The Experts below are selected from a list of 86847 Experts worldwide ranked by ideXlab platform
Kevin M Kramer - One of the best experts on this subject based on the ideXlab platform.
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learning non visual Graphical Information using a touch based vibro audio interface
Conference on Computers and Accessibility, 2012Co-Authors: Nicholas A Giudice, Hari Prasath Palani, Eric Brenner, Kevin M KramerAbstract:This paper evaluates an inexpensive and intuitive approach for providing non-visual access to graphic material, called a vibro-audio interface. The system works by allowing users to freely explore Graphical Information on the touchscreen of a commercially available tablet and synchronously triggering vibration patterns and auditory Information whenever an on-screen visual element is touched. Three studies were conducted that assessed legibility and comprehension of the relative relations and global structure of a bar graph (Exp 1), Pattern recognition via a letter identification task (Exp 2), and orientation discrimination of geometric shapes (Exp 3). Performance with the touch-based device was compared to the same tasks performed using standard hardcopy tactile graphics. Results showed similar error performance between modes for all measures, indicating that the vibro-audio interface is a viable multimodal solution for providing access to dynamic visual Information and supporting accurate spatial learning and the development of mental representations of Graphical material.
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ASSETS - Learning non-visual Graphical Information using a touch-based vibro-audio interface
Proceedings of the 14th international ACM SIGACCESS conference on Computers and accessibility - ASSETS '12, 2012Co-Authors: Nicholas A Giudice, Hari Prasath Palani, Eric Brenner, Kevin M KramerAbstract:This paper evaluates an inexpensive and intuitive approach for providing non-visual access to graphic material, called a vibro-audio interface. The system works by allowing users to freely explore Graphical Information on the touchscreen of a commercially available tablet and synchronously triggering vibration patterns and auditory Information whenever an on-screen visual element is touched. Three studies were conducted that assessed legibility and comprehension of the relative relations and global structure of a bar graph (Exp 1), Pattern recognition via a letter identification task (Exp 2), and orientation discrimination of geometric shapes (Exp 3). Performance with the touch-based device was compared to the same tasks performed using standard hardcopy tactile graphics. Results showed similar error performance between modes for all measures, indicating that the vibro-audio interface is a viable multimodal solution for providing access to dynamic visual Information and supporting accurate spatial learning and the development of mental representations of Graphical material.
Nicholas A Giudice - One of the best experts on this subject based on the ideXlab platform.
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learning non visual Graphical Information using a touch based vibro audio interface
Conference on Computers and Accessibility, 2012Co-Authors: Nicholas A Giudice, Hari Prasath Palani, Eric Brenner, Kevin M KramerAbstract:This paper evaluates an inexpensive and intuitive approach for providing non-visual access to graphic material, called a vibro-audio interface. The system works by allowing users to freely explore Graphical Information on the touchscreen of a commercially available tablet and synchronously triggering vibration patterns and auditory Information whenever an on-screen visual element is touched. Three studies were conducted that assessed legibility and comprehension of the relative relations and global structure of a bar graph (Exp 1), Pattern recognition via a letter identification task (Exp 2), and orientation discrimination of geometric shapes (Exp 3). Performance with the touch-based device was compared to the same tasks performed using standard hardcopy tactile graphics. Results showed similar error performance between modes for all measures, indicating that the vibro-audio interface is a viable multimodal solution for providing access to dynamic visual Information and supporting accurate spatial learning and the development of mental representations of Graphical material.
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ASSETS - Learning non-visual Graphical Information using a touch-based vibro-audio interface
Proceedings of the 14th international ACM SIGACCESS conference on Computers and accessibility - ASSETS '12, 2012Co-Authors: Nicholas A Giudice, Hari Prasath Palani, Eric Brenner, Kevin M KramerAbstract:This paper evaluates an inexpensive and intuitive approach for providing non-visual access to graphic material, called a vibro-audio interface. The system works by allowing users to freely explore Graphical Information on the touchscreen of a commercially available tablet and synchronously triggering vibration patterns and auditory Information whenever an on-screen visual element is touched. Three studies were conducted that assessed legibility and comprehension of the relative relations and global structure of a bar graph (Exp 1), Pattern recognition via a letter identification task (Exp 2), and orientation discrimination of geometric shapes (Exp 3). Performance with the touch-based device was compared to the same tasks performed using standard hardcopy tactile graphics. Results showed similar error performance between modes for all measures, indicating that the vibro-audio interface is a viable multimodal solution for providing access to dynamic visual Information and supporting accurate spatial learning and the development of mental representations of Graphical material.
Dimitrios Rigas - One of the best experts on this subject based on the ideXlab platform.
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The rising pitch metaphor: an empirical study
International Journal of Human-Computer Studies, 2005Co-Authors: Dimitrios Rigas, James L AltyAbstract:This paper describes a set of experiments that investigated the use of rising pitch notes to communicate Graphical Information to visually impaired users. The Information communicated in the experiments included coordinate locations within a 40 × 40 Graphical grid, the navigation of an auditory cursor within the Graphical grid, the communication of simple Graphical shapes and their size. The five simple shapes communicated were rectangles, squares, circles, horizontal and vertical lines. Stereophony, timbre, rhythms, and short tunes were used in addition to the rising pitch metaphor to aid disambiguation. Results suggested that the rising pitch approach enabled visually impaired users to understand the Graphical Information communicated in the absence of any visual aid. The paper concludes with a discussion of the use of rising pitch metaphor to communicate Graphical Information.
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communicating Graphical Information to blind users using music the role of context
Human Factors in Computing Systems, 1998Co-Authors: James L Alty, Dimitrios RigasAbstract:We describe the design and use of AUDIOGRAPH - a tool for investigating the use of music in the communication of Graphical Information to blind and partially sighted users. This paper examines the use of the system to communicate complex diagrams and gives some examples of user output. Performance is not as good as expected and it is postulated that context will play an important part in the perception of diagrams communicated using music. A set of experiments are reported which indicate that context does indeed seem to play an important role in assisting meaningful understanding of the diagrams communicated. The implications for using music in auditory interface design are discussed.
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CHI - Communicating Graphical Information to blind users using music: the role of context
Proceedings of the SIGCHI conference on Human factors in computing systems - CHI '98, 1998Co-Authors: James L Alty, Dimitrios RigasAbstract:We describe the design and use of AUDIOGRAPH - a tool for investigating the use of music in the communication of Graphical Information to blind and partially sighted users. This paper examines the use of the system to communicate complex diagrams and gives some examples of user output. Performance is not as good as expected and it is postulated that context will play an important part in the perception of diagrams communicated using music. A set of experiments are reported which indicate that context does indeed seem to play an important role in assisting meaningful understanding of the diagrams communicated. The implications for using music in auditory interface design are discussed.
Vidas Lauruska - One of the best experts on this subject based on the ideXlab platform.
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HCI (6) - Sonification system of maps for blind
Universal Access in Human-Computer Interaction. Ambient Interaction, 2007Co-Authors: Gintautas Daunys, Vidas LauruskaAbstract:Presentation of Graphical Information is very important for blind. This Information will help blind better understand surrounding world. The developed system is devoted for investigation of Graphical Information by blind user using a digitiser. SVG language with additional elements is used for describing of maps. Non-speech sounds are used to transfer Information about colour. Alerting sound signal is issued near two regions boundary.
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Maps sonification system using digitiser for visually impaired children
Lecture Notes in Computer Science, 2006Co-Authors: Gintautas Daunys, Vidas LauruskaAbstract:Presentation of Graphical Information is key problem during teaching of visually impaired children. The developed system is devoted for investigation of Graphical Information by blind user using a digitiser. SVG language with additional elements is used for describing of maps. Non-speech sounds are used to transfer Information about colour. Alerting sound signals is issued near two regions boundary.
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ICCHP - Maps sonification system using digitiser for visually impaired children
Lecture Notes in Computer Science, 2006Co-Authors: Gintautas Daunys, Vidas LauruskaAbstract:Presentation of Graphical Information is key problem during teaching of visually impaired children. The developed system is devoted for investigation of Graphical Information by blind user using a digitiser. SVG language with additional elements is used for describing of maps. Non-speech sounds are used to transfer Information about colour. Alerting sound signals is issued near two regions boundary
A. V. Tolok - One of the best experts on this subject based on the ideXlab platform.
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Dichotomous indexing of array in recursive construction of voxel-graphic images
Automation and Remote Control, 2014Co-Authors: S. N. Grigor'ev, A. V. TolokAbstract:Rapid development of the cluster multiprocessor computer systems allows one to pose to the designers of the computer-Graphical systems the problem of organization of Graphical Information enabling efficient use of the parallel algorithms. Consideration was given to the use of the dichotomous principle of binary construction of a numerical sequence for successive indexing of the elements of a multidimensional array in the problems of recursive decomposition of the multidimensional space. This principle was used to advantage in recursive construction of the voxel Graphical Information used in the program accelerators of Graphical processing based on parallelization of the algorithm and partial sorting of the Graphical output flow in terms of the recursion depth.
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COMPUTER-AIDED Information CONTROL SYSTEMS, PROCESS CONTROL SYSTEMS Dichotomous Indexing of Array in Recursive Construction of Voxel-Graphic Images
2014Co-Authors: S. N. Grigor, A. V. TolokAbstract:Rapid development of the cluster multiprocessor computer systems allows one to pose to the designers of the computer-Graphical systems the problem of organization of Graphical Information enabling efficient use of the parallel algorithms. Consideration was given to the use of the dichotomous principle of binary construction of a numerical sequence for successive indexing of the elements of a multidimensional array in the problems of recursive decomposition of the multidimensional space. This principle was used to advantage in recursive construction of the voxel Graphical Information used in the program accelerators of Graphical processing based on parallelization of the algorithm and partial sorting of the Graphical output flow in terms of the recursion depth.
