Point-of-Capture Archiving and Editing of Personal Experiences from a Mobile Device
Author(s)
Wu, Chon-In
Teng, Chao-Ming
Chen, Yi-Chao
Lin, Tung-Yun
Chu, Hao-Hua
Hsu, Yun-Jen
DOI
20060927122855976521
Abstract
Personal experience computing is an emerging research area in computing support for capturing, archiving, editing, and
utilizing of digital personal experiences. This paper presents our design, implementation, and evaluation of a mobile authoring
tool called mProducer that enables everyday users to effectively and efficiently perform archiving and editing at or
immediately after the point-of-capture of digital personal experiences from their camera-equipped mobile devices. This
point-of-capture capability is crucial to enable immediate sharing of digital personal experiences anytime, anywhere. For
example, we have seen everyday people who used handheld camcorders to capture and report their personal, eye-witnessed
experiences during the September 11 event. With mProducer, they would be able to perform editing immediately after the point
of capture, and then share these news-worthy, time-sensitive digital experiences on the Internet. To address the challenges in
both user interface constraints and limited system resources on a mobile device, mProducer provides the following innovative
system techniques and UI designs. (1) Keyframe-based editing UI enables everyday users to easily and efficiently edit recorded
digital experiences from a mobile device using only key frames with the storyboard metaphor. (2) Storage constrained
uploading (SCU) algorithm archives continuous multimedia data by uploading them to remote storage servers at the
point-of-capture, so that it alleviates the problem of limited storage on a mobile device. (3) Sensor-assisted automated editing
uses data from a GPS receiver and a tilt sensor attached to a mobile device to facilitate two manual editing steps at the
point-of-capture: removal of blurry frames from hand-induced camera shaking, and content search via location-based content
management. We have conducted user studies to evaluate mProducer. Results from the user studies have shown that mProducer
scores high in user satisfaction in editing experience, editing quality, task performance time, ease-of-use, and ease-of-learning.
Publisher
臺北市:國立臺灣大學資訊工程學系
Type
other
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