In the article a technology of the aerial laser scanning (LIDAR) was cha-racterized as well as the system architecture its drawbacks and advantages and a precision analysis.The precision analysis of the aerial laser scanning was carried out on the basis of the lidar measurements of Krakow data collected in 2006. For the precision test of the X, Y, Z coordinates two objects were used: the University of Agriculture (Balicka street in Krakow) and the Wawel Hill. In the process of the precision analysis calculations of the mean square errors of the position RMSEX RMSEY RMSEXY , mean square error of the height RMSEZ and the height precision DZ were proposed as well as calculation of the percentage of the deviation frequency.
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Geodata management (including photogrammetric data) and making themaccessible in the member countries of the European Union takes place on differentprinciples. The paper presents the operation of Internet portals in Poland andsome other Federal States of Germany (Thuringia and Bavaria) where surveyingdata are made available in accordance with the INSPIRE directive. The contentsof functioning there internet portals in compared, with particular emphasis on theaccessibility of photogrammetric data. ...
Interest in orthophotomap and Digital Terrain Model, not only in Polandbut also in many European Union countries, results from works associated withestablishing a uniform Geographic Information System. Availability of orthophotomap- its presence in internet geoportals - causes that it is used for many purposes. The paper presents possibility of using orthophotomap and DTM to evaluatechanges in the way of agricultural land use, for example, the surroundings ofwater reservoir Domaniów. Orthophotomaps made at various periods of time,based on aerial photographs of 1:26000 scale (panchromatic and color) were usedfor this purpose. Application of various computer techniques allowed the visualizationof the DTM and graphical representation of changes occurring at the presentedsite. ...
For many years 3D models representing the terrain surface are used in various fields of science and engineering. The paper shows and describes the pro-cess of data implementation to the DTM, and reviews methods of creating DTM based on the TIN and GRID meshes. The paper presents methods for creating TIN meshes. It also describes the method of height interpolation in raster models based on the measurement data using various algorithms.
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Continuous development of geoinformatic technics increases the demand for up-to-date and precise data describing the terrain configuration. Application of the digital photogrammetry enables connection and analysis of data obtained by different methods. The paper presents possibility of integration of data obtained from airborne laser scanning, and from aerial photos made by DMC digital camera for generating DTM for Chańcza water reservoir area . On investigated area five representative test areas were determined, and for them an experiment connected with height analysis and integration of photogrammetric and lidar data was performed. Test areas included : agricultural areas (arable fields) - flat area, built-up area with roads network, terrain of diverse vertical configuration, affore-sted area, and river valley.Integration of lidar and photogrammetric data requires input to the project on photogrammmetric digital station DELTA, text files containing DTM in GRID structure generated in TerraScan and analysis the accuracy of these two methods integration. Analysis was performed for mentioned above test areas taking into account determined during investigations lengths of triangle sides (2 m, 15 m, 45 m, 70 m) during GRID generation by the method of triangulation. ...
With new's technology it is possible to create a Digital Terrain Model, which is increasingly being used in various fields of science. Determining of flood plains based on Digital Terrain Model provides insight into the existing reality, and at the same time it is relatively quick to execute. The use of Digital Terrain Model has been shown in the area of the river Dłubnia that is located near the city of Krakow. The work has been performed with the exploitation of digital photogrammetric station "Delta", where spatial coordinates has been created followed by the generation of elevation map. Three-dimensional models of the terrain and water models came into being in the ‘Surfer 10' program on the basis of selected coordinates of the ‘Delta' program. The models were respectively combined introducing the flooding zone afterwards. ...
The purpose of presented M.A thesis was to obtain data that were needed for creation Digital Terrain Model and than Digital Surface Model of the part of Kamionka Wielka. The surveys of the middle part of the village were done by using a photogrammetry station Delta. Stereoscopic pair was made from aerial photosin scale 1:13 000.There were also roads, watercourse and basements drawn. Due to obscured visibility in afforested land data of that area were obtained from topographic map in scale 1:10 000. ...
