CN109990703A - A kind of size detecting method and system of prefabricated components - Google Patents
A kind of size detecting method and system of prefabricated components Download PDFInfo
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- CN109990703A CN109990703A CN201910205749.2A CN201910205749A CN109990703A CN 109990703 A CN109990703 A CN 109990703A CN 201910205749 A CN201910205749 A CN 201910205749A CN 109990703 A CN109990703 A CN 109990703A
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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
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Abstract
The invention discloses a kind of size detecting methods of prefabricated components, comprising the following steps: acquires the image data of prefabricated components；The point cloud model of prefabricated components is generated based on image data；The design size model of prefabricated components is obtained, and design size model is registrated with the point cloud model, obtains dimension analysis report.It is also proposed that a kind of size detecting system of prefabricated components, comprising: data acquisition module, for acquiring the image data of prefabricated components；Point cloud model generation module, for generating the point cloud model of the prefabricated components according to image data；Data analysis module is registrated for obtaining the design size model of prefabricated components, and by the design size model with the point cloud model, obtains dimension analysis report.The assessment of prefabricated components dimensional accuracy can be not only fast implemented, but also measurement cost is greatly reduced.
Description
Technical field
The present invention relates to engineering measurement fields, are the size detecting method and system of a kind of prefabricated components specifically.
Background technique
The quality of prefabricated components has strong influence to the quality and safety of monolithic architecture object.In order to guarantee prefabricated components
The quality of production, it is particularly important that check and evaluation is carried out to the quality of prefabricated components.Currently formd in terms of prefabricated components inspection
National standard " Standard for quality inspection and asswssment of precast concrete members " GBJ321-90 and provincial standard " precast concrete matter
Measure test stone " DB11/T 968-2013.Mainly test to template, reinforcing bar, concrete, component and structural behaviour, wherein
Prefabricated components size and surface quality detection are crucial detection project.
But the quality testing of existing prefabricated components is mainly to complete by manually, using dipstick metering, bracing wire, guiding ruler,
The modes such as theodolite, level measure, in-site measurement inefficiency, and work is easy to happen careless mistake, it is difficult to meet building industrialization
Demand.In recent years, three-dimensional laser scanning technique has obtained certain application in prefabricated components context of detection, large area, high-precision,
Non-contacting data acquisition modes compensate for the deficiency of traditional detection means to a certain extent.But when the scanning of 3 D laser scanning
Between it is longer, and scanner can be blocked by sight and be influenced, and need to change station splicing, and field surveys time-consuming is more, adds its price
It is high, it is difficult to comprehensively universal.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of size detecting method of prefabricated components and systems, to improve
The detection efficiency of the size of prefabricated components.
The technical scheme to solve the above technical problems is that
A kind of size detecting method of prefabricated components, comprising the following steps:
Acquire the image data of prefabricated components；
The point cloud model of the prefabricated components is generated based on the image data；
The design size model of the prefabricated components is obtained, and the design size model and the point cloud model are carried out
Registration obtains dimension analysis report.
The beneficial effects of the present invention are: by the image data for obtaining the prefabricated components, and according to the image data
The point cloud model of the prefabricated components is obtained, and will be compared and analyzed by prefabricated components point cloud model and design size model.
The assessment that prefabricated components dimensional accuracy not only may be implemented can effectively solve existing assembled architecture prefabricated components size detection
The inefficiency technical problem completed by manually, greatly improves the efficiency of in-site measurement, reduces the work of survey crew
It measures, and can only substantially reduce the cost of measuring instrument by the acquisition that acquisition image data carries out point cloud model.
Based on the above technical solution, the present invention can also be improved as follows.
Further, it is described acquisition prefabricated components image data, include: before
Target is set on the prefabricated components.
Beneficial effect using above-mentioned further scheme is: acquiring by the way that the target is arranged, and in default shooting point
The image data of the prefabricated components enables the collected image data to obtain by image modeling technique complete
Threedimensional model.
Further, the point cloud model that the prefabricated components are generated based on the image data, is specifically included:
Obtain the size of the target；
The image data of size and the prefabricated components based on the target generates the point cloud model.
Beneficial effect using above-mentioned further scheme is: the size by obtaining the target, and the point cloud model will
The size of the target generates the point cloud model as constraint condition.So that the point cloud model size generated is accurate.
Further, the design size model for obtaining the prefabricated components, and by the design size model and institute
It states point cloud model to be registrated, obtains dimension analysis report, specifically include:
Obtain the coordinate information of the target；
Obtain the design size model of the prefabricated components, and based on the coordinate information by the design size model with
The point cloud model is registrated, and the dimension analysis report is obtained.
Beneficial effect using above-mentioned further scheme is: the coordinate information by obtaining the target, for being used as institute
State the control point of prefabricated components point cloud model with the design size model being registrated so that the design size model with it is described
Point cloud model accurate can obtain comparative analysis.
Further, the point cloud model that the prefabricated components are generated based on the image data, later further include:
Advanced treating is carried out to the point cloud model.
Beneficial effect using above-mentioned further scheme is: by carrying out advanced treating, including drop to the point cloud model
It makes an uproar, optimize, so that the point cloud model obtained is more accurate.
Meanwhile the present invention also proposes a kind of size detecting system of prefabricated components, comprising:
Data acquisition module, for acquiring the image data of prefabricated components；
Point cloud model generation module, for generating the point cloud model of the prefabricated components according to the image data；
Data analysis module, for obtaining the design size model of the prefabricated components, and by the design size model
It is registrated with the point cloud model, obtains dimension analysis report.
Further, the data acquisition module includes target, and the target is set on the prefabricated components.
Further, the data acquisition module includes size acquisition unit, and the size acquisition unit is for obtaining institute
The size of target is stated, and the size of the target is sent to the point cloud model generation module.
Further, the data acquisition module includes coordinate acquisition unit, and the coordinate acquisition unit is for acquiring institute
The coordinate information of target is stated, and the coordinate information is sent to the data analysis module.
Further, the point cloud model point cloud model generation module further includes advanced treatment unit, the advanced treating
Module is used to carry out advanced treating to the point cloud model.
The beneficial effects of the present invention are: the image data of the prefabricated components is obtained by the data acquisition module, institute
State the point cloud model that point cloud model generation module obtains the prefabricated components according to the image data, the data analysis module
It will be compared and analyzed by the point cloud model of prefabricated components and design size model.Prefabricated components dimensional accuracy not only may be implemented
Assessment, can effectively solve the inefficiency technology that existing assembled architecture prefabricated components size detection is completed by manually
Problem greatly improves the efficiency of in-site measurement, reduces the workload of survey crew, and only by acquisition image data into
The acquisition of row point cloud model can substantially reduce the cost of measuring instrument.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the size detecting method of prefabricated components of the present invention；
Fig. 2 is a kind of structure chart of the size detecting system of prefabricated components of the present invention.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in Figure 1, a kind of size detecting method of prefabricated components, comprising the following steps:
Acquire the image data of prefabricated components；
The point cloud model of the prefabricated components is generated based on the image data；
The design size model of the prefabricated components is obtained, and the design size model and the point cloud model are carried out
Registration obtains dimension analysis report.
It should be noted that photogrammetric principle is exactly to utilize two or multiple cameras from different location to same mesh
Mark is shot, by intersection measurement principle, i.e., the ray of the optical center of camera and its corresponding image points composition when different location is shot
Meet at the same space object point, it may be determined that the three-dimensional position of object point.
Therefore, the image data for acquiring prefabricated components is obtained in different location, multiple with certain degree of overlapping are pre-
The image data of component processed is to extract and match multiple shadows based on the point cloud model that the image data generates the prefabricated components
As identical characteristic point between data, the spatial position of prefabricated components surface each point is obtained by the measurement method of three-dimensional intersection, from
And construct the point cloud model of prefabricated components surface texture and shape.
Specifically, it is described acquisition prefabricated components image data, include: before
Target is set on the prefabricated components.
It should be noted that target is arranged on the prefabricated components, and the capture setting shadow of the prefabricated components of target
Multiple described prefabricated structures with certain degree of overlapping are acquired in default shooting point as data, and according to photogrammetric principle
The image data of part.
Specifically, the point cloud model that the prefabricated components are generated based on the image data, is specifically included:
Obtain the size of the target；
The image data of size and the prefabricated components based on the target generates the point cloud model.
It should be noted that by the size for obtaining the target, and by the size as the point cloud model
Dimension constraint enables the point cloud model generated to have true dimension information.
Specifically, the design size model for obtaining the prefabricated components, and by the design size model with it is described
Point cloud model is registrated, and is obtained dimension analysis report, is specifically included:
Obtain the coordinate information of the target；
Obtain the design size model of the prefabricated components, and based on the coordinate information by the design size model with
The point cloud model is registrated, and the dimension analysis report is obtained.
It should be noted that obtain the coordinate information of the target, be using the coordinate of the target as public control point,
So that the design size model is registrated with the point cloud model with the public control point, to obtain the dimension analysis
Report.The threedimensional model of the prefabricated components can directly be obtained by Cloud Server by obtaining the design size model, can also
Then to generate threedimensional model by 3 d modeling software by the design size for obtaining the prefabricated components.In addition, the ruler
Very little analysis report is the analysis report of the design size of the actual size of the prefabricated components and the prefabricated components, according to described
Dimension analysis report and the permitted dimensional discrepancy requirement of related specifications, make assessment to the dimensional accuracy of prefabricated components.
Optionally, the point cloud model that the prefabricated components are generated based on the image data, later further include:
Advanced treating is carried out to the point cloud model.
It should be noted that the advanced treating includes the data processing of denoising, optimization, coordinate conversion etc., so that obtaining
Point cloud model it is more accurate.
As shown in Fig. 2, the present invention also proposes a kind of size detecting system of prefabricated components, comprising:
Data acquisition module, for acquiring the image data of prefabricated components；
Point cloud model generation module, for generating the point cloud model of the prefabricated components according to the image data；
Data analysis module, for obtaining the design size model of the prefabricated components, and by the design size model
It is registrated with the point cloud model, obtains dimension analysis report.
Specifically, the data acquisition module includes target, and the target is set on the prefabricated components.
Specifically, the data acquisition module includes size acquisition unit, and the size acquisition unit is described for obtaining
The size of target, and the size of the target is sent to the point cloud model generation module.
Specifically, the data acquisition module includes coordinate acquisition unit, and the coordinate acquisition unit is described for acquiring
The coordinate information of target, and the coordinate information is sent to the data analysis module.
Optionally, the point cloud model point cloud model generation module further includes advanced treatment unit, the advanced treating mould
Block is used to carry out advanced treating to the point cloud model.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of size detecting method of prefabricated components, which comprises the following steps:
Acquire the image data of prefabricated components；
The point cloud model of the prefabricated components is generated based on the image data；
The design size model of the prefabricated components is obtained, and the design size model is matched with the point cloud model
Standard obtains dimension analysis report.
2. the size detecting method of prefabricated components according to claim 1, which is characterized in that the acquisition prefabricated components
Image data includes: before
Target is set on the prefabricated components.
3. the size detecting method of prefabricated components according to claim 2, which is characterized in that described to be based on the image number
According to the point cloud model for generating the prefabricated components, specifically include:
Obtain the size of the target；
The image data of size and the prefabricated components based on the target generates the point cloud model.
4. the size detecting method of prefabricated components according to claim 2 or 3, which is characterized in that the acquisition is described pre-
The design size model of component processed, and the design size model is registrated with the point cloud model, obtain dimension analysis
Report, specifically includes:
Obtain the coordinate information of the target；
Obtain the design size model of the prefabricated components, and based on the coordinate information by the design size model with it is described
Point cloud model is registrated, and the dimension analysis report is obtained.
5. the size detecting method of prefabricated components according to claim 1, which is characterized in that described to be based on the image number
According to the point cloud model for generating the prefabricated components, later further include:
Advanced treating is carried out to the point cloud model.
6. a kind of size detecting system of prefabricated components characterized by comprising
Data acquisition module, for acquiring the image data of prefabricated components；
Point cloud model generation module, for generating the point cloud model of the prefabricated components according to the image data；
Data analysis module, for obtaining the design size model of the prefabricated components, and by the design size model and institute
It states point cloud model to be registrated, obtains dimension analysis report.
7. the size detecting system of prefabricated components according to claim 6, which is characterized in that the data acquisition module packet
Target is included, the target is set on the prefabricated components.
8. the size detecting system of prefabricated components according to claim 7, which is characterized in that the data acquisition module packet
Size acquisition unit is included, the size acquisition unit is used to obtain the size of the target, and the size of the target is sent
To the point cloud model generation module.
9. the size detecting system of prefabricated components according to claim 7 or 8, which is characterized in that the data acquisition module
Block includes coordinate acquisition unit, and the coordinate acquisition unit is used to acquire the coordinate information of the target, and the coordinate is believed
Breath is sent to the data analysis module.
10. the size detecting system of prefabricated components according to claim 1, which is characterized in that the point cloud model point cloud
Model generation module further includes advanced treatment unit, and the advanced treating module is used to carry out depth to the point cloud model
Reason.
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| CN114235028A (en) * | 2022-01-24 | 2022-03-25 | 上海市建筑科学研究院有限公司 | Method for detecting disturbance of same-layer instant grouting component caused by subsequent construction |
| CN114279324A (en) * | 2021-12-10 | 2022-04-05 | 苏交科集团股份有限公司 | All-dimensional intelligent detection method for appearance quality of prefabricated part |
| CN115183673A (en) * | 2022-07-07 | 2022-10-14 | 湖南联智科技股份有限公司 | Box girder end structure size detection method |
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Application publication date: 20190709 |