1. introduction nowadays, population increase, progress in science and technology and development of industrial installations with the shortage of places in metropolitan areas have made considerable changes in the morphology of watersheds. violation to territory of rivers, channels, and streams causes alterations in natural drainage pattern and overflowing due to the lower capacity of the chang...

\ Abstract In this work we describe a novel technique for automatic 3D reconstruction of urban areas, from airborne stereo-pair images whose output is VRML. The main challenge is to compute the relevant information building’s height, roof’s description and texture – algorithmically, since it is very time consuming and thus expensive to produce it manually for large urban areas. The algorithm re...

This paper examines the influence of data fusion and wavelet compression on the automatic classification of urban environments. The principal data used is airborne Daedalus scanner imagery. Laser scanning data is introduced as an additional channel alongside the spectral channels thus effectively fusing the local height and multispectral information. The feature base is expanded to include both...

This work describes a color Vision-based System intended to perform stable autonomous driving on unmarked roads. Accordingly, this implies the development of an accurate road surface detection system that ensures vehicle stability. Although this topic has already been documented in the technical literature by different research groups, the vast majority of the already existing Intelligent Trans...

Autonomous vehicles rely on the accurate estimation of their pose, speed and direction of travel to perform basic navigation tasks. Although GPSs are very useful, they have some drawbacks in urban applications. Visual odometry is an alternative or complementary method, because it uses a sensor already available in many vehicles for other tasks and provides the ego motion of the vehicle with eno...

Developing realistic 3D models of cities provides designers, planners, the public, and the others with imagery closely coupled with the human expertise. This paper continues on the results of an earlier innovation in the field of texture creation for the construction of Virtually Realistic Model (VRM) of buildings in urban areas. Using a CCD camera mounted on a theodolite the system takes the i...

Despite the population stagnation in many industrialized countries, we experience a steady sprawl of urban/suburban space. This fact is based on the migration out of the inner cities, increasing demands on living space, and set-aside of land for commercial developments. In developing countries, this urban growth occurs at dramatic speeds and costs to the environment. Often, planning offices hav...

Slum identification in urban settlements is a crucial step in the process of formulation of pro-poor policies. However, the use of conventional methods for slum detection such as field surveys can be time-consuming and costly. This paper explores the possibility of implementing a low-cost standardized method for slum detection. We use spectral, texture and structural features extracted from ver...

Reconstruction Textured Urban 3D Model by Fusing Ground-Based Laser Range Image and CCD Image Huijing Zhao and Ryosuke Shibasaki In this paper, a method of fusing ground-based laser range image and CCD image for the reconstruction of textured 3D urban object is proposed. An acquisition system was developed to capture laser range image and CCD image simultaneously from the same platform. The reg...