Filosofia della conoscenza

Il capitolo passa in rassegna le posizioni tardo antiche e medievali sulla conoscenza, la percezione, il rapporto mente-realt\ue0, l'astrazione e i concetti

VisLab Intercontinental Autonomous Challenge (VIAC).

Abstract—This paper presents the design issues that were considered for the equipment of 4 identical autonomous vehicles that will drive themselves without human intervention on an intercontinental route for more than 13,000 km. Autonomous vehicles have been demonstrated able to reach the end of a 220 miles off-road trail (in the DARPA Grand Challenge), to negotiate traffic and obey traffic rules (in the DARPA Urban Challenge), but no one ever tested their capabilities on a long, intercontinental trip and stressed their systems for 3 months in a row. This paper presents the technological challenge of a set of vehicles that will run th

Vision-Based Monitoring of Pedestrian Crossings

This paper presents a vision-based intelligent pedestrian crossing able to derive information on the occupancy status of its zebra crossing. The detection of pedestrians can help enhancing safety for road users who need longer to cross the road. At the same time, it produces savings in traffic delay. A stereo vision approach is adopted: the difference between two bird's eye views of the crossing is analyzed to extract objects rising up from the road plane. Background subtraction is applied to get rid of noise due to small drifts in the calibration and lens distortion. The discrimination between pedestrians and vehicles is performed taking into account their direction of movement

Automatic Calibration of a Urban Video Surveillance System through the Observation of Zebra Crossings

Abstract. In this paper, a method for automatic calibration of a camera stereo pair through the observation of zebra crossing signs is described. It is based on the well-known consideration that it is possible to obtain information about lens distortion and camera orientation by observing how a known pattern appears in the image; moreover, a major advantage of this system is that it does not require any ad-hoc calibration pattern, because it exploits the zebra crossing signs, a pattern usually present in images used for monitoring pedestrians while crossing a road. To achieve this goal, well-known techniques for removing lens distortion and perspective effect are combined with new methods for locating calibration points on the available pattern, and, finally, for evaluating the camera position.

Pedestrian Detection on a Moving Vehicle: an

The aim of this paper is to investigate the employment of a NIR (Near Infra-Red) camera on a moving vehicle for pedestrian detection, considering the NIR radiation as a suitable waveband for a single sensor device. In particular, we studied a system with special attention to cost, in order to make it affordable for all vehicles. We used as equipment an analog NIR CCD camera and examined the system behaviour in three different lighting conditions: daytime, nighttime using dippedbeam headlights and nighttime using full-beam headlights. Subsequently we chose the lighting situation which proved, in the long run, to be the most suitable for pedestrian detection. The algorithm proved to be efficient in common exurban scenarios

Vision Technologies for Intelligent Vehicles

This paper surveys the different technologies involved in the development of computer vision applications for Intelligent Vehicles derived from the 15 year experience of VisLab. Some illustrative examples are also discussed

Vision Technologies for Intelligent Vehicles

www.vislab.it Abstract. This paper surveys the different technologies involved in the development of computer vision applications for Intelligent Vehicles derived from the 15 year experience of VisLab. Some illustrative examples are also discussed