HOMERE: a multimodal system for visually impaired people to explore virtual environments

Lécuyer, Anatole; Mobuchon, Pascal; Mégard, Christine; Perret, J.; Andriot, Claude; Colinot, Jean-Pierre

doi:10.1109/vr.2003.1191147

Cited by 66 publications

(29 citation statements)

References 12 publications

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“…The use of haptic VEs, which typically include audio, and their potential for supporting learning and rehabilitation training has also been reported for people who are blind (Evett, Battersby, Ridley, & Brown, 2009;Iglesias et al, 2004;Lahav & Mioduser, 2004;Lécuyer et al, 2003;Parente & Bishop, 2003;Semwal & Evans-Kamp, 2000;Simonnet, Guinard, & Tisseau, 2006;Tzovaras, Nikolakis, Fergadis, Malasiotis, & Stavrakis, 2004). Among other things, these studies showed that the users were able to recognize shapes and objects and determine the position of virtual objects in the VE.…”

Section: Introductionmentioning

confidence: 93%

Virtual Environment System in Support of a Traditional Orientation and Mobility Rehabilitation Program for People Who Are Blind

Lahav

Schloerb

Srinivasan

2013

Presence: Teleoperators and Virtual Environments

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BlindAid, a virtual environment system developed in part for orientation and mobility training of newly, adventitiously, and congenitally blind persons, allows interaction with different virtual structures and objects via auditory and haptic feedback. This research examined whether and how the system might help people who are blind develop orientation and mobility skills within a traditional rehabilitation program. Nine clients at The Carroll Center for the Blind (Newton, MA) explored VEs and performed virtual orientation tasks in addition to their traditional orientation and mobility training. The virtual training gave the participants additional time to learn systematic exploration and orientation strategies and their performance was evaluated using qualitative and quantitative methods. The findings supply strong evidence that practicing with the BlindAid system does enhance traditional orientation and mobility training in these areas.

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Section: Introductionmentioning

confidence: 93%

Virtual Environment System in Support of a Traditional Orientation and Mobility Rehabilitation Program for People Who Are Blind

Lahav

Schloerb

Srinivasan

2013

Presence: Teleoperators and Virtual Environments

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“…Other special effects such as sound can also be used. In many videogames (or other virtual reality applications [18]), sounds of footstep (and their echoes) are "realistic" cues that can be used as indicator of the speed of motion.…”

Section: Related Workmentioning

confidence: 99%

Camera Motions Improve the Sensation of Walking in Virtual Environments

Lécuyer

Burkhardt

Henaff

et al.

IEEE Virtual Reality Conference (VR 2006)

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This paper investigates the use of camera motions, in order to improve the sensation of walking in a Virtual Environment. A simple model of camera motion is first proposed. This model uses: (1) oscillating motions for the position of the camera, and (2) a compensation motion which changes the orientation of the camera and simulate oculomotor compensation to keep a constant focal point when walking.Then we describe two experiments which were conducted to study the characteristics of our model and the preference of the users in terms of sensation of walking. The first experiment compared the use of oscillating camera motions along the three directions of space. The oscillating motions were all preferred to the control condition (i.e. a linear motion, as if the user was driving a car). Furthermore, the participants preferred oscillating motions along the vertical axis, compared with the two other directions of space. The second experiment was focused on the use of a compensation motion. It showed that on average participants preferred a compensated motion during the walk, as compared with a motion with a constant orientation of the camera. These results are consistent with the way our body and eyes move naturally when walking in real life.Taken together, our results suggest that camera motions can considerably improve the sensation of walking in virtual environments. Camera motions could be further introduced in numerous applications of virtual reality in which the simulation of walking is important, such as: architectural visits, training simulations, or videogames.

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“…The Thermopad was designed for virtual reality applications, and used infrared lamps and fans to warm and cool the user, while Peltier devices induced changes in skin temperature (Dionisio et al, 1997). Lecuyer et al (2003) devised a system for visually-impaired people in a virtual reality environment, which used infrared lamps to convey a feeling of warmth from the sun to the user.…”

Section: Development Of Thermal Displaysmentioning

confidence: 99%

Influence of contact conditions on thermal responses of the hand

Galie

Ho²,

Jones

2009

World Haptics 2009 - Third Joint EuroHaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoper

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The objective of the research conducted for this thesis was to evaluate the influence of contact conditions on the thermal responses of the finger pad and their perceptual effects. A series of experiments investigated the thermal and perceptual effects of different contact conditions including contact force, contact duration, the object's surface temperature, and its surface roughness. The thermal response of the finger pad was measured using an infrared camera as the contact force varied from 0.1 to 6 N. It was determined that the decrease in skin temperature was highly dependent on the magnitude of contact force as well as contact duration. A second set of experiments investigated the effect of surface texture on the thermal response of the finger pad, and demonstrated, contrary to predictions, that a greater change in skin temperature occurs when the finger is in contact with rougher surfaces. The effect of varying surface texture on the perception of temperature was also investigated. The changes in temperature due to varying surface texture are perceptible, and demonstrate that the perception of surface roughness is not only influenced by changes in temperature, but in turn affects the perception of temperature. The final set of experiments examined the effect of varying the surface temperature of the thermal display on the perceived magnitude of finger force. Over the range of 20 to 38 'C, the surface temperature of the display did not have a significant effect on the perceived magnitude of force. The results of these experiments can be incorporated into thermal models that are used to create more realistic displays for virtual environments and teleoperated systems.

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HOMERE: a multimodal system for visually impaired people to explore virtual environments

Cited by 66 publications

References 12 publications

Virtual Environment System in Support of a Traditional Orientation and Mobility Rehabilitation Program for People Who Are Blind

Virtual Environment System in Support of a Traditional Orientation and Mobility Rehabilitation Program for People Who Are Blind

Camera Motions Improve the Sensation of Walking in Virtual Environments

Influence of contact conditions on thermal responses of the hand

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