Pattern Recognition and Image Analysis: 4th Iberian Conference, IbPRIA 2009 Póvoa de Varzim, Portugal, June 10-12, 2009 Proceedings

Front Matter....Pages -
Inference and Learning for Active Sensing, Experimental Design and Control....Pages 1-10
Large Scale Online Learning of Image Similarity through Ranking....Pages 11-14
Inpainting Ideas for Image Compression....Pages 15-15
Improving Scene Recognition through Visual Attention....Pages 16-23
Smoothed Disparity Maps for Continuous American Sign Language Recognition....Pages 24-31
Human Action Recognition Using Optical Flow Accumulated Local Histograms....Pages 32-39
Trajectory Modeling Using Mixtures of Vector Fields....Pages 40-47
High-Speed Human Detection Using a Multiresolution Cascade of Histograms of Oriented Gradients....Pages 48-55
Face-to-Face Social Activity Detection Using Data Collected with a Wearable Device....Pages 56-63
Estimating Vehicle Velocity Using Image Profiles on Rectified Images....Pages 64-71
Kernel Based Multi-object Tracking Using Gabor Functions Embedded in a Region Covariance Matrix....Pages 72-79
Autonomous Configuration of Parameters in Robotic Digital Cameras....Pages 80-87
Facial Reconstruction and Alignment Using Photometric Stereo and Surface Fitting....Pages 88-95
Facial Feature Extraction and Change Analysis Using Photometric Stereo....Pages 96-103
Match Selection in Batch Mosaicing Using Mutual Information....Pages 104-111
Space Carving Acceleration Using Uncertainty Measurements....Pages 112-119
Mean Shift Parallel Tracking on GPU....Pages 120-127
Local Boosted Features for Pedestrian Detection....Pages 128-135
Plane Filtering for the Registration of Urban Range Laser Imagery....Pages 136-143
Real-Time Motion Detection for a Mobile Observer Using Multiple Kernel Tracking and Belief Propagation....Pages 144-151
Robust and Efficient Multipose Face Detection Using Skin Color Segmentation....Pages 152-159
Contour Regularity Extraction Based on String Edit Distance....Pages 160-167
Cell Division Detection on the Arabidopsis Thaliana Root....Pages 168-175
HOG-Based Decision Tree for Facial Expression Classification....Pages 176-183
Class Representative Visual Words for Category-Level Object Recognition....Pages 184-191
Multi-Scale Image Analysis Applied to Radioastronomical Interferometric Data....Pages 192-199
Robust Statistical Estimation Applied to Automatic Lip Segmentation....Pages 200-207
Textural Features for Hyperspectral Pixel Classification....Pages 208-216
A New Clustering Algorithm for Color Image Segmentation....Pages 217-224
A Top-Down Approach for Automatic Dropper Extraction in Catenary Scenes....Pages 225-232
A Scale Invariant Interest Point Detector for Discriminative Blob Detection....Pages 233-240
Enhancing In-Vitro IVUS Data for Tissue Characterization....Pages 241-248
Toward Robust Myocardial Blush Grade Estimation in Contrast Angiography....Pages 249-256
Multi-spectral Texture Characterisation for Remote Sensing Image Segmentation....Pages 257-264
Texture Measuring by Means of Perceptually-Based Fineness Functions....Pages 265-272
High Performance Circle Detection through a GPU Rasterization Approach....Pages 273-281
Appearance and Shape Prior Alignments in Level Set Segmentation....Pages 282-289
The Diagonal Split: A Pre-segmentation Step for Page Layout Analysis and Classification....Pages 290-297
Robust Super-Resolution Using a Median Filter for Irregular Samples....Pages 298-305
Left Ventricle Segmentation from Heart MDCT....Pages 306-313
A Comparison of Wavelet Based Spatio-temporal Decomposition Methods for Dynamic Texture Recognition....Pages 314-321
A Fast Anisotropic Mumford-Shah Functional Based Segmentation....Pages 322-329
Labeling Still Image Databases Using Graphical Models....Pages 330-337
AdaBoost Multiple Feature Selection and Combination for Face Recognition....Pages 338-345
Median Graph Computation by Means of a Genetic Approach Based on Minimum Common Supergraph and Maximum Common Subgraph....Pages 346-353
Fatty Liver Characterization and Classification by Ultrasound....Pages 354-361
Sleep/Wakefulness State from Actigraphy....Pages 362-369
A Random Extension for Discriminative Dimensionality Reduction and Metric Learning....Pages 370-377
Minimum Error-Rate Training in Statistical Machine Translation Using Structural SVMs....Pages 378-385
Morpheme-Based Automatic Speech Recognition of Basque....Pages 386-393
On a Kernel Regression Approach to Machine Translation....Pages 394-401
Experimental Analysis of Insertion Costs in a Naïve Dynamic MDF-Tree....Pages 402-408
An Approach to Estimate Perplexity Values for Language Models Based on Phrase Classes....Pages 409-416
An Adaptive Approach for Affine-Invariant 2D Shape Description....Pages 417-424
Towards Real-Time Human Action Recognition....Pages 425-432
Using One-Class Classification Techniques in the Anti-phoneme Problem....Pages 433-440
Index of Balanced Accuracy: A Performance Measure for Skewed Class Distributions....Pages 441-448
Chromatographic Pattern Recognition Using Optimized One-Class Classifiers....Pages 449-456
Variable Order Finite-Context Models in DNA Sequence Coding....Pages 457-464
Characterizing Graphs Using Spherical Triangles....Pages 465-472
Score Fusion by Maximizing the Area under the ROC Curve....Pages 473-480
Gender Recognition from a Partial View of the Face Using Local Feature Vectors....Pages 481-488
Melodic Track Identification in MIDI Files Considering the Imbalanced Context....Pages 489-496
Bernoulli HMMs at Subword Level for Handwritten Word Recognition....Pages 497-504
Simultaneous Identity and Expression Recognition Using Face Geometry on Low Dimensional Manifolds....Pages 505-512
Back Matter....Pages -