A cheap, portable haptic device for a method to relay 2-D texture-enriched graphical information to individuals who are visually impaired

Burch, David; Pawluk, Dianne T. V.

doi:10.1145/1639642.1639682

Cited by 8 publications

(4 citation statements)

References 4 publications

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“…The system of Burch and Pawluk previously mentioned [17] uses a fingertip photosensor and piezoelectric stimulator to scan specially created graphical displays, in which texture is added to enhance perception of edges and orientations. A single photosensor thus suffices for this purpose, only because preprocessing is performed to populate regions on either side of boundaries with differing textures.…”

Section: Discussionmentioning

confidence: 99%

“…The subject was capable of locating light sources in a 3D space. Another system, developed by Burch and Pawluk, is mounted on the same finger as the sensor, for interacting with graphical objects on a flat screen [17] . This system senses a single RGB pixel at a short distance (i.e., to the screen that the subject is touching), and vibrates based upon the color sensed.…”

Section: Introductionmentioning

confidence: 99%

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FingerSight: Fingertip Haptic Sensing of the Visual Environment

Horvath

Galeotti

et al. 2014

IEEE J. Transl. Eng. Health Med.

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We present a novel device mounted on the fingertip for acquiring and transmitting visual information through haptic channels. In contrast to previous systems in which the user interrogates an intermediate representation of visual information, such as a tactile display representing a camera generated image, our device uses a fingertip-mounted camera and haptic stimulator to allow the user to feel visual features directly from the environment. Visual features ranging from simple intensity or oriented edges to more complex information identified automatically about objects in the environment may be translated in this manner into haptic stimulation of the finger. Experiments using an initial prototype to trace a continuous straight edge have quantified the user's ability to discriminate the angle of the edge, a potentially useful feature for higher levels analysis of the visual scene.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

FingerSight: Fingertip Haptic Sensing of the Visual Environment

Horvath

Galeotti

et al. 2014

IEEE J. Transl. Eng. Health Med.

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“…However since frequency is a linear value and hue is cyclical, this creates a break between colour neighbours (i.e., HSB neighbouring colours violet and red represented furthest apart in frequencies). Burch (2012;Burch and Pawluk, 2009) describes a device with multiple finger-mounted RGB sensors that compares RGB values with 15 pre-set colour categories which have associated vibrotactile stimulations delivered to the fingertip (Fig. 7).…”

Section: Chromo-haptic Sensor-tactor Device Chst (2008)mentioning

confidence: 99%

Representing Colour Through Hearing and Touch in Sensory Substitution Devices

Hamilton-Fletcher

Ward

2013

Multisens Res

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Visual sensory substitution devices (SSDs) allow visually-deprived individuals to navigate and recognise the 'visual world'; SSDs also provide opportunities for psychologists to study modality-independent theories of perception. At present most research has focused on encoding greyscale vision. However at the low spatial resolutions received by SSD users, colour information enhances object-ground segmentation, and provides more stable cues for scene and object recognition. Many attempts have been made to encode colour information in tactile or auditory modalities, but many of these studies exist in isolation. This review brings together a wide variety of tactile and auditory approaches to representing colour. We examine how each device constructs 'colour' relative to veridical human colour perception and report previous experiments using these devices. Theoretical approaches to encoding and transferring colour information through sound or touch are discussed for future devices, covering alternative stimulation approaches, perceptually distinct dimensions and intuitive cross-modal correspondences.

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“…Most kinetic displays manipulate the shape of the surface with actuators, including electric motors [2,14,16], piezoelectric actuators [4,11,13], Nitinol wire [17], and pneumatic pressure [18]. Mechanical actuators pose several disadvantages.…”

Section: Related Workmentioning

confidence: 99%

Tactile display for the visually impaired using TeslaTouch

Israr

Poupyrev

et al. 2011

CHI '11 Extended Abstracts on Human Factors in Computing Systems

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TeslaTouch is a technology that provides tactile sensation to moving fingers on touch screens. Based on TeslaTouch, we have developed applications for the visually impaired to interpret and create 2D tactile information. In this paper, we demonstrate these applications, present observations from the interaction, and discuss TeslaTouch's potential in supporting communication among visually impaired individuals.

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A cheap, portable haptic device for a method to relay 2-D texture-enriched graphical information to individuals who are visually impaired

Cited by 8 publications

References 4 publications

FingerSight: Fingertip Haptic Sensing of the Visual Environment

FingerSight: Fingertip Haptic Sensing of the Visual Environment

Representing Colour Through Hearing and Touch in Sensory Substitution Devices

Tactile display for the visually impaired using TeslaTouch

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