Program

Invited speaker

Prof. Luc Florack, Department of Mathematics and Computer Science, Eindhoven University of Technology.

Generic Multi-Scale Representations for Visual Perception and Image Understanding

Abstract

The visual system operates at multiple levels of resolution simultaneously. Also in image processing and analysis multi-resolution paradigms have turned out to be a conditio sine qua non, because they render basic operations such as point sampling and differentiation well-posed. Various multi-resolution paradigms have been formulated, both in a linear as well as in a nonlinear setting. These invariably rely on axioms that reflect basic invariance requirements and the algebraic framework of preference, and typically on some implicit additional assumptions. A frequently adopted implicit assumption concerns the geometry of base and target manifolds, the Euclidean natures of which are often taken for granted.

In this presentation I will extend the so-called Gaussian scale space paradigm for Euclidean space to a general Riemannian base manifold and also account for the codomain by considering the extension into a so-called fibre bundle structure. I will elaborate on aspects of parametrization and gauge, as these are important in practical applications. I will scrutinize some examples that are of interest in bio-mathematical modeling, viz. (i) scale space on the unit sphere, used among others for codomain regularization in the context of high angular resolution diffusion imaging (HARDI), (ii) pseudo-linear scale space, which is a non-linear adaptation of the linear paradigm that may potentially account for physically realistic non-linear signal transfer, (iii) log-Euclidean scale space, a formalism for positive definite matrix fields such as encountered in the context of diffusion tensor imaging (DTI), and (iv) retino-cortical scale space, proposed as a biologically plausible model of the human visual pathway from retina to striate cortex.

I will end by speculating on the relevance of the proposed geometric adaptation mechanisms for visual perception, and conjecture that these might well provide quantitative explanations and predictive models for hitherto unknown mechanisms underlying certain visual illusions.

Poster Session I

1. The New Video Coding Standard H.264/Advanced Video Coding
   Luís M. O. Matos, António J. R. Neves and Armando J. Pinho

2. Road Surface Cracks Detection Using Unsupervised Strategies
   Henrique Oliveira and Paulo Lobato Correia

3. Detection of the Left Ventricle of the Heart in Ultrasound Images Using Deep Neural Networks
   Gustavo Carneiro and Jacinto C. Nascimento

4. Automatic Visual Inspection Using Delaunay Triangulation
   João F. A. C. F. Freire and J. R. Caldas Pinto

5. Classification of Pulmonary Emphysema from Computed Tomography Images
   Verónica Vasconcelos, João Barroso and José Silvestre Silva

6. Building Medical Image Repositories and CAD Systems on Grid Infrastructures: A Mammograms Case
   Raúl Ramos Pollán, Miguel Angel Guevara López, Manuel Rubio del Solar, Jose Miguel Franco Valiente, Joaquín Engelmo Moriche, Naimy Gonzalez de Posada, Jose Armando Valdes Torres and Mario Augusto Pires Vaz

7. Enhancement of Evoked Potential Response Signal Using Singular Spectrum Analysis
   Ana Teixeira, Nuno Figueiredo, A.M. Tomé and P. Georgieva and Isabel Santos

8. Identification of Stress States from ECG Signals Using Unsupervised Learning Methods
   Liliana Medina and Ana L. N. Fred

9. Arbitrary Ball Detection Using the Circular Hough Transform
   Bruno M. M. Ribeiro, Daniel A. Martins, António J. R. Neves and Armando J. Pinho

10. A Novel Formed Classifier for Analyzing Zooplankton Gonadic Cells Images
    Miguel Angel Guevara López, Naimy González de Posada, Juliana Rodrigues Gadelha and Fernando Manuel Raposo Morgado

11. Facial Emoticons – Facial Expressions as a Means of Interaction
    Sandra Gama and Daniel Gonçalves

12. Automating Repetitive Tasks in User Interaction
    Gabriel Barata, Tiago Guerreiro and Daniel Gonçalves

13. Interfaces and Visualization in Clinical Endoscopy
    Rui Melo and João P. Barreto

14. A SIFT Extension to Radial Distorted Images
    Miguel Lourenco and João P. Barreto

Oral Session

Recognizing Faces Using 3D Reconstruction
Manuel Marques and João Costeira

Poster Session II

1. Background Subtraction based on Rank Constraint for Point Trajectories
   Aamir Ahmad and Pedro Lima

2. Towards Scalable Evidence Accumulation Clustering
   André Lourenco and Ana Fred

3. Geometrical Consistent Clustering of Linear Subspaces
   Nuno Pinho da Silva João P. Costeira

4. Segmentação do Fígado para Transplante a Partir de Dadores Vivos
   Luís Guilherme Marques, José Silvestre Silva, Pedro Belo-Soares, Filipe Caseiro-Alves

5. GeniusPhone: Extracting and Relating Relevant Personal Information
   João Guerreiro, Tiago Guerreiro and Daniel Gonçalves

6. Corneal Nerves Identification for Earlier Diagnosis and Follow-up of Diabetic Neuropathy
   Ana Ferreira, António Miguel Morgado and José Silvestre Silva

7. ABC of a Surveillance System
   H. Gomes, B. Silva and N. Martins

8. A Software Application to Support the Development and Evaluation of Visualization Methods for Left Ventricle Analysis
   Samuel Silva, Joaquim Madeira, Beatriz Sousa Santos and Augusto Silva

9. Sparse Simplex for Compressed Sensing
   José M. N. Vieira and Dorabella Santos

10. Tracking People and Activities in Video Recordings of Classroom Presentations
    João Pacheco, Joaquim Jorge and Jorge S. Marques

11. Cooperative Eye-in-hand/Stereo Eye-to-hand Visual Servoing
    P. M. R. Morgado, J. R. Caldas Pinto, J. M. M. Martins and P. J. S. Gonçalves

12. Motion Modeling Using Mixture of Vector Fields
    Jacinto C. Nascimento, Mário A. T. Figueiredo and Jorge S. Marques

13. Assessing Control Modalities Designed for Pan-Tilt Surveillance Cameras
    Diogo Vicente, Jacinto C. Nascimento and José Gaspar

Poster Session III

1. Flames Spectrum Estimation Based on Gaussian Mixtures: A Bayesian Approach
   F. Ferro, J. Sanches and E. C. Fernandes

2. Denoising of Fluorescence Confocal Image Sequences: A Comparison Study
   Isabel Rodrigues and João Sanches

3. Photobleaching and Photoblinking Model Describing Intensity Fading in LSFCM Images
   Isabel Rodrigues and João Sanches

4. Automatic Diagnosis of Liver Steatosis by Ultrasound Using Autoregressive Tissue Characterization
   Ricardo Ribeiro, Rodrigo Ventura and João Sanches

5. Chromosome Pairing Using Mutual Information in Bone Marrow Cells
   Artem Khmelinskii, Rodrigo Ventura and João Sanches

6. Usefulness of Ultrasonic Speckle Decomposition Procedure for Tissue Characterization
   José Seabra and João Sanches

7. Toward the Development of a Web Ultrasonic Plaque Analysis (WUPA) Tool
   José Seabra, João Sanches and Luís Pedro

8. Local v.s. Global Factorization Methods
   Ricardo Ferreira, João Xavier and João Costeira

9. Automatic Identification and Characterization of Military Vehicles
   José Dias and J.R. Caldas Pinto

10. Cancer Cell Detection and Invasion Depth Estimation in Brightfield Images
    Pedro Quelhas, Monica Marcuzzo, Maria J. Oliveira, Aurélio Campilho and Ana M. Mendonça

11. An Experiment on Feature Selection for Sparse Data
    Artur Ferreira, José Bioucas-Dias and Mário Figueiredo

12. Automated Identification and Characterization of Small-scale Polygons in the Northern Plains of Mars
    José Saraiva, Lourenço Bandeira, Nuno Benavente and Pedro Pina

13. Remote Computation of Size Features on Images of Martian Soils Acquired by the Mars Exploration Rovers
    Cristina Lira, José Saraiva, Lourenço Bandeira, Nuno Benavente and Pedro Pina

Poster Session IV

1. Color Marker Segmentation in Biomechanics Applications
   N. Cunha, M. Moreira, A.S.P. Varejão, L. Costa, J. Pereira, P. Couto, P. Melo-Pinto, J. Bulas-Cruz, L. Magalhães and V. Filipe

2. Multi-scale Keypoint Annotation - A Biological Approach
   Miguel Farajota, João Rodrigues and J.M.H. du Buf

3. Detection of Dune Fields on Mars Using HOG Features and a SVM Classifier
   L. Bandeira, J.S. Marques, P. Pina and J. Saraiva

4. ARMA Estimation – A Comparison Study for fMRI
   David Afonso and João Sanches

5. MBPGPU: A Supervised Pattern Classifier for Graphical Processing Units
   Noel Lopes and Bernardete Ribeiro

6. Fault Detection in Yarn Input Tension Waveforms Using a Match Pursuit Approach
   André Catarino, Ana Maria Rocha and João L. Monteiro

7. Towards Fully Automated Learning of Grasping Affordances
   Christian Wressnegger, Ashish Jain, Misel Batmendijn, Manuel Lopes, Luis Montesano, Alexandre Bernardino and Jose Santos-Victor

8. Bayesian Estimation of Perfusion Using PASL-MRI
   Juliane Farthouat, João Sanches and Patrícia Figueiredo

9. Blind Deblurring of Two-layer Images
   Mariana S. C. Almeida and Luís B. Almeida

10. Identifying Obstacles in the RoboCup Middle Size League
    João Silva, António J. R. Neves, Nuno Lau

11. Optimizing Sampling Strategies for Perfusion Quantification Using PASL
    Inês Sousa, João Sanches and Patrícia Figueiredo

12. Bootstrapping Visual Memories for a Humanoid Robot
    Giovanni Saponaro and Alexandre Bernardino

13. Fuzzy Clustering of Fuzzy Rules – A Methodology to Organize Fuzzy Systems
    Paulo Salgado and Manuela Cunha