Abstract
Traditional tactile diagrams for the visually-impaired (VI) use short Braille keys and annotations to provide additional information in separate Braille legend pages. Frequent navigation between the tactile diagram and the annex pages during the diagram exploration results in low efficiency in diagram comprehension. We present the design of FingerTalkie, a finger-worn device that uses discrete colors on a color-tagged tactile diagram for interactive audio labeling of the graphical elements. Through an iterative design process involving 8 VI users, we designed a unique offset point-and-click technique that enables the bimanual exploration of the diagrams without hindering the tactile perception of the fingertips. Unlike existing camera-based and finger-worn audio-tactile devices, FingerTalkie supports one-finger interaction and can work in any lighting conditions without calibration. We conducted a controlled experiment with 12 blind-folded sighted users to evaluate the usability of the device. Further, a focus-group interview with 8 VI users shows their appreciation for the FingerTalkie’s ease of use, support for two-hand exploration, and its potential in improving the efficiency of comprehending tactile diagrams by replacing Braille labels.
| Original language | English |
|---|---|
| Title of host publication | Human-Computer Interaction. Multimodal and Natural Interaction - Thematic Area, HCI 2020, Held as Part of the 22nd International Conference, HCII 2020, Proceedings |
| Editors | Masaaki Kurosu |
| Publisher | Springer |
| Pages | 475-496 |
| Number of pages | 22 |
| ISBN (Print) | 9783030490614 |
| DOIs | |
| State | Published - 2020 |
| Externally published | Yes |
| Event | Thematic Area on Human Computer Interaction, HCI 2020, held as part of the 22nd International Conference on Human-Computer Interaction, HCII 2020 - Copenhagen, Denmark Duration: 19 Jul 2020 → 24 Jul 2020 |
Publication series
| Name | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
|---|---|
| Volume | 12182 LNCS |
| ISSN (Print) | 0302-9743 |
| ISSN (Electronic) | 1611-3349 |
Conference
| Conference | Thematic Area on Human Computer Interaction, HCI 2020, held as part of the 22nd International Conference on Human-Computer Interaction, HCII 2020 |
|---|---|
| Country/Territory | Denmark |
| City | Copenhagen |
| Period | 19/07/20 → 24/07/20 |
Bibliographical note
Publisher Copyright:© 2020, Springer Nature Switzerland AG.
Keywords
- Audio-tactile diagram
- Blind
- Finger-worn device
- Offset point and click
- Visually impaired
ASJC Scopus subject areas
- Theoretical Computer Science
- General Computer Science
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