CN107516341A - Architectural wind environment method for visualizing based on AR - Google Patents
Architectural wind environment method for visualizing based on AR Download PDFInfo
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- CN107516341A CN107516341A CN201710706618.3A CN201710706618A CN107516341A CN 107516341 A CN107516341 A CN 107516341A CN 201710706618 A CN201710706618 A CN 201710706618A CN 107516341 A CN107516341 A CN 107516341A
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/006—Mixed reality
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
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- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F30/20—Design optimisation, verification or simulation
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- G06—COMPUTING; CALCULATING OR COUNTING
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Abstract
The invention discloses the architectural wind environment method for visualizing based on AR, comprise the following steps：1) reconstruction of the scanning recognition and threedimensional model of building；2) model data and CFD open source softwares link and environmental simulation；3) analog result visual feedback.The present invention can not only show the space geometry information of real building thing, virtual wind environment simultaneous display can be come out simultaneously, two kinds of information are complementary to one another, are superimposed, in the augmented reality of visualization, user can utilize the display device such as tablet personal computer or Hololens glasses, by real building thing with computer graphic is multiple is synthesized together, just it can be seen that place wind environment is around it.
Description
Technical field
The present invention relates to AR application field, more particularly to a kind of architectural wind environment method for visualizing based on AR.
Background technology
The arrival of digital times has started the deep layer discussion to construction style meaning." performance-based building " is this topic
Provide new visual angle, it is proposed that the transformation of " forms choice " in building --- Form Follows performance (Form Follows
Performance).Majority research and practice have shown that, design the decision-making of initial stage have to the building performance in future it is extremely heavy
The influence wanted.In this stage, the parameter such as wind speed, wind direction and Form of Architecture, opening, direction is included into design consideration, developed
Comfortable moist heat is built in passive type wind environment layout strategy, the natural flowing that can effectively utilize wind.
However, wind environment is not easy to control because of its invisibility and complexity for architect.Although as section
The development of technology, people can be carried out by traditional wind tunnel experiment and computational fluid dynamics (CFD) simulation to wind environment
Assess, but carrying out these simulations needs relatively professional stock of knowledge, complicated simulation setting and substantial amounts of time and wealth
Power, these limitations cause simulation to architectural wind environment in construction industry only less than 1% popularity rate, are usually used in landmark building
Simulation.Moreover, these simulations typically occur in the design middle and later periods, in the situation that building geometric shape and layout have determined substantially
Under, the checking of " rear evaluation " formula is carried out by professional person, it can be that the feedback that design cycle is brought is usually relatively limited.And
Initial stage is designed, in the stage that conceptual scheme germinates rapidly, really is able to lack it for the Fast simulation instrument used in architect
It is very few.
Augmented reality (Augmented Reality, AR) is a kind of by real world information and virtual world information
" seamless " integrated new technology, it is difficult the entity information experienced in the certain time spatial dimension of real world script to be
(visual information etc.), by science and technology such as computers, it is superimposed again after analog simulation, by virtual Information application to real world,
Perceived by human sensory, so as to reach the sensory experience of exceeding reality.Real environment and virtual object are superimposed in real time
Exist simultaneously to same picture or space.
The content of the invention
To solve problem present in above-mentioned background technology, it is an object of the invention to provide the architectural wind environment based on AR
Method for visualizing, to reach the space geometry information that can not only show real building thing, while can be same by virtual wind environment
Step shows, the purpose that two kinds of information is complementary to one another, is superimposed.
To reach above-mentioned purpose, technical scheme is as follows：
Architectural wind environment method for visualizing based on AR, comprises the following steps：
1) reconstruction of the scanning recognition and threedimensional model of building, based on multiposition multi-cam and depth camera on desktop
Head carries out entity building scanning identification, obtains the shape parameter of building, the direction of relative rotation angle and relative position
Information, scanning information handles by daemon software, and reconstruction obtains corresponding building mathematical model；
Can real-time synchronization offer colour and depth to 3D printing building three-dimensional reconstruction, Kinect v2 based on Kinect v2
Image；
2) model data and CFD open source softwares link and environmental simulation, program development is carried out based on OpenFOAM, it is wrapped
Model data is included to be automatically imported, self-defined boundary condition, add turbulence model, establish solver；CFD analogue datas need
Developing Data Transformation layer in Unity3d engines, CFD data is imported engine, simulate fluid effect, intermediate layer can parse
CFD analogue data results, change into engine and use data；
Effect is developed by the visualization function in Unity3d and completed, and by Particles Moving, sprite calculating renders,
The gradient of particle in fluid is realized, divergence, the motion simulation of curl, field wire simulation, essence finally is accomplished to turbulent flow viscous force effect
Really simulation；
3) analog result visual feedback, solved by iteratively faster, its result can be respectively displayed on desktop level display screen
On upper and vertical thin-film display screen.
Preferably, the precision of building mathematical model is 1-10 centimetres in the step 1).
Preferably, it is the building weight based on more mesh photos and depth map identification object dimensional to be rebuild in the step 1)
Build, artificial optimization is carried out to the topological sum texturing of model of place, as the pre-treatment step for entering engine.
Preferably, RGBD camera three-dimensional reconstruction steps are also included in the step 1), it is as follows：A, camera Attitude estimation；b、
Texture mapping；C, the description of RGBD features is proposed.
Preferably, it is horizontal plane result on desktop level display screen in the step 3), is vertical profile on vertical thin-film display screen
Face.
Pass through above-mentioned technical proposal, the architectural wind environment method for visualizing provided by the invention based on AR, can not only be opened up
The space geometry information of existing real building thing, while virtual wind environment simultaneous display can be come out, two kinds of information are complementary to one another,
Superposition, in the augmented reality of visualization, user can utilize the display device such as tablet personal computer or Hololens glasses, will be true
Building with computer graphic is multiple is synthesized together, just it can be seen that place wind environment is around it.Meanwhile its also have it is following
Advantage：Sightless wind environment can be visualized, describe the movement locus of building ambient wind, qualitatively provide letter for designer
Breath makes the direction of designs clearer and more definite to assess layout strategy；The wind environments such as wind speed, blast correlation can quantitatively be handled
Data, and in AR softwares by intuitively, be easy to understand diagram in a manner of present；Operating process is relatively easy, manually replaces
After changing BUILDINGS MODELS (size change) or changing the operation such as modal position, angle, quickly identify and generate new threedimensional model number
According to, it is automatic to carry out backstage CFD simulation calculating, and fast feedback result is easy in design initial stage to one to AR imaging devices
The rapid evaluation of serial scheme.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described.
Fig. 1 is Kinect v2 of the present invention to precision and the relation of distance；
Fig. 2 is the flow chart of RGBD cameras three-dimensional reconstruction step of the present invention；
Fig. 3 is the images match figure of RGBD cameras three-dimensional reconstruction step of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes.
Architectural wind environment method for visualizing provided by the invention based on AR, as Figure 1-3, comprises the following steps：
1) reconstruction of the scanning recognition and threedimensional model of building, based on multiposition multi-cam and depth camera on desktop
Head carries out entity building scanning identification, obtains the shape parameter of building, the direction of relative rotation angle and relative position
Information, scanning information handles by daemon software, and reconstruction obtains corresponding building mathematical model, and its precision is 1-10 lis
Rice；
Can real-time synchronization offer colour and depth to 3D printing building three-dimensional reconstruction, Kinect v2 based on Kinect v2
Image；Identification object dimensional, which is rebuild, to be rebuild based on the building of more mesh photos and depth map, to the topological sum of model of place
Texturing carries out artificial optimization, as the pre-treatment step for entering engine；
RGBD camera three-dimensional reconstruction steps are as follows：A, camera Attitude estimation；B, texture mapping；C, propose that RGBD features are retouched
State；Due to the discrete sampling of spatial point cloud, the strategy based on point cloud registering can cause registration error in ICP frameworks, based on straight line,
The registration of the features such as plane can improve registration accuracy, increase straight line, plane characteristic to optimize used in equation when present frame with
Whole model can effectively reduce deviation accumulation in the projection registration strategies of previous frame position；RGBD based on straight line, plane characteristic
Image registration algorithm is as follows：
2) model data and CFD open source softwares link and environmental simulation, program development is carried out based on OpenFOAM, it is wrapped
Model data is included to be automatically imported, self-defined boundary condition, add turbulence model, establish solver；CFD analogue datas need
Developing Data Transformation layer in Unity3d engines, CFD data is imported engine, simulate fluid effect, intermediate layer can parse
CFD analogue data results, change into engine and use data；
Effect is developed by the visualization function in Unity3d and completed, and by Particles Moving, sprite calculating renders,
The gradient of particle in fluid is realized, divergence, the motion simulation of curl, field wire simulation, essence finally is accomplished to turbulent flow viscous force effect
Really simulation；
3) analog result visual feedback, solved by iteratively faster, its result can be respectively displayed on desktop level display screen
On upper and vertical thin-film display screen, it is horizontal plane result on desktop level display screen, is vertical section on vertical thin-film display screen.
The simulation of architectural wind environment, interaction flow are to identify that building identifies by camera, carry out template matches, are loaded into
3D reconstruction models, and associated fluid analog result, are settled accounts and are simulated, when user's movable building mark, flow field and other effects meeting
Change in real time；The technology of AR identifications is by the feature point detection realization of image, the SHIFT recognition methods based on reinforcing, Binary
The strong robust features point detections of Robust Independent Elementary Features, main difference are optimizing detection,
Make that 8 to 12 frames can be reached on mobile phone, discrimination is not less than 92%.
Architectural wind environment method for visualizing disclosed by the invention based on AR, it can not only show the space of real building thing
Geological information, while virtual wind environment simultaneous display can be come out, two kinds of information are complementary to one another, are superimposed, in the increasing of visualization
In strong reality, user can utilize the display device such as tablet personal computer or Hololens glasses, by real building thing and computer graphic
It is multiple to be synthesized together, just it can be seen that place wind environment is around it.Meanwhile it also has the advantage that：Can not
The wind environment visualization seen, describe the movement locus of building ambient wind, qualitatively provide information for designer to assess design
Strategy, make the direction of designs clearer and more definite；The wind environment related data such as wind speed, blast can be quantitatively handled, and it is soft in AR
Presented by intuitively, in a manner of the diagram that is easy to understand in part；Operating process is relatively easy, manually replaces BUILDINGS MODELS (chi
Very little change) or after changing modal position, the operation such as angle, quickly identify and generate new three-dimensional modeling data, it is automatic carry out after
Platform CFD simulations calculate, and fast feedback result is easy in design initial stage to a series of the quick of schemes to AR imaging devices
Assess.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (5)
1. the architectural wind environment method for visualizing based on AR, it is characterised in that comprise the following steps：
1) reconstruction of the scanning recognition and threedimensional model of building, entered based on multiposition multi-cam and depth camera on desktop
Row entity building scanning identifies, obtains the letter of the shape parameter of building, the direction of relative rotation angle and relative position
Breath, scanning information are handled by daemon software, and reconstruction obtains corresponding building mathematical model；
Can the colored figure with depth of real-time synchronization offer to 3D printing building three-dimensional reconstruction, Kinect v2 based on Kinect v2
Picture；
2) model data and CFD open source softwares link and environmental simulation, program development is carried out based on OpenFOAM, it includes mould
Type data are automatically imported, self-defined boundary condition, are added turbulence model, established solver；CFD analogue datas need
Developing Data Transformation layer in Unity3d engines, CFD data is imported engine, simulate fluid effect, intermediate layer can parse
CFD analogue data results, change into engine and use data；
Effect is developed by the visualization function in Unity3d and completed, and by Particles Moving, sprite calculating renders, and is realized
The gradient of particle in fluid, divergence, the motion simulation of curl, field wire simulation, accurate mould finally is accomplished to turbulent flow viscous force effect
Intend；
3) analog result visual feedback, solved by iteratively faster, its result can be respectively displayed on desktop level display screen with
On vertical thin-film display screen.
2. the architectural wind environment method for visualizing according to claim 1 based on AR, it is characterised in that in the step 1)
The precision for building mathematical model is 1-10 centimetres.
3. the architectural wind environment method for visualizing according to claim 1 based on AR, it is characterised in that in the step 1)
Identification object dimensional, which is rebuild, to be rebuild based on the building of more mesh photos and depth map, to the topological sum texturing of model of place
Artificial optimization is carried out, as the pre-treatment step for entering engine.
4. the architectural wind environment method for visualizing according to claim 3 based on AR, it is characterised in that in the step 1)
Also include RGBD camera three-dimensional reconstruction steps, it is as follows：A, camera Attitude estimation；B, texture mapping；C, the description of RGBD features is proposed.
5. the architectural wind environment method for visualizing according to claim 1 based on AR, it is characterised in that in the step 3)
It is horizontal plane result on desktop level display screen, is vertical section on vertical thin-film display screen.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110782527A (en) * | 2019-10-09 | 2020-02-11 | 北京建筑大学 | Building modeling method and device |
| CN114333477A (en) * | 2021-12-28 | 2022-04-12 | 南京财经大学 | Virtual simulation teaching training system based on AR technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110782527A (en) * | 2019-10-09 | 2020-02-11 | 北京建筑大学 | Building modeling method and device |
| CN110782527B (en) * | 2019-10-09 | 2023-11-21 | 北京建筑大学 | Building modeling method and device |
| CN114333477A (en) * | 2021-12-28 | 2022-04-12 | 南京财经大学 | Virtual simulation teaching training system based on AR technology |
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