No description available.

Thesis (M.S.)--Rochester Institute of Technology, 1981. / Typescript. Includes bibliographical references (leaves 131-133).

Thesis (Ph. D.)--University of Oregon, 2004. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 93-97). Also available for download via the World Wide Web; free to University of Oregon users.

No description available.

It has been realised in the GIS community that most 2D GISs are capable of handling 2D spatial data efficiently, but systems have had less success with 3D spatial data. This is reflected in the current GIS market place where systems which can handle 3D data are hardly available - due to several impediments in implementing such systems. This thesis attempts to address some of the impediments. The impediments which related to spatial data especially data representation, data structuring and data modelling using object-oriented (OO) techniques are the foci of this thesis. OO techniques are utilized because they offer several advantages over the traditional (i.e. structural) techniques in software development. In the aspect of spatial representation, several major representations are investigated, which then lead to identifying an appropriate representation both for 2D and 3D, that is triangular irregular network (TIN) data structures. 2D data is represented by a 2D TIN, and 3D data is represented by a 3D TIN (also called a tetrahedral network or TEN). Several algorithms were developed for the construction of the data structures where procedures such as distance transformation (DT) and Voronoi tessellations were utilized. Besides standard Delaunay triangulations, constrained triangulations were also developed, thus the inclusion of real world objects in the spatial data modelling can be facilitated. Four classes of real world objects are identified (i.e., point, line, surface, and solid objects). For the purpose of spatial data modelling of the four types of objects, a formal data structure (FDS) is utilized.

No description available.

No description available.

This thesis is concerned with the 2D and 3D mathematical modelling of satellite-based linear array stereo images and the implementation of this modelling in a general adjustment program for use in sophisticated analytically-based photogrammetric systems. The programs have also been used to evaluate the geometric potential of linear array images in different configurations for medium scale topographic mapping. In addition, an analysis of the information content that can be extracted for topographic mapping purposes has been undertaken. The main aspects covered within this thesis are: - 2D mathematical modelling of space linear array images; - 3D mathematical modelling of the geometry of cross-track and along-track stereo linear array images taken from spacebome platforms; - the algorithms developed for use in the general adjustment program which implements the 2D and 3D modelling; - geometric accuracy tests of space linear array images conducted over high-accuracy test fields in different environments; - evaluation of the geometric capability and information content of space linear array images for medium scale topographic mapping; This thesis concludes that the mathematical modelling of the geometry and the adjustment program developed during the research has the capability to handle the images acquired from all available types of space linear array imaging systems. Furthermore it has been developed to handle the image data from the forthcoming very high-resolution space imaging systems utilizing flexible pointing of their linear array sensors. It also concludes that cross-track and along-track stereo images such as those acquired by the SPOT and MOMS- 02 linear array sensors have the capability for map compilation in 1:50,000 scales and smaller, but only in conjunction with a comprehensive field completion survey to supplement the data acquired from the satellite imagery.

No description available.

O objetivo central do trabalho é congregar os componentes naturais e sociais que agem no ambiente da região Oeste Catarinense, tendo em vista uma cartografia ambiental. Para tanto, abordamos e representamos em mapa os elementos referentes a geologia, relevo, solos, vegetação, clima, uso e cobertura da terra, rede de drenagem, divisão administrativa e rede viária. Uma visão de síntese, integrada e espacializada da realidade do ambiente regional foi obtida com a utilização de técnicas de geoprocessamento, que, dentre suas possibilidades permitiram a identificação de cinco unidades ambientais e suas subdivisões para o Oeste Catarinense. / The main aim of this work is to bring together the natural and social elements that act on the West Catarinense region in Brazil, considering the environmental cartography. In order to do that, we show and represent maps of geology, relief, soil, vegetation, climate, land use, drainage system, political division and transport. Using the techniques for geoprocessment, a syntesis, integrated and spacialized view of the environmental reality was obtained. This procedure identificated five environmental units and its subdivisions into the West Catarinense.