Digital terrain modeling principles and methodology. This book presents a set of papers on digital terrain modelling for policy support which aims to be informative and stimulating for both developers and users of digital terrain models. The topics include terrain analysis, sampling strategy, acquisition methodology, surface modeling principles, triangulation algorithms, interpolation techniques, online and offline quality control in data a. It should also be useful for professi als who are interested in the wider aspects of the applications of terrain models in support for policies and decision making. Principles and methodology 2004 by zhilin li, qing zhu, and chris gold. Digital terrain modeling john wilson university of southern. Specific topics include gis terrain data models, photogrammetry and lidar dem processing, terrain surface modeling, digital terrain analysis, 3d terrain visualization and animation, and watershed modeling. Mar 16, 2019 digital terrain modeling is a process to obtain desirable models of the land surface. Digital terrain model an overview sciencedirect topics. Digital terrain model dtm derived from the 20 m contour lines a and the unmanned aerial vehicle imagery b.
Principles and methodology provides comprehensive coverage of. Zhilin li professor in geoinformatics department of land surveying and geoinformatics the hong kong polytechnic university dr. In this paper we focus our attention on digital terrain models dtms and we briefly analyse the. Principles and methodology provides comprehensive coverage of recent developments in the field. The course includes computer exercises in the generation and processing of dem using. Pdf digital terrain modeling is an important task in several geospatial information applications. Traditionally, these procedures are based on numerical treatments of twovariable discrete functions of elevation.
Download it once and read it on your kindle device, pc, phones or tablets. Department of land surveying and geoinformatics20042005 academic research. The topics include terrain analysis, sampling strategy, acquisition methodology, surface modeling principles, triangulation algorithms, interpolation techniques, online and offline quality control in data acquisition, dtm accuracy assessment and. A global dem refers to a discrete global grid dems are used often in geographic information systems, and are the most common basis for digitally produced relief maps. Principles and methodology is the only uptodate book covering the whole range of topics in terrain modelling. Endre katona university of szeged department of informatics.
Digital terrain modeling with the chebyshev polynomials. A digital elevation model dem is a 3d cg representation of a terrains surface commonly of a planet e. Historically, dtm was introduced by engineers at massachussetts institute of technology mit in the late 1950s. Digital terrain modeling principles and methodology dr. This course covers methods for acquiring and representing digital terrain models dtm. Principles and methodology, the photogrammetric record on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Modulo generico,35432,0021,civil engineering,8211,,,20,6, applied geomatics,73315,0021,ingegneria per lambiente e il territorio.
View enhanced pdf access article on wiley online library html view download pdf for offline viewing. Determination of grid size for digital terrain modeling in landscape investigations exemplified by soil moisture distribution at a microscale. Terrain analysis programs for the environmental sciencessoftware tools described in this book was motivated by our view of the world as a stage on which a series of hierarchically scaled biophysical. It provides insight into the methodology of creating a triangular irregular network, or tin, model. Digital terrain modelling dtm if your customer deliverables includes a digital terrain map dtm, then 3dreshaper is the tool of choice for easy to use ground extraction, contour mapping, and breaking line extraction.
Journal of geographical information science, 11, 451473. Pankratov institute of mathematical problems of biology, russian academy of sciences pushchino, moscow region, 142290, russia abstract mathematical problems of digital terrain analysis include interpolation of digital elevation. Digital terrain modeling principles and methodologydr. Digital elevation and terrain modelsdigital elevation and terrain models a digital terrain model dtm is a quantified representation of terrain made from a digital elevation model dem examples of terrain variables derived from a dem. Dem is a subset of dtm and the most fundamental component of dtm.
But sometimes they actually refer to different products. Mathematical problems of digital terrain analysis include interpolation of digital elevation models dems, dem generalization and denoising, and computation of morphometric variables by calculation of partial derivatives of elevation. Although maps depicting topographical information have been produced for hundreds of years, it is only recently that such elevation data has been collected in such a precise digital. Sudan national survey authority, khartoum, sudan abstract point interpolation is a common method in digital terrain modeling. Use features like bookmarks, note taking and highlighting while reading digital terrain modeling. Digital terrain modeling principles and methodology taylor. Principles and methodology, zhilin li, qing zhu, and christopher gold, crc press, 2005. While the term can be used for any representation of terrain as gis data, it is generally restricted to the use of a raster grid of elevation values. This is an excellent text providing a complete overview of the principles of digital terrain modeling. A digital terrain model dtm approximates a part or the whole of the. Digital elevation model technologies and applications. Terrain model quality assessment methods and statistics, in terms of accuracy and precision, will. Both have the same spatial extent but different resolutions.
Nov 29, 2004 written by experts, digital terrain modeling. With its expanding array of applications in everything from biodiversity modeling to wireless communications, its no wonder digital terrain modeling dtm the electronic process of representing topography in three dimensions is a hot subject among engineers and geoscientists. Pdf digital terrain modeling principles and methodology. Modern geomorphometry focuses on the extraction of measures land surface parameters and spatial features land surface objects from digital topography. The topics include terrain analysis, sampling strategy. Digital elevation model gis wiki the gis encyclopedia.
Digital terrain model dim is used to represent the earth surface or part of the. Zhilin li professor in geoinformatics department of land surv. It is also widely known as a digital terrain model dtm. Course objectives this course focuses on the theory and methods of the generation, compilation, analysis, and applications of digital elevation data. The topics include terrain analysis, sampling strategy, acquisition methodology, surface modeling principles, triangulation algorithms. Also it can clearly be seen that dtm a is based on an interpolation and thus looks smoother than the reality. Digital terrain modelling dtm if your customer deliverables includes a digital terrain map dtm, then 3dreshaper is the tool of choice for easy to use ground extraction, contour. Digital terrain modeling with the chebyshev polynomials i. Digital terrain modeling is a process to obtain desirable models of the land surface. A digital elevation model dem is a digital representation of the threedimensional information of the earths surface. The topics include terrain analysis, sampling strategy, acquisition methodology, surface modeling principles, triangulation algorithms, interpolation techniqu. The topics include terrain analysis, sampling strategy, acquisition methodology, surface modeling principles, triangulation algorithms, interpolation techniques, online and offline quality control in. Overview of dtms needs for dtms terrain modeling modeling strategies evolutionary modeling terrain rendering visualization strategies 7. The reader will obtain a thorough understanding of terrain modeling from data sources and acquisition methods, to surface modeling.
Basic principles of rendering portland state university. Algorithms for triangular irregular network formation. Digital terrain modeling dtm, also known as digital elevation modeling, is the practice of creating a digital representation of ground topography and terrain. Maune, phd, cp and amar nayegandhi, cp, cms digital elevation model technologies and applications. Earth, moon, or asteroid created from a terrains elevation data. Computational terrain modeling with distance functions for. Pdf digital terrain modeling with the chebyshev polynomials. Such models have found wide applications, since its origin in the late 1950s, in various disciplines such as mapping, remote sensing, civil engineering, mining engineering, geology, geomorphology, military engineering, land planning, and communications. Digital elevation models a guidance note on how digital elevation models are created and used weaknesses and different types of output. The term rendering, in the context of digital terrain visualization, refers specifically to the process of transforming a 3d space to a 2d plane in order to simulate a 3d experience graphically on a computer.
Digital terrain modelling dtm applications 3dreshaper. Digital terrain modeling upgrades land development suite survey and cogo suite survey and cogo digital terrain modeling design parking ecommerce, open. For anyone involved in civil engineering, surveying or the construction industry dealing with real world sites where levels can be anything but flat, caddies digital terrain modelling application dtm provides the perfect tool for preparing the site models, sections and contours needed to fully develop a scheme. The term rendering, in the context of digital terrain visualization, refers specifically to the process of transforming a 3d space to a 2d plane in order to simulate a 3d experience graphically on a computer screen. Qing zhu professor in gis state key laboratory for information engineering in surveying, mapping and remote sensing liesmars wuhan university.
475 592 153 660 876 1160 941 117 675 900 224 527 1080 474 547 1017 681 1117 666 809 460 106 900 174 772 162 319 248 284 383 167 152 919 1359