Method of determining a route as a function of the sinuosity index
First Claim
1. A method of determining routes between a point of departure (a) and a point of arrival (β
- ) for a digital road mapping system consisting of digital modeling elements of a road network comprising a set of segments representative of said road network and data relating to sinuosity for at least a portion of these segments, and including the following steps;
a route request is received including;
the points of departure and arrival;
the selected preferred sinuosity level;
a plurality of potential routes is identified;
each of said potential routes is assigned a rating as a function of its global sinuosity index established from the sinuosity index of each of the segments forming said potential routes;
the potential route whose sinuosity index best matches the sinuosity level of the request is selected.
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Abstract
The invention relates to a method of determining routes between a point of departure (α) and a point of arrival (β) for a digital road mapping system comprising a set of segments that are representative of a road network. The inventive method comprises the following steps consisting in: receiving a route request containing the points of departure and arrival and the selected, preferred sinuosity level; identifying a plurality of potential routes; assigning a value to each of the potential routes as a function of the global sinuosity index thereof, which is established from the sinuosity index of each of the segments forming the potential routes; and selecting the potential route with the sinuosity index that best corresponds to the sinuosity level of the request.
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Citations
12 Claims
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1. A method of determining routes between a point of departure (a) and a point of arrival (β
- ) for a digital road mapping system consisting of digital modeling elements of a road network comprising a set of segments representative of said road network and data relating to sinuosity for at least a portion of these segments, and including the following steps;
a route request is received including; the points of departure and arrival; the selected preferred sinuosity level; a plurality of potential routes is identified; each of said potential routes is assigned a rating as a function of its global sinuosity index established from the sinuosity index of each of the segments forming said potential routes; the potential route whose sinuosity index best matches the sinuosity level of the request is selected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- ) for a digital road mapping system consisting of digital modeling elements of a road network comprising a set of segments representative of said road network and data relating to sinuosity for at least a portion of these segments, and including the following steps;
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10. A device for determining routes between a point of departure (a) and a point of arrival (β
- ) for a digital road mapping system consisting of digital modeling elements of a road network comprising a set of segments representative of said road network and data relating to sinuosity for at least a portion of these segments, and including the following steps;
a data input unit for receiving the data associated with a point of departure a, a point of arrival β and
a desired sinuosity level for the route to be established;access to a storage unit comprising a set of road network modeling elements; a calculation unit designed for identifying a plurality of routes enabling each to connect points of departure and arrival taking into account the sinuosity index of the segments of each of the routes. - View Dependent Claims (11, 12)
- ) for a digital road mapping system consisting of digital modeling elements of a road network comprising a set of segments representative of said road network and data relating to sinuosity for at least a portion of these segments, and including the following steps;
Specification