extended abstract 1. introduction from about the 1950s, extraordinary growth of cities and increase of urban population have led to excessive growth of settlements in cities (muhallab taha, 2001(. this growth caused an unprecedented rise in land prices (zaheri & pour- mohammadi, 2006). land is an essential element in urban expansion and development (vander molen, 2002). therefore, quality and q...

‘Urban villages’ is the Chinese version of informal settlement. It is a unique phenomenon that comprises mainly low-rise and congested, often illegal buildings surrounded by new constructions and high-rise buildings. Due to a lack of an unambiguous definition allowing for a spatial delineation of such areas, this article investigates a joint use of high-resolution optical and SAR satellite data...

We plan to continue testing our system with a variety of scenes, and to incorporate capabilities to detect and describe buildings with a variety of building roofs. Currently we assume that the detected and verified structures lay on the ground. Some structures however are located on top of other structures. That level of refinement of the description requires an additional step in our system an...

Speckles have been considered ubiquitous in all scattering-based coherent imaging technologies. However, as an optical-absorption-based coherent imaging technology, photoacoustic (PA) tomography (PAT) suppresses speckles by building up prominent boundary signals. We theoretically study the dependence of PAT speckles on the boundary roughness, which is quantified by the root-mean-squared value a...

The improved quality of InSAR data suggests to utilise such data for building detection. But, the phase information from which the height data is calculated, is often severely disturbed, depending on the signal to noise ratio. In this paper we refer to investigations to stabilise and improve the InSAR height data. After speckle filtering, a segmentation of the intensity data is carried out. Wit...

Tall building can vibrate in both the directions of Along wind and Across wind caused by the flow of wind. Modern Tall buildings designed to satisfy lateral drift requirements, still may oscillate excessively during wind storm. These oscillations can cause some threats to the tall building as buildings with more and more height becomes more vulnerable to oscillate at high speed winds. Sometimes...

The refinement of the features extracted from image data is a key issue in automated building extraction since feature extraction algorithms often result in incomplete features. This paper describes a method for the integration of image and Lidar height data, which leads to the refinement of initial image regions and the reconstruction of the parametric forms of roof planes. Region refinement i...