View from Ship by Digital Terrain Model

Digital Terrain Model Data Structures

This paper describes pertinent digital terrain model data structures, namely, grid/raster, quadtree, and triangular irregular network. A basic concept of DIM data structure is also explained. The aspects of TIN storage, TIN data structure conversion, advantages and disadvantages of each structure are discussed. A complete data structure conversion program is also presented. n. 1.0 INTRODUCTION ...

Machine Cataloging of Lunar Craters from Digital Terrain Model

Introduction: An accurate and representative catalog of impact craters on the surface of the Moon is necessary to infer information about the age of surfaces and the sequence of geological events [1]. The existing global catalogs of lunar craters contain ~2700 craters [2] and ~8500 craters [3], respectively. They suffer from uneven areal coverage as they were compiled from images having differe...

Presenting a Morphological Based Approach for Filtering The Point Cloud to Extract the Digital Terrain Model

The Digital terrain model is an important geospatial product used as the basis of many practical projects related to geospatial information. Nowadays, a dense point cloud can be generated using the LiDAR data. Actually, the acquired point cloud of the LiDAR, presents a digital surface model that contains ground and non-ground objects. The purpose of this paper is to present a new approach of ex...

Digital Elevation Model Error in Terrain Analysis

Automatic Crater Recognition on Digital Terrain Model

Introduction: ESA, SMART-1 has orbited around the Moon [1], Space Agencies of Japan, China, and India have expressed subsequent moon missions, and USA announced a return to the moon in New Vision for Space Exploration Program [2]. We have a Moon Rush. Japanese SELENE mission [3] has 14 instruments, and is going to provide a dataset more than 20TB. These massive and diverse data raise awareness ...