People typically move and act under the constraints of an environment, making human behavior strongly place-dependent. Motion patterns, the places and the rates at which people appear, disappear, walk or stand are not random but engendered by the environment. In this paper, we learn a non-homogeneous spatial Poisson process to spatially ground human activity events for the purpose of people tra...

We present in this paper a system for passengers counting in buses based on stereovision. The objective of this work is to provide a precise counting system and adapted to buses environment. The processing chain corresponding to this counting system involves several blocks dedicated to the detection, segmentation, tracking and counting. From original stereoscopic images, the system operates pri...

During the period of exceedingly critical news coverage surrounding the Monica Lewinsky debacle, President Bill Clinton’s job approval ratings were at some of the highest levels they reached during his tenure in office. Given this public response, many pollsters, pundits, and scholars argued that news coverage of the scandal must have been largely irrelevant to the public. Our view counters the...

This paper faces the problem of detecting the number of customers crossing an uncontrolled access to a big store, from the information retrieved by a zenithal camera. The solution operates in real time and is scalable in two ways: allows the coverage of wide accesses (spatial scalability), and works with a level of detail enough to allow detection of carried objects (functional scalability). In...

tory embarrassment or collapse, which in clinical terms is represented most obviously by a reduction in the blood-pressure. There are a number of causes of that state, that is, it is not a definite clinical entity, it is only a train of symptoms, and it is essential for a reception officer to sort out the cases rather than merely to regard transfusion as efficacious for the treatment of every o...

This paper describes an implementation method for the people counting system which detects and tracks moving people using a fixed single camera. This system counts the number of moving objects (people) entering the security door. Moreover, the detected objects are tracked by the proposed tracking algorithm before entering the door. The proposed system with Intel Pentium IV operates at an averag...

People detection is a fast developing technology with various applications, including surveillance, crowd management and customer behaviour analysis. We present the short history of image-based people detection algorithms, starting from background subtraction and gradient histograms, ending up in the latest publications where color and depth information are combined. The main goal is to find ou...

This paper addresses vision-based people counting under the assumption of an oblique stationary camera setup without any usage of tracking. Our approach is based on motion detection and blob analysis. The estimation of the number of people in the scene is done by accumulating the estimation values of each blob. The blob specific estimation values are computed using four input values: the minimu...

Categorize Emails According to Senders Liwei Wang, Li Du s Abstract People nowadays are overwhelmed by tons of coming emails everyday at work or in their daily life. The large quantities of emails keep causing confusions. Not only spam emails are considered to be ‘junk’, but also unwanted emails (e.g. advertisements) cause people to waste time on reading them. Therefore, it becomes urgent to de...

Do People Invest in Local Public Goods with Long-Term Benefits? Experimental Evidence from a Shanty Town in Peru Thomas de Hoop1, Luuk van Kempen1 and Ricardo Fort2 1Centre for International Development Issues Nijmegen (CIDIN) 2Grupo de Análisis para el Desarrollo (GRADE) Abstract This paper discusses voluntary contributions to health education in a shanty town in Peru, using a new experimental...