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We propose a skin detection approach that works for digital color images. First, we make an introduction in this image analysis domain, mentioning the most important human skin identification techniques. Then, we provide a pixel-based skin color detection technique for RGB images. Our approach performs the identification of skin regions using conversions between color spaces and formulating a set of restrictions on the color components. Some experiments, proving the effectiveness of the proposed method, are also d...

In this presentation you will get a brief overview about experiences about the development of National Environmental Information System in Hungary. Regular collection of environmental data in Hungary goes back to the early eighties, parallel with establishment of administrative structure for environment management. Different environmental media was managed by different administrative bodies resulting in a lot of confusions and delays both in administrative procedures and reporting the state of environment. After t...

Today, application of contemporary methods for geological data processing is unavoidable part of geological studies. Thereupon, the geological studies of the variety of different problems that they must be solved are done by a rule – definite method which complies with the designing stages. This paper presents a methodology developed to process geological information in this context. The aims of this methodology are comprehensive data description, effective data validation and easier model updates. Thus, special...

At present, conventional peripheral computer devices use the latest hi-tech technologies of their industry in order to facilitate PC operation. However, there are many people with severe disablement, who are not able to control their PC in a standard way with the help of a keyboard and a mouse. For the sake of these people it is necessary to find a new solution for PC controlling. One of the possible options would be an analysis of an eye movement, because this human organ is left intact even if the rest of the bo...

Due to its intensive data processing and highly distributed organization, the multidisciplinary Earth Science applications community is uniquely positioned for the uptake and exploitation of Grid technologies. Information and Communication Technologies have proven to be key instruments in activities targeted at protecting the environment and its integration in sustainable development policies. Grid computing capabilities are powerful tools to manage large volumes of Earth observation data and provide the Earth Sci...

The article briefly characterizes a web service for thermochemical calculations in term of its implementation and provided methods. It specifies web service error conditions and their dependency on input parameters as well. The article closely deals with a two approaches aimed at solution of error conditions. The first approach is based on exception utilization. It defines fault in WSDL file, describes fault structure in XML schema, creation of exception on the web service side and exception processing on the clie...

In order to prepare minimal feature vectors to be used in a Content Based Image Recognition (CBIR) system, we are proposing methods that can accurately identify the main colors contained in a digital image. The methods use the “LAB” color space properties that allow for all the colors of the same intensity or luminance “L” to be placed uniformly in the same “ab” plane. Basically, RGB images are first preprocessed: trimmed, scaled and transformed in the LAB color space. Then (a,b) pairs, corresponding t...

In recent years, due to advances in science and technology, environmental issues have been rising, constantly requiring additional attention. Fumes, waste water, air pollution are just some of many problems the society’s dealing with today. We are now in position to use the same technology, that threatens to destroy basic environmental resources necessary for living, for monitoring environmental parameters’ conditions and avoiding further pollution. Visualization of real time data and on-time data delivery are...

Research presented in this paper is a part of our ongoing work on GeoNis framework. GeoNis is framework for interoperability of GIS applications in local community environment. In this paper we introduce an approach for automatic generation of objectoriented model for handling ontology instances stored in relational databases. Central part of this approach is an algorithm that transforms application ontologies into appropriate object-oriented model. Using this approach we have developed a Data Access Layer Generat...

Floods are river basin wide phenomena and they often create common problems with locally varying intensity. The flood disaster management is highly dependent on early information and needs forecasts and data from the river basin as a whole. The starting point for flood risk management planning is the assessment of flood risks, based on the information about the river basin and floods in the past. The next step is developing strategies for reaction when flooding events are prognosticated, and evaluation of these st...

This paper presents an algorithm for construction of a patch from a set of points in 3D space. Usualy, such set of points is a subset of surface points obtained from, for example, a 3D model or a terrain. To construct the patch, the points should be connected into a triangular mesh. Because the patch can have various characteristics the connection of input points in the resulting triangular mesh is rather difficult. The algorithm starts with construction of a 3D convex hull from given set of points. The 3D convex ...

This paper presents out researches in the area of Geographic Information Systems (GIS) and geovisualization. As one of the results, we will present a solution that consists of geodata styling document repository and editor. This solution is a part of a larger GIS interoperability platform – GeoNis. As a language used for creating geographic data styling documents, we have chosen Symbology Encoding (SE) language proposed by the Open Geospatial Consortium, Inc. (OGC) organization. Integrated Symbology Encoding Edi...

Optimized site selections for urban facilities and services could be mentioned as one of the most important factor in urban management. In this context, several factors influence on decision making for site selection that by considering each of them, management could optimize the usage of equipments by employing the standard criteria. In this study, with regard to different criteria in selecting appropriate waste storage locations, which reaches both economic-technical and environmental considerations, and by empl...

Extremely fast and dynamic changes in space require efficient and appropriate recordkeeping of these. Records of spatial data without a time component give insight into data at a current moment and in their current condition in the field or records. By adding the time component (4th dimension) to spatial data, an additional function of spatial database is enabled. Spatial database becomes a spatio-temporal database and it is possible to send queries to the base which result in a set of data at a certain time momen...

The article deals with electronic documents based on Universal Business Language (UBL) 2.0 standard in the frame of business processes aimed at logistic. The article firstly describes information flow between small and medium enterprises in B2B environment. Secondly the article is describing identification of set of business documents that small and medium enterprises in Slovakia use for information exchange in business transactions and analyses why customization and localization of UBL 2.0 business documents is r...

The result of these fast and impressive develoments of information (IT) and communication technologies electronic trade becomes more prevalent. All these developments on e-trade influence good on industry and macroeconomic policies and performance. The top conutries on international competition are mostly the users of IT technologies.This study purposes the profile of informatics literacy on e-trade in Turkey. In summary of economic indicators are Industrial and occupational changes, globalism, economic dynamism, ...

In this study a methodological framework is presented using tools and techniques of geoinformatics to quantify gully erosion. The study was conducted in the Fergusson catchment; a sub-catchment of the Daly river, Northern Australia. Various airborne and field based reconnaissance surveys have shown that the catchment in places is severely affected by gully erosion producing large amounts of sediment. The framework applied comprised of Cartosat-1 (2.5 m resolution) stereo imagery 2008, topographic maps 1:20,000, 1 ...