DejaView: a personal virtual computer recorder
DejaView: a personal virtual computer recorder
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DOI：
10.1145/1294261.1294289
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发表时间：
2007-10
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影响因子：
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通讯作者：
Oren Laadan;Ricardo A. Baratto;Dan B. Phung;S. Potter;Jason Nieh
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作者：
Oren Laadan;Ricardo A. Baratto;Dan B. Phung;S. Potter;Jason Nieh
随着用户通过计算机与世界和同龄人进行交互，存档并随后搜索他们查看的信息变得越来越重要。我们提出DejaView，个人虚拟计算机记录器，提供了一个完整的记录，用户可以播放，浏览，搜索和恢复无缝的桌面计算体验。DejaView记录可视化输出，检查相应的应用程序和文件系统状态，并捕获显示的文本和上下文信息以索引记录。然后，用户可以浏览和搜索记录以寻找已经显示在桌面上的任何视觉信息，并且恢复对应于记录中的任何点的桌面计算状态并与之交互。DejaView结合了显示、操作系统和文件系统虚拟化，以透明地提供其功能，而无需对应用程序、窗口系统或操作系统内核进行任何修改。我们已经实现了DejaView，并评估了它在实际桌面应用程序上的性能。我们的研究结果表明，DejaView可以提供连续的低开销记录没有任何用户明显的性能下降，并允许浏览，搜索和回放记录足够快的交互式使用。
As users interact with the world and their peers through their computers, it is becoming important to archive and later search the information that they have viewed. We present DejaView, a personal virtual computer recorder that provides a complete record of a desktop computing experience that a user can playback, browse, search, and revive seamlessly. DejaView records visual output, checkpoints corresponding application and file system state, and captures displayed text with contextual information to index the record. A user can then browse and search the record for any visual information that has been displayed on the desktop, and revive and interact with the desktop computing state corresponding to any point in the record. DejaView combines display, operating system, and file system virtualization to provide its functionality transparently without any modifications to applications, window systems, or operating system kernels. We have implemented DejaView and evaluated its performance on real-world desktop applications. Our results demonstrate that DejaView can provide continuous low-overhead recording without any user noticeable performance degradation, and allows browsing, search and playback of records fast enough for interactive use.