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Guidance information providing apparatus, server apparatus, guidance information providing method, and program product

  • US 20040193369A1
  • Filed: 12/24/2003
  • Published: 09/30/2004
  • Est. Priority Date: 12/26/2002
  • Status: Active Grant
First Claim
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1. A guidance information providing apparatus comprising:

  • a first memory which stores network data including line segment data representing a passage in a target area of route guidance in an information map and point data representing a connecting point of the passage;

    a second memory which stores three-dimensional shape data representing a three-dimensional shape of the target area;

    an input unit which inputs a departure place and destination;

    a guiding route search unit which searches the first memory to acquire a guiding route connecting the input departure place and destination, on the basis of the network data;

    a viewpoint setting unit which sets a plurality of viewpoint position candidates for visualizing the guiding route in the target area expressed in the three-dimensional shape data;

    an evaluation unit which obtains an evaluation value of visibility, from each of the viewpoint position candidates, of the guiding route in the target area expressed in the three-dimensional shape data;

    an information map generating unit which generates the information map by determining a viewpoint position for generating the information map from the plurality of viewpoint position candidates on the basis of the evaluation value of visibility and by projecting the three-dimensional shape data from the determined viewpoint position; and

    a presentation unit configured to present the generated information map to a user.

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