This book includes the thoroughly refereed post-conference proceedings of the 15th Annual RoboCup International Symposium, held in Istanbul, Turkey, in July 2011.
The 12 revised papers and 32 poster presentation presented were carefully reviewed and selected from 97 submissions. The papers are orginazed on topical sections on robot hardware and software, perception and action, robotic cognition and learning, multi-robot systems, human-robot interaction, education and edutainment and applications.

Champion Papers.-WrightEagle and UT Austin Villa: RoboCup 2011 Simulation League.-Champions.-Robot Hardware, Software, and Technologies behind the SKUBA Robot Team.-B-Human 2011 - Eliminating Game Delays.-RoboCup 2011 Humanoid League Winners.-Towards Robust Mobility, Flexible Object Manipulation, and Intuitive Multimodal Interaction for Domestic Service Robots.-RoboCupJunior - A Decade Later.-Best Paper.-Compliant Task-Space Control with Back-Drivable Servo Actuators.-Papers with Oral Presentation.-Planning Stable Paths for Urban Search and Rescue Robots.-A Center of Mass Observing 3D-LIPM Gait for the RoboCup Standard Platform League Humanoid.-Ball Interception Behaviour in Robotic Soccer.-Rigid and Soft Body Simulation Featuring Realistic Walk Behaviour.-Towards Robust Object Categorization for Mobile Robots with Combination of Classifiers.-Learning Visual Obstacle Detection Using Color Histogram Features.-Gradient Vector Griding: An Approach to Shape-Based Object Detection in RoboCup Scenarios.-AnySURF: Flexible Local Features Computation.-Online Motion Planning for Multi-robot Interaction Using Composable Reachable Sets.-Real-Time Trajectory Generation by Offline Footstep Planning for a Humanoid Soccer Robot.-Real Time Biped Walking Gait Pattern Generator for a Real Robot.-Papers with Poster Presentation.-Efficient Multi-hypotheses Unscented Kalman Filtering for Robust Localization.-A Portable Ground-Truth System Based on a Laser Sensor.-Proposal for Everywhere Evacuation Simulation System.-Line Point Registration: A Technique for Enhancing Robot Localization in a Soccer Environment.-Learning to Discriminate Text from Synthetic Data.-RoboViz: Programmable Visualization for Simulated Soccer.-A Generic Framework for Multi-robot Formation Control.-Real-Time Plane Segmentation Using RGB-D Cameras.-Catadioptric System Optimisation for Omnidirectional RoboCup MSL Robots.-Smooth Path Planning around Elliptical Obstacles Using Potential Flow for Non-holonomic Robots.-NaOISIS: A 3-D Behavioural Simulator for the NAO Humanoid Robot.-Facial Expression Recognition for Domestic Service Robots.-Effective Semi-autonomous Telepresence.-Perceiving Forces, Bumps, and Touches from Proprioceptive Expectations.-The Ontology Lifecycle in RoboCup: Population from Text and Execution.-An Overview on Opponent Modeling in RoboCup Soccer Simulation 2D.-Multi Body Kalman Filtering with Articulation Constraints for Humanoid Robot Pose and Motion Estimation.-Benchmarks for Robotic Soccer Vision.-Development of an Object Recognition and Location System Using the KinectTM Sensor.-grSim - RoboCup Small Size Robot Soccer Simulator.-Automated Generation of CPG-Based Locomotion for Robot Nao.-Application of the "Alliance Algorithm" to Energy Constrained Gait Optimization.-Robust Algorithm for Safety Region Computation and Its Application to Defense Strategy for RoboCup SSL.-Local Multiresolution Path Planning in Soccer Games Based on Projected Intentions.-Robot Orientation withHistograms on MSL.-A Low Cost Ground Truth Detection System for RoboCup Using the Kinect.-Adaptivity on the Robot Brain Architecture Level Using Reinforcement Learning.-Spatial Correlation of Multi-sensor Features for Autonomous Victim Identification.-Fast Object Detection by Regression in Robot Soccer.-Real-Time Human-Robot Interactive Coaching System with Full-Body Control Interface.-A Loose Synchronisation Protocol for Managing RF Ranging in Mobile Ad-Hoc Networks.- Real-Time 3D Ball Trajectory Estimation for RoboCup Middle Size League Using a Single Camera.-