| 摘要 |
An interface is provided to a mobile navigation system in which an optical image of a point-of-interest acquired by cellular telephone devices is an input to the system. Textual and optionally other location information is extracted from the image, and used by the navigation system to identify coordinates and vectors relating to the point-of-interest. The results are stored and may be subsequently recalled to provide mapping and routing information to the cellular telephone device, whose position relative to the point-of-interest may have changed. Optical images may be uploaded from telephone device to the navigation system automatically or interactively, and can be processed remotely, generally without further user interaction.
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