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/lp/association-for-computing-machinery/video-tapestries-with-continuous-temporal-zoom-7L0wBu4eFY
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- Publisher
- Association for Computing Machinery
- Copyright
- The ACM Portal is published by the Association for Computing Machinery. Copyright © 2010 ACM, Inc.
- ISSN
- 0730-0301
- DOI
- 10.1145/1778765.1778826
- Publisher site
- See Article on Publisher Site
Abstract
We present a novel approach for summarizing video in the form of a multiscale image that is continuous in both the spatial domain and across the scale dimension: There are no hard borders between discrete moments in time, and a user can zoom smoothly into the image to reveal additional temporal details. We call these artifacts tapestries because their continuous nature is akin to medieval tapestries and other narrative depictions predating the advent of motion pictures. We propose a set of criteria for such a summarization, and a series of optimizations motivated by these criteria. These can be performed as an entirely offline computation to produce high quality renderings, or by adjusting some optimization parameters the later stages can be solved in real time, enabling an interactive interface for video navigation. Our video tapestries combine the best aspects of two common visualizations, providing the visual clarity of DVD chapter menus with the information density and multiple scales of a video editing timeline representation. In addition, they provide continuous transitions between zoom levels. In a user study, participants preferred both the aesthetics and efficiency of tapestries over other interfaces for visual browsing.
Journal
ACM Transactions on Graphics (TOG) – Association for Computing Machinery
Published: Jul 26, 2010