ROAD ESTIMATION DEVICE AND METHOD FOR ESTIMATING ROAD
First Claim
1. A road estimation device configured to receive data including a core point from an external object, the core point being assigned along a road and being assigned with attributes for identifying the road, the road estimation device further configured to extract a link pertinent to the road represented by the core point for estimating the road on a map, the road estimation device comprising:
- a map data input unit configured to input map data including links having attributes corresponding to the attributes of the core point;
a link extraction unit configured to extract a candidate link being candidate of the road represented by the core point from the map data according to the attribute of the link and the attributes of the core point, whereinthe link extraction unit is further configured to;
first implement a non-shape-relevant narrowing-down processing to narrow down links into candidate links, each of which has an attribute corresponding to a non-shape-relevant attribute of the attributes of the core point, according to the non-shape-relevant attribute being irrelevant to a road shape; and
subsequently implement a shape-relevant narrowing-down processing to narrow down the candidate links into a candidate link, which has an attribute corresponding to a shape-relevant attribute of the attributes of the core point, according to the shape-relevant attribute being relevant to the road shape.
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Accused Products
Abstract
A road estimation device receives data including a core point being assigned along a road and assigned with attributes for identifying the road. An input unit inputs map data including links having attributes corresponding to the attributes of the core point. An extraction unit first narrows down links into candidate links each having an attribute corresponding to a non-shape-relevant attribute of the core point. The extraction unit subsequently narrows down the candidate links into a candidate link having an attribute corresponding to a shape-relevant attribute of the core point, thereby to extract the candidate link pertinent to the road represented by the core point from the map data for estimating the road on a map.
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Citations
11 Claims
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1. A road estimation device configured to receive data including a core point from an external object, the core point being assigned along a road and being assigned with attributes for identifying the road, the road estimation device further configured to extract a link pertinent to the road represented by the core point for estimating the road on a map, the road estimation device comprising:
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a map data input unit configured to input map data including links having attributes corresponding to the attributes of the core point; a link extraction unit configured to extract a candidate link being candidate of the road represented by the core point from the map data according to the attribute of the link and the attributes of the core point, wherein the link extraction unit is further configured to; first implement a non-shape-relevant narrowing-down processing to narrow down links into candidate links, each of which has an attribute corresponding to a non-shape-relevant attribute of the attributes of the core point, according to the non-shape-relevant attribute being irrelevant to a road shape; and subsequently implement a shape-relevant narrowing-down processing to narrow down the candidate links into a candidate link, which has an attribute corresponding to a shape-relevant attribute of the attributes of the core point, according to the shape-relevant attribute being relevant to the road shape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for estimating a road, the method comprising:
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receiving data including a core point from an external object, the core point being assigned along a road and being assigned with attributes for identifying the road, the attributes of the core point including a non-shape-relevant attribute and a shape-relevant attribute, the non-shape-relevant attribute being irrelevant to a road shape, and the shape-relevant attribute being relevant to the road shape; inputting map data including links each having an attribute; first narrowing down links into candidate links each having an attribute corresponding to the non-shape-relevant attribute of the core point; and second narrowing down the candidate links into a candidate link having an attribute corresponding to the shape-relevant attribute of the core point thereby to extract the candidate link being candidate of the road represented by the core point from the map data.
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Specification