Interactive Audio-haptic Map Explorer on a Tactile Display

Zeng, Limin; Miao, Mei; Weber, Gerhard

doi:10.1093/iwc/iwu006

Cited by 28 publications

(14 citation statements)

References 31 publications

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“…There are several works that utilize Hyperbraille, a technology mainly for blind people that uses the combination of a tactile display (a matrix of piezo actuators) with a desktop computer. There were multiple approaches from Zeng et al (e.g., References [58][59][60]) for interactive tactile maps that adapted their tactile rendition due to a user's touch interaction. Another approach [40] addressed the tactile exploration of building plans and outdoor environments, which was supported by a text-to-speech (TTS) functionality.…”

Section: Integrated Approachesmentioning

confidence: 99%

“…Since a similar task has been solved for electronic visual maps decades ago, the authors believe that this can achieved for tactile maps as well. To realize this, the research results of user studies carried out to address these questions (e.g., References [4,7,58]) have to be transferred to formal rules for computing functional and usable maps. Likewise, for volumetric tactile material, there is an increasing number of publications (e.g., Reference [17]) that could help to optimize the usage of multiple elevation levels (such as sketched in Section 3.1) for tactile map design.…”

Section: Limitations Of Experimental Application On Tactile Mapsmentioning

confidence: 99%

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Visually Augmented Audio-Tactile Graphics for Visually Impaired People

Götzelmann

2018

ACM Trans. Access. Comput.

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Tactile graphics play an essential role in knowledge transfer for blind people. The tactile exploration of these graphics is often challenging because of the cognitive load caused by physiological constraints and their complexity. The coupling of physical tactile graphics with electronic devices offers to support the tactile exploration by auditory feedback. Often, these systems have strict constraints regarding their mobility or the process of coupling both components. Additionally, visually impaired people cannot appropriately benefit from their residual vision. This article presents a concept for 3D printed tactile graphics, which offers to use audio-tactile graphics with usual smartphones or tablet-computers. By using capacitive markers, the coupling of the tactile graphics with the mobile device is simplified. These tactile graphics integrating these markers can be printed in one turn by off-the-shelf 3D printers without any post-processing and allows us to use multiple elevation levels for graphical elements. Based on the developed generic concept on visually augmented audio-tactile graphics, we presented a case study for maps. A prototypical implementation was tested by a user study with visually impaired people. All the participants were able to interact with the 3D printed tactile maps using a standard tablet computer. To study the effect of visual augmentation of graphical elements, we conducted another comprehensive user study. We tested multiple types of graphics and obtained evidence that visual augmentation may offer clear advantages for the exploration of tactile graphics. Even participants with a minor residual vision could solve the tasks with visual augmentation more quickly and accurately.

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Section: Integrated Approachesmentioning

confidence: 99%

Section: Limitations Of Experimental Application On Tactile Mapsmentioning

confidence: 99%

Visually Augmented Audio-Tactile Graphics for Visually Impaired People

Götzelmann

2018

ACM Trans. Access. Comput.

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“…One of the rare commercially available solution (HyperBraille 2 ) consists in a matrix of 120x60 pins that can be moved up or down with piezoelectric crystals in order to display a tactile image. Zeng et al (2014) used this device to enable blind users to explore, annotate and even zoom in or out. However such devices are relatively cumbersome but above all very expensive.…”

Section: Better Accessibility With Interactive Audio-tactile Mapsmentioning

confidence: 99%

From Open Geographical Data to Tangible Maps: Improving the Accessibility of Maps for Visually Impaired People

Ducasse

Macé

Jouffrais

2015

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:Visual maps must be transcribed into (interactive) raised-line maps to be accessible for visually impaired people. However, these tactile maps suffer from several shortcomings: they are long and expensive to produce, they cannot display a large amount of information, and they are not dynamically modifiable. A number of methods have been developed to automate the production of raised-line maps, but there is not yet any tactile map editor on the market. Tangible interactions proved to be an efficient way to help a visually impaired user manipulate spatial representations. Contrary to raised-line maps, tangible maps can be autonomously constructed and edited. In this paper, we present the scenarios and the main expected contributions of the AccessiMap project, which is based on the availability of many sources of open spatial data: 1/ facilitating the production of interactive tactile maps with the development of an open-source web-based editor; 2/ investigating the use of tangible interfaces for the autonomous construction and exploration of a map by a visually impaired user.

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“…Visually impaired people (VIP) encounter many mobility problems as stated by [1,2]. To overcome such problems, many mobility aids were developed in the past decades to help VIP acquiring spatial information by avoiding obstacles [3], reading maps [4,5], and navigating in unfamiliar regions [6,7] by applying 3 main categories of non-visual interfaces: auditory-only (i.e. non-speech sounds and speech), haptic-tactile only (e.g.…”

Section: Introductionmentioning

confidence: 99%

Virtual Navigation Environment for Blind and Low Vision People

Kunz

Miesenberger

Weber

2018

Lecture Notes in Computer Science

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For comprehensively participating in society, independent and safe mobility is an important skill for many daily activities. Spatial cognition is one of the most important human capabilities and addresses the acquisition, processing and utilization of knowledge about the spatial layout of environments. Humans predominantly use the visual sense for this and for blind and low vision people, the lack of spatial perception reduces their quality of life and their ability of independent living. In particular the spatial navigation in unknown environments imposes challenges, since there is no possibility to train navigation tasks in advance. Today, blind and visually impaired people still rely on traditional navigation aids such as a cane for micro-navigation, which-however-does not help for developing orientation at larger scale or for planning of routes. To overcome this problem, this paper introduces the concept of a virtual environment that allows experiencing unknown locations by real walking while still staying in a sage controlled environment. Since this virtual environment can be controlled in its complexity, it can be adjusted from an abstract training scenario to a real-life situation such as train stations or airports.

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Interactive Audio-haptic Map Explorer on a Tactile Display

Cited by 28 publications

References 31 publications

Visually Augmented Audio-Tactile Graphics for Visually Impaired People

Visually Augmented Audio-Tactile Graphics for Visually Impaired People

From Open Geographical Data to Tangible Maps: Improving the Accessibility of Maps for Visually Impaired People

Virtual Navigation Environment for Blind and Low Vision People

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