The average consumer with a personal computer will soon have access to the world's collections of digital video and images. However, the theory and tools that facilitate browsing, querying, retrieval, and manipulation of imagery are still in their infancy. For example, people would like to access content in movies, e.g. ``fast forward to where they bicycle through the sky.'' This new application area reveals an abundance of unsolved scientific problems for image processing. In this paper I overview key technical challenges that the image processing community should embrace.
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