A User Study on Tactile Graphic Generation Methods

Autor/inn/en	Krufka, S. E.; Barner, K. E.
Titel	A User Study on Tactile Graphic Generation Methods
Quelle	In: Behaviour & Information Technology, 25 (2006) 4, S.297-311 (15 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0144-929X
Schlagwörter	Blindness; Stimuli; Validity; Comprehension; Visual Discrimination; Spatial Ability; Computer Graphics; Comparative Analysis; Manipulative Materials + Suchen Sie Ihr Suchwort? Blindheit; Anreizsystem; Gültigkeit; Verstehen; Verständnis; Räumliches Vorstellungsvermögen; Computergrafik; Hilfsmittel
Abstract	Methods to automatically convert graphics into tactile representations have been recently investigated, creating either raised-line or relief images. In particular, we briefly review one raised-line method where important features are emphasized. This paper focuses primarily on the effects of such emphasis and on comparing both raised-line and relief methods (produced by a Tiger Braille printer) through psychophysical experiments including discrimination, identification, and comprehension (involving 14 sighted and 6 blind subjects). Results show that raised-line pictures outperform relief images in all three tasks. Also, emphasizing important features significantly increases comprehension of tactile graphics. Raised-line images, however, disregard intensity/colour information unlike relief pictures. A technique incorporating intensity into raised-line graphics is also presented. Further experiments show the validity of this technique. (Contains 11 figures and 3 tables.) (Author).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10