MAP INFORMATION PROCESSING DEVICE, MAP INFORMATION PROCESSING METHOD, AND METHOD FOR ADJUSTING UPDATE DATA
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Abstract
The present invention has an object to provide a technique capable of reducing the size of update data. A map information processing apparatus includes a data extractor that extracts a difference between a shape of a past road link and a shape of a current road link as update data for updating predetermined map information. The data extractor does not extract the difference as the update data in a case where one road link of the past road link and the current road link is included in a buffer region obtained by extending the shape of the other road link by a predetermined distance.
15 Citations
24 Claims
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1-11. -11. (canceled)
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12. A map information processing apparatus comprising:
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a receiver that receives past map information including a past road link and current map information including a current road link; and a data extractor that extracts a difference between a shape of said past road link and a shape of said current road link as update data for updating predetermined map information, wherein said data extractor does not extract said difference as said update data in a case where one road link of said past road link and said current road link is included in a buffer region obtained by extending the shape of the other road link by a predetermined distance. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A map information processing method comprising the steps of:
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(a) acquiring past map information including a past road link and current map information including a current road link; and (b) extracting a difference between a shape of said past road link and a shape of said current road link as update data for updating predetermined map information, wherein in said step (b), said difference is not extracted as said update data in a case where one road link of said past road link and said current road link is included in a buffer region obtained by extending the shape of the other road link by a predetermined distance.
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Specification