This paper describes the development and evaluation of a haptic interface designed to provide access to line graphs for bind or visually impaired people. Computer-generated line graphs can be felt by users through the sense of touch produced by a PHANToM force feedback device. Experiments have been conducted to test the effectiveness of this interface with both sighted and blind people. The res...

We present a technique for efficiently generating photo-realistic pictures of halos and inserting them into existing photographs. First, we describe an algorithm for producing images of halos from physical parameters either coming from existing photographs or supplied by the user. The problem with the resulting images is that they are sampled in a non-uniform way. Then, we propose a specific al...

This paper is organized around two main endeavours. On the one hand, we examine currently available Computer Assisted Pronunciation Training (CAPT) systems with a view to establishing whether they meet pedagogically sound requirements. In this respect, we show that many commercial systems tend to prefer technological novelties to the detriment of pedagogical criteria that could benefit the lear...

Augmented reality is the technique by which real images can be enhanced by addition of computer-generated information. Augmented reality shows great promises in fields where a simulation in situ would be either impossible, not realistic enough or too expensive. We present in this paper an augmented reality loop that uses vision tools (perspective inversion, tracking) and show how it was used to...

The two official sources for aviation weather reports both require the pilot to mentally visualize the provided information. In contrast, our system, Aviation Weather Environment (AWE) presents aviation specific weather available to pilots in an easy to visualize form. We start with a computer-generated textual briefing for a specific area. We map this briefing onto a grid specific to the pilot...

The perception of actions performed by others activates one’s own motor system. Recent studies disagree as to whether this eVect is speciWc to actions performed by other humans, an issue complicated by diVerences in perceptual salience between human and non-human stimuli. We addressed this issue by examining the automatic imitation of actions stimulated by viewing a virtual, computergenerated, ...

A small field experimental study was undertaken to ascertain the applicability of desktop video conferencing (DVC) for a University Extension Office. Subjects (county extension agents and a faculty expert in dairy nutrition) engaged in a “ration balancing” task for herds of dairy cows, using DVC and face-to-face collaborative meetings. Subjects preferred DVC over face-toface collaboration, pres...

K p ( A bstract— This statement examines the relation of the resting ECG o its technology. Its purpose is to foster understanding of how the odern ECG is derived and displayed and to establish standards that ill improve the accuracy and usefulness of the ECG in practice. erivation of representative waveforms and measurements based on lobal intervals are described. Special emphasis is placed on ...

We describe Tabla Gyan, a system capable of improvising tabla solo music, a sophisticated percussion tradition from North India. The system is based on a generative model of the qaida, a central form in tabla solo based on thematic variation. The system uses a recombinative process of variation generation, and filters the results according to rhythmic and timbral characteristics of each phrase....

The aim of this study is to test the effects of dynamically scaffolding social regulation of middle school students working in a computer-based learning environment. Dyads in the scaffolding condition (N1⁄4 56) are supported with computer-generated scaffolds and students in the control condition (N1⁄4 54) do not receive scaffolds. The scaffolds are dynamically adjusted to dyads’ progress with a...