Vassilis
Tsagaris
Senior
Consultant
- BSc,
MSc,
PhD,
MIEE
Aratos
Technologies
138
Agiou
Andreou
str.
GR
26 222 Patras
Greece
Tel :
+30 2610 622 655
Fax
: +30 2610 272 425
http://www.aratos.gr
tsagaris@aratos.gr,
tsagaris@zeusnet.gr
Aratos
Technologies S.A is an SME established in Patras. Aratos Technologies is an SME
devoted to Research and Development of new technological solutions, methodology
and practices regarding the functionality of organizations and enterprises.
The
activities that the company is devoted are:
·
Software:
Aratos provides customised "turn-key" solutions related to Information Systems and Systems
Integration. The company delivers quality design and development of
customised applications by using high-level tools from specification capturing
to testing. The Software Engineering team works very close with the
customers and helps them meet their strategic goals by recommending and
implementing cost-effective and future-proof solutions. The Software Engineering
expertise of the company expands in a wide range of IT applications, including Management
Information Systems, Databases
and Knowledge Mgmt, Data Mining, Simulation
applications, Mobile Intelligent
Agents, and Multimedia and
e-Learning Applications.
·
IT
Consulting: Aratos Technologies S.A provides consulting
services and technical support. This begins with a complete understanding
of the client's company Information
Technology situation, objectives and constraints. Aratos S.A Consultants
perform software development, project
management, infrastructure support, requirements analysis, needs
assessments, audits and IT strategic planning. The cornerstone to the Aratos S.A
Consultants best practices methodology is knowledge which is transferred to the
client as the last and crucial component of the assignment completion. Our
understanding of our clients’ corporate culture, business processes and
technology requirements, enable us to deliver timely, cost-effective, quality
services.
·
Space: Some
of our expertises are Earth observation
studies based on SAR and multispectral data, Detection of signals in noise
involves clutter and signal statistical characterization. Parameter estimation
is a key issue in this case. Emphasis has been paid to Constant False Alarm Rate
(CFAR) Detectors and Clutter Maps. Furthermore, signals from different sensors
can be fused (Decision Fusion) for high reliability decisions, Statistical
processing of SAR images since SAR images possess interesting
properties for detecting various characteristics on Land or Sea, and their
information depends on various factors such as the signal’s polarization. SAR
statistics have been studied extensively. Currently, linear feature detection
and region classification are carried out, and Pattern recognition and fusion
in multispectral, hyperspectral and SAR data.
Information fusion in multispectral,
hyperspectral and SAR data is essential for improving image quality for
monitoring, visual inspection as well as for detection and classification.
Nikos
Bogonikolos is the managing director of Aratos
Technologies S.A. He has more than 17 years experience in project management at
both national and international levels, ranging from small to extremely large
projects. He posses a very good knowledge in EU projects and is registered
consultant for a number of Directorates of the European Commission, UNICE
(Confederation of Associations of European Industry), Centre for the Development
of Industry (ACP-EU).
Vassilis
Tsagaris received his BSc in Physics in 1998, his
MSc in Electronics in 2000 and his PhD in Remote Sensing in 2005, from the
University of Patras, Greece. He is currently a senior consultant in Aratos and
has experience in both National and European R&D projects. He serves as a
reviewer in scientific journals and he has published more than 15 journal and
conference papers.
ArT1.
V. Tsagaris, V. Anastassopoulos and G. Lampropoulos, “Fusion of
hyperspectral data using segmented PCT for enhanced color representation”,
IEEE Transactions on Geosciences and Remote Sensing, vol. 43, no. 10, pp.
2365-2375, 2005.
ArT2.
V. Tsagaris and V. Anastassopoulos, “Fusion of visible and infrared
imagery for night color vision”, Displays Journal, vol. 26, no. 4-5, pp.
191-196, 2005.
ArT3.
V. Tsagaris and V. Anastassopoulos, “Multispectral image fusion for
improved RGB representation based on perceptual attributes”, International
Journal of Remote Sensing, vol. 26, no. 15, pp. 3241-3254, 2005.
ArT4.
V. Tsagaris, A. Panagiotopoulou and V. Anastassopoulos, “Interpolation of
multispectral data using neural networks”, Proceedings of SPIE, vol. 5573,
2004, pp. 460-470.
ArT5.
V. Tsagaris and V. Anastassopoulos, “Feature Extraction for MERIS data”,
ENVISAT Symposium, September 2004, Austria.
ArT6.
V. Tsagaris and V. Anastassopoulos and N. Giannopoulos, “Colour display
strategies for enhanced representation of MERIS data”, ENVISAT Symposium,
September 2004, Austria.