Touch-screen technology for the dynamic display of -2D spatial information without vision: promise and progress.
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This work points out constraints and limitations in haptic processing that affect the use of touch-screen technology for developing aids for the blind, and suggests ways to use sound to augment basic information from touch.Abstract:
Many developers wish to capitalize on touch-screen technology for developing aids for the blind, particularly by incorporating vibrotactile stimulation to convey patterns on their surfaces, which otherwise are featureless. Our belief is that they will need to take into account basic research on haptic perception in designing these graphics interfaces. We point out constraints and limitations in haptic processing that affect the use of these devices. We also suggest ways to use sound to augment basic information from touch, and we include evaluation data from users of a touch-screen device with vibrotactile and auditory feedback that we have been developing, called a vibro-audio interface.read more
Citations
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Book ChapterDOI
Accessible Interactive Maps for Visually Impaired Users
TL;DR: This chapter presents an exhaustive review of interactive map prototypes and classified existing interactive maps into two categories: Digital Interactive Maps that are displayed on a flat surface such as a screen; and Hybrid Interactive Maps (HIMs) that include both a digital and a physical representation.
Journal ArticleDOI
Designing Media for Visually-Impaired Users of Refreshable Touch Displays: Possibilities and Pitfalls
TL;DR: In this article, the influence of human factors on the effectiveness of presentation as well as the strengths and weaknesses of tactile, vibrotactile, haptic, and multimodal methods of rendering maps, graphs, and models are discussed.
OtherDOI
Navigating without vision: principles of blind spatial cognition
TL;DR: In this paper, the authors consider what it means to learn and navigate the world with limited or no vision and provide guidance on the development of new spatial learning strategies and technological solutions that will ultimately have a significant positive impact on the independence and quality of life of this demographic.
Journal ArticleDOI
Designing Haptic Assistive Technology for Individuals Who Are Blind or Visually Impaired
TL;DR: There is a wealth of behavioral research that is highly applicable to assistive technology design and issues relevant for the design and use of haptic technology for assistive devices for individuals who are blind or visually impaired are considered.
Proceedings ArticleDOI
Gesture-Based Interactive Audio Guide on Tactile Reliefs
TL;DR: A gesture-controlled interactive audio guide (IAG) based on recent low-cost depth cameras that operates directly on relief surfaces that promise rapid tactile accessibility to 2.5D spatial information in a home or education setting, to on-line resources, or as a kiosk installation at public places.
References
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Journal ArticleDOI
Spatial Hearing: The Psychophysics of Human Sound Localization by Jens Blauert
Jens Blauert,Robert A. Butler +1 more
Book
Spatial Hearing: The Psychophysics of Human Sound Localization
TL;DR: In this article, the physics of the external ear (transfer functions of external ear, area function and termination of the ear canal, analysis of transfer characteristics) evaluation of monaural attributes of ear input signals (lateralization and multiple auditory events, summing localization and the law of the first wavefront, inhibition of the primary sound) two sound sources radiating partially coherent or incoherent signals (the influence of the degree of coherence, binaural signal detection) more than two sound source and diffuse sound fields.
Journal ArticleDOI
Earcons and icons: their structure and common design principles
TL;DR: Some design principles that are common to both visual symbols and auditory messages are identified, and the use of representational and abstract icons and earcons are discussed.
Journal ArticleDOI
An experimental system for auditory image representations
TL;DR: Computerized sampling of the system output and subsequent calculation of the approximate inverse (sound-to-image) mapping provided the first convincing experimental evidence for the preservation of visual information in sound representations of complicated images.
Journal ArticleDOI
Haptic perception: a tutorial.
TL;DR: This tutorial focuses on the sense of touch within the context of a fully active human observer and describes an extensive body of research on “what” and “where” channels, the former dealing with haptic perception of objects, surfaces, and their properties, and the latter with perception of spatial layout on the skin and in external space relative to the perceiver.