In this paper we present some preliminary results concerning a realtime visualisation system for densely populated urban environments. In order to be able to render the large number of humans without compromising too much the image quality, we developed a method based on Image-Based Rendering techniques. To allow them to move freely in the city while avoiding collisions against the environment ...

Streets are important component of cities since they provide the best direct impression of the city. Therefore street scenes are important aspect in 3D modeling. Fast 3D City Modeling from a street level can also be quite important for emergency response by providing realistic, updated, accurate information about accessibility to and from affected areas. This paper presents a 3D reconstruction ...

There have been developed many guide systems using location information. But most systems have a one-way communication system. We have developed a prototype universal two-way communication guide system, which was named The Forbidden City Explorer. This system has real-time information sharing functions including image data, chatting, and mutual location information. It gives priority to shared ...

We investigate a measure of \dominant perceived orienta-tion" that has recently been developed to match the output of a human study involving 40 subjects. The results of this measure are compared with humans analyzing seven \teaser" images to test its eeectiveness for nding perceptually dominant orientations. The use of low-level orientation is then applied to a \quick search" problem important...

In the domain of city design, the demand for the development of the visual tracking method is increasing, which provides the pedestrian paths. This paper proposes the tracking method which reduces the ambiguity of matching. When features of a pedestrian are ambiguous in the original image, the proposed method generates plural candidates for the pedestrian path. In the following frames the propo...

Bosch and Herman recently described how to use the traveling salesman problem (TSP) to construct a continuous line drawing based on a user-supplied image. They create a distribution of “cities” that approximates the darkness of the source image, and pass the cities to a heuristic TSP solver. We discuss their method and present alternative algorithms for city distribution that yield more attract...

The mapping of air quality over the city of Strasbourg and its vicinity requires an increase of the number of measurements aiming at spatializing information about air pollutants concentrations. A methodology based on a multisource approach for mapping air pollutants concentrations over the city was presented in previous communications. One step of the methodology is the estimation of pollutant...

the purpose of this study is the fusion of polarimetric sar and hyperspectral images for concealed target detection in forest areas. the proposed method is using the polarimetric and the spectral signatures. a radarsat-2 image and a hyperion image of the city san francisco were chosen for evaluation of the proposed method. the four targets were selected in the forest and the outer areas. three ...