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Method and device for generating three-dimensional crossing road model

A road model and road technology, applied in 3D modeling, image data processing, instruments, etc., can solve problems such as large amount of data, complexity, and modeling that cannot be processed well

Inactive Publication Date: 2016-08-31
BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing 3D road automatic modeling based on lofting cannot handle well the modeling when more than 3 roads intersect
In general, to deal with the intersection of more than 3 roads, each road is modeled separately, and then there is a blank at the intersection of the roads, and the roads are connected by manually drawing points in the blank. The work is very tedious and complicated, and the amount of data is large, and the cost of manual modeling is high

Method used

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  • Method and device for generating three-dimensional crossing road model
  • Method and device for generating three-dimensional crossing road model
  • Method and device for generating three-dimensional crossing road model

Examples

Experimental program
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Embodiment 1

[0040] Figure 1a A flow chart of a method for generating a three-dimensional intersection road model provided in Embodiment 1 of the present invention. The method can be executed by a device for generating a three-dimensional intersection road model. The device can be implemented by hardware and / or software. The method includes :

[0041] S110: Acquire the road pipeline, and determine the boundary line of the road pipeline.

[0042] Exemplarily, obtaining the road pipeline and determining the boundary line of the road pipeline includes: drawing the centerline of the road according to the acquired street view data, forming a road pipeline according to the road type, the width data of the road and the centerline, and determining the road The boundary line of the pipeline. Specifically, the centerline of the road pipeline is used as a path, and the section straight line formed by the width of the road is scanned along the centerline path to form the road pipeline. When there i...

Embodiment 2

[0058] Figure 2a It is a flowchart of a method for generating a three-dimensional intersection road model provided by Embodiment 2 of the present invention. On the basis of Embodiment 1 above, the spline curve formed according to the sampling points of the boundary line is interpolated to obtain an interpolation point set Preferably, the method includes: using a sampling point on two intersecting boundary lines as the start point and end point of the spline curve, using the intersection point as a control point to form a spline curve, and performing interpolation through the spline curve to obtain an interpolation point set.

[0059] Based on the above optimization, such as Figure 2a As shown, the technical solution provided by this embodiment is specifically as follows:

[0060] S210: Acquire the road pipeline, and determine the boundary line of the road pipeline.

[0061] In this embodiment, a Y-shaped intersection road is taken as an example for illustration, as Figur...

Embodiment 3

[0076] Figure 3a It is a flow chart of a method for generating a three-dimensional intersection road model provided by Embodiment 3 of the present invention. On the basis of Embodiment 1 above, interpolation is performed according to the spline curve formed by the sampling points of the boundary line, and the optimal interpolation point set is obtained. Including: taking the sampling points farthest from the intersection point on the two intersecting boundary lines as the starting point and end point of the spline curve respectively, and taking other sampling points between the farthest sampling point on the boundary line and the intersection point as the sample points The control points of the curve form a spline curve, and interpolation is performed through the spline curve to obtain an interpolation point set.

[0077] Based on the above optimization, such as Figure 3a As shown, the technical solution provided by this embodiment is specifically as follows:

[0078] S310...

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Abstract

The invention discloses a method and a device for generating a three-dimensional crossing road model. The method comprises steps that road pipelines are acquired, and border lines of the road pipelines are determined; for adjacent road pipelines, a crossing point of two crossed border lines is determined; at least one sampling point is acquired from each crossed border line is acquired according to the crossing point; interpolation is carried out according to a spline curve formed by the sampling points of the border lines to acquire an interpolation point set; cutting points are acquired according to the sampling points, and the road pipelines among the cutting points are cut; a three-dimensional crossing road surface is formed according to the road pipeline after cutting and the acquired interpolation point set, lofting of the three-dimensional crossing road surface is carried out, and a three-dimensional crossing road model is generated. Through the method, the border lines of the adjacent road pipelines can be smoothly processed, and the data amount and road modeling cost can be reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of road modeling, in particular to a method and device for generating a three-dimensional intersection road model. Background technique [0002] In many application fields, the traditional two-dimensional map has become less and less able to meet the needs, and it has been replaced by a three-dimensional map that can produce a sense of being on the scene. With the upgrading of electronic product hardware, three-dimensional maps have become possible. The 3D map can not only provide all the information required by the 2D map, but more importantly, it can reflect a three-dimensional world, provide users with richer and more intuitive visual effects, and make people feel immersive. [0003] A 3D map includes multiple levels of information such as terrain, roads, buildings, and landscapes, among which 3D roads are the most important part of a 3D map, and road intersections are an important ...

Claims

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Application Information

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IPC IPC(8): G06T17/00
CPCG06T17/00
Inventor 孙晔阳慧蓉张静
Owner BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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