INSTALLATION OF GEOFENCES RESPONSIVE TO AD SELECTION

This paper discusses systems and methods for configuring or installing geofences on mobile devices responsive to a user selecting a geofence ad. The system presents a “geofence ad” to a user via the user’s device. The device can include mobile computing devices, mobile telecommunications devices, smart phones, personal digital assistants, laptop computers, notebooks, tablet computers, smart watches, wearable devices, or similar devices. The geofence ad can be associated with an advertiser, a fence radius, and a duration, and the geofence ad can be configured and provided by an advertiser. When the user selects the geofence ad, the geofence ad configures a geofence for the user’s device

Digital Analysis and Visualization of Swimming Motion

International audienceCompetitive swimming is a demanding sport that requires rigorous training to achieve technical perfection. Research on computer simulations of flow have improved our understanding of how thrust and drag can be optimized for better performance. However, for a swimmer translating this information to technical improvement can be difficult. In this paper, we present an analysis and visualization framework for swimming motion that uses virtual reality to display 3-dimensional models of swimmers. The system allows users to digitize their motions from video sequences, create personalized virtual representations by morphing prototypical polygonal models, visualizing motion characteristics and comparing their motions to other competitors stored in a library. The use of virtual reality alleviates many problems associated by the current video-based visualization methods for analyzing swimming motio

Evaluation of Gesture Based Interfaces for Medical Volume Visualization Tasks

International audienceInteractive systems are increasingly used in medical applications with the widespread availability of various imaging modalities. Gesture-based interfaces can be beneficial to interact with these kinds of systems in a variety of settings, as they can be easier to learn and can eliminate several shortcomings of traditional tactile systems, especially for surgical applications. We conducted two user studies that explore different gesture-based interfaces for interaction with volume visualizations. The first experiment focused on rotation tasks, where the performance of the gesture-based interface (using Microsoft Kinect) was compared to using the mouse. The second experiment studied localization of internal structures, comparing slice-based visualizations via gestures and the mouse, in addition to a 3D Magic Lens visualization. The results of the user studies showed that the gesture-based interface outperform the traditional mouse both in time and accuracy in the orientation matching task. The traditional mouse was the superior interface for the second experiment in terms of accuracy. However, the gesture-based Magic Lens interface was found to have the fastest target localization time. We discuss these findings and their further implications in the use of gesture-based interfaces in medical volume visualization, and discuss the possible underlying psychological mechanisms why these methods can outperform traditional interaction method