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CVC
Member of ADAS group

Angel D. Sappa, Ph.D.

Senior Researcher

Edifici O Campus UAB
08193 - Bellaterra (Cerdanyola del Valles)
Barcelona, Spain

Email: angel dot sappa [at] cvc dot uab dot es
Tel: +34 93 581 4905
Fax: +34 93 581 1670


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**Warning: the information published herein is for the personal use of the reader. Copyright and all rights are retained by authors or by other copyright holders. Making copies of the information in full or in any portion for purposes other than own use is a violation of copyright.

    
International Journals


Sensors_2016
Santos V., Sappa A. and Oliveira M., "Special Issue on Autonomous Driving and Driver Assistance Systems", Robotics and Autonomous Systems, Vol. 91, May 2017, pp. 208-209.



Sensors_2016
Aguilera C. A., Sappa A., Aguilera C. and Toledo R., "Cross-Spectral Local Descriptors via Quadruplet Network", Sensors, Vol. 17, No. 4, April 2017, pp. 1-14.



Sensors_2016 Sappa A., Aguilera C., Carvajal J., Oliveira M., Romero D., Vintimilla B. and Toledo R., "Monocular visual odometry: A cross-spectral image fusion based approach", Robotics and Autonomous Systems, Vol. 85, November 2016, pp. 26-36.



Sensors_2016
Oliveira M., Santos V., Sappa A., Dias P. and Moreira A., "Incremental texture mapping for  autonomous  driving", Robotics and Autonomous Systems, Vol. 84, October 2016, pp. 113-128.



Sensors_2016 Oliveira M., Santos V., Sappa A., Dias P. and Moreira A., "Incremental Scenario Representations for Autonomous Driving using Geometric Polygonal Primitives", Robotics and Autonomous Systems, Vol. 83, September 2016, pp. 312-325.



Sensors_2016 Sappa A., Carvajal J., Aguilera C., Oliveira M., Romero D. and Vintimilla B., "Wavelet based visible and infrared image fusion: a comparative study", Sensors, Vol. 16, No. 6, June 2016, pp. 1-15.



IEEE_ITS_2015 Mouats T., Aouf N., Sappa A., Aguilera C. and Toledo R., "Multi-Spectral Stereo Odometry", IEEE Transactions on Intelligent Transportation Systems, Vol. 16, No. 3, June 2015, pp. 1210-1224.



Sensors_2014
Oliveira M., Santos V. and Sappa A., "Multimodal Inverse Perspective Mapping", Information Fusion, Vol. 24, July 2015, pp. 108-121.



Sensors_2014
Onkarappa N. and Sappa A., "Synthetic sequences and ground-truth flow field generation for algorithm validation", Multimedia Tools and Applications, Vol. 74, No. 9, May 2015, pp. 3121-3135.



Sensors_2014
Oliveira M., Sappa A. and Santos V., "A probabilistic approach for color correction in image mosaicking applications"IEEE Transactions on Image Processing, Vol. 14, No. 2, January 2015, pp. 508-523.



Sensors_2014 Piñol M., Sappa A. and Toledo R., “Adaptive Feature Descriptor Selection based on a Multi-Table Reinforcement Learning Strategy”, Neurocomputing, Vol. 150, Part A, February 2015, pp. 106-115.



Sensors_2014
Rouhani M., Sappa A. and   Boyer E., "Implicit B-Spline Surface Reconstruction"IEEE Transactions on Image Processing, Vol. 14, No. 1, January 2015, pp. 22-32.



Sensors_2014 Ricaurte P., Chilán C., Aguilera-Carrasco C., Vintimilla B. and Sappa A., “Feature Point Descriptors: Infrared and Visible Spectra”, Sensors, Vol. 14, No. 2, February 2014, pp. 3690-3701.



IEEE_ITS_2014
Onkarappa N. and Sappa A., "Speed and texture: an empirical study on optical flow accuracy in ADAS scenarios", IEEE Transactions on Intelligent Transportation Systems, Vol. 15, No. 1, February 2014, pp. 136-147.



IEEE_TIP_2013
Rouhani M. and Sappa A., The Richer Representation the Better Registration”, IEEE Transactions on Image Processing, Vol. 22, No. 12, December 2013, pp. 5036-5049.



IEEE_TIP_2013 Onkarappa N. and Sappa A., "A Novel Space Variant Image Representation", Journal of Mathematical Imaging and Vision, Vol. 47, No.1, September 2013, pp. 48-59.



PRL2013
Barrera F., Lumbreras F. and Sappa A., "Multispectral Piecewise Planar Stereo using Manhattan-World Assumption", Pattern Recognition Letters, Vol. 34, No.1, January 2013, pp. 52-61.



S12
Aguilera C., Barrera F., Lumbreras F., Sappa A., and Toledo R., “Multispectral Image Feature Points”, Sensors, Vol 12, No. 9, September 2012, pp. 12661-12672.



STSP2012
Barrera F., Lumbreras F. and Sappa A., "Multimodal Stereo Vision System: 3D Data Extraction and Algorithm Evaluation", IEEE Journal of Selected Topics in Signal Processing, Vol. 6, No. 5, September 2012, pp. 437-446.



IP2012
Rouhani M. and Sappa A., “Implicit Polynomial Representation through a Fast Fitting Error Estimation”, IEEE Transactions on Image Processing, Vol. 21, No. 4, April 2012, pp. 2089-2098.



ITS2011
Dornaika F., Alvarez J., Sappa A. and López A., “A New Framework for Stereo Sensor Pose through Road Segmentation and Registration”, IEEE Transactions on Intelligent Transportation Systems, Vol. 12, No. 4, December 2011, pp. 954-966.



JMIV2011
Julià C., Sappa A., Lumbreras F., Serrat J. and López A., “Rank Estimation in Missing Data Matrix Problems”, Journal of Mathematical Imaging and Vision, Vol. 39, No. 2, February 2011, pp. 140-160.



IMA2011
Julià C., Lumbreras F., and Sappa A., “A Factorization-based Approach to Photometric Stereo”, International Journal of Imaging Systems and Technology, Vol. 21, No. 1, February 2011, pp. 115-119.



PAMI2010 Gerónimo D., López A., Sappa A. and Graf T., “Survey of Pedestrian Detection for Advanced Driver Assistance Systems”, IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 32, No. 7, July 2010, pp. 1239-1258.



CVIU2010 Gerónimo D., Sappa A., Ponsa D. and López A., “2D-3D Based On-Board Pedestrian Detection System”, Computer Vision and Image Understanding, Vol 114, No. 5, May 2010, pp. 583-595.



IVC2010 Julià C., Sappa A., Lumbreras F., Serrat J. and López A., “An iterative multiresolution scheme for SFM with missing data: single and multiple object scenes”, Image and Vision Computing, Vol. 28, No. 1, January 2010, pp. 164-176.



IJEC2009/2010 Julià C., Sappa A., Lumbreras F., Serrat J. and López A., “Predicting Missing Ratings in Recommender Systems: Adapted Factorization Approach”, International Journal of Electronic Commerce, Vol. 14, No. 2, Winter 2009-2010, pp. 89-108.



JMIV2009 Julià C., Sappa A., Lumbreras F., Serrat J. and López A., “An Iterative Multiresolution Scheme for SFM with Missing Data”, Journal of Mathematical Imaging and Vision, Vol. 34, No. 3, July 2009, pp. 240-258.



IVC2009 Dornaika F. and Sappa A., "A Featureless and Stochastic Approach to On-board Stereo Vision System Pose", Image and Vision Computing, Vol. 27, No. 9, August 2009, pp. 1382-1393.



PRL2009 Dornaika F. and Sappa A., "Instantaneous 3D Motion from Image Derivatives using the Least Trimmed Square Regression", Pattern Recognition Letters, Vol. 30, No. 5, April 2009, pp. 535-543.



ITS2008 Sappa A., Dornaika F., Ponsa D., Gerónimo D. and López A., “An Efficient Approach to On-Board Stereo Vision System Pose Estimation”, IEEE Transactions on Intelligent Transportation Systems, Vol. 9, No. 3, Sept. 2008, pp. 476-490.



MVA2008 Dornaika F. and Sappa A., “Evaluation of an Appearance-based 3D Face Tracker using Dense 3D Data”, Machine Vision and Applications. Vol. 19, No. 5-6, October 2008, pp. 427-441.



LAAR2008 Berti H., Sappa A. and Agamennoni O., “Improved Dynamic Window Approach by Using Lyapunov Stability Criteria”, Latin American Applied Research, Vol. 38, No. 4, October 2008, pp. 289-298.



EL2008 Julià C., Sappa A., Lumbreras F., Serrat J. and López A., “Rank Estimation in 3D Multibody Motion Segmentation”, IEE Electronics Letters. Vol. 44, No. 4, February 2008, pp. 279-280.



PRL2007 Dornaika F. and Sappa A., “Rigid and Non-rigid Face Motion Tracking by Aligning Texture Maps and Stereo 3D Models”, Pattern Recognition Letters. Vol 28, No. 15, November 2007, pp. 2116-2126.



ISJ2007 Sappa A. and Garcia M. A., “Incremental Integration of Multiresolution Range Images”, The Imaging Science Journal. Vol. 55, No. 3, pp. 127-139.



SPIE_JEI2007 Sappa A. and Vintimilla B., “Cost-Based Closed Contour Representations”, SPIE Journal of Electronic Imaging. Vol. 16, No. 2, 023009, April-June 2007.



SPIE_JEI2007 Sappa A. and Garcia M. A., “Coarse-to-Fine Approximation of Range Images with Bounded Error Adaptive Triangular Meshes”, SPIE Journal of Electronic Imaging. Vol. 16, No. 2, 023010, April-June 2007.



VC2007 Sappa A. and Garcia M. A., “Generating Compact Representations of Static Scenes by Means of 3D Object Hierarchies”, The Visual Computer, Vol. 23, No. 2, February 2007, pp. 143-154.



IMST2006 Sappa A., “Splitting up Panoramic Range Images into Compact 2½D Representations”, International Journal of Imaging Systems and Technology, Vol. 16, No. 3, December 2006, pp. 85-91.



EL2006 Sappa A., Gerónimo D., Dornaika F. and López A., “On-board Camera Extrinsic Parameter Estimation”, IEE Electronics Letters, Vol. 42, No. 13, June 2006, pp. 745-746.



IP2006 Sappa A., “Unsupervised Contour Closure Algorithm for Range Image Edge-Based Segmentation”, IEEE Transactions on Image Processing, Vol. 15, No. 2, February 2006, pp. 377-384.



SPIC2005 Restrepo-Spetch A., Sappa A. and Devy M. “Edge Registration Versus Triangular Mesh Registration, a Comparative Study”, Signal Processing: Image Communication, Vol. 20, No. 9-10, October-November 2005, pp. 853-868.



SMC2004 Garcia M. A. and Sappa A., “Efficient Generation of Discontinuity-Preserving Adaptive Triangulations from Range Images”, IEEE Transactions on Systems, Man, and Cybernetics (Part B), Vol. 34, No. 5, October 2004, pp. 2003-2014.





Background


    Books


J_JMIV2013
Sappa A. and Vitrià J. (Editors), "Multimodal Interaction in Image and Video Applications", Intelligent Systems Reference Library, Vol 48, Springer Verlag, 2013.



J_JMIV2013
Sappa A. and Triantafyllidis G.A. (Editors), "Computer Graphics and Imaging", Crete, Greece, June 2012. ISBN: 978-0-88986-921-9.



J_JMIV2013 Sappa A. (Editor), "Computer Graphics and Imaging", Innsbruck, Austria, Febrary 2010. ISBN: 978-0-88986-824-3.





Background


    Book Chapters


SAnneal2012 Aguilera C., Ramos M., and Sappa A., “Simulated Annealing: A Novel Application of Image Processing in the Wood Area”, chapter 5 in Simulated Annealing - Advances, Applications and Hybridizations, Book edited by: Marcos de Sales Guerra Tsuzuki, August 2012, pp. 91-104. (Open Access).



SPRINGER2011
Sappa A., Gerónimo D., Dornaika F., Rouhani M. and López A., “Moving object detection from mobile platforms using stereo data registration”, chapter 3 in Computational Intelligence paradigms in advanced pattern classification, Ed. Marek R. Ogiela and Lakhmi C. Jain, Springer-Verlag's Book Series, 2012, pp. 25-37.



NOVA2010
Gerónimo D., Sappa A., and López A., “Stereo-based Candidate Generation for Pedestrian Protection Systems”, chapter 9 in Binocular Vision: Development, Depth and Disorders, Book edited by: Jacques McCoun and Lucien Reeves, NOVA Publishers, July 2010, pp. 189-208.



ELCVIA2009 Sappa A., Aifanti N., Malassiotis S. and Strintzis M. G., “Prior Knowledge Based Motion Model Representation”, chapter 16 in Progress in Computer Vision and Image Analysis, Ed. H. Bunke et al., World Scientific, August 2009, pp. 283-299 (invited paper from ELCVIA).



Aifanti N., Sappa A., Grammalidis N and Malassiotis S, “Advances in Tracking and Recognition of Human Motion”, Encyclopedia of Information Science and Technology, 2nd. Edition, 2009, pp. 65-71.



STEREO2008 Dornaika F. and Sappa A., “Real Time Stereo Image Registration for Planar Structure and 3D Sensor Pose Estimation”, chapter 18 in Stereo Vision, Book edited by: Asim Bhatti, November 2008, pp. 299-316. (Open Access).



VISAPP2006 Dornaika F. and Sappa A.“Improving Appearance-Based 3D Face Tracking Using Sparse Stereo Data”, book chapter, Advances in Computer Graphics and Computer Vision, Ed. J. Braz, A. Ranchordas, H. Araújo and J. Jorge, Springer Verlag, 2007, pp. 354-366, (best papers VISAPP 2006).



CB2007 Sappa A., Gerónimo D., Dornaika F. and López A., “Stereo Vision Camera Pose Estimation for On-Board Applications”, chapter 3 in Scene Reconstruction, Pose Estimation and Tracking, Book edited by: Rustam Stolking, 2007, pp. 39-50. (Open Access).



CB2005 Dornaika F. and Sappa A., “SFM for Planar Scenes: a Direct and Robust Approach”, book chapter, Informatics in Control, Automation and Robotics II, Ed. J. Filipe, J. Ferrier, J. Cetto and M. Carvalho, Springer Verlag, 2007, pp. 129-136. (best papers ICINCO 2005).



CB2005 Sappa A., Aifanti N., Grammalidis N and Malassiotis S, “Survey of 3D Human Body Representations”, Encyclopedia of Information Science and Technology I-V, 2005.



CB2005 Aifanti N., Sappa A., Grammalidis N and Malassiotis S, “Human Motion Tracking and Recognition”, Encyclopedia of Information Science and Technology I-V, 2005.



ELCVIA2005 Sappa A., Aifanti N., Malassiotis S. and Strintzis M. G., “Prior Knowledge Based Motion Model Representation”, Electronic Letters on Computer Vision and Image Analysis 5(3):55-67, Special Issue on Articulated Motion & Deformable Objects, August 2005.



CB2004 Sappa A., Aifanti N., Grammalidis N and Malassiotis S, “Advances in Vision-Based Human Body Modeling, chapter one in: 3D Modeling and Animation:Systhesis and Analysis Techniques for the Human Body, N. Sarris and M. Strintzis, pp. 1-26, 2004.



CVonline Garcia M. A. and Sappa A., “Adaptive Triangulation of Range Images”, CVonline (Computer Vision on line), http://homepages.inf.ed.ac.uk/rbf/CVonline/.



Background


    International Conferences


ECMSM_2017
Suárez P., Sappa A. and Vintimilla B. “Cross-Spectral Image Patch Similarity using Convolutional Neural Network”, IEEE Int. Workshop of Electronics, Control, Measurement, Signals and their application to Mechatronics, San Sebastian, Spain, May 24-26, 2017.



ECMSM_2017
Valencia A., Idrovo R., Sappa A., Plaza D. and Ochoa D. “A 3D Vision Based Approach for Optimal Grasp of Vacuum Grippers”, IEEE Int. Workshop of Electronics, Control, Measurement, Signals and their application to Mechatronics, San Sebastian, Spain, May 24-26, 2017.



CIARP_2016
Carvajal J., Romero D., and Sappa A., “Fine-Tuning Based Deep Convolutional Networks for Lepidopterous Genus Recognition”, 21st Iberoamerican Congress on Pattern Recognition, LNCS 10125, Springer Verlag, Lima, Peru, November 8-11, 2016, pp 467-475.



CVPR_2016
Aguilera C.A., Aguilera F., Sappa A., Aguilera C. and Toledo R., “Learning cross-spectral similarity measures with deep convolutional neural networks”, IEEE Int. Conf. on Computer Vision and Pattern Recognition (CVPR) Workshops, Las vegas, USA, June 26-July 1, 2016.



ACIVS_2015
Romero D., Frizera A., Sappa A., Vintimilla B. and Bastos T., “A predictive model for human activity recognition by observing actions and context”, Int. Conf. on Advanced Concepts for Intelligent Vision Systems, LNCS 9386, Springer Verlag, Catania, Italy, October 28-29, 2015, pp 323-333.



ROBOT_2015
Oliveira M., Santos V., Sappa A. and Dias P., ““Scene Representations for Autonomous Driving: an approach based on polygonal primitives”, ROBOT'2015: Second Iberian Robotics Conference, Lisbon, Portugal, November 19-21, 2015, pp 503-515.



ROBOT_2015
Poujol J., Aguilera-Carrasco C., Danos E., Vintimilla B., Toledo R. and Sappa A., “A Visible-Thermal Fusion based Monocular Visual Odometry”, ROBOT'2015: Second Iberian Robotics Conference, Lisbon, Portugal, November 19-21, 2015, pp 517-528.



IROS_2015
Oliveira M., Seabra Lopes L., Hyun Lim G., Hamidreza Kasaei S., Sappa A. and Tomé A., “Concurrent Learning of Visual Codebooks and Object Categories in Openended Domains”, IEEE Int. Conf. on Intelligent Robots and Systems, Hamburg, Germany, September 28 - October 02, 2015, pp 2488-2495.



ICIP_2015 Aguilera C.A., Sappa A. and Toledo R., “LGHD: A Feature Descriptor for Matching Across Non-Linear Intensity Variations”, IEEE Int. Conf. on Image Processing, Quebec, Canada, September 27-30, 2015, pp 178-181.



MVML_2015
Cruz M., Aguilera C.A., Vintimilla B., Toledo R. and Sappa A., “Cross-Spectral Image Registration and Fusion: an Evaluation Study”, Int. Conf. on Machine Vision and Machine Learning, Barcelona, Spain, July 13-14, 2015.



3DV_2014
Rouhani M. Boyer E. and Sappa A., “Non-Rigid Registration meets Surface Reconstruction”, IEEE Int. Conf. on 3D Vision, Tokyo, Japan, December 8-11, 2014, pp. 617-624.



VISAPP_2014
Ricaurte P., Chilán C., Aguilera-Carrasco C., Vintimilla B and Sappa A., “Performance Evaluation of Feature Point Descriptors in the Infrared Domain”, Int. Conf. on Computer Vision Theory and Applications, Lisbon, Portugal, January 5-8, 2014, vol 1, pp 545-550.



VISAPP_2014
Onkarappa N., Aguilera-Carrasco C., Vintimilla B and Sappa A., “Cross-spectral Stereo Correspondence using Dense Flow Fields”, Int. Conf. on Computer Vision Theory and Applications, Lisbon, Portugal, January 5-8, 2014, vol 3, pp 613-617.



VISAPP_2014 Amato A., Lumbreras F and Sappa A., “A General-purpose Crowdsourcing Platform for Mobile Devices”, Int. Conf. on Computer Vision Theory and Applications, Lisbon, Portugal, January 5-8, 2014, vol 3, pp 211-215.



CrowdMM_2013 Amato A., Sappa A., Fornés A., Lumbreras F. and Lladós J., “Divide and Conquer: atomizing and parallelizing a task in a mobile crowdsourcing platform", Int. ACM Workshop on Crowdsourcing for Multimedia, Barcelona,  Spain, October 21-25, 2013, pp. 21-22.



BMVC_2013 Ros G., Guerrero J., Sappa A., Ponsa D. and López A., “Fast and Robust l1-averaging-based Pose Estimation for Driving Scenarios”, British Machine Vision Conference, Bristol, United Kingdom, September 9-13, 2013.



CAIP_2013 Pistarelli M., Sappa A. and Toledo R., “Multispectral Stereo Image Correspondence”, Int. Conf. on Computer Analysis of Images and Patterns, York, LNCS 8048, Springer Verlag, UK, August 27-29, 2013, pp. 217-224.



CAIP_2013 Onkarappa N. and Sappa A., “Laplacian Derivative based Regularization for Optical Flow Estimation in Driving Scenario", Int. Conf. on Computer Analysis of Images and Patterns, LNCS 8048, Springer Verlag, York, UK, August 27-29, 2013, pp. 483-490.



ICRA_2013 Ros G., Guerrero J., Sappa A., Ponsa D. and López A., “VSLAM pose initialization via Lie groups and Lie algebras optimization”, IEEE International Conference on Robotics and Automation, Karlsruhe, Germany, May 6-10, 2013, pp. 5720-5727.



ICIAR_2013
Vino G., and Sappa A., “Revisiting Harris Corner Detector Algorithm: a Gradual Thresholding Approach”, Int. Conf. on Image Analysis and Recognition, LNCS 7950, Springer Verlag, Póvoa de Varzim, Portugal, June 26-28, 2013, pp. 354-363.



ICSIP_2012
Onkarappa N., Veerabhadrappa  S. and Sappa A., “Optical Flow in Onboard Applications: A Study on the Relationship Between Accuracy and Scene Texture", International Conference on Signal and Image Processing, LNEE 221, Springer Verlag, Coimbatore, India, December 13-15, 2012, pp. 257-267.



ICSIP_2012 Piñol M., Sappa A. and Toledo R., “Multi-Table Reinforcement Learning for Visual Object Recognition”, International Conference on Signal and Image Processing, LNEE 221, Springer Verlag, Coimbatore, India, December 13-15, 2012, pp. 469-480.



ECCV_2012
Rouhani M. and Sappa A., “Non-Rigid Shape Registration: A Single Linear Least Squares Framework” European Conference on Computer Vision, LNCS 7578, Springer Verlag, Firenze, Italy, October 7-13, 2012, pp. 264-277.



Oliveira M., Santos V. and Sappa A., “Short term path planning using a multiple hypothesis evaluation approach for an autonomous driving competition”, IEEE 4th Workshop on Planning,Perception and Navigation for Intelligent Vehicles, Vilamoura, Algarve, Portugal, October 7th, 2012.



IV_2012 Ros G., Sappa A., Ponsa D. and López A., “Visual SLAM for Driverless Cars: A Brief Survey”, IEEE Workshop on Navigation, Perception, Accurate Positioning and Mapping for Intelligent Vehicles, Alcalá de Henares, Spain, June 3, 2012.



ALA_2012
Piñol M., Sappa A., López A. and Toledo R., “Feature Selection Based on Reinforcement Learning for Object Recognition”, Adaptive Learning Agents Workshop, Valencia, Spain, June 4-8, 2012, pp. 33-39.



IV_2012 Onkarappa N. and Sappa A., “An Empirical Study on Optical Flow Accuracy Depending on Vehicle Speed", IEEE Intelligent  Vehicles Symposium, Alcalá de Henares, Spain, June 3-7, 2012, pp. 1138-1143.



IV_2012
Oliveira M., Sappa A. and Santos V., “Color Correction for Onboard Multi-camera Systems using 3D Gaussian Mixture Models”, IEEE Intelligent Vehicles Symposium, Alcalá de Henares, Spain, June 3-7, 2012, pp. 299-303.



ICIAR_2012 Barrera F., Lumbreras F. and Sappa A., “Evaluation of Similarity Functions in Multimodal Stereo”, Int. Conf. on Image Analysis and Recognition, LNCS 7324, Springer Verlag, Aveiro, Portugal, June 25-27, 2012, pp. 320-329.



ICIAR_2012
Oliveira M., Sappa A. and Santos V., “Color Correction using 3D Gaussian Mixture Models”, Int. Conf. on Image Analysis and Recognition, LNCS 7324, Springer Verlag, Aveiro, Portugal, June 25-27, 2012, pp. 97-106.



QIRT_2012 Barrera F., Lumbreras F., Aguilera C. and Sappa A., “Planar-Based Multispectral Stereo”, 11th Quantitative InfraRed Thermography, Naples, Italy, June 11-14, 2012.



QIRT_2012 Aguilera C., Barrera F., Sappa A., and Toledo R., “A Novel SIFT-Like-Based Approach for FIR-VS Images Registration”, 11th Quantitative InfraRed Thermography, Naples, Italy, June 11-14, 2012.



CAIP_2011 Rouhani M. and Sappa A., “Correspondence Free Registration through a Point-to-Model Distance Minimization”, IEEE Int. Conf. on Computer Vision, Barcelona, Spain, November 6-13, 2011, pp. 2150-2157.



CAIP_2011 Onkarappa N. and Sappa A., “Space Variant Representations for Mobile Platform Vision Applications”, Int. Conf. on Computer Analysis of Images and Patterns, LNCS Vol. 6855, Springer Verlag, Seville, Spain, August 29-31, 2011, pp. 146-154.



ICIP_2011 Rouhani M. and Sappa A., “Implicit B-Spline Fitting using the 3L Algorithm”, IEEE Int. Conf. on Image Processing, Brussels, Belgium, September 11-14, 2011, pp. 909-912.



CVPR_2011 Oliveira M., Sappa A. and Santos V., “Unsupervised Local Color Correction for Coarsely Registered Images”, IEEE Int. Conf. on Computer Vision and Pattern Recognition, Colorado Springs, USA, June 21-23, 2011, pp. 201-208.



ICIP_2010 Barrera F., Lumbreras F. and Sappa A., “Multimodal Template Matching Based on Gradient and Mutual Information Using Scale Space”, IEEE Int. Conf. on Image Processing, Hong Kong, September 26-29, 2010, pp. 2749-2752.



ICIP_2010
Rouhani M. and Sappa A., “A Fast Implicit Polynomial Fitting Approach”, IEEE Int. Conf. on Image Processing, Hong Kong, September 26-29, 2010, pp. 1429-1432.



ICIAR_2010
Onkarappa N. and Sappa A., “On-Board Monocular Vision System Pose Estimation through a Dense Optical Flow”, Int. Conf. on Image Analysis and Recognition,  LNCS Vol. 6111, Springer Verlag, Povoa de Varzim, Portugal, June 21-23, 2010, pp. 230-239.



ICIAR_2010
Rouhani M. and Sappa A., “Relaxing the 3L Algorithm for an Accurate Implicit Polynomial Fitting”, IEEE Int. Conf. on Computer Vision and Pattern Recognition, San Francisco, CA, USA, June 13-18, 2010, pp. 3066-3072.



ICIP2009 Sappa A. and Rouhani M., “Efficient Distance Estimation for Fitting Implicit Quadric Surfaces”, IEEE Int. Conf. on Image Processing, Cairo, Egypt, November 7-11, 2009, pp. 3521-3524.



ACIVS2009 Rouhani M. and Sappa A., “A Novel Approach to Geometric Fitting of Implicit Quadrics”, Int. Conf. on Advanced Concepts for Intelligent Vision Systems, LNCS Vol. 5807, Springer Verlag, Bordeaux, France, September 2009, pp. 121-132.



ICIP2008 Julià C., Sappa A., Lumbreras F., Serrat J. and López A., “Photometric Stereo through an Adapted Alternation Approach”, IEEE Int. Conf. on Image Processing, San Diego, California, USA, October 12-15, 2008, pp. 1500-1503.



ICEBE2008 Julià C., Sappa A., Lumbreras F., Serrat J. and López A., “An Adapted Alternation Approach for Recommender Systems”, IEEE Int. Conf. on e-Business Engineering, Xi'an, China, October 22-24, 2008, pp. 128-135.



IROS2008 Sappa A., Dornaika F., Gerónimo D. and López A., “Registration-based moving object detection from a moving camera”, IROS2008 2nd Workshop on Perception, Planning and Navigation for Intelligent Vehicles, Nice, France, September 26, 2008, pp. 65-69.



ICIAR2008 Julià C., Sappa A., Lumbreras F., Serrat J. and López A., “Recovery of Surface Normals and Reflectance from Different Lighting Conditions”, Int. Conf. on Image Analysis and Recognition, LNCS Vol. 5112, Springer Verlag, Póvoa de Varzim, Portugal, June 25-27, 2008, pp. 315-325.



IV2008 Dornaika F. and Sappa A., “Real Time On Board Stereo Camera Pose through Image Registration”, IEEE Intelligent Vehicles Symposium, Eindhoven, Netherlands, June 4-6, 2008, pp 804-809.



ICIAR2007 Dornaika F. and Sappa A., “Real-time Vehicle Ego-Motion using Stereo Pairs and Particle Filters”, Int. Conf. on Image Analysis and Recognition, LNCS Vol. 4633, Springer Verlag, Montreal, Canada, August 2007, pp 469-480.



EUROCAST2007 Sappa A., Dornaika F., Gerónimo D. and López A., “Efficient On-Board Stereo Vision Pose Estimation”, Computer Aided Systems Theory, LNCS Vol. 4739, Springer Verlag, November 2007, pp. 1183-1190 (selected paper from EUROCAST2007).



EUROCAST2007 Sappa A., Herrero R., Dornaika F., Gerónimo D. and López A., “Road Approximation in Euclidean and v-Disparity Space: A Comparative Study”, Computer Aided Systems Theory, LNCS Vol. 4739, Springer Verlag, November 2007, pp. 1105-1112 (selected paper from EUROCAST2007).



IBPRIA2007 Julià C., Sappa A., Lumbreras F., Serrat J. and López A., “Motion Segmentation from Feature Trajectories with Missing Data”, 3rd. Iberian Conference on Pattern Recognition and Image Analysis, LNCS Vol. 4477, Springer Verlag, Girona, Spain, June 2007, pp. 483-490.



IBPRIA2007 Gerónimo D., López A. and Sappa A., “Computer Vision Approaches to Pedestrian Detection: Visible Spectrum Survey”, 3rd. Iberian Conference on Pattern Recognition and Image Analysis, LNCS Vol. 4477, Springer Verlag, Girona, Spain, June 2007, pp. 547-554.



IBPRIA2007 Gerónimo D., López A., Ponsa D. and Sappa A., Haar Wavelets and Edge Orientation Histograms for On-board Pedestrian Detection”, 3rd. Iberian Conference on Pattern Recognition and Image Analysis, LNCS Vol. 4477, Springer Verlag, Girona, Spain, June 2007, pp. 418-425.



ICRA2007 Berti H., Sappa A. and Agamennoni O., “Autonomous Robot Navigation with a Global and Asymptotic Convergence”, IEEE Int. Conf. on Robotics and Automation, Roma, Italy, April 2007, pp. 2712-2717.



ICVS2007 Gerónimo D., Sappa A., López A. and Ponsa D., “Adaptive Image Sampling and Windows Classification for On-board Pedestrian Detection”, Int. Conf. on Computer Vision Systems, Bielefeld, Germany, March 2007. (Open Access).



EUROCAST2007 Sappa A., Dornaika F., Gerónimo D. and López A., “Efficient On-Board Stereo Vision Pose Estimation”, EUROCAST2007, Workshop on Cybercars and Intelligent Vehicles, Las Palmas de Gran Canaria, Spain, February, 2007, pp. 406-409.



EUROCAST2007 Sappa A., Herrero R., Dornaika F., Gerónimo D. and López A., “Road Approximation in Euclidean and v-Disparity Space: A Comparative Study”, EUROCAST2007, Workshop on Cybercars and Intelligent Vehicles, Las Palmas de Gran Canaria, Spain, February, 2007, pp. 368-369.



SITIS2006 Sappa A., and Vintimilla B., “Edge Point Linking by Means of Global and Local Schemes”, IEEE Int. Conf. on Signal-Image Technology and Internet-Based Systems, Hammamet, Tunisia, December 2006, pp. 551-560.



ISCIS2006 Dornaika F. and Sappa A.“3D Face Tracking using Appearance Registration and Robust Iterative Closest Point Algorithm”, 21st International Symposium on Computer and Information Sciences, LNCS Vol. 4263, Springer Verlag, Istanbul, Turkey, November 2006, pp. 532-541.



ACIVS2006 Dornaika F. and Sappa A.“Rigid and Non-Rigid Face Motion Tracking by Aligning Texture Maps and Stereo-Based 3D Models”, Int. Conf. on Advanced Concepts for Intelligent Vision Systems, LNCS Vol. 4179, Springer Verlag, Antwerp, Belgium, September 2006, pp. 675-684.



ICIAR2006 Julià C., Sappa A., Lumbreras F., Serrat J. and López A., “An Iterative Multiresolution Scheme for SFM”, Int. Conf. on Image Analysis and Recognition, LNCS Vol. 4141, Springer Verlag, Póvoa de Varzim, Portugal, September 18-20, 2006, pp. 804-815.



ICIAR2006 Sappa A., Gerónimo D., Dornaika F. and López A., “Real Time Vehicle Pose Using On-Board Stereo Vision System”, Int. Conf. on Image Analysis and Recognition, LNCS Vol. 4142, Springer Verlag, Póvoa de Varzim, Portugal, September 18-20, 2006, pp. 205-216.(Nominated for a Book Chapter in "Scene Reconstruction, Pose Estimation and Tracking" )



VIIP2006 Gerónimo D., Sappa A., López A. and Ponsa D., “Pedestrian Detection using Adaboost Learning of Features and Vehicle Pitch Estimation”, Int. Conf. on Visualization, Imaging, and Image Processing, Palma de Mallorca, Spain, August 2006.



IWICPAS2006 Dornaika F. and Sappa A.“3D Motion from Image Derivatives using the Least Trimmed Square Regression”, Int. Workshop on Intelligent Computing in Pattern Analysis/Synthesis, LNCS Vol. 4153, Springer Verlag, Xi'an, China, August 2006, pp. 76-84.



ICCS2006 Sappa A. and Dornaika F., “An Edge-Based Approach to Motion Detection”, Int. Conf. on Computational Science, LNCS Vol. 3991, Springer Verlag, Reading, United Kingdom, May 28-31, 2006, pp. 563-570.



ICCS2006 Julià C., Sappa A., Lumbreras F., Serrat J. and López A., “Factorization with Missing and Noisy Data”, Int. Conf. on Computational Science, LNCS Vol. 3991, Springer Verlag, Reading, United Kingdom, May 28-31, 2006, pp. 555-562.



VISAPP2006 Dornaika F. and Sappa A.“Improving Appearance-Based 3D Face Tracking Using Sparse Stereo Data”, Int. Conf. on Computer Vision Theory and Applications, Setúbal, Portugal, February 2006, pp. 310-317.



VSPETS2005 Dornaika F. and Sappa A., “Appearance-based 3D Face Tracker: An Evaluation Study”, IEEE Int. Workshop on Visual Surveillance and Performance Evaluation of Tracking and Surveillance, Beijing, China, October 2005, pp. 121-128.



ICINCO2005 Dornaika F. and Sappa A., “SFM for Planar Scenes: a Direct and Robust Approach”, Int. Conf. on Informatics in Control, Automation and Robotics, Barcelona, Spain, September 2005, pp. 175-180.



ICRA2005 Sappa A., “Efficient Closed Contour Extraction from Range Image's Edge Points”, IEEE Int. Conf. on Robotics and Automation, Barcelona, Spain, April 2005, pp. 4344-4349.



ICIP2004 Sappa A., Aifanti N.,Malassiotis S. and Strintzis M. G., “3D Gait Estimation from Monoscopic Video”, IEEE International Conference on Image Processing, Singapore, October 2004, pp.1963-1966.



AMDO2004 Sappa A., Aifanti N., Malassiotis S. and Strintzis M. G., “3D Human Walking Modeling, Third Int. Workshop on Articulated Motion and Deformable Objects, LNCS Vol. 3179, Springer Verlag, Springer Verlag, Palma de Mallorca, Spain, September 2004, pp. 111-122.



3DPVT2004 Sappa A.., “Automatic Extraction of Planar Projections from Panoramic Range Images”, IEEE Int. Symp. on 3D Data Processing, Visualization & Transmission, Thessaloniki, Greece, September 2004.



3DPVT2004 Sappa A., “Surface Model Generation from Range Images of Industrial Environments”, IEEE Int. Symp. on 3D Data Processing, Visualization & Transmission, Thessaloniki, Greece, September 2004.



3DPVT2004 Sappa A., Aifanti N., Malassiotis S. and Strintzis M. G., “Unsupervised Motion Classification by means of Efficient Feature Selection and Tracking”, IEEE Int. Symp. on 3D Data Processing, Visualization & Transmission, Thessaloniki, Greece, September 2004.



3DPVT2004 Sappa A. and Garcia M. A., “Hierarchical Clustering of 3D Objects and its Application to Minimum Distance Computation”, IEEE Int. Conf. on Robotics and Automation, New Orleans, LA, USA, pp. 5287-5292, April-May 2004.



ICIP2003 Sappa A., Aifanti N., Malassiotis S. and Strintzis M. G., “Monocular 3D Human Body Reconstruction Towards Depth Augmentation of Television Sequences”, IEEE International Conference on Image Processing, Barcelona, Spain, September 2003, pp. 325-328.



ISRA.2002 Restrepo-Spetch A., Devy M. and Sappa A., “Robustness to Initial Conditions in Registration of Range Images Using the ICP algorithm”, 3rd. Int. Symp. on Robotics and Automation, Toluca, Edo. de Mexico, Mexico, September 2002.



ICPR2002 Sappa A., “Improving Segmentation Results by Studying Surface Continuity”, 16th Int. Conf. on Pattern Recognition, Quebec city, Canada, August 2002, pp. 929-932.



RFIA2002 Devy M., Restrepo-Spetch A. and Sappa A., “Comparaison de Méthodes de Recalage de Données 3D par Construction d’un Maillage Triangulaire ou Extraction des Contours 3D”, 13ème Congrès Francophone AFRIF-AFIA de Reconnaissance des Formes et Intelligence Artificielle, Angers, France, January 2002 (in French).



ICIP2001 Sappa A., Bevilacqua V. and Devy M., “Improving a Genetic Algorithm Segmentation by means of a Fast Edge Detection Technique”, IEEE Int. Conf. on Image Processing, Thessaloniki, Greece, October 2001, pp. 754-757.



SIRS2001 Sappa A., Restrepo-Spetch A. and Devy M., “Range Image Registration by using an Edge-Based Representation”, 9th Int. Symp. on Intelligent Robotic Systems, Toulouse, France, July 2001.



no-pdf
Sappa A. and Devy M., “Efficient Contour Extraction in Range Image Segmentation for Building Modelling”, Int. Symp. on Virtual and Augmented Architecture, Dublin, Ireland, June 2001.



no-pdf Sappa A., Devy M. and Restrepo-Spetch A., “Segmentation d’Images 3D par Extraction des Contours 3D”, ORASIS 2001, Congrès Francophone de Vision par Ordinateur, Cahors, France, June 2001 (in French).



3DIM2001 Sappa A. and Devy M., “Fast Range Image Segmentation by an Edge Detection Strategy”, IEEE Third International Conference on 3D Digital Imaging and Modeling, Quebec, Canada, June 2001.



BSCGIP2000 Sappa A. and Garcia L. M., "Towards Real-Time Image Segmentation using Polynomial Functions", XIII Brazilian Symposium on Computer Graphics and Image Processing, Gramado, Brazil, October 2000, pp. 335.



no-pdf Sappa A., Devy M. and Garcia M. A., Modeling Built Environments from Large Range Images”, 8th Int. Symp. on Intelligent Robotic Systems, pp. 23-29, Reading, UK, July 2000.



no-pdf Bozier J., Devy M. and Sappa A., “A Geometrical Approach for the Incremental Modelling of Free Form Surface by Triangular Meshes”, 8th Int. Symp. on Intelligent Robotic Systems, pp. 13-21, Reading, UK, July 2000.



ICIP2000 Sappa A., Garcia M. A. and Vintimilla B., “Geometric and Topological Lossy Compression of Dense Range Images”, IEEE Int. Conf. on Image Processing, Vancouver, Canada, September 2000, pp.423-426.



ICPR2000a Sappa A. and Garcia M. A., Modeling Range Images with Bounded Error Triangular Meshes without Optimization”, 15th Int. Conf. on Pattern Recognition, Barcelona, Spain, September 2000, pp. 392-395.



ICPR2000b Sappa A. and Garcia M. A., “Incremental Multiview Integration of Range Images”, 15th Int. Conf. on Pattern Recognition, Barcelona, Spain, September 2000, pp. 546-549.



ECCV2000 Garcia M. A., Vintimilla B. and Sappa A., “Approximation and Processing of Intensity Images with Discontinuity-Preserving Adaptive Triangular Meshes”, Sixth European Conference on Computer Vision, LNCS Vol. 1842, Springer Verlag, Dublin, Ireland, July 2000, pp. 844-855.



ICIP1999 Garcia M. A., Vintimilla B. and Sappa A., “Efficient Approximation of Gray-Scale Images Through Bounded Error Triangular Meshes”, IEEE Int. Conf. on Image Processing, Kobe, Japan, October 1999, pp. 168-171.



no-pdf Garcia M. A., Vintimilla B. and Sappa A., “Approximation of Intensity Images with Adaptive Triangular Meshes: Towards a Processable Compressed Representation”, Irish Machine Vision and Image Processing Conference, Dublin, Ireland, September 1999.



ICRA1999 Garcia M. A., Sappa A. and Basañez L., “Efficient Generation of Object Hierarchies from 3D Scenes”, IEEE Int. Conf. on Robotics and Automation, Detroit, USA, pp. 1359-1364, May 1999.



BMVC1998 Garcia M. A., Velázquez S. and Sappa A., “A Two-Stage Algorithm for Planning the Next View from Range Images”, 9th British Machine Vision Conference, Southampton, UK, pp. 720-729, September 1998.



ICRA1998 Garcia M. A., Velázquez S., Sappa A. and Basañez L., “Autonomous Sensor Planning for 3D Reconstruction of Complex Objects from Range Images”, IEEE Int. Conf. on Robotics and Automation, Leuven, Belgium, pp. 3085-3090, May 1998.



CVPR1997 Garcia M. A., Sappa A. and Basañez L., “Efficient Approximation of Range Images Through Data Dependent Adaptive Triangulations”, IEEE Int. Conf. on Computer Vision and Pattern Recognition, San Juan, Puerto Rico, pp. 628-633, June 1997.



ICRA1997 Garcia M. A., Sappa A. and Basañez L., “Fast Generation of Adaptive Quadrilateral Meshes from Range Images”, IEEE Int. Conf. on Robotics and Automation, Albuquerque, USA, pp. 2813-2818, April 1997.





(cc) Angel D. Sappa 2003-2017 (Last update June
2017).
All materials can be used under Creative Commons Licence Attribution-Noncommercial 3.0.