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Method and apparatus for extracting two-lane road on map

A technology of roads and maps, applied to instruments, character and pattern recognition, computer components, etc., can solve the problems of high quality road data and dependence on road element attribute information

Active Publication Date: 2016-12-07
THE PLA INFORMATION ENG UNIV
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Problems solved by technology

By analyzing the geometric characteristics of two-lane roads, the present invention provides a method and device for extracting two-lane roads on a map, aiming to solve the problem that existing two-lane road extraction methods rely too much on road element attribute information and have low requirements for road data quality. high problem

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  • Method and apparatus for extracting two-lane road on map

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Embodiment Construction

[0040] The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings.

[0041] Embodiments of the method for extracting two-line roads on a map of the present invention

[0042] The two-lane road extraction method of the present embodiment includes the following steps:

[0043] 1) Select any road curve L on the map, establish a buffer zone with the road curve L as the center and R as the radius, and find the road curve contained in the buffer zone or intersecting the buffer zone to construct a matching candidate set of the road curve L;

[0044] 2) Calculate the included angle between the road curve L and the road curve in the matching candidate set, and according to the included angle, determine the directional consistency of the road curve in the matching candidate set and the road curve L;

[0045] 3) Calculate the distance between the road curve L and the road curve in the matching candidate set, and...

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Abstract

The invention relates to a method and an apparatus for extracting a two-lane road on a map. The method comprises the steps of 1) selecting any road curve L, establishing a buffer area which takes L as a center and R as a radius, and looking for road curves contained in the buffer area or intersected with the buffer area to establish a matching candidate set of L; 2) calculating an included angle between L and each road curve in the matching candidate set, and judging direction consistency of L and the road curve; 3) calculating the distance between L and the road curve in the matching candidate set, and judging consistency of the distance and the width of a to-be-extracted two-lane road; and 4) when the direction consistency meets a direction setting condition and the distance consistency meets a distance setting condition, indicating that the road curve in the matching candidate set and L are to-be-extracted two-lane road curves. According to the method, attribute information of road elements does not need to be known, the requirement on data quality of the road is low, the two-lane road in a road network can be effectively identified only by knowing coordinate data of the road, and spatial cognition characteristics of human being are met.

Description

technical field [0001] The invention relates to a technology for pattern recognition of double-line roads in large-scale road data, in particular to a method and a device for extracting double-line roads on a map. Background technique [0002] In large-scale maps, the types of urban roads are diversified, and the study of urban road structure characteristics has important theoretical and practical significance for urban structure cognition, automatic synthesis and update of road network, and multi-scale expression. Pattern recognition and extraction of road network is one of the key technologies for spatial information processing in automatic map synthesis. In large-scale road data, urban arterial roads are generally represented by double lines. [0003] At present, many scholars have conducted research on the identification and extraction of two-lane roads. By combining linear road elements with the attribute information of arc and node elements, the two-lane road pattern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/46
CPCG06V20/182G06V10/443
Inventor 武芳行瑞星巩现勇翟仁健李靖涵张浩裴洪星
Owner THE PLA INFORMATION ENG UNIV
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