006 - 3rd Ibero-American Symposium Computer Graphics, Santiago de Compostela, Spain. P. Brunet et al. (eds), the Eurographics Association, pp. 53-60, 2006

[41] Roberto Lam, João Rodrigues, Hans Du Buf "Looking through the eyes of the painter: from visual perception to non-photorealistic rendering", Proc. WSCG2006 - 14th International Conference Computer Graphics, Visualization and Computer Vision, Plzen, Czech Republic, pp. 147-154, 2006

[42] Hans Du Buf, Robert Loke, F. W. Jansen "A background-priority discrete boundary triangulation method", Proc. WSCG2006 - 14th International Conference on Computer Graphics, Visualization and Computer Vision, Plzen, Czech Republic, pp. 61-68, 2006

[43] Hans Du Buf, João Rodrigues "Face segregation and recognition by cortical multi-scale line and edge coding", Proc. PRIS2006 - 6th International Workshop on Pattern Recognition in Information Systems, Paphos, Cyprus, pp. 5-14, 2006

[44] Daniel Almeida, Hans Du Buf, João Rodrigues "Object categorisations using templates constructed from multi-scale line and edge representations", Workshop on Visual Categorisation and Image Management Systems, University of Sunderland, UK, 2006

[45] António Pascoal, Daniel Almeida, Luís Sebastião, Hans Du Buf, R. S. Santos, A. Colaco, F. Cardigos "Quest for high-resolution mapping in deep-sea environments", 11th International Deep-Sea Biology Symposium, Southampton, UK, 2006

[46] Hans Du Buf, João Rodrigues "Face recognition by cortical multi-scale line and edge representations", Proc. ICIAR2006 - International Conference on Image Analysis and Recognition, Povoa do Varzim, Portugal, Springer LNCS 4142, pp. 329-340, 2006

[47] João Rodrigues, Hans Du Buf "Multi-scale cortical keypoint representation for attention and object detection", Proc. of IbPRIA2005 - 2nd Iberian Conference on Pattern Recognition and Image Analysis, Springer LNCS 3523, pp. 255-262, Estoril, Portugal, 2005

[48] Daniel Almeida, Robert Loke, Hans Du Buf "Polygon optimisation for the modelling of planar range data", Proc. of IbPRIA2005 - 2nd Iberian Conference on Pattern Recognition and Image Analysis, , Springer LNCS 3523, pp. 128-136, Estoril, Portugal, 2005

[49] Roberto Lam, João Rodrigues, Hans Du Buf "Artistic rendering of the visual cortex", Proc. of ARTECH2005 - 2nd Workshop Luso-Galaico de Artes Digitais, pp. 65-78, Vila Nova de Cerveira, Portugal, 2005

[50] João Rodrigues, Hans Du Buf "Multi-scale keypoint hierarchy for Focus-of-Attention and object detection", Proc. of ECVP2005 - 28th European Conference on Visual Perception, Perception Vol. 34, pp. 240, Coruna, Spain, 2005

[51] Hans Du Buf "Modelfest and contrast-interrelation-function data predicted by a retinal model", Proc. of ECVP2005 - 28th European Conference on Visual Perception, Perception Vol. 34, pp. 240, Coruna, Spain, 2005

[52] João Rodrigues, Daniel Almeida, Roberto Lam, Hans Du Buf "Building the what and where systems: multi-scale lines, edges and keypoints", Proc. of 7WAV2005 - Workshop on Active Vision VII, University of Reading, pp. 8, UK, 2005

[53] João Rodrigues, Hans Du Buf "Multi-scale keypoints in V1 and face detection", Proc. of BV&AI2005 - 1st International Symposium on Brain, Vision and Artificial Intelligence, Springer LNCS 3704, pp. 205-214, Naples, Italy, 2005

[54] João Rodrigues, Hans Du Buf "Improved line/edge detection and visual reconstruction", Proc. of 13EPCG2005 - 13th Portuguese Computer Graphics Meeting, pp. 179-184, Vila Real, Portugal, 2005

[55] Daniel Almeida, Hans Du Buf "SeaView: a seafloor and habitat visualizer", Proc. of 13EPCG2005 - 13th Portuguese Computer Graphics Meeting, pp. 219-222, Vila Real, Portugal, 2005

[56] João Rodrigues, Hans Du Buf "Concepcao de um Sistema Multi-Agente para a Resolucao de Problemas de Cadeias de Producao-Distribuicao", 5ª Conferencia da Associacao Portuguesa de Sistemas de Informacao, CAPSI, Lisboa, Portugal, 2005

[57] Robert Loke, Hans Du Buf "Small CPU times and fast interactivity in sonar seabottom surveys", Proc. 2nd International Symposium on 3Data Processing, Visualization and Transmission, 3DPVT, Thessaloniki, Greece, 2004

[58] P. M. Sarradin, J. Sarrazin, J.F. Cadiou, K. Olu, D. Desbruyeres, V. Rigaud, J. F. Drogou, F. Lecornu, J. F. Rolin, R. Vuillemin, M. A. Cambon-Bonavita, E. Sauter, K. von Juterzenka, A. Boetius, R. Serrao Santos, A. Colaco, António Pascoal, Paulo Oliveira, B. Shillito, F. Zal, A. Schultz, P. Taylor, D. Lane, Robert Loke, Hans Du Buf, C. Waldmann, A. Cormack, L. Sanfilippo, M. Masson "Extreme Ecosystem Studies in the Deep Ocean -Technological Developments: The EXOCET/D Project FP6-GOCE-CT-2003-505342", Proc. of the 14th International Offshore and Polar Engineering Conference, Toulon, France, Vol. 1, pp. 738-746, 2004

[59] P. M. Sarradin, J. Sarrazin, K. Olu, E. Sauter, R. Serrao Santos, António Pascoal, B. Shillito, F. Zal, A. Schultz, D. Lane, Hans Du Buf, C. Waldmann, A. Cormack, L. Sanfilippo, M. Masson "Extreme ecosystem studies in the deep ocean: Technological Developments", Eurocean 2004, Galway, Ireland, 2004

[60] João Rodrigues, Hans Du Buf "A vision frontend with a new disparity model", Early Cognitive Vision Workshop, ECOVISION, Isle of Skye, Scotland, 2004

[61] João Rodrigues, Hans Du Buf "Visual cortex frontend: integrating lines, edges, keypoints and disparity", Proc. ICIAR 2004 - International Conference on Image Analysis and Recognition, Porto, Portugal, Springer LNCS 3211, pp. 664-671, 2004

[62] Robert Loke, Hans Du Buf "Segmentation of range images in a quadtree", Proc. IbPRIA2003 - 1st Iberian Conference on Pattern Recognition and Image Analysis, Mallorca, Spain. Springer LNCS Vol 2652, pp. 428-436, 2003

[63] Paulo Monica de Oliveira, Hans Du Buf "SPMD image processing on Beowulf clusters: directives and libraries", Workshop on parallel and distributed image processing, video processing, and multimedia (PDIVM'03); IEEE Int. Parallel and Distributed Processing Symp (IPDPS), Nice, France (pdf on IEEE server), 2003

[64] Hans Du Buf "High-cost cortical image processing on low-cost clusters", Proc. Symp. on Biologically-inspired machine vision, AISB (Artificial Intelligence and Stimulation of Behaviour) Convention, Univ. of Wales, Aberystwyth, pp 114-127, 2003

[65] Robert Loke, Hans Du Buf "Interactively visualizing 18-connected object boundaries in huge data volumes", Proc. DGCI2003 - 11th International Conference on Discrete Geometry for Computer Imagery, Naples, Italy. Springer LNCS Vol. 2886, pp 544-553, 2003

[66] Hans Du Buf, U. Bobinger "In search of the Holy Grail: a unified special detection model", 25th European conference on Visual Perception, Glasgow. Perception Vol. 31, Supplement, pp. 137, 2002

[67] Robert Loke, M. M. Bayer, D. G. Mann, Hans Du Buf "Diatom recognition by convex and concave contour curvature", Proc. MTS/IEEE Conference OCEANS´02, Biloxi, Mississippi, pp. 2457-2465, 2002

[68] Luís Santos, Hans Du Buf "Computational cortical cell models for continuity and texture", Biologically Motivated Computer Vision Workshop, Tuebingen, 2002

[69] Luís Santos, Hans Du Buf "Pattern detection using cortical cell models", 12th Portuguese Conference on Pattern Recognition, Aveiro. 6 pages, only on CDROM, 2002

[70] Robert Loke, Hans Du Buf "Diatom contour classification by curvature of convex and concave segments", 12th Portuguese Conference on Pattern Recognition, Aveiro. 6 pages, only on CDROM, 2002

[71] Luís Santos, Hans Du Buf "Improved grating and bar cell models", Proc. 7th Neural Computing in Psychology Worksh., Brighton, UK. To be published as a book chapter, World Scientific, 2001

[72] Roberto Lam, Robert Loke, Hans Du Buf "Smoothing and reduction of triangle meshes", Proc. 10th Portuguese Computer Graphics Meeting, Lisbon, pp 97-105 (in Portuguese), 2001

[73] Robert Loke, Hans Du Buf "Highlighting pipelines offshore Norway: visualization and quantitative analisis", Proc. MTS/IEEE Conf. Oceans 2001, Honolulu (Hawaii), Nov 6-8, pp 2688-2695, 2001

[74] M. Bayer, M. Pullan, D. Mann, S. Juggins, A. Ciobanu, Luís Santos, Hans Du Buf, S. Fischer, H. Bunke, M. Wilkinson, J. Roerdink, J. Pech-Pacheco, G. Cristobal, V. Cirimele, B. Ludes "ADIAC: Using computer vision technology for automatic diatom identification", Proc. 16th Int. Diatom Symp., A. Economou-Amilli (ed.), Univ. of Athens, Greece, pp 537-562, 2001

[75] X. Jiang, K. Bowyer, Y. Morioka, S. Hiura, K. Sato, S. Inokuchi, M. Bock, C. Guerra, Robert Loke, Hans Du Buf "Some further results of experimental comparison of range image segmentation algorithms", Proc. 15th ICVP, Vol. 4, pp 877-881, Barcelona, Spain, 2000

[76] João Rodrigues, Robert Loke, Hans Du Buf "Fast segmentation of 3D data using an octree", Proc. 11th Portuguese Conf. on Pattern Recognition, pp 185-189, Porto, 2000

[77] Robert Loke, Roberto Lam, Hans Du Buf "Fast segmentation of sparse 3D data by interpolating segmented boundaries in an octree", Proc. 11th Portuguese Conf. on Pattern Recognition, pp 431-433, Porto, Portugal, 2000

[78] A. Ciobanu, Hamid Shahbazkia, Hans Du Buf "Contour profiling by dynamic ellipse fitting", Proc. of 15th Int. Conference on Pattern Recognition, Vol. 3, pp 758-761, Barcelona, Spain, 2000

[79] Hamid Shahbazkia, A. Ciobanu, Luís Santos, Hans Du Buf "Weighted Morphometric Shape Analysis of Diatoms", Int. Conference on Pattern Recognition, Barcelona, Spain, 2000

[80] Hans Du Buf, João Rodrigues "Simple brightness models with lowpass and Gabor filters", 23rd ECVP, Groningen, The Netherlands, Perception, Vol. 29, Suppl 52c, 2000

[81] Hans Du Buf "ADIAC: diatoms go digital", EurOCEAN2000 , Hamburg, Project Synopses, 5 pages, 2000

[82] Robert Loke, Hans Du Buf "Sonar object visualization in an octree", Proc. MTS/IEEE Conf. OCEANS 2000, pp 2067-2073, Providence, Rhode Island USA, 2000

[83] Robert Loke, Hans Du Buf "Fast interpolation, segmentation and visualization of 3D sonar seabottom data by using tree structures", Proc. MTS/IEEE Conf. OCEANS'99, Seattle, Wa (USA), Vol 3, pp 1571-1576, 1999

[84] T. R. Reed, Robert Loke, Hans Du Buf "The analysis of underwater acoustic data via 3D segmentation", Proc. 33rd Asilomar Conf. on Signals, Systems, and Computers, Pacific Grove, Ca (USA), Vol 1, pp 49-52, 1999

[85] Hans Du Buf, M. Bayer, S. Droop, R. Head, S. Juggins, S. Fischer, H. Bunke, M. Wilkinson, J. Roerdink, J. Pech-Pacheco, G. Cristobal, Hamid Shahbazkia, A. Ciobanu "Diatom identification: a double challenge called ADIAC", Proc. ICIAP'99 Conf., Venice, Italy, pp 734-739, 1999

[86] M. Keil, G. Cristobal, B. Escalante, Hans Du Buf, L. Pessoa "AMOVIP: advanced modeling of visual information processing", Proc. ICIAP'99 Conf., Venice, Italy, pp 1208-1213, 1999

[87] Robert Loke, Roberto Lam, F. Rotaru, Hans Du Buf "Improving 3D visualisation interactivity by using octrees", Proc. Workshop on Medical Imaging, Aveiro (Portugal), pp 19-22. Also published in: Journal of the Dept. of Electronics and Telecomm., Univ. of Aveiro, Vol. 3, No. 2, pp 167-172, 1999

[88] Hans Du Buf, H. Bunke, S. Droop, J. Roerdink, S. Juggins, G. Cristobal, B. Ludes "Automatic diatom identification and classification", 3rd Europ. Marine Science and Technology Conf., Lisbon, K.-G. Barthel et al. (eds), Project Synopses Vol. III, pp 1071-1074, 1998

[89] Robert Loke, Hans Du Buf "Volumetric processing of underwater acoustic data", Proc. MTS/IEEE Conf. OCEANS'98, Nice, pp 742-747, 1998

[90] S. G. Nikolov, Robert Loke, Hans Du Buf "Interactive 3-D visualisation of sonar data using VRML", Proc. Int. Workshop on Synthetic-Natural Hybrid Coding and Three Dimensional Imaging, Rhodes, Greece, pp 36-39, 1997

[91] J. H. van Deemter, Hans Du Buf "Edge and line detection using the phase of Gabor wavelets", Proc. 2nd Pamonop Workshop, J.H. van Deemter and J.M.H. du Buf (eds), Faro, pp 47-60, 1995

[92] Hans Du Buf, F. Heitger "A neural network for detecting symmetry orders", 7th ICIAP in Bari (Italy). Progress in Image Analysis III, S. Impedovo (ed.), World Scientific, pp 669-672, 1994

[93] Hans Du Buf, S. Fischer "The role of syntactical processing in brightness perception", 4th Int. Conf. on Visual Search, Eindhoven, The Netherlands. (book never appeared) , 1994

[94] Hans Du Buf, S. Fischer "Modeling spatial brightness by syntactical summation", 17th ECVP, Eindhoven, The Netherlands. Perception Vol. 23, Suppl. 106c, 1994

[95] Hans Du Buf, S. Fischer "Syntactical visual analysis and reconstruction", Proc. BMT Conference Biomedical Engineering 93, University of Graz, Austria, Vol. 38, pp 105-106, 1993

[96] Hans Du Buf "Lowpass channels and Whites effect", 15th ECVP, Pisa, Italy, see Perception Vol 21, A80 , 1992

[97] J. Bigun, Hans Du Buf "Texture segmentetion by real and complex moments of the Gabor power spectrum", In Progress in Image Analysis and Processing II, V. Cantoni et al. (eds), World Scientific, Singapore, pp. 191-198, 1992

[98] J. Bigun, Hans Du Buf "Geometric image primitives by complex moments in Gabor space and the application to texture segmentation", Proc. IEEE CS Conference CVPR-92, Champaign, Ill., pp 648-650, 1992

[99] Hans Du Buf, J. Bigun "Unsupervised image segmentation: visible progress in chasing a chimera", Proc. 1st Swiss Symp. on Pattern Recognition and Computer Vision, J. Bigun and J.M.H. du Buf (eds), Lausanne, pp 107-118 , 1992

[100] Hans Du Buf "Ambiguities in Gabor space", Presented at the Third Int. Conf. on Visual Search, Univ. of Nottingham, U.K., 1992

[101] Hans Du Buf "Limits of line and edge detection", 15th ECVP, Pisa, Italy, see Perception Vol 21, Suppl. A98, 1992

[102] Hans Du Buf, J. Bigun "Gabor space and texture segmentation", N3AV: ESPRIT-BRA Workshop on Neural networks in natural and artificial vision. Chamrousse (France), pp 37-42, 1991

[103] T. G. Campbell, Hans Du Buf "A quantitative comparison of median-based filters", Visual Communications and Image Processing '90, SPIE Vol. 1360, pp 176-187, 1990

[104] Hans Du Buf "Towards unsupervised texture segmentation using Gabor spectral decomposition", 5th Int. Conf. on Image Analysis and Processing, Positano, Italy, pp 65-72, 1989

[105] Hans Du Buf, J. A. J. Roufs "Spatial characteristics of brightness and apparent-contrast perception", Perception Vol. 15, Suppl. A35 (9th ECVP, Bad Nauheim, FRG), 1986

[106] Hans Du Buf, J. A. J. Roufs "Brightness-contrast: brightness versus apparent contrast", Perception Vol. 14, Suppl. A26 (8th ECVP = European Conference on Visual Perception, Peniscola, Spain), 1985

[1] Hans Du Buf "Spatial characteristics of brightness and apparent-contrast perception", Doctoral Thesis, Eindhoven University of Technology, The Netherlands, pp 165, 1987

No publications found for author "cap-johannesmartinushubertina"

[1] U. Bobinger, Hans Du Buf "Modeling Visual Detection: MODELFEST data", Report CINTAL/UALG, 6 pp., 2004

[2] U. Bobinger, Hans Du Buf "Modeling Visual Detection: CIF data", Report CINTAL/UALG, 7pp., 2004

[3] Hans Du Buf "A new 2D Gabor filter set design", Technical Report UALG-AMOVIP-TR01 (14 pages), 1998

[1] Hans Du Buf, João Rodrigues "Arquitectura do cortex visual com aplicacoes na visao por computador", NERA, Loule,Portugal, 2004

[2] Hans Du Buf "Unsupervised texture segmentation", EPFL Supercomputing Review No. 2, pp. 8-10, 1990

[3] Hans Du Buf, J. A. J. Roufs "On brightness and brightness-contrast", Contribution Annual Report 1985, Dutch Foundation for Biophysics, 1985

[4] Hans Du Buf "Experiments on detection symmetry in spatial vision", IPO Annual Progress Report 20, pp 57-64, 1985

[5] Hans Du Buf "The consistency of matching and scaling methods in brightness perception", IPO (IPO = Institute for Perception Research, a collaboration between the Eindhoven University of Technology and the Philips Physics Laboratory) Annual Progress Report 19, pp 63-69, 1984