CN106952337A - A kind of three-dimensional input output method of city streetscape - Google Patents

Abstract

The present invention relates to a kind of three-dimensional input output method of city streetscape, comprise the following steps：Step S1：Three dimensional point cloud is gathered using three-dimensional laser scanner, and noise reduction registration process is carried out to the three dimensional point cloud, the point cloud file of standard is obtained；Step S2：The three-dimensional laser scanner is connected with a PC, and the three dimensional point cloud in a cloud file is imported and is designed in Autodesk Revit softwares, BIM models are set up；Step S3：The PC is connected with a 3D printer and a VR emulators, and the 3 d measurement data in BIM models and contextual data are exported, and prints mock-up and carries out VR emulation.The present invention improves the measurement quality of city streetscape, time saving and energy saving.

Description

A kind of three-dimensional input output method of city streetscape

Technical field

The present invention relates to three dimensional design field, more particularly to a kind of three-dimensional input output method of city streetscape.

Background technology

In the past, in municipal administration or architectural design, in-site measurement typically with instruments such as tape measure, rangefinders, was wasted time and energy, and And the survey tool accuracy used is not high, measurement result is influenceed.

The content of the invention

In view of this, it is an object of the invention to provide a kind of three-dimensional input output method of city streetscape, measurement matter is improved Amount.

The present invention is realized using following scheme：A kind of three-dimensional input output method of city streetscape, comprises the following steps：

Step S1：Three dimensional point cloud is gathered using three-dimensional laser scanner, and the three dimensional point cloud is dropped Make an uproar registration process to improve precision, obtain the point cloud file of standard；

Step S2：The three-dimensional laser scanner is connected with a PC, and the three dimensional point cloud in a cloud file is imported It is designed in Autodesk Revit softwares, sets up BIM models；

Step S3：The PC is connected with a 3D printer and a VR emulators, by the three-dimensional measurement number in BIM models Exported according to contextual data, print mock-up and carry out VR emulation.

In the step S1, the three-dimensional laser scanner is combined into the three dimensional point cloud collection that two different survey stations are obtained P, Q, pi (x, y, z) ∈ P, qi (X, Y, Z) ∈ Q), wherein pi, qi are that space of the same point under different coordinates is sat in P, Q Mark, i.e. same place pair, carry out with it is punctual by the two points converge same place in conjunction (pi, qi) is carried out same rigid body translation (R, T), using spacial similarity transformation formula：

Wherein, T is translation matrix, and R is spin matrix.

Especially, in order to improve precision, more than 3 public domain characteristic points (datum mark) can be chosen and matched, so Use neighbouring iterative method further registering afterwards.

Further, three-dimensional data can be output to after the BIM models designed on 3D printer, generates natural pattern Type, facilitates the discussion and checking of carry out scheme, and output data should be noted that model topology face should be closed；Three dimensions designed in addition According to that can be output in VR emulators, using immersion VR glasses, the effect of practice of construction is checked, or carry out different schemes Contrast on effect, can more truly simulate than traditional design sketch mode and build up rear effect, and can find and correct not in time Rationally.

Compared with prior art, the method that the present invention is used obtains the three-dimensional point cloud number at scene using three-dimensional laser scanner According to the processing software preliminary treatment carried by equipment is then introduced into Autodesk REVIT and set into the point cloud file of standard Count in software, directly to measuring length, volume etc. on a cloud so in BIM design softwares, while the precision phase of measurement After data acquisition accurate to traditional approach and once complete, can repeatedly it measure as needed, it is not necessary to repeatedly to scene Measurement, has saved manpower, has improved efficiency.This method is carrying out concrete application in BIM design objects, should during scanning Notice that the angle of surface to be scanned and scanner is avoided too greatly, to improve scanning reflection rate, scan data precision can be improved and had Effect.

Brief description of the drawings

Fig. 1 is method of the present invention schematic flow sheet.

Embodiment

Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.

The present embodiment provides a kind of city streetscape three-dimensional input output method, as shown in figure 1, comprising the following steps：

Step S1：Three dimensional point cloud is gathered using three-dimensional laser scanner, and the three dimensional point cloud is dropped Make an uproar registration process to improve precision, obtain the point cloud file of standard；

Step S2：The three-dimensional laser scanner is connected with a PC, and the three dimensional point cloud in a cloud file is imported It is designed in Autodesk Revit softwares, sets up BIM models；

Step S3：The PC is connected with a 3D printer and a VR emulators, by the three-dimensional measurement number in BIM models Exported according to contextual data, print mock-up and carry out VR emulation.

In the step S1, the three-dimensional laser scanner is combined into the three dimensional point cloud collection that two different survey stations are obtained P, Q, pi (x, y, z) ∈ P, qi (X, Y, Z) ∈ Q), wherein pi, qi are that space of the same point under different coordinates is sat in P, Q Mark, i.e. same place pair, carry out with it is punctual by the two points converge same place in conjunction (pi, qi) is carried out same rigid body translation (R, T), using spacial similarity transformation formula：

Wherein, T is translation matrix, and R is spin matrix.

In the present embodiment, in order to improve precision, more than 3 public domain characteristic points (datum mark) progress can be chosen Match somebody with somebody, it is then further registering using neighbouring iterative method.

In the present embodiment, three-dimensional data can be output to after the BIM models designed on 3D printer, generation is in kind Model, facilitates the discussion and checking of carry out scheme, and output data should be noted that model topology face should be closed；The three-dimensional designed in addition Data can be output in VR emulators, using immersion VR glasses, check the effect of practice of construction, or carry out not Tongfang Case Contrast on effect, can more truly simulate than traditional design sketch mode and build up rear effect, and can find and correct in time It is unreasonable.

In the present embodiment, the method for use obtains the three dimensional point cloud at scene using three-dimensional laser scanner, passes through The processing software preliminary treatment that equipment is carried is then introduced into Autodesk REVIT design softwares into the point cloud file of standard In, directly to measuring length, volume etc. on a cloud so in BIM design softwares, while the precision of measurement is relatively conventional Mode is accurate, and after once complete data acquisition, can repeatedly measure as needed, it is not necessary to repeatedly to in-site measurement, Manpower has been saved, efficiency is improved.This method is carrying out concrete application in BIM design objects, should be noted that during scanning Surface to be scanned and the angle of scanner are avoided too greatly, to improve scanning reflection rate, can improve scan data precision and effective.

The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with Modification, should all belong to the covering scope of the present invention.

Claims (2)

1. a kind of three-dimensional input output method of city streetscape, it is characterised in that：Comprise the following steps：

Step S1：Three dimensional point cloud is gathered using three-dimensional laser scanner, and noise reduction is carried out to the three dimensional point cloud and is matched somebody with somebody Quasi- processing, obtains the point cloud file of standard；

Step S2：The three-dimensional laser scanner is connected with a PC, and the three dimensional point cloud in a cloud file is imported It is designed in Autodesk Revit softwares, sets up BIM models；

Step S3：The PC is connected with a 3D printer and a VR emulators, by the 3 d measurement data in BIM models with Contextual data is exported, and is printed mock-up and is carried out VR emulation.

2. the three-dimensional input output method of a kind of city streetscape according to claim 1, it is characterised in that：The step S1 In, the three-dimensional laser scanner is combined into P, Q in the three dimensional point cloud collection that two different survey stations are obtained, pi (x, y, z) ∈ P, Qi (X, Y, Z) ∈ Q), wherein pi, qi are space coordinate of the same point under different coordinates, i.e. same place pair in P, Q, are entered The two points are converged same place in conjunction and carry out same rigid body translation (R, T) to (pi, qi) by row with punctual, are become using space is similar Change formula：

$\left\{\begin{array}{cccc}X\left(0\right)& X\left(1\right)& ...& X\left(n\right)\\ Y\left(0\right)& Y\left(1\right)& ...& Y\left(n\right)\\ Z\left(0\right)& Z\left(1\right)& ...& Z\left(n\right)\end{array}\right\}=R\left\{\begin{array}{cccc}x\left(0\right)& x\left(1\right)& ...& x\left(n\right)\\ y\left(0\right)& y\left(1\right)& ...& y\left(n\right)\\ z\left(0\right)& z\left(1\right)& ...& z\left(n\right)\end{array}\right\}+T$

Wherein, T is translation matrix, and R is spin matrix.