Multiresolution terrain modeling using level curve information

Zarrabeitia, Luis A.; Mederos, Victoria Hernández

doi:10.1016/j.cam.2012.08.003

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…Data obtained for purposes of topographical maps and plans in the photogrammetrical way is called digital terrain model, which can be the base of geographical informations systems. The necessary accuracy can be obtained, if corresponding scale of the image is selected (Zarrabeitia, 2013). In the terrestrial photogrammetry, distances to the object, photo of which shall be taken, are relatively small.…”

Section: Methodology Of Research and Materialsmentioning

confidence: 99%

Possibilities of use of remote sensing technology in survey process in the territory of Pils island in Jelgava

et al. 2018

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In the study, creation of 3D surface relief model in Jelgava, for southern part of the Castle Island is depicted. Information about remote sensing, its historical development, as well as directions of remote sensing, development of photogrammetry and laser scanning is summarized and analysed. Principles of work and methods of photogrammetry and laser scanning. Information about creation of surface relief model from planning of unmanned aircraft, data capture and alignment to the end product – surface relief model. Application of evaluation of data obtained. The purpose of the study – to create 3D surface relief model in Jelgava, for the southern part of the Castle Island. Tasks of the study – to consider development and improvement of photogrammetry and its processes, as well as development of laser scanning and principles of its work; to research, analyse and describe technological processes of laser scanning; to create 3D surface relief model in Jelgava, for the southern part of the Castle Island; to perform comparison of surface models obtained and describe application of laser scanning. Preparation of surface relief model is time-consuming process, which includes flight planning and preparation of end-product. End-products obtained in data processing of laser scanning have very broad usage in many sectors related to geodesy and construction.

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Section: Methodology Of Research and Materialsmentioning

confidence: 99%

Possibilities of use of remote sensing technology in survey process in the territory of Pils island in Jelgava

et al. 2018

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“…In both cases a good strategy for choosing the points to read or define can increase the precision of the final model. Following the same analogy to topography [9] (which has also been extended to other disciplines [10]), it's common to establish a main direction and take parallel sections along that direction. On each section, one takes several points, preferably at the spots where the section profile visibly changes its gradient.…”

Section: Getting the Pointsmentioning

confidence: 99%

Constructing 3D Surfaces from Random Sets of Points by Means of Level Curves

Cazacu

Grama

2013

AMM

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This paper proposes an easy approach to obtaining 3D surface models in parametric CAD software products from random sets of points, based on the analogy of level curves from geodesic disciplines. The points could be obtained from measurements on existing mechanical parts, as a stage in reverse engineering processes, or can be defined arbitrary in space, as part of the design process. The present research shows that good approximations of the true surface can be obtained by measuring a relative small group of carefully selected points and constructing level curves, following the same procedure as in the case of topography. The instrument to build level curves is an original application developed for AutoCAD using VB.NET which allows the user to construct the level curves parallel to the xy plane for any number of points in space. We tested the application on more set of points sampling the same surface, obtaining the level curves in AutoCAD and using these to build the final 3D model. The surfaces obtained this way were then compared to draw some conclusions regarding the influence of the number of sampled points on the precision of the model.

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A continuative variable resolution digital elevation model for ground-based photogrammetry

Liu

Peng

2014

Computers & Geosciences

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Multiresolution terrain modeling using level curve information

Cited by 5 publications

References 17 publications

Possibilities of use of remote sensing technology in survey process in the territory of Pils island in Jelgava

Possibilities of use of remote sensing technology in survey process in the territory of Pils island in Jelgava

Constructing 3D Surfaces from Random Sets of Points by Means of Level Curves

A continuative variable resolution digital elevation model for ground-based photogrammetry

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