TAILIEUCHUNG - Handbook of Multimedia for Digital Entertainment and Arts- P16

Handbook of Multimedia for Digital Entertainment and Arts- P16: The advances in computer entertainment, multi-player and online games, technology-enabled art, culture and performance have created a new form of entertainment and art, which attracts and absorbs their participants. The fantastic success of this new field has influenced the development of the new digital entertainment industry and related products and services, which has impacted every aspect of our lives. | 448 W. Hurst capabilities of handheld devices is a difficult task that is yet unsolved. In the remainder of the article we summarize our ongoing work in developing better interfaces that offer a richer browsing experience and therefore better usability of mobile video. A Short Review of Video Browsing Techniques for Larger Displays When browsing video for example to get an overview of the content of a file or to localize a specific position in order to answer some information need there are normally two major problems. First video is a continuous medium that changes over time. With a static medium such as text people always see some context at a time and can decide themselves at which speed they look at it. In contrast to this for video only a single frame of a sequence of time-ordered frames is shown for a time slot that depends on the playback speed . 1 25 sec for a typical video playback rate . Second there is often not much meta-information available to support users in their search and browsing tasks. Again think about browsing the pages of a book. Besides the actual content there is meta-information encoded for example in the header and footer. Spatial information such as the separation in different paragraphs illustrates related parts with regards to content. Headlines give a short summary of the following content. Different font styles such as bold face or italic are used to highlight important information and so on. In addition higher level meta-information exists such as an abstract printed on the cover of the book the content list at its beginning etc. All of this meta-information supports users in various browsing task. For video however comparable information is usually missing. Not surprisingly most existing research in digital video browsing tries to make up for this lack of meta-information by automatically extracting comparable information from videos and representing it in an appropriate way that supports users in their browsing tasks cf. .

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