Urban functional zones, such as commercial, residential, and industrial zones, are basic units of urban planning, and play an important role in monitoring urbanization. However, historical functional-zone maps are rarely available for cities in developing countries, as traditional urban investigations focus on geographic objects rather than functional zones. Recent studies have sought to extrac...

In this paper we investigate the acquisition of 3D functional object maps for outdoor urban scenes from point cloud data, using techniques which worked reliably for indoor household environments in our previous work[1]. By employing 3D geometry reasoning methods, our approach can successfully segment the important parts of the environment and give semantic annotations to the underlying data poi...

This work is concerned with extracting straight lines in SAR image areas for application of urban analysis. The methodology combines the Hough transform and the line detectors algorithms proposed in Tupin et al. [2] to extract the main axes in road networks. A real SAR image is used to test the proposed algorithm.

Laser mapping has become quite popular in recent days due to its capability of providing information directly in three dimensions. These days, we observe the emergence of new demands for ‘along-street’ 3-D data. ‘Along-street’ 3-D data provide a real or true visualization of the environment that is different from virtual reality. However, there still lacks a reliable and quick method of acquiri...

City growth and environmental difficulties last decades leads the art of urban design and development think more precisely and new approaches for conserving environment and developing urban areas have been evolved.The present study deals with concepts related to ecology in the city and in particular the theory of Ecological Urbanism and its criteria is expressed. Also theory and characteristics...

One common approach to detect urban features from high resolution images is, using automatic classification methods. The purpose of this paper is to demonstrate the applicability of the developed algorithm (DA) by systematically evaluating its performances in comparison to other popular classifier, support vector machine (SVM). The detection performance of algorithms is evaluated by an object-b...

The objective of this work was the presentation of a knowledge-based framework for the identification of urban features, as well as additional land cover types, contained in the image scene. The test area used was located in an urban environment of Aghios Stefanos, Attica. An IKONOS image (spatial resolution of 1m-resampled) was acquired for the study area and further pre-processed. Furthermore...

Most of the urban models nowadays consider towns as a flat area without sloping zones. However, in order to obtain a realistic model of a city we need to include the information provided by its Digital Elevation Model (DEM). A global representation using the surface topography and the information usually given by an urban GIS (the geometry of buildings, blocks and streets and additional data ab...