CN109978948A - Distance measuring method based on vision - Google Patents
Distance measuring method based on vision Download PDFInfo
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- CN109978948A CN109978948A CN201910227040.2A CN201910227040A CN109978948A CN 109978948 A CN109978948 A CN 109978948A CN 201910227040 A CN201910227040 A CN 201910227040A CN 109978948 A CN109978948 A CN 109978948A
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- imaging space
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- measurement method
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000004438 eyesight Effects 0.000 title abstract description 4
- 238000005259 measurement Methods 0.000 claims abstract description 8
- 230000000007 visual effect Effects 0.000 claims abstract description 5
- 238000003384 imaging method Methods 0.000 claims description 43
- 238000000691 measurement method Methods 0.000 claims description 22
- 238000012800 visualization Methods 0.000 claims description 8
- 238000010295 mobile communication Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 3
- 238000009430 construction management Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/022—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of tv-camera scanning
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Computer Graphics (AREA)
- Geometry (AREA)
- Software Systems (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a distance measuring method based on vision in the field of engineering measurement, which is used for measuring the distance between any two points in a real scene space in a non-contact manner and comprises the following steps; a shooting step: selecting a live-action space, and taking a picture of the live-action space at N different visual angles through the mobile intelligent terminal; a sending step: selecting N pictures and uploading the N pictures to a three-dimensional reconstruction unit, wherein N is less than or equal to N; a reconstruction step: the three-dimensional reconstruction unit carries out three-dimensional reconstruction according to the pictures uploaded in the sending step to obtain a three-dimensional model of the real scene space, and a scale factor between the three-dimensional model and the real scene space is determined; a measurement step: and displaying the three-dimensional model on a mobile intelligent terminal, and measuring the distance between any two points in the real scene space in the three-dimensional model according to the scale factor.
Description
Technical field
The present invention relates to a kind of distance measurement methods of view-based access control model of engineering construction field.
Background technique
For in power grid construction construction between equipment for the research of safe distance, between especially two charging equipments
Safe distance, studies less both at home and abroad at present, and the measuring technique for being based particularly on vision does not have substantially.Although for comparative maturity
Laser measuring technique for it is very mature, but due to its expensive cost, also only apply now in some special necks
Domain uses, and the construction of electricity power engineering is simultaneously not included.In electricity power engineering construction, safe distance between equipment, especially two
The measurement of safe distance can not be avoided between charging equipment.Such as during item construction management, establishment is specifically set
Need to consider the safe distance between charging equipment when meter change scheme, large scale equipment lifting, equipment pressure test scheme, due to
Equipment live can not carry out the measurement of live contact, therefore the non-cpntact measurement of safe distance between two charging equipments
Technology is current urgent problem.
Summary of the invention
The purpose of the invention is to overcome the deficiencies of the prior art and provide a kind of distance measurement method of view-based access control model,
It is efficiently quick, easy to operate, saves human cost, raises labour productivity.
Realizing a kind of technical solution of above-mentioned purpose is: a kind of distance measurement method of view-based access control model is used for non-contact survey
Measure the distance in Imaging space between any two points, including the following steps:
It shoots step: selecting an Imaging space, respectively shooting one at N number of different visual angle by mobile intelligent terminal should
The photo of Imaging space；
Sending step: n therein photo uploads are chosen and give 3 D stereo reconfiguration unit, n≤N；
Reconstruct step: 3 D stereo reconfiguration unit carries out 3 D stereo reconstruct according to the photo uploaded in sending step, obtains
To the three-dimensional stereo model of the Imaging space, the scale factor between the three-dimensional stereo model and the Imaging space is determined；
Measuring process: the three-dimensional stereo model is shown on mobile intelligent terminal, and according to the scale factor, in institute
State the distance measured in the Imaging space between any two points in three-dimensional stereo model.
Further, it shoots in step, places Measure Board in the Imaging space, thus in being obtained in reconstruct step
The three-dimensional stereo model for setting Measure Board, according to size of the Measure Board in the three-dimensional stereo model and the Imaging space
Than determining the size factor between the three-dimensional stereo model and the Imaging space.
Further, reconstruct step is to carry out on long-range server, and the three-dimensional stereo model is stored in institute
It states on server.
Further, in sending step, the photo is that the server is passed to by mobile communications network.
Further, the mobile intelligent terminal is the mobile intelligent terminal using Android system, and the server is
Using the server of linux system.
Further, step, sending step and measuring process are shot by being built in the mobile intelligent terminal
APP is carried out；
Step is shot to carry out by the camera calling module of the APP；
Sending step chooses n photos by the photograph album calling module of the APP, and is sent by the photo of the APP
Selected photo is sent to the server by module.
Further, the visualization model that the APP is first passed through in measuring process visualizes the 3 D stereo
Model, then by the meshlab module of the APP, in the three-dimensional stereo model, choose any two in the Imaging space
Point obtains the distance in the Imaging space between any two points according to the scale factor.
Described in can also further, in measuring process being visualized by the visualization model of the APP, 360 degree
Three-dimensional stereo model.
Further, a photo can be once chosen in sending step is successively uploaded to the server, or primary choosing
It takes n photos while being uploaded to the server.
Further, the distance in the Imaging space between any two points is between two charging equipments in the Imaging space
Distance.
Using a kind of technical solution of the distance measurement method of view-based access control model of the invention, it to be used for non-cpntact measurement outdoor scene
Distance in space between any two points, includes the following steps；It shoots step: selecting an Imaging space, pass through intelligent movable end
End respectively shoots the photo of the Imaging space at N number of different visual angle；Sending step: choose n therein photo uploads to
3 D stereo reconfiguration unit, n≤N；Reconstruct step: 3 D stereo reconfiguration unit carries out three according to the photo uploaded in sending step
Tie up stereo reconstruction, obtain the three-dimensional stereo model of the Imaging space, determine the three-dimensional stereo model and the Imaging space it
Between scale factor；Measuring process: showing the three-dimensional stereo model on mobile intelligent terminal, and according to the scale because
Son measures the distance in the Imaging space between any two points in the three-dimensional stereo model.Its technical effect is that:
First, the distance between charging equipment efficiently can be effectively measured, optimizing design scheme is convenient for, implements enlarging work
Journey.
The second, construction management quality and safety can be improved: reduction is done over again；When equipment hoisting, pressure resistance, reduction, which is accompanied, to be stopped setting
It is standby；More importantly ensure to install, the safety of pressure resistance.
Third, save the cost:, can be by the measurement of live view-based access control model using mobile intelligent terminal by special APP
The distance of any two points in Imaging space, timeliness is strong, about human cost, raises labour productivity.
Detailed description of the invention
Fig. 1 is system architecture diagram used by a kind of distance measurement method of view-based access control model of the invention.
Fig. 2 is the schematic diagram of Measure Board used by a kind of distance measurement method of view-based access control model of the invention.
Fig. 3 is a kind of flow chart of the distance measurement method of view-based access control model of the invention.
Specific embodiment
Referring to Fig. 1, the present inventor in order to preferably understand technical solution of the present invention, is led to below
Specifically embodiment is crossed, and will be described in detail with reference to the accompanying drawings:
A kind of distance measurement method of view-based access control model of the invention is carried out by mobile intelligent terminal 1 and server 2, is moved
Dedicated APP built in dynamic intelligent terminal 1.The APP includes: beginning interface module 11 with LOGO, camera calling module 12, phase
Volume calling module 13, photo sending module 14, visualization model 15 and meshlab module 16.
3 D stereo reconfiguration unit 21 is housed on server 2.3 D stereo reconfiguration unit 21 is according to MVS (Multi-
View Stereo, more stereoscopic visions) 3 D stereo reconfiguration unit 21.
The photo sending module 14 and visualization model 15 of the APP of mobile intelligent terminal 1, the 3 D stereo with server 2
It is communicated between reconfiguration unit 21 by mobile network.The mobile network can be 4G network or Socket communication network.
Mobile intelligent terminal 1 is using the mobile intelligent terminal 1 of Android system, such as smart phone or tablet computer.Clothes
Device 2 be engaged in as using the server 2 of linux system.
Embodiment:
A kind of distance measurement method of view-based access control model of the invention, including the following steps:
Shooting step: opening APP on mobile intelligent terminal 1, choose an Imaging space, is called by the camera of APP
Module 12 opens the camera of mobile intelligent terminal 1, each to shoot from N number of different visual angle using the camera of mobile intelligent terminal 1
The photo of one Imaging space amounts to the photo of the N Imaging spaces, is stored in the photograph album of mobile intelligent terminal 1,
The quantity of N is the integer more than or equal to three.
When shooting the photo of the Imaging space, Measure Board 3 is placed in the Imaging space, is decorated on Measure Board 3
Grid.
Sending step: it is chosen wherein by the photograph album calling module 13 of the APP into the photograph album of mobile intelligent terminal 1
N photos long-range server 2 is uploaded to by the photo sending module 14 and mobile communications network of the APP.Wherein n
For less than or equal to N but greatly be equal to three integer.
When photograph album calling module 13 chooses photo, a photo both can be once chosen, the photo of the APP is passed sequentially through
Sending module 14 and mobile communications network are uploaded to server 2, also once choose n photos, are sent by the photo of the APP
Module 14 and mobile communications network, while being uploaded to server 2.After the completion of photo upload, the photo sending module 14 of the APP
Give server 2 confirmation signal.
Reconstruct step: the 3 D stereo reconfiguration unit 21 on server 2 opens photos using the n uploaded in sending step, into
The 3 D stereo reconstruct of the row Imaging space, obtains the three-dimensional stereo model of the Imaging space.On in sending step
There is Measure Board in the photo of biography, therefore also built-in Measure Board in the three-dimensional stereo model constructed in reconstruct step.Cause
This can be according to grid on Measure Board in the size of grid and the three-dimensional stereo model on Measure Board in the Imaging space
Size determines the scale factor between the three-dimensional stereo model and the Imaging space, also referred to as proportionality coefficient.
Such as: the length a of grid is 25cm on Measure Board 3 in the Imaging space, and width b is also 25cm, then described
In three-dimensional stereo model on Measure Board grid length be 5mm, width is also 5mm, then the three-dimensional stereo model with it is described
Scale factor between Imaging space is 1/50.
Measuring process: the communication of mobile intelligent terminal 1 and the progress mobile network of server 2, the visualization model of the APP
15, by the mobile network communication with server 2, obtain the three-dimensional stereo model, and visualize the 3 D stereo mould
Type.
Again by the meshlab module 16 of the APP, the three-dimensional stereo model is controlled in the visualization mould of the APP
Display on block 15, for example the three-dimensional stereo model and the rotation to 360 degree of three-dimensional stereo model progress are scaled, thus
In the three-dimensional stereo model, corresponding any two points in the Imaging space are chosen, meshlab module 16 is according to the ruler
The factor is spent, the distance of point-to-point transmission in the Imaging space is obtained.
A kind of distance measurement method of view-based access control model of the invention is easy to operate, can be surveyed with the distance of real-time perfoming electrical body
Amount, can be not only used for the construction operation process of substation, can be also used for similar job engineering, such as real estate construction field
Scape, the built-in finishing in house etc..A kind of distance measurement method of view-based access control model of the invention further enhances the peace of substation
Quan Xing can be used for telemetering, meet the developing direction of wisdom power plant, China.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as the change in spirit of the invention, to embodiment described above
Change, modification will all be fallen within the scope of claims of the present invention.
Claims (10)
1. a kind of distance measurement method of view-based access control model, for the distance between any two points in non-cpntact measurement Imaging space, packet
Include the following steps:
It shoots step: selecting an Imaging space, the outdoor scene is respectively shot at N number of different visual angle by mobile intelligent terminal
The photo in space；
Sending step: n therein photo uploads are chosen and give 3 D stereo reconfiguration unit, n≤N；
Reconstruct step: 3 D stereo reconfiguration unit carries out 3 D stereo reconstruct according to the photo uploaded in sending step, is somebody's turn to do
The three-dimensional stereo model of Imaging space determines the scale factor between the three-dimensional stereo model and the Imaging space；
Measuring process: the three-dimensional stereo model is shown on mobile intelligent terminal, and according to the scale factor, described three
The distance in the Imaging space between any two points is measured in dimension three-dimensional model.
2. a kind of distance measurement method of view-based access control model according to claim 2, it is characterised in that: the shooting step
In, Measure Board is placed in the Imaging space, so that the three-dimensional stereo model of built-in Measure Board is obtained in reconstruct step, according to
According to size ratio of the Measure Board in the three-dimensional stereo model and the Imaging space, determine the three-dimensional stereo model with
Size factor between the Imaging space.
3. a kind of distance measurement method of view-based access control model according to claim 1, it is characterised in that:
Reconstructing step is to carry out on long-range server, and the three-dimensional stereo model is stored on the server.
4. a kind of distance measurement method of view-based access control model according to claim 3, it is characterised in that: in sending step, institute
Stating photo is that the server is passed to by mobile communications network.
5. a kind of distance measurement method of view-based access control model according to claim 3, it is characterised in that: the intelligent movable is whole
End is, using the mobile intelligent terminal of Android system, the server is the server using linux system.
6. a kind of distance measurement method of view-based access control model according to claim 3, it is characterised in that: shooting step is sent
Step and measuring process are carried out by being built in the APP of the mobile intelligent terminal；
Step is shot to carry out by the camera calling module of the APP；
Sending step chooses n photos by the photograph album calling module of the APP, and passes through the photo sending module of the APP
Selected photo is sent to the server.
7. a kind of distance measurement method of view-based access control model according to claim 6, it is characterised in that: first lead in measuring process
The visualization model for crossing the APP, visualizes the three-dimensional stereo model, then by the meshlab module of the APP,
In the three-dimensional stereo model, any two points in the Imaging space are chosen, according to the scale factor, obtain the outdoor scene
Distance in space between any two points.
8. a kind of distance measurement method of view-based access control model according to claim 7, it is characterised in that: it can lead in measuring process
The visualization model of the APP is crossed, 360 degree visualize the three-dimensional stereo model.
9. a kind of distance measurement method of view-based access control model according to claim 3, it is characterised in that: it can one in sending step
One photo of secondary selection is successively uploaded to the server, or the primary n that chooses opens photos while being uploaded to the server.
10. a kind of distance measurement method of view-based access control model according to claim 1, it is characterised in that: the Imaging space
Distance between middle any two points is the distance in the Imaging space between two charging equipments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910227040.2A CN109978948A (en) | 2019-03-25 | 2019-03-25 | Distance measuring method based on vision |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910227040.2A CN109978948A (en) | 2019-03-25 | 2019-03-25 | Distance measuring method based on vision |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288970A (en) * | 2020-02-26 | 2020-06-16 | 国网上海市电力公司 | Portable electrified distance measuring device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032877A (en) * | 2010-11-30 | 2011-04-27 | 东南大学 | Three-dimensional measuring method based on wavelet transformation |
| CN102042807A (en) * | 2010-10-29 | 2011-05-04 | 中国科学技术大学 | Flexible stereoscopic vision measuring unit for target space coordinate |
| CN103900504A (en) * | 2014-04-10 | 2014-07-02 | 华中科技大学 | Nano-scale real-time three-dimensional visual information feedback method |
-
2019
- 2019-03-25 CN CN201910227040.2A patent/CN109978948A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042807A (en) * | 2010-10-29 | 2011-05-04 | 中国科学技术大学 | Flexible stereoscopic vision measuring unit for target space coordinate |
| CN102032877A (en) * | 2010-11-30 | 2011-04-27 | 东南大学 | Three-dimensional measuring method based on wavelet transformation |
| CN103900504A (en) * | 2014-04-10 | 2014-07-02 | 华中科技大学 | Nano-scale real-time three-dimensional visual information feedback method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288970A (en) * | 2020-02-26 | 2020-06-16 | 国网上海市电力公司 | Portable electrified distance measuring device |
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Application publication date: 20190705 |