2008 5th Latin American Robotics Symposium (LARS 2008) Salvador, Bahia, Brazil 29 – 30 October 2008 IEEE Catalog Number: ISBN: CFP08LAR-PRT 978-1-4244-3379-7 TABLE OF CONTENTS ROBOT COMPETITIONS Mixed Reality RoboCup Category - An Overview of FURGBOL-PV Contributions...................................1 Mariane Mendes Medeiros, Rafael Gonçalves Colares, Renan Rosado De Almeida, Gisele Moraes Simas, Eder Mateus Nunes Gonçalves, Silvia Silva Da Costa Botelho Robust and Efficient Embedded Vision for Aibo in Robocup.........................................................................6 D. Herrero-Pérez, H. Martínez-Barberá RoboCup Small-size League: Using Neural Networks to Learn Color Segmentation During Visual Processing...............................................................................................................................................12 Ernesto Torres, Alfredo Weitzenfeld Team Agent Behavior Architecture in Robot Soccer.....................................................................................18 Myriam Arias Ruiz, Jorge Ramirez Uresti ROBOT VISION Visual Selective Attention Model for Robot Vision........................................................................................24 Milton Roberto Heinen, Paulo Martins Engel Vision-Based Outdoor Navigation Using Mobile Robots...............................................................................30 Denis F. Wolf, Celio N.S. Netto Real-Time Neural Network Based Color Classifier .......................................................................................35 Éder Augusto Penharbel, Ben Hur Gonçalves, Roseli Aparecida Francelin Romero A Robotic Vision System Using a Modified Hough Transform to Perform Weld Line Detection on Storage Tanks..............................................................................................................................40 Lucas Molina, Elyson A.N. Carvalho, Eduardo O. Freire, Jugurta R. Montalvão-Filho, Flávio De A. Chagas ROBOT CONTROL Nonlinear Modeling, Identification and Control for a Simulated Miniature Helicopter............................46 Ener Diniz Beckmann, Geovany Araújo Borges Experimental Implementation of the Cascade Controller with Adaptive Dead-Zone Compensation Applied to a Hydraulic Robot.................................................................................................52 Claudio L.D. Machado, Victor J. De Negri, Mauro A.B. Cunha Stabilization of a Wheeled Inverted Pendulum by a Continuous-Time Infinite-Horizon LQG Optimal Controller..................................................................................................................................58 Luis F Lupian, Rodrigo Avila An Intelligent Adaptive Controller..................................................................................................................63 Magno Cavalcante, Leizer Schnitman, Augusto Loureiro ROBOT LOCALIZATION Real-Time Robot Localization in Indoor Environments Using Structural Information ............................68 Pablo Espinace, Alvaro Soto, Miguel Torres-Torriti Robust State-Space Estimation for Mobile Robot Localization....................................................................74 Roberto Santos Inoue, Marco Henrique Terra, Valdir Grassi Jr. SLAM in Underwater Environment Using SIFT and Topologic Maps........................................................80 Paulo Drews Jr., Silvia Botelho, Sebastião Gomes Execution Monitoring Applied to Data Estimation Processes.......................................................................86 Eduardo O. Freire, Elyson A. N. Carvalho, Carlos A.V. Cardoso, Benedito A. Luciano LEGGED ROBOTS 5-link Bipedal Robot Stabilized by Means of Dorsal Movement Compensation .........................................92 Luiz R. Douat, Eugênio B. Castelan, Ubirajara F. Moreno Morphology and Gait Control Evolution of Legged Robots .........................................................................98 Milton Roberto Heinen, Fernando Santos Osório Cooperative Path Planning for a Heterogeneous Robotic System Composed of a Humanoid Robot and a Wheel Robot............................................................................................................104 Andre M. Santana, Adelardo A.D. Medeiros Reflexive Behavior for a Four-Legged Mobile Robot Using Fuzzy Logic..................................................110 Luis E.M. Lima, Paulo F.S. Amaral, Antônio B. Filho ROBOT DEVELOPMENT AND SIMULATION Diagnostic Robotic Agent in the RoboEduc Environment for Educational Robotics ...............................116 Alzira F. Silva, Renata P. Barros, Samuel O. Azevedo, Akynara Silva, Luiz M.G. Gonçalves MecaTeam Framework: An Infrastructure for the Development of Soccer Agents for Simulated Robots ............................................................................................................................................122 Orivaldo Vieira Santana Jr., Christina Von Flach Garcia Chavez, Augusto Loureiro Da Costa Dynamic Modelling of a Quadrotor Aerial Vehicle with Nonlinear Inputs ...............................................128 Armando S. Sanca, Pablo J. Alsina, Jés De Jesus F. Cerqueira APPLICATION OF ROBOT TECHNOLOGIES Human Detection Using Thermopiles............................................................................................................134 José Luis Honorato, Ignacio Spiniak, Miguel Torres-Torriti Effective Pedestrian Detection and Counting at Bus Stops .........................................................................141 Guillermo García-Bunster, Miguel Torres-Torriti Adaptive Knee Joint Control for an Active Amputee Prosthesis................................................................147 Glauco Garcia Scandaroli, Geovany Araujo Borges, Adson Ferreira Da Rocha, Francisco Assis De Oliveira Nascimento TATUBOT – Robotic System for Inspection of Undergrounded Cable System........................................153 Claudio Mello Jr., Eder Mateus Gonçalves, Emanuel Estrada, Gabriel Oliveira, Humberto Souto Jr., Renan Almeida, Silvia Botelho, Thiago Santos, Vinícius Oliveira ROBOT ARCHITECTURES AND TASK CONTROL Variable Utility in Multi-robot Task Allocation Systems ............................................................................159 Guilherme S. Bastos, Carlos Henrique C. Ribeiro, Luiz Edival De Souza A Five-layers Open-Architecture Robot Controller Applied to Interaction Tasks ...................................164 André Schneider de Oliveira, Edson Roberto De Pieri, Daniel Martins, Ubirajara Franco Moreno Deadline Missing Prediction in Systems Based on Distributed Threads....................................................170 Patricia Della Méa Plentz, Carlos Montez, Rômulo Silva De Oliveira MaeRobot: An Open Source Test Platform for Prototyping Robots..........................................................176 Thiago De F.O. Araújo, Miguel A. De S. Falcão, Antonio M.N. Lima, Clarissa F.C.L. Loureiro Author Index