B-01 観察から抽出したデザイン課題の再生・共有支援手法 : 注視点付きシーン動画による再生・共有(ロバストデザイン,ユニバーサルデザイン,ユーザビリティ(デザイン理論・方法論研究部会),「想像」する「創造」〜人間とデザインの新しい関係〜,第56回春季研究発表大会)

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Observation has been recognized as an effective approach to finding out user's potential needs in the upstream design process. In user observation, we observe a user while he/she interacts with artifacts and the environment to find potential problems that he/she faces. Oftentimes, a memo of the findings is recorded. After the observation, we share the observed findings with other observers and discuss their causes and solutions. In this paper, the authors discuss three issues regarding the current state of observation: 1) missed clues of the finding due to the recording technique, 2) the efficiency in reviewing the findings and 3) the difficulty of sharing findings with others. Against those issues, we propose a new observation process and a system that supports effective execution of the process. The process consists of three phases. In the first phase, the observer concentrates only on finding clues to problems. The proposed system allows the observer to put time indices on the recording video whenever he/she finds a clue. The system records the observer's gaze movement during the observation. As a recording technique, time indexing takes less effort than recording memos, so that missed findings should be reduced hi the second phase, the observer describes the found problems. To replay found clues, the system shows the observer a short video sequence with gaze plots that starts a few seconds before the indexed time. The indexed video sequence and recorded gaze movement offer context information on what clues to problems the observer found and when. In the third phase, multiple observers share their findings in order to cover any missed scenes and add different viewpoints. The system extracts scenes that the observers missed. The system allows us to view short video sequences with the original observer's gaze plot of the missed scene. The video with gaze plot offers a context and deepens our understanding. Showing the video and gaze plot of the missed scene without a problem description allows us to find the problem from the observer's original viewpoint We carried out experiments to demonstrate the effectiveness of the support system using a user video in a kitchen environment.
2009-06-20

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