Abstract The stereophotoclinometry (SPC) software suite has been used to generate global digital terrain models (DTMs) of many asteroids and moons, was the primary tool by Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) mission model shape asteroid Bennu. We describe dedicated preflight testing SPC for OSIRIS-REx using a synthetic “truth” model...

While most current Geographical Information Systems (GIS) are 2D GIS, more and more application domains as geology, civil and military engineering, etc, need 3D GIS. The particularities and capabilities of a 3D GIS are outlined in this paper. Although 3D GIS are not much developped, some studies have already been done, especially in order to represent 3D data for geological or architectural app...

In this paper we present a stereo feature-based method using SIFT (Scale-invariant feature transform) descriptors. We use automatic feature extractors, matching algorithms between images and techniques of robust estimation to produce a DTM (Digital Terrain Model) using convergent shots of a rock glacier.The geomorphologic structure observed in this study is the Veleta rock glacier (Sierra Nevad...

Digital terrain models (DTMs) are considered important basic geographic data. They are widely used in the fields of cartography, land utilization, urban planning, communications, and remote sensing. Digital photogrammetry mainly based on stereo image matching is a frequently applied technique to generate DTMs. Generally, the process of ground filtering should be applied to the point cloud deriv...

This study assesses the performance of three classification trees (CT) models (Entropy, Gain Ratio and Gini) for building detection by the fusion of laser scanner data and multi-spectral aerial images. Data from four study areas with different sensors and scene characteristics were used to assess the performance of the models. The process of performance evaluation is based on four criteria: mod...

Extracting forest variables from airborne laser scanner has less than 10 years of history. During that time, however, a new area in the field of forest studies has emerged. This paper describes existing algorithms and methods of airborne laser scanning that are used for forest measurements. The methods are divided into the following categories: 1) extraction of DTM (digital terrain model), 2) e...

Geographical Information System (GIS) software often models a Digital Terrain Model (DTM) by using triangulations (TINs). Computer Aided Design (CAD) is then used to model complex city structures and superimpose them on the TINs. Since the terrain surface is not connected to the built-up structures, no further spatial analysis (for example, neighbourhood analysis, flow modelling) is possible. B...

Techniques and experience to creation of Digital Models in Bulgaria Plamen Maldjanski SUMMARY Most important examples of digital elevation models (DTM) and digital models (DM’s) of monuments of culture and architecture in Bulgaria are described. Examples about the informative technologies influence of the evolution of the photogrammetrical ones are showed. Finally it is shown that the evolution...

Abstract We summarize a decade of effort by the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) mission team to build up unique capabilities, processes, procedures required accomplish unprecedented navigation performance during proximity operations at asteroid (101955) Bennu. Stereophotoclinometry was key technology used for digital terrain...