| 摘要 |
A method and apparatus for retrieving information relevant to tracked objects appearing in a display of a video signal is disclosed. The method is performed by a viewing computer having stored thereon an augmented display tool. In response to a user requesting the video signal, a content directory storing content information relevant to the tracked objects is acquired from a video-overlay server. The augmented display tool causes the viewing computer to acquire and display the video signal and record a time measurement and spatial coordinates of each point selected by a viewer using a pointing device. The augmented display tool uses the content directory to find an object identifier corresponding to each selected point and extracts relevant information from a global object directory maintained at the video-overlay server.
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