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시각 장애인을 위한 모바일 어플리케이션 디자인

Mobile Application Design for People with Visual Impairment

조한슬 (Hanseul Cho, 포항공과대학교)

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초록 moremore
In this thesis, three mobile applications are proposed to solve problems which visually-impaired users are confronting: 1) calendar application; 2) camera/album application; 3) accessible mobile game for mixed-ability group. To utilize a smartphone not as a simple visual-to-audio converter but a...
In this thesis, three mobile applications are proposed to solve problems which visually-impaired users are confronting: 1) calendar application; 2) camera/album application; 3) accessible mobile game for mixed-ability group. To utilize a smartphone not as a simple visual-to-audio converter but as a key device to help visually-impaired users, their distinct characteristics were analyzed and applied to the designs of the three mobile applications. For the calendar application, the design was focused on delivering 2D information about schedules in easier ways using searching and vibration feedback. The result showed that using the proposed application, visually-impaired users could complete predetermined tasks in a shorter time with an improved satisfaction level than using a default iPhone calendar application. For the camera/album application, audio tagging function was proposed to help visually-impaired users recall photos' contents. Participants in a user study could utilize the proposed application to take and identify each photo. Finally, this thesis conceptualizes a new interaction concept, equal-level interaction, which aims to enable visually-impaired people to have the same roles and provide similar levels of contributions with sighted people in activities in mixed-ability groups. An effective audio-assistance method was suggested and applied to a smartphone application. Results demonstrate positive support for realizing equal-level interaction. The results of this thesis can contribute to designing accessible mobile UI/UX for visually-impaired users.
목차 moremore
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VII
I. Introduction 1
...
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VII
I. Introduction 1
1.1 Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Contribution . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Organization . . . . . . . . . . . . . . . . . . . . . . . . . . 4
II. VI Calendar 5
2.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Pre-Interview . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2.1 Participants' Information . . . . . . . . . . . . . . 7
2.2.2 Procedure . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.3 Results . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Application Design . . . . . . . . . . . . . . . . . . . . . . 12
2.4 User Study . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.4.1 Apparatus . . . . . . . . . . . . . . . . . . . . . . . 14
2.4.2 Participants . . . . . . . . . . . . . . . . . . . . . . 14
2.4.3 Procedure . . . . . . . . . . . . . . . . . . . . . . . 15
2.4.4 Experiment Tasks . . . . . . . . . . . . . . . . . . . 15
2.5 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.6 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.6.1 Task Completion Time . . . . . . . . . . . . . . . . 19
2.6.2 C1: Separation between Calendar Layout and
Event List . . . . . . . . . . . . . . . . . . . . . . . 19
2.6.3 C2: Weekly Information . . . . . . . . . . . . . . . 20
2.6.4 C3: Vibration Feedback . . . . . . . . . . . . . . . 21
2.6.5 C4: Time-Slot Searching Function . . . . . . . . . 22
2.6.6 Insights and Design Considerations . . . . . . . . 23
2.7 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
III. VI Camera 25
3.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.2 Pre-Interview . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.2.1 Participants' Information . . . . . . . . . . . . . . 27
3.2.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.3 Application Design . . . . . . . . . . . . . . . . . . . . . . 29
3.3.1 Camera . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.3.2 Gallery . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.4 User Study . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.4.1 Participants . . . . . . . . . . . . . . . . . . . . . . 34
3.4.2 Procedure . . . . . . . . . . . . . . . . . . . . . . . 36
3.5 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3.6 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.6.1 Photo Capturing . . . . . . . . . . . . . . . . . . . 39
3.6.2 Photo Sharing . . . . . . . . . . . . . . . . . . . . . 40
3.6.3 Overall Session . . . . . . . . . . . . . . . . . . . . 42
3.6.4 Observation . . . . . . . . . . . . . . . . . . . . . . 42
3.7 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
IV. Equal-Level Interaction 49
4.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
4.1.1 Collaborative Interaction for Mixed-Ability Users 50
4.1.2 Games for Visually Impaired Users . . . . . . . . 51
4.1.3 Accessible User Interface Design . . . . . . . . . . 51
4.2 Game Design for Equal-Level Interaction . . . . . . . . . 52
4.2.1 Game: Chase the Ace . . . . . . . . . . . . . . . . 52
4.2.2 User Interface . . . . . . . . . . . . . . . . . . . . . 53
4.3 User Study . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
4.3.1 Procedure . . . . . . . . . . . . . . . . . . . . . . . 56
4.4 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
4.5 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
4.5.1 UESz Factor . . . . . . . . . . . . . . . . . . . . . . 61
4.5.2 Observation . . . . . . . . . . . . . . . . . . . . . . 64
4.6 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
V. Conclusion 68
References 69