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A method and device for determining a ground line in a three-dimensional map

A technology for 3D maps and determination methods, which is applied in image data processing, 3D modeling, instruments, etc., can solve the problems of large amount of calculation and low display efficiency of the ground line, achieve simple calculation, high display efficiency, and improve calculation efficiency and show the effect of efficiency

Active Publication Date: 2017-07-04
北京中盈安信技术服务股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The embodiment of the present invention provides a method and device for determining the ground line in a three-dimensional map, which is used to solve the problems in the prior art that the calculation of the ground line in a three-dimensional map requires a large amount of calculation, low display efficiency, and requires pre-vector processing. problem, to achieve the technical effects of simple calculation, high display efficiency, and no need for pre-vector processing

Method used

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  • A method and device for determining a ground line in a three-dimensional map
  • A method and device for determining a ground line in a three-dimensional map
  • A method and device for determining a ground line in a three-dimensional map

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Embodiment 1

[0034] In order to enable those skilled in the art to understand the present invention in more detail, the present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] Such as figure 1 As shown, the embodiment of the present invention provides a method for determining a ground line in a three-dimensional map, the method comprising:

[0036] Step 110: Obtain the corresponding space line of the grounding line, wherein the space line includes a first end point and a second end point;

[0037] Specifically, as figure 2 As shown, the space line in step 110 is specifically AB, wherein the first end point is point A, and the second end point is point B. What is needed in the embodiment of the present invention is to obtain the ground line A1B1 through the space line AB. Among them, A1B1 is the presentation mode of the ground line of the space line AB in the three-dimensional earth model.

[0038] Step 120: Obtain the three-dimensiona...

Embodiment 2

[0065] The embodiment of the present application also provides a device for determining the ground line in a three-dimensional map, such as Figure 5 As shown, the device includes:

[0066] A first obtaining module 10, the first obtaining module 10 is configured to obtain the corresponding space line of the grounding line, wherein the space line includes a first end point and a second end point;

[0067] The second obtaining module 20, the second obtaining module 20 is used to obtain the three-dimensional earth model where the ground-attached line is located, wherein the three-dimensional earth model has a center of the earth;

[0068] A first establishment module 30, the first establishment module 30 is used to establish the first end point, the second end point, and the first plane of the center of the earth;

[0069] A third obtaining module 40, the third obtaining module 40 is configured to obtain a first intersection point between the first plane and the three-dimensiona...

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Abstract

The invention discloses a method and a device for determining a ground line in a 3D map, and belongs to the technical field of processing of 3D maps. The method comprises the steps of acquiring a space line corresponding to the ground line, wherein the space line includes a first end point and a second end point; acquiring a 3D earth model of the ground line, wherein the 3D earth model has an earth core; building first planes for the first end point, the second end point and the earth core; then obtaining a first intersection point between the first plane and the 3D earth model; forming the ground line according to the first intersection point. The method is simple to calculate, high in display efficiency, and free of preliminary vector processing.

Description

technical field [0001] The invention relates to the technical field of three-dimensional map processing, in particular to a method and device for determining a ground line in a three-dimensional map. Background technique [0002] With the continuous development of the three-dimensional map technology field, it has become an important requirement to quickly and efficiently determine the ground line in the three-dimensional map. [0003] Generally speaking, most lines in three dimensions come from vectors, and vectors are generally two-dimensional, that is, there are only plane coordinates and no elevation coordinates. In order to display the vector on the three-dimensional earth in space, it is often necessary to calculate the elevation information of the current vector point. [0004] For a simple point, it is relatively simple to obtain the elevation value of the point on the ground. When it is extended to the line, it is necessary to obtain the elevation information of ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/05
Inventor 白俊波刘荣何文武
Owner 北京中盈安信技术服务股份有限公司
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