Applications of the Robust Interpolation for Dtm Determination
نویسندگان
چکیده
Different data sources for the determination of a digital terrain model (DTM) are available. New measurement techniques like laser scanning (LS) and interferometric synthetic aperture radar (InSAR) allow a high degree of automation and dense sensing. They pushed the development of new methods for data modelling. This paper presents robust methods for the automatic determination of a DTM from point cloud data. These robust methods operate on the original data points and allow the elimination of off-terrain points and the modelling of the terrain surface within one process. After a short description of the algorithms the paper focuses on the results of this technique applied to datasets from different sensors (airborne LS, terrestrial LS, satellite LS, tacheometry and photogrammetry). * Corresponding author.
منابع مشابه
An Approach to Single Image Automatic Orientation and Point Determination by Using Ortho-images and a Dtm
This paper describes an approach to single image automatic orientation and point determination by using current ortho-images and a DTM, and the experience gained in its implementation. The procedure proposed automatically extracts and matches feature points in evenly distributed patches on aerial images and ortho-images. A large number of image measurements (up to several thousand) are obtained...
متن کاملRobust Fixed-order Gain-scheduling Autopilot Design using State-space Stability-Preserving Interpolation
In this paper, a robust autopilot is proposed using stable interpolation based on Youla parameterization. The most important condition of stable interpolation between local controllers is the preservation of stability so that each local controller can ensure stability for an open neighborhood around a nominal point. The proposed design used fixed-order robust controller with parameter-dependent...
متن کاملEstimation of Unknown Height with Artificial Neural Network on Digital Terrain Model
In Digital Terrain Models (DTM) interpolation is actually a surface fitting problem. For the estimation of heights of points with known X-Y coordinates there are many interpolation methods. Besides, there are various works about the determination of DTM accuracy. The aim of this study is to develop an Artificial Neural Network (ANN) method as an alternative to other common methods. The ANN mode...
متن کاملAnalysis of the Display of Digital Terrain Models using Different Interpolation Methods
In the paper is described the process of creating digital terrain models (DTM) using different interpolation methods. The analyses show the accuracy of the DTM obtained from topographic maps at different scales and using different interpolation methods. The quality and accuracy of DTM depends on the complexity of the terrain, data sources, and methods of height interpolation. The basic idea is ...
متن کاملIAPRS, Vol. XXXIII, Amsterdam, 2000 DTM GENERATION FROM RUSSIAN TK-350 SPACE IMAGERY IN THE PC-BASED PHOTOGRAMMETRIC SYSTEM Z-SPACE
The paper describes a number of methods for fast DTM generation, processing and merging implemented in the new powerful PC-based photogrammetric system Z-Space, which is specially optimized for TK-350 imagery. The particularity of DTM processing for TK-350 imagery consists in large amount of DTM points; it is usually equal to tens millions. The developed DTM generation method uses terrain and i...
متن کامل