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URN etd-0914109-132644 Statistics This thesis had been viewed 2425 times. Download 667 times. Author Pei-Jung Chiang Author's Email Address No Public. Department Industrial Design Year 2008 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 151 Title A study on the Tactile Number Recognition for Individuals with Visual Impairment Keyword tactile illusion Arabic numerals visually impaired individual tactile number elevator control buttons elevator control buttons tactile number visually impaired individual Arabic numerals tactile illusion Abstract The purpose of this study was to explore the performance of recognition for tactile numbers applied to buttons of elevator. The effect can take care of all of the visually impaired and provide favorable frame of reference for tactile marked for a variety of products.
There were two experiments in this study. The first experiment was to explore the performance of tactile number recognition not only by measuring the recognition rate and the recognition time but also asking the subjects to predict the possible reasons for this kind of tactile illusion. The 12 blindfolded sighted students were asked to recognize 4 different tactile number sheets which had 40 randomized numbers in each. The ANOVA showed that the number without a circle frame had the better recognition rate and time than the number with a frame, and also the male subjects had the better performance than the female. The font with an equal width in all strokes had the significantly lower recognition time than the font without an equal width in all strokes but not at the recognition rate. There was no different found between vertical and horizontal arrangements. The illusion pairs and error rate were: 1 mistaken for 7 (11.7%); 9 mistaken for 0 (10.2%); 6 mistaken for 0 (8.7%); 8 mistaken for 6 (5.3%); 3 mistaken for 5 (4.9%); 7 mistaken for 1 (4.5%); 5 mistaken for 3 (3.7%). The major reasons for these mistakes were subjectively considered to be the number frame, font, size, and tactile height.
The experiment 2 were「elevator control buttons experiment」which simulate operate of the elevator contro1 buttons with 15 participants who were visual impairment to recognize 8 different tactile number sheets. The ANOVA showed that 「arrangement of buttons」 and the 「rows of buttons」without significant differences in recognition time and recognition error.『Recognition time』and『Recognition error』from the levels of cognitive category factor shown significant differences, the people just know Braille had the best performance. The performance of people who just know Arabic numerals was the worst. Recognition time』 and 『Recognition error』from the levels of recognition method factor shown significant differences, The performance of people who recognition only by tactile numbers was the worst.
The results and conclusions might be referred at the design of elevator control buttons and other related research.
Advisor Committee Yung-Hsiang Tu - advisor
Files Date of Defense 2009-07-13 Date of Submission 2009-09-14