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HICSS '04 Proceedings of the Proceedings of the 37th Annual Hawaii International Conference on System Sciences (HICSS'04) - Track 4 - Volume 4
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Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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Proceedings of the 13th annual ACM international conference on Multimedia
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HICSS '07 Proceedings of the 40th Annual Hawaii International Conference on System Sciences
A robust preprocessing algorithm for low-resolution soccer videos
Proceedings of the international workshop on Workshop on mobile video
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Proceedings of the 15th international conference on Multimedia
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Proceedings of the 10th international conference on Human computer interaction with mobile devices and services
EUROITV '08 Proceedings of the 6th European conference on Changing Television Environments
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EUROITV '08 Proceedings of the 6th European conference on Changing Television Environments
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EuroITV'07 Proceedings of the 5th European conference on Interactive TV: a shared experience
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IEEE Transactions on Multimedia
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IEEE Transactions on Multimedia
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IEEE Transactions on Multimedia
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IEEE Transactions on Image Processing
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In mobile videos, small viewing size and bitrate limitation often cause unpleasant viewing experiences, which is particularly important for fast-moving sports videos. For optimizing the overall user experience of viewing sports videos on mobile phones, this paper explores the benefits of emphasizing Region of Interest (ROI) by 1) zooming in and 2) enhancing the quality. The main goal is to measure the effectiveness of these two approaches and determine which one is more effective. To obtain a more comprehensive understanding of the overall user experience, the study considers user's interest in video content and user's acceptance of the perceived video quality, and compares the user experience in sports videos with other content types such as talk shows. The results from a user study with 40 subjects demonstrate that zooming and ROI-enhancement are both effective in improving the overall user experience with talk show and mid-shot soccer videos. However, for the full-shot scenes in soccer videos, only zooming is effective while ROI-enhancement has a negative effect. Moreover, user's interest in video content directly affects not only the user experience and the acceptance of video quality, but also the effect of content type on the user experience. Finally, the overall user experience is closely related to the degree of the acceptance of video quality and the degree of the interest in video content. This study is valuable in exploiting effective approaches to improve user experience, especially in mobile sports video streaming contexts, whereby the available bandwidth is usually low or limited. It also provides further understanding of the influencing factors of user experience.