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Displaying 1-13 out of 13 total
Superquadric Segmentation in Range Images via Fusion of Region and Boundary Information
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Dimitrios Katsoulas, Christian Cea Bastidas, Dimitrios Kosmopoulos
Issue Date:May 2008
pp. 781-795
The high potential of Superquadrics as modeling elements for image segmentation tasks has been pointed out since years in the computer vision community. In this work we employ superquadrics as modeling elements for multiple object segmentation in range ima...
 
Box-like Superquadric Recovery in Range Images by Fusing Region and Boundary Information
Found in: Pattern Recognition, International Conference on
By Dimitrios Katsoulas, Dimitrios I. Kosmopoulos
Issue Date:August 2006
pp. 719-722
This work contributes to the robotic bin-picking problem, and more specifically to the problem of localizing piled box-like objects. We employ range imagery, and use box-like Superquadrics for modeling the target objects. Our approach for Superquadric segm...
 
A Threefold Dataset for Activity and Workflow Recognition in Complex Industrial Environments
Found in: IEEE Multimedia
By Athanasios Voulodimos,Dimitrios Kosmopoulos,Georgios Vasileiou,Emmanuel Sardis,Vasileios Anagnostopoulos,Constantinos Lalos,Anastasios Doulamis,Theodora Varvarigou
Issue Date:July 2012
pp. 42-52
Unlike any previous effort, the Workflow Recognition (WR) large-scale dataset is a collection of video sequences from the real industrial manufacturing environment of a major automobile manufacturer.
 
Robust Human Behavior Modeling from Multiple Cameras
Found in: Pattern Recognition, International Conference on
By Dimitrios I. Kosmopoulos, Athanasios S. Voulodimos, Theodora A. Varvarigou
Issue Date:August 2010
pp. 3575-3578
In this work, we propose a framework for classifying structured human behavior in complex real environments, where problems such as frequent illumination changes and heavy occlusions are expected. Since target recognition and tracking can be very challengi...
 
Content-Based Time Sampling for Efficient Video Delivery over Networks of Low and Variable Bandwidth
Found in: Digital Telecommunications, International Conference on
By Anastasios D. Doulamis, Dimitrios I. Kosmopoulos, Nikolaos D. Doulamis
Issue Date:August 2006
pp. 27
A new content-based algorithm is proposed for efficient delivery of video sequences under networks of low and variable bandwidth. It dynamically discards the audiovisual content that cannot be afforded by the network, (e.g., due to bandwidth variations), a...
 
Monitoring human behavior in an assistive environment using multiple views
Found in: Proceedings of the 1st ACM international conference on PErvasive Technologies Related to Assistive Environments (PETRA '08)
By Dimitrios Katsoulas, Dimitrios Kosmopoulos, Konstandinos Valasoulis, Panagiota Antonakaki
Issue Date:July 2008
pp. 1-29
This paper presents our approach in understanding the behavior of humans moving on a plane using multiple cameras. This approach is appropriate for monitoring people in an assistive enivronment for the purpose of issuing alerts in cases of abnormal behavio...
     
Robust offline topological map estimation using visual loop closures
Found in: Proceedings of the 6th International Conference on PErvasive Technologies Related to Assistive Environments (PETRA '13)
By Dimitrios Kosmopoulos, Fillia Makedon, Ilias Maglogiannis
Issue Date:May 2013
pp. 1-8
A framework employing the Student-t pdf is introduced for offline map estimation and robot localization using visual loop closures. The framework uses the Student-t pdf (a) as an observation model of a Hidden Markov Model to represent a topological map (b)...
     
A game system for remote rehabilitation of cerebral palsy patients
Found in: Proceedings of the 5th International Conference on PErvasive Technologies Related to Assistive Environments (PETRA '12)
By Alexandros Papangelis, Angela Boisselle Texas, Dimitrios Kosmopoulos, Fillia Makedon, Giannis Mouchakis, Vangelis Karkaletsis
Issue Date:June 2012
pp. 1-9
Cerebral Palsy (CP) is a condition that affects many people and causes paralysis or disability due to brain dysfunctions. Though incurable, physical rehabilitation has proven to improve the patients' quality of life. Some of them, however, may need extra m...
     
Recognition of sleep patterns using a bed pressure mat
Found in: Proceedings of the 4th International Conference on PErvasive Technologies Related to Assistive Environments (PETRA '11)
By Alexandros Papangelis, Dimitrios Kosmopoulos, Georgios Galatas, Fillia Makedon, Vangelis Metsis
Issue Date:May 2011
pp. 1-4
The monitoring of sleep patterns is of major importance for various reason such as, the detection and treatment of sleep disorders, the assessment of the effect of different medical conditions or medications on the sleep quality and the assessment of morta...
     
Tools for semi-automatic monitoring of industrial workflows
Found in: Proceedings of the first ACM international workshop on Analysis and retrieval of tracked events and motion in imagery streams (ARTEMIS '10)
By Albert Hofmann, Athanasios Voulodimos, Banafshe Arbab-Zavar, Constantinos Lalos, Dimitrios Kosmopoulos, Galina Veres, Georg Thallinger, Helmut Grabner, Ignacio Jubert Soler, Igor Rosenberg, Imed Bouchrika, John Carter, Lee Middleton, Luc Van Gool, Ma
Issue Date:October 2010
pp. 81-86
This paper describes a tool chain for monitoring complex workflows. Statistics obtained from automatic workflow monitoring in a car assembly environment assist in improving industrial safety and process quality. To this end, we propose automatic detection ...
     
Enhanced human behavior recognition using HMM and evaluative rectification
Found in: Proceedings of the first ACM international workshop on Analysis and retrieval of tracked events and motion in imagery streams (ARTEMIS '10)
By Athanasios S. Voulodimos, Dimitrios I. Kosmopoulos, Nikolaos D. Doulamis, Theodora A. Varvarigou
Issue Date:October 2010
pp. 39-44
Human behavior recognition and real world environments monitoring constitute challenging research problems rapidly gaining momentum over the last years. Methods for time series classification like the Hidden Markov Models have been employed in the past for...
     
An industrial video surveillance system for quality assurance of a manufactory assembly
Found in: Proceedings of the 3rd International Conference on PErvasive Technologies Related to Assistive Environments (PETRA '10)
By Anastasios Doulamis, Athanasios Voulodimos, Constantinos Lalos, Dimitrios Kosmopoulos, Emmanouel Sardis, Vasilios Anagnostopoulos
Issue Date:June 2010
pp. 1-2
In this paper, we present the research achievements of a computer vision system that surveys the behavior of workers in an industrial environment. The proposed system applies weakly supervised learning algorithms able to detect objects, then to extract the...
     
An architecture for a self configurable video supervision
Found in: Proceeding of the 1st ACM workshop on Analysis and retrieval of events/actions and workflows in video streams (AREA '08)
By Anastasios Doulamis, Dimitrios Kosmopoulos, Manolis Sardis, Theodora Varvarigou
Issue Date:October 2008
pp. 69-76
In this paper, we propose a self configurable cognitive architecture for supervising video data in manufacturing environments. The architecture supports weakly supervised learning algorithms and self-adaptation strategies for analysis of visually observabl...
     
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