This paper contains some reflections about using 3D topology, and more generally some 3D concepts related to 3D cadastre. Firstly, we develop some conceptual views about 3D modelling and more specifically about the definition of 3D spatial objects. Secondly, we present a new framework for representing spatial relationships. The framework has different “complexity” levels and allows mixing simpl...

The task addressed in this paper is 3D modelling and reconstruction of (real world) trees on the basis of terrestrial laser scans. To identify the structure of a tree in terms of stem and branches, an algorithm has been designed in 3D voxel space, based on a selection of basic and advanced 2D raster (image) processing algorithms, transferred into the 3D domain. The selection includes filtering,...

We have developed a 3D modelling system that can provide a stereo visualization in a back-projection screen environment. It takes a wireless interaction with user’s head and hand supported by a Vision Tracking System. Our model representation is based on the MeshLibrary, which is optimized for real-time rendering and can accommodate for changes of both vertex positions and mesh connectivity. Th...

Rapid procedural 3D urban modelling has been a constant research issue for a number of years now. We present a complete procedural 3D modelling solution for mobile device usage of the content, called Virtual City Maker, based on scripting algorithms allowing for both the automatic and also semi-automatic creation of photorealistic quality virtual urban content. The content produced can be speci...

While an increasing number of cities is using 3D geo-information, applications like infrastructure planning and the assessment of environmental impact by noise, wind and air pollution require 3D geo-information over areas covering multiple municipalities. To enable such applications a national 3D landscape model has been produced in the Netherlands by automated fusion of the national 1:10,000 s...

This paper builds on previous research into the development of the TMap3D system which allows for the creation of historical 3D spatiotemporal visualisations from natural language narratives [1]. This paper addresses the use of deductive 3D modelling techniques to generate the realism of the object behaviours, the environmental conditions and their interactions within the visualisation. The aut...

In this paper we demonstrate the workflow of 3D modelling and photorealistic texture mapping based on close range imagery acquired with a mini-UAV (Unmanned Aerial Vehicle) and in terrestrial mode. For generation of a highly accurate 3D model, a combined photogrammetric processing of these images was required. The conducted workflow consists of the following steps: project planning, flight plan...

The urgent need of neuraminidase inhibitors (NI) has provided an impetus for understanding the structure requisite at molecular level. Our search for selective inhibitors of neuraminidase has led to the identification of pharmacophoric requirements at various positions around acyl thiourea pharmacophore. The main objective of present study is to develop selective NI, with least toxicity and dru...

To my wife and my daughter, to whom I promised this a few years ago. They fully supported me to conclude it during weekends and holidays. I promise I will not do anything like this again! To my parents, who would have liked to see it finished. Information display technology is a rapidly growing research and development field. Resolutions of TFT displays are increasing rapidly and the flat panel...

This paper presents a 3D reconstruction technique for real world environments based on a traditional 2D laser range finder modified to implement a 3D laser scanner. The paper describes the mechanical and control issues addressed to achieve physically the 3D sensor as well as the adaptation of some previously developed techniques used to merge range and intensity data and illustrates the potenti...