Hélio Pedrini
Orcid: 0000-0003-0125-630XAffiliations:
- University of Campinas, Institute of Computing
According to our database1,
Hélio Pedrini
authored at least 256 papers
between 2001 and 2024.
Collaborative distances:
Collaborative distances:
Timeline
Legend:
Book In proceedings Article PhD thesis Dataset OtherLinks
Online presence:
On csauthors.net:
Bibliography
2024
Tell me what you see: A zero-shot action recognition method based on natural language descriptions.
Multim. Tools Appl., March, 2024
P-NOC: Adversarial training of CAM generating networks for robust weakly supervised semantic segmentation priors.
J. Vis. Commun. Image Represent., 2024
Comput. Geosci., 2024
CoRR, 2024
CoRR, 2024
Comput. Graph., 2024
Proceedings of the 19th International Joint Conference on Computer Vision, 2024
Proceedings of the 19th International Joint Conference on Computer Vision, 2024
Proceedings of the 19th International Joint Conference on Computer Vision, 2024
Proceedings of the 19th International Joint Conference on Computer Vision, 2024
Zero-Shot Synth-to-Real Depth Estimation: From Synthetic Street Scenes to Real-World Data.
Proceedings of the 37th SIBGRAPI Conference on Graphics, Patterns and Images, 2024
Learning from Memory: Non-Parametric Memory Augmented Self-Supervised Learning of Visual Features.
Proceedings of the Forty-first International Conference on Machine Learning, 2024
An Effective Approach to Text Detection and Recognition in Degraded Historical Documents.
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2024
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2024
2023
Applying Graph Neural Networks to Support Decision Making on Collective Intelligent Transportation Systems.
IEEE Trans. Netw. Serv. Manag., December, 2023
TEMPROT: protein function annotation using transformers embeddings and homology search.
BMC Bioinform., December, 2023
Rethinking two-dimensional camera motion estimation assessment for digital video stabilization: A camera motion field-based metric.
Neurocomputing, November, 2023
Environ. Model. Softw., November, 2023
Comput. methods Biomech. Biomed. Eng. Imaging Vis., July, 2023
J. Signal Process. Syst., June, 2023
Comput. Graph., June, 2023
ACM Comput. Surv., 2023
CAPIVARA: Cost-Efficient Approach for Improving Multilingual CLIP Performance on Low-Resource Languages.
CoRR, 2023
CoRR, 2023
Proceedings of the 18th International Joint Conference on Computer Vision, 2023
Proceedings of the 18th International Joint Conference on Computer Vision, 2023
Proceedings of the IEEE International Conference on Visual Communications and Image Processing, 2023
Proceedings of the 36th SIBGRAPI Conference on Graphics, Patterns and Images, 2023
Proceedings of the IEEE Latin American Conference on Computational Intelligence, 2023
Adversarial Feature Hallucination in a Supervised Contrastive Space for Few-Shot Learning of Provenance in Paintings.
Proceedings of the IEEE Latin American Conference on Computational Intelligence, 2023
Proceedings of the 30th International Conference on Systems, Signals and Image Processing, 2023
Proceedings of the International Conference on Machine Learning and Applications, 2023
Proceedings of the International Conference on Machine Learning and Applications, 2023
Epileptic Electroencephalogram Signal Classification Based on Shearlet and Contourlet Transforms.
Proceedings of the International Conference on Machine Learning and Applications, 2023
Mandible Segmentation from CT and CBCT Images Based on a Patch-Based Convolutional Neural Network.
Proceedings of the International Conference on Machine Learning and Applications, 2023
SelfGraphVQA: A Self-Supervised Graph Neural Network for Scene-based Question Answering.
Proceedings of the IEEE/CVF International Conference on Computer Vision, 2023
Proceedings of the IEEE/CVF International Conference on Computer Vision, 2023
Proceedings of the IEEE/CVF International Conference on Computer Vision, 2023
MIA-3DCNN: A 3D Convolutional Neural Network for COVID-19 Detection and Severity Classification.
Proceedings of the IEEE International Conference on Acoustics, 2023
Residual Squeeze-and-Excitation U-Shaped Network for Minutia Extraction in Contactless Fingerprint Images.
Proceedings of the IEEE International Conference on Acoustics, 2023
Classification of Facial Images to Assist in the Diagnosis of Autism Spectrum Disorder: A Study on the Effect of Face Detection and Landmark Identification Algorithms.
Proceedings of the Intelligent Systems - 12th Brazilian Conference, 2023
Proceedings of the Intelligent Systems - 12th Brazilian Conference, 2023
Proceedings of the Intelligent Systems - 12th Brazilian Conference, 2023
Proceedings of the Intelligent Systems - 12th Brazilian Conference, 2023
Proceedings of the ArtsIT, Interactivity and Game Creation, 2023
2022
IEEE Signal Process. Lett., 2022
Weakly supervised attention-based models using activation maps for citrus mite and insect pest classification.
Comput. Electron. Agric., 2022
Appl. Artif. Intell., 2022
MinMax-CAM: Improving Focus of CAM-based Visualization Techniques in Multi-label Problems.
Proceedings of the 17th International Joint Conference on Computer Vision, 2022
Proceedings of the 35th SIBGRAPI Conference on Graphics, Patterns and Images, 2022
Multiscale Approach in Deep Convolutional Networks for Minutia Extraction from Contactless Fingerprint Images.
Proceedings of the 34th IEEE International Conference on Tools with Artificial Intelligence, 2022
Proceedings of the Pattern Recognition and Artificial Intelligence, 2022
Proceedings of the Image Analysis and Processing - ICIAP 2022, 2022
Proceedings of the Artificial Intelligence and Soft Computing, 2022
MinMax-CAM: Increasing Precision of Explaining Maps by Contrasting Gradient Signals and Regularizing Kernel Usage.
Proceedings of the Computer Vision, Imaging and Computer Graphics Theory and Applications, 2022
Proceedings of the XXIII Brazilian Symposium on Geoinformatics, 2022
Proceedings of the Intelligent Systems - 11th Brazilian Conference, 2022
2021
Weighted voting of multi-stream convolutional neural networks for video-based action recognition using optical flow rhythms.
J. Vis. Commun. Image Represent., 2021
Ecol. Informatics, 2021
CoRR, 2021
Proceedings of the IEEE Winter Conference on Applications of Computer Vision, 2021
Proceedings of the IEEE Symposium Series on Computational Intelligence, 2021
Protein secondary structure prediction based on fusion of machine learning classifiers.
Proceedings of the SAC '21: The 36th ACM/SIGAPP Symposium on Applied Computing, 2021
Proceedings of the SAC '21: The 36th ACM/SIGAPP Symposium on Applied Computing, 2021
Proceedings of the Image and Graphics - 11th International Conference, 2021
Proceedings of the IEEE/CVF International Conference on Computer Vision Workshops, 2021
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2021
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2021
Pyramidal Layered Scene Inference with Image Outpainting for Monocular View Synthesis.
Proceedings of the Computer Analysis of Images and Patterns, 2021
Proceedings of the Computer Analysis of Images and Patterns, 2021
Proceedings of the Computer Analysis of Images and Patterns, 2021
2020
Leveraging Shape, Reflectance and Albedo From Shading for Face Presentation Attack Detection.
IEEE Trans. Inf. Forensics Secur., 2020
Math. Comput. Sci., 2020
J. Vis. Commun. Image Represent., 2020
Int. J. Pattern Recognit. Artif. Intell., 2020
Neurocomputing, 2020
A comparative analysis of Bayesian network structure learning algorithms applied to crime data.
Intell. Data Anal., 2020
EURASIP J. Image Video Process., 2020
Multi-channel MR Reconstruction (MC-MRRec) Challenge - Comparing Accelerated MR Reconstruction Models and Assessing Their Genereralizability to Datasets Collected with Different Coils.
CoRR, 2020
Comput. methods Biomech. Biomed. Eng. Imaging Vis., 2020
CLEI Electron. J., 2020
Detection and classification of lung nodules in chest X-ray images using deep convolutional neural networks.
Comput. Intell., 2020
ImTeNet: Image-Text Classification Network for Abnormality Detection and Automatic Reporting on Musculoskeletal Radiographs.
Proceedings of the Advances in Bioinformatics and Computational Biology, 2020
Proceedings of the Fifth Conference on Machine Translation, 2020
Multi-stream Architecture with Symmetric Extended Visual Rhythms for Deep Learning Human Action Recognition.
Proceedings of the 15th International Joint Conference on Computer Vision, 2020
Proceedings of the 15th International Joint Conference on Computer Vision, 2020
Filter Learning from Deep Descriptors of a Fully Convolutional Siamese Network for Tracking in Videos.
Proceedings of the 15th International Joint Conference on Computer Vision, 2020
Self-supervised Depth Estimation based on Feature Sharing and Consistency Constraints.
Proceedings of the 15th International Joint Conference on Computer Vision, 2020
Fusion of BLAST and Ensemble of Classifiers for Protein Secondary Structure Prediction.
Proceedings of the 33rd SIBGRAPI Conference on Graphics, Patterns and Images, 2020
Proceedings of the 33rd SIBGRAPI Conference on Graphics, Patterns and Images, 2020
DuaLAnet: Dual Lesion Attention Network for Thoracic Disease Classification in Chest X-Rays.
Proceedings of the 2020 International Conference on Systems, Signals and Image Processing, 2020
Ensemble of Bidirectional Recurrent Networks and Random Forests for Protein Secondary Structure Prediction.
Proceedings of the 2020 International Conference on Systems, Signals and Image Processing, 2020
Proceedings of the Advances in Visual Computing - 15th International Symposium, 2020
Proceedings of the 2nd International Conference of the DFG International Research Training Group 2057, 2020
Proceedings of the 25th International Conference on Pattern Recognition, 2020
Parallax Motion Effect Generation Through Instance Segmentation And Depth Estimation.
Proceedings of the IEEE International Conference on Image Processing, 2020
Proceedings of the Computer Vision, Imaging and Computer Graphics Theory and Applications, 2020
Proceedings of the Computer Vision, Imaging and Computer Graphics Theory and Applications, 2020
Weakly Supervised Learning Guided by Activation Mapping Applied to a Novel Citrus Pest Benchmark.
Proceedings of the 2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition, 2020
Proceedings of the IEEE Canadian Conference on Electrical and Computer Engineering, 2020
Evaluation and Detection of Gaps in Curved Sugarcane Planting Lines in Aerial Images.
Proceedings of the IEEE Canadian Conference on Electrical and Computer Engineering, 2020
2019
IEEE Geosci. Remote. Sens. Lett., 2019
Improved person re-identification based on saliency and semantic parsing with deep neural network models.
Image Vis. Comput., 2019
Proceedings of the 14th International Joint Conference on Computer Vision, 2019
Proceedings of the 14th International Joint Conference on Computer Vision, 2019
Proceedings of the 2019 IEEE International Conference on Systems, Man and Cybernetics, 2019
Proceedings of the 2019 IEEE International Conference on Systems, Man and Cybernetics, 2019
Audio-Visual Emotion Recognition Using a Hybrid Deep Convolutional Neural Network based on Census Transform.
Proceedings of the 2019 IEEE International Conference on Systems, Man and Cybernetics, 2019
Fight Detection in Video Sequences Based on Multi-Stream Convolutional Neural Networks.
Proceedings of the 32nd SIBGRAPI Conference on Graphics, Patterns and Images, 2019
Dynamic Facial Expression Recognition Based on Visual Rhythms and Motion History Images.
Proceedings of the Machine Learning and Data Mining in Pattern Recognition, 2019
Deep Convolutional Multi-Stream Network Detection System Applied to Fall Identi?cation in Video Sequences.
Proceedings of the Machine Learning and Data Mining in Pattern Recognition, 2019
Annotating Biodiversity Spreadsheets through 5W1H based on Machine Learning.
Proceedings of the Machine Learning and Data Mining in Pattern Recognition, 2019
Estimation of Fingerprint Image Quality Based on Neighborhood Strengthness Homogeneity.
Proceedings of the International Conference on Systems, Signals and Image Processing, 2019
Proceedings of the International Conference on Systems, Signals and Image Processing, 2019
Where are the People? A Multi-Stream Convolutional Neural Network for Crowd Counting via Density Map from Complex Images.
Proceedings of the International Conference on Systems, Signals and Image Processing, 2019
Multi-Stream Deep Convolutional Network Using High-Level Features Applied to Fall Detection in Video Sequences.
Proceedings of the International Conference on Systems, Signals and Image Processing, 2019
Proceedings of the 31st IEEE International Conference on Tools with Artificial Intelligence, 2019
Learnable Visual Rhythms Based on the Stacking of Convolutional Neural Networks for Action Recognition.
Proceedings of the 18th IEEE International Conference On Machine Learning And Applications, 2019
Fall Detection in Video Sequences Based on a Three-Stream Convolutional Neural Network.
Proceedings of the 18th IEEE International Conference On Machine Learning And Applications, 2019
Bimodal Emotion Recognition Based on Audio and Facial Parts Using Deep Convolutional Neural Networks.
Proceedings of the 18th IEEE International Conference On Machine Learning And Applications, 2019
Pelee-Text: A Tiny Convolutional Neural Network for Multi-oriented Scene Text Detection.
Proceedings of the 18th IEEE International Conference On Machine Learning And Applications, 2019
Age Estimation From Facial Parts Using Compact Multi-Stream Convolutional Neural Networks.
Proceedings of the 2019 IEEE/CVF International Conference on Computer Vision Workshops, 2019
Human Action Recognition Using Convolutional Neural Networks with Symmetric Time Extension of Visual Rhythms.
Proceedings of the Computational Science and Its Applications - ICCSA 2019, 2019
Proceedings of the 14th International Joint Conference on Computer Vision, 2019
Improving Semantic Segmentation of 3D Medical Images on 3D Convolutional Neural Networks.
Proceedings of the XLV Latin American Computing Conference, 2019
2018
Signal Image Video Process., 2018
Multim. Tools Appl., 2018
Improvement of global motion estimation in two-dimensional digital video stabilisation methods.
IET Image Process., 2018
EURASIP J. Image Video Process., 2018
Comput. Methods Programs Biomed., 2018
Comput. methods Biomech. Biomed. Eng. Imaging Vis., 2018
Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2018), 2018
Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2018), 2018
Proceedings of the 25th International Conference on Systems, Signals and Image Processing, 2018
Multi-stream Convolutional Neural Networks for Action Recognition in Video Sequences Based on Adaptive Visual Rhythms.
Proceedings of the 17th IEEE International Conference on Machine Learning and Applications, 2018
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2018
Recognition of Genetic Disorders Based on Deep Features and Geometric Representation.
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2018
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2018
Proceedings of the 2018 IEEE Canadian Conference on Electrical & Computer Engineering, 2018
2017
J. Signal Process. Syst., 2017
Action identification using a descriptor with autonomous fragments in a multilevel prediction scheme.
Signal Image Video Process., 2017
Human Action Classification Based on Silhouette Indexed Interest Points for Multiple Domains.
Int. J. Image Graph., 2017
Electroencephalogram signal classification based on shearlet and contourlet transforms.
Expert Syst. Appl., 2017
Appl. Artif. Intell., 2017
Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2017) - Volume 4: VISAPP, Porto, Portugal, February 27, 2017
Shot boundary detection for video temporal segmentation based on the weber local descriptor.
Proceedings of the 2017 IEEE International Conference on Systems, Man, and Cybernetics, 2017
Proceedings of the 2017 IEEE International Conference on Systems, Man, and Cybernetics, 2017
Proceedings of the 2017 IEEE International Conference on Systems, Man, and Cybernetics, 2017
Proceedings of the 30th SIBGRAPI Conference on Graphics, Patterns and Images, 2017
Proceedings of the 16th IEEE International Conference on Machine Learning and Applications, 2017
Proceedings of the Image Analysis and Processing - ICIAP 2017, 2017
Proceedings of the 2017 IEEE International Conference on Acoustics, 2017
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2017
2016
IEEE Trans. Inf. Forensics Secur., 2016
J. Electronic Imaging, 2016
Geometrical Features and Active Appearance Model Applied to Facial Expression Recognition.
Int. J. Image Graph., 2016
Expert Syst. Appl., 2016
Inferring patterns in mitochondrial DNA sequences through hypercube independent spanning trees.
Comput. Biol. Medicine, 2016
Appl. Soft Comput., 2016
Proceedings of the New Advances in Information Systems and Technologies, 2016
A learning-based single-image super-resolution method for very low quality license plate images.
Proceedings of the 2016 IEEE International Conference on Systems, Man, and Cybernetics, 2016
Proceedings of the 2016 IEEE International Conference on Systems, Man, and Cybernetics, 2016
Proceedings of the 2016 IEEE International Conference on Systems, Man, and Cybernetics, 2016
Proceedings of the Advances in Visual Computing - 12th International Symposium, 2016
Proceedings of the 2016 IEEE International Conference on Acoustics, 2016
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2016
Automatic Fruit and Vegetable Recognition Based on CENTRIST and Color Representation.
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2016
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2016
2015
IEEE Trans. Vis. Comput. Graph., 2015
IEEE Trans. Image Process., 2015
IEEE Trans. Inf. Forensics Secur., 2015
IEEE Trans. Inf. Forensics Secur., 2015
A topology-based approach to computing neighborhood-of-interest points using the Morse complex.
J. Vis. Commun. Image Represent., 2015
J. Vis. Commun. Image Represent., 2015
Effects of cultural characteristics on building an emotion classifier through facial expression analysis.
J. Electronic Imaging, 2015
Int. J. Image Graph., 2015
Faster Approximations of Shortest Geodesic Paths on Polyhedra Through Adaptive Priority Queue.
Proceedings of the VISAPP 2015, 2015
A Self-adaptation Method for Human Skin Segmentation based on Seed Growing.
Proceedings of the VISAPP 2015, 2015
Proceedings of the 28th SIBGRAPI Conference on Graphics, Patterns and Images, 2015
Proceedings of the 28th SIBGRAPI Conference on Graphics, Patterns and Images, 2015
Proceedings of the Advances in Visual Computing - 11th International Symposium, 2015
A verify-correct approach to person re-identification based on Partial Least Squares signatures.
Proceedings of the International Conference on Biometrics, 2015
Proceedings of the 7th Conference on High-Performance Graphics, 2015
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2015
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2015
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2015
Proceedings of the IEEE Congress on Evolutionary Computation, 2015
Proceedings of the Computer Analysis of Images and Patterns, 2015
2014
Linear dimensionality reduction applied to scale invariant feature transformation and speeded up robust feature descriptors.
J. Electronic Imaging, 2014
CoRR, 2014
Proceedings of the Advances in Visual Computing - 10th International Symposium, 2014
Proceedings of the 2014 IEEE International Conference on Image Processing, 2014
Proceedings of the IEEE International Conference on Acoustics, 2014
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2014
2013
IEEE Trans. Inf. Forensics Secur., 2013
Pattern Anal. Appl., 2013
Computer generated images vs. digital photographs: A synergetic feature and classifier combination approach.
J. Vis. Commun. Image Represent., 2013
Marching cubes technique for volumetric visualization accelerated with graphics processing units.
J. Braz. Comput. Soc., 2013
Neurocomputing, 2013
Int. J. Image Graph., 2013
EURASIP J. Image Video Process., 2013
Proceedings of the International Conference on Biometrics, 2013
Proceedings of the 10th IEEE International Conference and Workshops on Automatic Face and Gesture Recognition, 2013
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2013
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2013
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2013
Proceedings of the IEEE Congress on Evolutionary Computation, 2013
2012
J. Electronic Imaging, 2012
J. Comput. Sci. Technol., 2012
Semi-Supervised Dimensionality Reduction based on Partial Least Squares for Visual Analysis of High Dimensional Data.
Comput. Graph. Forum, 2012
Image Sequence Super-resolution based on Learning using Feature Descriptors.
Proceedings of the VISAPP 2012, 2012
Proceedings of the 25th SIBGRAPI Conference on Graphics, Patterns and Images, 2012
Scalar image interest point detection and description based on discrete Morse theory and geometric descriptors.
Proceedings of the 19th IEEE International Conference on Image Processing, 2012
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2012
2011
IEEE Trans. Vis. Comput. Graph., 2011
Ambiente Virtual Interativo com Colisão e Deformação de Objetos para Treinamento Médico.
RITA, 2011
Int. J. Image Graph., 2011
Proceedings of the 24th SIBGRAPI Conference on Graphics, 2011
Proceedings of the 18th IEEE International Conference on Image Processing, 2011
Proceedings of the 2011 IEEE International Joint Conference on Biometrics, 2011
Proceedings of the 2011 IEEE International Joint Conference on Biometrics, 2011
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2011
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2011
2010
Proceedings of the Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 2010
2009
An architecture for rendering Web 3D virtual environments on computers with limited graphic processing power.
Proceedings of the XV Brazilian Symposium on Multimedia and the Web, 2009
Proceedings of the Image Analysis and Recognition, 6th International Conference, 2009
2008
Satellite Image Segmentation Using Wavelet Transforms Based on Color and Texture Features.
Proceedings of the Advances in Visual Computing, 4th International Symposium, 2008
2007
Proceedings of the Progress in Pattern Recognition, 2007
2006
Comput. Graph. Forum, 2006
Textured Image Segmentation Based on Spatial Dependence using a Markov Random Field Model.
Proceedings of the International Conference on Image Processing, 2006
2004
Efficient Generation of Triangle Strips from Triangulated Meshes.
Proceedings of the 12-th International Conference in Central Europe on Computer Graphics, 2004
Texture classification based on spatial dependence features using co-occurrence matrices and markov random fields.
Proceedings of the 2004 International Conference on Image Processing, 2004
Proceedings of the International Conference on Computer Vision and Graphics, 2004
2002
Proceedings of the 10-th International Conference in Central Europe on Computer Graphics, 2002
Proceedings of the 15th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2002), 2002
Fitting smooth surfaces to scattered 3D data using piecewise quadratic approximation.
Proceedings of the 2002 International Conference on Image Processing, 2002
2001
An Improved Refinement and Decimation Method for Adaptive Terrain Surface Approximation.
Proceedings of the 9-th International Conference in Central Europe on Computer Graphics, 2001
Proceedings of the 2001 International Conference on Image Processing, 2001
Proceedings of the 11th International Conference on Image Analysis and Processing (ICIAP 2001), 2001
Proceedings of the Computer Analysis of Images and Patterns, 9th International Conference, 2001