We propose a complete image-based process that facilitates recovery of both gross-scale geometry and local surface structure to create highly detailed 3D models of building façades from photographs. We approximate both albedo and sufficient local geometric structure to compute complex self-shadowing effects, and fuse this with a gross-scale 3D model. Our approach yields a perceptually high-qual...

Generally, the GPS-only navigation system cannot provide an accuracy level that is sufficient for use in vehicular applications in all environments. Specifically, in urban canyon environments where the presence of large buildings leads to frequent shadowing of signals, several multipath peaks can potentially exist in the correlator outputs. To this end, it is worth characterizing the multipath ...

State-of-the-art satellite SAR sensors (e.g., TerraSAR-X, CosmoSkyMed) provide imagery of one meter resolution and airborne SAR sensors achieve even higher resolutions. In those data objects in urban areas become visible in high detail. However, SAR-typical effects like layover, shadowing, and interfering backscatter of multiple objects complicate interpretability. Thus, additional information ...

Designers of low-power radio systems for use in urban areas would benefit from accurate computer-based predictions of signal loss due to shadowing. This paper presents a propagation prediction method that exploits a building database and considers the three-dimensional profile of the radio path. Models and algorithms are provided that allow the application of Fresnel-Kirchhoff diffraction theor...

The Kawaradera temple, formerly located in the village of Asuka, was one of the oldest temples in Japan; unfortunately, it was destroyed by fire in the latter part of the Muromachi Period. The Virtual Kawaradera Project is an outdoor on-site augmented reality application that uses a head mounted display, whose purpose is to reconstruct and represent Kawaradera virtually. We begin with a short i...

The quick deployment and flexible characteristics of wireless ad hoc networks make them suitable for many commercial and daily life applications. A most challenging task in these distributed networks is ensuring quality of service to end-to-end user in presence of wireless channel, random network topology, unpredictable traffic patterns, and shared resources. The performance of network is limit...