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Modernization of the real estate cadastre is a set of technical, organizational and administrative activities aimed at gradual improvement of the quality of data collected there. In the real estate cadastre's database, the key importance to the quality is whether the accuracy of the location of objects corresponds to the assumed formal and legal purposes and the expectations of users. The accuracy of determination of coordinates of border points has a direct impact on the uncertainty of area estimation, which is a...

Spatial databases collect information about geographic objects that represent real world phenomena. Stored and shared data sets are not homogeneous, because they are obtained on the basis of diversified source materials. Distributed sources of spatial data are characterized by a different organization in terms of completeness, consistency and accuracy. In Poland, the topographic objects database (BDOT10k) is one of the basic databases covering the entire country. The positional accuracy is a basic element of the s...

Design risk is an inherent element of construction works, and one of its sources is the spatial data quality. Cases of damage to underground pipes and cables are often the causes of accidents, delays or construction stoppages. One of the directions of research on this risk is fuzzy logic. Fuzzy logic is used to describe complex or poorly defined phenomena that are difficult to describe by using probabilistic methods. The paper presents the method of risk assessment of underground utility networks damage which is b...

In recent years one may observe a rapidly growing demand for spatial information used in the decision-making processes concerning the functioning of States and the quality of citizensпїЅ life. The number of institutions that record data as well as the quantity of information also constantly keeps growing. Official databases containing spatial information are created and run in Poland and the Topographic objects database (BDOT10k) is one of the basic databases covering an area of the whole country. An essential com...

A cadastre is an official information system that collects subject (ownership) and object (land, buildings) information that represent real world phenomena. Data sets concerning objects are created on the basis of measurement data which are susceptible to uncertainty, which canпїЅt be ignored. The paper presents the results of analysis of the uncertainty of parcel area determination, for which the vertexes coordinates are determined using RTN GNSS measurements and orthophoto. The influence of two factors on the ac...