It is our great pleasure to welcome all of you to the 4thACM/IEEE Workshop on Analysis and Retrieval of Tracked Events and Motion in Imagery Streams -- ACM/IEEE ARTEMIS 2013 which is being held this year in Barcelona, Spain, in conjunction with ACM Multimedia. The mission of this workshop is to present the current research advantages in the area of cognitive video supervision and analysis of events, actions and workflows, a critical research task for many reallife multimedia applications. ACM/IEEE ARTEMIS 2013 gives researchers a unique opportunity to share their perspectives with their colleagues interested in the various aspects of video supervision and event analysis.
The call for papers attracted submissions from all over the world. Ten articles were finally accepted after a peer review process. Each paper was judged by at least three reviewers, but most of them by four or five reviewers. These papers have been organized in three sessions. More specifically, the first session is dedicated to "Video Features and Scene Analysis" and includes algorithms, techniques and methods for video scene analysis. In particular, the first article deals with the application of a new algorithm that modifies optical flow on the use of textural features. Then, the next article introduces methods for hand gesture recognition on exploiting depth sensors from KinectTM cameras. The third paper describes a foreground detection method for traffic scenes within complex real-world urban environments. Finally, the fourth article of this session discusses the introduction of transfer learning for re-identifying persons from multiple cameras.
The second session deals with "Retrieval of Multimedia Objects/Events". This session includes two papers. The first proposes a new non-parametric method for clustering image content with mrespect to the semantics. The clustering exploits visual features like the SIFT transform while cultural heritage objects are surveyed. The second and last paper of this session describes a methodology for synchronizing two video sources which capture the same scene from different views.
The third session describes events detection and abnormal behavior recognition from complex visual data. The title of this session is "Analysis of Visual Events". We start with an article which applies methods for abnormal behavior recognition from complex visual scenes. Then, we propose techniques for recognizing complex behaviors based on a human constrained descriptor and adaptable neural networks. The third article applies computer vision tools for maritime detection in outdoor environments of sea ports. Finally, the last but not least paper of the workshop describes a methodology for cross-domain traffic scene understanding by the use of motion models.
All these sessions are presented in a single track one day workshop. The heart of this effort is the researchers who have provided the content of this event. The role of the Program Committee and of the external reviewers was prominent since they worked hard in organizing the workshop, reviewing the papers and providing suggestions for their improvements.
This event is supported by the European funded projects, EXPERIMEDIA, "Experiments in live social and networked MEDIA experiences" (www. www.experimedia.eu/ ), 4D-CH-World, "Four Dimensional Cultural Heritage World" (www.4d-ch-world.eu), and the Greek-Cypriot Collaborative project POSEIDON "Development of an Intelligent System for Coast Monitoring using Camera Arrays and Sensor Networks" (http://www.poseidonproject.eu/) and e-Park, "Exploitation of New Technological Trends in Management and Payment of Public Parking," (www.e-park.eu). In addition the Greek National Projects Viopolis and i-Promotion support this event.