CN112699430A - Method and device for detecting remote video and drawing models - Google Patents
Method and device for detecting remote video and drawing models Download PDFInfo
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- CN112699430A CN112699430A CN202110005063.6A CN202110005063A CN112699430A CN 112699430 A CN112699430 A CN 112699430A CN 202110005063 A CN202110005063 A CN 202110005063A CN 112699430 A CN112699430 A CN 112699430A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/12—Geometric CAD characterised by design entry means specially adapted for CAD, e.g. graphical user interfaces [GUI] specially adapted for CAD
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- 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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Abstract
The embodiment of the application provides a method and a device for detecting remote video and drawing models, and relates to the technical field of image processing. The method comprises the steps of obtaining a site image of construction operation and a corresponding drawing model; acquiring at least any three coordinate points of the field image and corresponding point positions on the drawing model, wherein the three coordinate points are not on the same straight line; establishing a mapping relation between the coordinate points and the point positions; and measuring the drawing model and the site image according to the mapping relation to obtain a measurement result, establishing the mapping relation between the site image and the corresponding drawing model, and solving the problems that the construction site cannot carry out measurement and the design drawing needs manual review, so that the efficiency is low and errors are easy to occur in the conventional method.
Description
Technical Field
The application relates to the technical field of image processing, in particular to a method and a device for detecting remote video and drawing models.
Background
When the measurement is carried out on a construction site, due to the shielding of various construction equipment, measurement personnel at the positions of some measured objects are difficult to reach and cannot carry out the measurement; the requirement of the design drawing on the professional degree is very high, it is very difficult for general personnel to find a measured object on the design drawing, and when the measurement result is manually rechecked, the efficiency is low and mistakes are very easy to make.
Disclosure of Invention
The embodiment of the application aims to provide a method and a device for detecting remote videos and drawing models, wherein a mapping relation between a field image and a corresponding drawing model is established, the field can be measured through the remote videos, meanwhile, the measurement operation is mapped to the corresponding drawing model for automatic comparison, manual rechecking and measurement on a construction site are not needed, and the problems that in the existing method, the measurement cannot be carried out on the construction site, and the efficiency is low and errors easily occur due to the fact that manual rechecking is needed for designing drawings are solved.
The embodiment of the application provides a method for detecting remote video and drawing models, which comprises the following steps:
acquiring a site image of construction operation and a corresponding drawing model, wherein the drawing model comprises a two-dimensional CAD model and a three-dimensional BIM model;
acquiring at least any three coordinate points of the field image and corresponding point positions on the drawing model, wherein the three coordinate points are not on the same straight line;
establishing a mapping relation between the coordinate points and the corresponding point positions;
and when the measurement operation is carried out on the drawing model or the site image according to the mapping relation, the other one synchronously maps the measurement operation so as to compare the site image with the drawing model.
In the implementation process, the field image and the corresponding drawing model can be compared with each other by establishing a mapping relation between the field image and the corresponding drawing model, so that the effect of rechecking the drawing model is achieved, the drawing model can also be used for obtaining corresponding coordinates in the field image, the field can be measured through remote video, meanwhile, the measurement operation is mapped to the corresponding drawing model for automatic comparison, otherwise, the field image and the drawing model can be compared with each other, the mutual inspection between the field image and the drawing model can be realized through comparison, the purpose of rechecking is achieved, and the problem that manual measurement is carried out on a construction site is avoided, so that the problems that the efficiency is low and mistakes are easily caused due to the fact that the construction site cannot carry out measurement and the drawing needs manual rechecking in design in the conventional method are solved.
Further, the establishing a mapping relationship between the coordinate points and the point locations includes:
acquiring a coordinate system conversion matrix of the point location from a drawing model coordinate system to a field image coordinate system;
and acquiring a coordinate point corresponding to any point position on the field image according to the coordinate system conversion matrix.
In the implementation process, the coordinate point corresponding to any point position on the field image can be obtained by calculating the coordinate system conversion matrix, so that the corresponding relation between any position in the drawing model and the field image is obtained.
Further, the obtaining of the coordinate system transformation matrix of the point location from the drawing model coordinate system to the field image coordinate system includes:
if the first, second, and third coordinate points in the drawing model coordinate system and the corresponding first, second, and third coordinate points in the field image coordinate system are known, the mapping relationship may be expressed as:
wherein, the coordinates of the first point location, the second point location and the third point location are respectively: a. the1(xa1,ya1,0)，B1(xb1,yb1,0)，C1(xc1,yc10); the coordinates of the first coordinate point, the second coordinate point and the third coordinate point are respectively as follows: a. the2(xa2,ya2,za2)，B2(xb2,yb2,zb2)，C2(xc2,yc2,zc2) (ii) a R represents the rotation matrix and T represents the translation matrix;
the translation matrix can be represented as:
if it is
The rotation matrix can be represented as:
in the implementation process, the rotation matrix and the translation matrix which are converted between the point position coordinate in the known drawing model coordinate system and the corresponding coordinate point in the field image coordinate system can be obtained, namely the mapping relation between the rotation matrix and the translation matrix is obtained.
Further, the obtaining a coordinate point of any point location on the live image according to the coordinate system transformation matrix includes:
acquiring a coordinate point corresponding to any point position in the drawing model in the field image according to the rotation matrix and the translation matrix;
the coordinate points are represented as:
Y＝X*R+T；
wherein X represents any point position in the drawing model; y represents the corresponding coordinate point of X in the live image.
In the implementation process, the mapping relation is established, the coordinate point corresponding to any point position in the drawing model in the field image can be obtained, and the corresponding coordinate point can be obtained according to any point position in the drawing model through the mapping relation without manually rechecking the drawing model and measuring the drawing model on a construction site.
Further, when the measurement operation is performed on the drawing model or the site image according to the mapping relationship, the other one of the two synchronous mapping operations performs the measurement operation to compare the site image with the drawing model, including:
according to the established mapping relation between the drawing model and the field image, when measurement operation is carried out on the field image, the measurement operation is mapped to the corresponding drawing model for synchronous display;
and when the measurement operation is carried out on the drawing model, mapping the measurement operation to the corresponding site image for synchronous display.
In the implementation process, by establishing a mapping relation, measurement identification, measurement results and the like generated by measurement on a site image are synchronously mapped and displayed on a corresponding drawing model, otherwise, by the method, the drawing model and the site image are combined, and meanwhile, the measurement on a construction site and the rechecking of the drawing model are realized.
The embodiment of the present application further provides a remote video and drawing model detection device, the device includes:
the system comprises an acquisition module, a storage module and a display module, wherein the acquisition module is used for acquiring a site image of construction operation and a corresponding drawing model, and the drawing model comprises a two-dimensional CAD model and a three-dimensional BIM model;
the coordinate acquisition module is used for acquiring at least any three coordinate points of the field image and corresponding point positions on the drawing model, wherein the three coordinate points are not on the same straight line;
the mapping establishing module is used for establishing the mapping relation between the coordinate points and the point positions;
and the result acquisition module is used for carrying out measurement operation on the drawing model and the field image according to the mapping relation so as to acquire a measurement result.
In the implementation process, the mapping relation between the drawing model and the site image is established, the point position of the drawing model and the coordinate point of the site image can be associated, mutual comparison and measurement of the point position and the coordinate point of the site image are achieved, and the problems that in the existing method, the measurement cannot be carried out on a construction site, and manual review is needed for designing the drawing, so that the efficiency is low and mistakes are easy to occur are solved.
Further, the mapping establishing module comprises:
the conversion matrix acquisition module is used for acquiring a coordinate system conversion matrix of the point location from a drawing model coordinate system to a field image coordinate system;
and the coordinate point calculation module is used for acquiring a corresponding coordinate point of any point position on the field image according to the coordinate system conversion matrix.
In the implementation process, the coordinate system conversion matrix is obtained, so that the point location can be converted from the drawing model coordinate system to the coordinate point of the field image coordinate system, and the conversion of the mapping relation is realized.
Further, the coordinate system transformation matrix includes a rotation matrix and a translation matrix, and the transformation matrix obtaining module includes:
if the first, second, and third coordinate points in the drawing model coordinate system and the corresponding first, second, and third coordinate points in the field image coordinate system are known, the mapping relationship may be expressed as:
wherein, the coordinates of the first point location, the second point location and the third point location are respectively: a. the1(xa1,ya1,0)，B1(xb1,yb1,0)，C1(xc1,yc10); the coordinates of the first coordinate point, the second coordinate point and the third coordinate point are respectively as follows: a. the2(xa2,ya2,za2)，B2(xb2,yb2,zb2)，C2(xc2,yc2,zc2) (ii) a R represents the rotation matrix and T represents the translation matrix;
the translation matrix can be represented as:
if it is
The rotation matrix can be represented as:
in the implementation process, a rotation matrix and a translation matrix which are converted between the first point position, the second point position and the third point position in a known drawing model coordinate system and the first coordinate point, the second coordinate point and the third coordinate point in a field image coordinate system are obtained, so that a mapping relation is established according to the rotation matrix and the translation matrix.
An embodiment of the present application further provides an electronic device, where the electronic device includes a memory and a processor, where the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute any one of the above-mentioned remote video and drawing model detection methods.
An embodiment of the present application further provides a readable storage medium, where computer program instructions are stored, and when the computer program instructions are read and executed by a processor, the method for detecting a remote video and drawing model is performed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a flow chart of a remote video and drawing model detection method provided in an embodiment of the present application;
fig. 2 is a flowchart of mapping relationship establishment provided in the embodiment of the present application;
FIG. 3 is a schematic diagram of a software interface provided by an embodiment of the present application;
fig. 4 is a block diagram of a remote video and drawing model detection apparatus according to an embodiment of the present disclosure;
fig. 5 is a specific structural block diagram of a remote video and drawing model detection apparatus according to an embodiment of the present application.
Icon:
100-an acquisition module; 200-a coordinate acquisition module; 300-a mapping establishment module; 301-a transformation matrix acquisition module; 302-coordinate point calculation module; 400-result obtaining module.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1, fig. 1 is a flowchart of a remote video and drawing model detection method according to an embodiment of the present application. In the method, a remote video can be acquired through a front-end device such as an image acquisition device to acquire a scene image of a construction site, namely a site image (construction working face image), which may be a two-dimensional image or a three-dimensional image, without limitation, and then a corresponding drawing model such as a CAD design drawing, namely a two-dimensional CAD model or a three-dimensional BIM model (Building Information Modeling) is acquired, and a two-dimensional or three-dimensional model acquired through other drawing software is also acquired without limitation, and the site image or the drawing model image is stored in software corresponding to the method for measurement operation, and the specific processing steps are as follows:
step S100: acquiring a site image of construction operation and a corresponding drawing model;
step S200: acquiring at least any three coordinate points of the field image and corresponding point positions on the drawing model, wherein the three coordinate points are not on the same straight line;
when the mapping relation is established, at least three coordinate points are required to be selected, and a plane is determined by the three coordinate points which are not on the same straight line, so that the accuracy of the established mapping relation can be ensured.
Step S300: establishing a mapping relation between the coordinate points and the point positions;
as shown in fig. 2, a flowchart is established for the mapping relationship, and the step may specifically include:
step S301: acquiring a coordinate system conversion matrix of the point location from a drawing model coordinate system to a field image coordinate system;
the coordinate system transformation matrix comprises a rotation matrix and a translation matrix, namely the transformation is carried out to solve the rotation matrix and the translation matrix:
if the drawing model coordinate system O is known1First point location a in1Second point location B1And a third point C1And a corresponding field image coordinate system O2First coordinate point a in (1)2A second coordinate point B2And a third coordinate point C2Then the mapping relationship can be expressed as:
wherein, the coordinates of the first point location, the second point location and the third point location are respectively: a. the1(xa1,ya1,0)，B1(xb1,yb1,0)，C1(xc1,yc10); the coordinates of the first coordinate point, the second coordinate point and the third coordinate point are respectively as follows: a. the2(xa2,ya2,za2)，B2(xb2,yb2,zb2)，C2(xc2,yc2,zc2) (ii) a R represents the rotation matrix and T represents the translation matrix;
the translation matrix can be represented as:
if it is
The rotation matrix can be represented as:
wherein the content of the first and second substances,
is composed of
The pseudo-inverse matrix of (2).
Step S302: and acquiring a coordinate point corresponding to any point position on the field image according to the coordinate system conversion matrix.
After the rotation matrix and the translation matrix are obtained, according to the rotation matrix and the translation matrix, a coordinate point corresponding to any point position in the drawing model in the field image can be obtained;
the mapping relationship between any point location on the drawing model and the corresponding coordinate point on the live image can be expressed as:
Y＝X*R+T；
wherein X represents any point position in the drawing model; y represents the corresponding coordinate point of X in the live image.
In the drawing model, whether the mapping relationship is established between the two-dimensional image or the three-dimensional image and the field image can be realized by the above formula, which is not described herein again.
Step S400: and when the measurement operation is carried out on the drawing model or the site image according to the mapping relation, the other one synchronously maps the measurement operation so as to compare the site image with the drawing model.
Establishing a mapping relationship includes two cases:
according to the established mapping relation between the drawing model and the field image, when measurement operation is carried out on the field image, the measurement operation is mapped to the corresponding drawing model for synchronous display;
and when the measurement operation is carried out on the drawing model, mapping the measurement operation to the corresponding site image for synchronous display.
In the implementation process, as shown in fig. 3, for example, as a schematic diagram of a software interface, video image data of a construction site is remotely acquired, a site image is selected from the video image data, the site image and a corresponding CAD design drawing or BIM model are input into the interface and displayed, for example, an upper position in the diagram is displayed as a site image of construction, and a lower position in the diagram is displayed as a corresponding CAD drawing, when the site image, i.e., a construction work plane, is measured, the measurement operation includes measurement marks, measurement traces, measurement processes, measurement results, and the like, for example, the position of a certain device, such as the distance between an a point and a B point in the diagram (a measured value of 7.098 m and a design value of 7.100 m is given), is correspondingly displayed at a corresponding position on the corresponding CAD design drawing or BIM model according to the mapping relationship, and a corresponding mapping distance and mapping point and coordinate values (X, B, c, y and Z values), comparing the measurement operation displayed on the corresponding CAD design drawing or BIM model with the measurement operation on the site image to realize the mutual verification of the site image and the drawing model without manually carrying out measurement and rechecking operation on the CAD design drawing; on the contrary, when the measurement operation is carried out on the CAD design drawing or the BIM model, the corresponding measurement operation can be carried out on the corresponding field image, thereby avoiding the problem of manual measurement when the user goes to the field.
Example 2
The embodiment of the present application provides a remote video and drawing model detection apparatus, which is applied to the remote video and drawing model detection method in embodiment 1, and as shown in fig. 4, is a structural block diagram of the remote video and drawing model detection apparatus, and the apparatus includes:
the system comprises an acquisition module 100, a storage module and a display module, wherein the acquisition module is used for acquiring a site image of construction operation and a corresponding drawing model, and the drawing model comprises a two-dimensional CAD model and a three-dimensional BIM model;
a coordinate obtaining module 200, configured to obtain at least any three coordinate points of the field image and corresponding point locations on the drawing model, where the three coordinate points are not on the same straight line;
a mapping establishing module 300, configured to establish a mapping relationship between the coordinate points and the corresponding point locations;
a result obtaining module 400, configured to, when performing a measurement operation on the drawing model or the site image according to the mapping relationship, map the measurement operation synchronously with the other one of the drawing model and the site image, so as to compare the site image with the drawing model.
And during measurement, according to the established mapping relation, mapping the corresponding measurement operation on the corresponding drawing model or the site image when the measurement operation is performed on the site image or the drawing model.
As shown in fig. 5, for a specific structural block diagram of the remote video and drawing model detection apparatus, the mapping establishing module 300 includes:
a transformation matrix obtaining module 301, configured to obtain a coordinate system transformation matrix of the point location from a drawing model coordinate system to a field image coordinate system;
the coordinate system transformation matrix comprises a rotation matrix and a translation matrix, and the specific calculation process is as follows:
if the first, second, and third coordinate points in the drawing model coordinate system and the corresponding first, second, and third coordinate points in the field image coordinate system are known, the mapping relationship may be expressed as:
wherein, the coordinates of the first point location, the second point location and the third point location are respectively: a. the1(xa1,ya1,0)，B1(xb1,yb1,0)，C1(xc1,yc10); the coordinates of the first coordinate point, the second coordinate point and the third coordinate point are respectively as follows: a. the2(xa2,ya2,za2)，B2(xb2,yb2,zb2)，C2(xc2,yc2,zc2) (ii) a R represents the rotation matrix and T represents the translation matrix;
the translation matrix can be represented as:
if it is
The rotation matrix can be represented as:
a coordinate point calculating module 302, configured to obtain, according to the coordinate system transformation matrix, a coordinate point corresponding to any point location on the field image.
Acquiring a coordinate point corresponding to any point position in the drawing model in the field image according to the rotation matrix and the translation matrix;
the coordinate points are represented as:
Y＝X*R+T；
wherein X represents any point position in the drawing model; y represents the corresponding coordinate point of X in the live image.
In the implementation process, the drawing model and the field image are combined for comparison by establishing a mapping relationship between the drawing model and the field image, specifically, measurement marks, measurement results and the like generated by measurement on the field image corresponding to the working face can be automatically and correspondingly displayed on the CAD design drawing or the BIM model without manually performing measurement and review operations on the CAD design drawing or the BIM model, otherwise, the measurement operations on the CAD design drawing or the BIM model can also be automatically performed on the field image without manually performing measurement operations on the construction field to establish the mapping relationship between the BIM model and the field image, and the functions can also be realized without repeated description.
An embodiment of the present application further provides an electronic device, where the electronic device includes a memory and a processor, the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the remote video and drawing model detection method described in embodiment 1.
An embodiment of the present application further provides a readable storage medium, where computer program instructions are stored, and when the computer program instructions are read and executed by a processor, the method for detecting remote video and drawing models in embodiment 1 is executed.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A method for detecting remote video and drawing models is characterized by comprising the following steps:
acquiring a site image of construction operation and a corresponding drawing model, wherein the drawing model comprises a two-dimensional CAD model and a three-dimensional BIM model;
acquiring at least any three coordinate points of the field image and corresponding point positions on the drawing model, wherein the three coordinate points are not on the same straight line;
establishing a mapping relation between the coordinate points and the corresponding point positions;
and when the measurement operation is carried out on the drawing model or the site image according to the mapping relation, the other one synchronously maps the measurement operation so as to compare the site image with the drawing model.
2. The method for remote video and drawing model detection as claimed in claim 1, wherein said establishing a mapping relationship between said coordinate points and said point locations comprises:
acquiring a coordinate system conversion matrix of the point location from a drawing model coordinate system to a field image coordinate system;
and acquiring a coordinate point corresponding to any point position on the field image according to the coordinate system conversion matrix.
3. The remote video and drawing model detection method of claim 2, wherein the coordinate system transformation matrix comprises a rotation matrix and a translation matrix, and the obtaining of the coordinate system transformation matrix of the point location from the drawing model coordinate system to the live image coordinate system comprises:
if the first, second, and third coordinate points in the drawing model coordinate system and the corresponding first, second, and third coordinate points in the field image coordinate system are known, the mapping relationship may be expressed as:
wherein, the coordinates of the first point location, the second point location and the third point location are respectively: a. the1(xa1,ya1,0)，B1(xb1,yb1,0)，C1(xc1,yc10); the coordinates of the first coordinate point, the second coordinate point and the third coordinate point are respectively as follows: a. the2(xa2,ya2,za2)，B2(xb2,yb2,zb2)，C2(xc2,yc2,zc2) (ii) a R represents the rotation matrix and T represents the translation matrix;
the translation matrix can be represented as:
if it is
The rotation matrix can be represented as:
4. the method according to claim 3, wherein the obtaining a coordinate point of any point on the live image according to the coordinate system transformation matrix comprises:
acquiring a coordinate point corresponding to any point position in the drawing model in the field image according to the rotation matrix and the translation matrix;
the coordinate points are represented as:
Y＝X*R+T；
wherein X represents any point position in the drawing model; y represents the corresponding coordinate point of X in the live image.
5. The method for remote video and drawing model inspection as set forth in claim 1, wherein said performing a measurement operation on the drawing model and the live image according to the mapping relationship to obtain a measurement result comprises:
according to the established mapping relation between the drawing model and the field image, when measurement operation is carried out on the field image, the measurement operation is mapped to the corresponding drawing model for synchronous display;
and when the measurement operation is carried out on the drawing model, mapping the measurement operation to the corresponding site image for synchronous display.
6. A remote video and drawing model detection apparatus, the apparatus comprising:
the system comprises an acquisition module, a storage module and a display module, wherein the acquisition module is used for acquiring a site image of construction operation and a corresponding drawing model, and the drawing model comprises a two-dimensional CAD model and a three-dimensional BIM model;
the coordinate acquisition module is used for acquiring at least any three coordinate points of the field image and corresponding point positions on the drawing model, wherein the three coordinate points are not on the same straight line;
the mapping establishing module is used for establishing the mapping relation between the coordinate points and the corresponding point positions;
and the result acquisition module is used for synchronously mapping the measurement operation when the measurement operation is performed on the drawing model or the site image according to the mapping relation so as to compare the site image with the drawing model.
7. The remote video and drawing model detection device of claim 6, wherein the mapping module comprises:
the conversion matrix acquisition module is used for acquiring a coordinate system conversion matrix of the point location from a drawing model coordinate system to a field image coordinate system;
and the coordinate point calculation module is used for acquiring a corresponding coordinate point of any point position on the field image according to the coordinate system conversion matrix.
8. The remote video and drawing model inspection device of claim 7, wherein the coordinate system transformation matrix comprises a rotation matrix and a translation matrix, and the transformation matrix acquisition module comprises:
if the first, second, and third coordinate points in the drawing model coordinate system and the corresponding first, second, and third coordinate points in the field image coordinate system are known, the mapping relationship may be expressed as:
wherein the first pointThe coordinates of the bit, the second point location and the third point location are respectively: a. the1(xa1,ya1,0)，B1(xb1,yb1,0)，C1(xc1,yc10); the coordinates of the first coordinate point, the second coordinate point and the third coordinate point are respectively as follows: a. the2(xa2,ya2,za2)，B2(xb2,yb2,zb2)，C2(xc2,yc2,zc2) (ii) a R represents the rotation matrix and T represents the translation matrix;
the translation matrix can be represented as:
if it is
The rotation matrix can be represented as:
9. an electronic device, comprising a memory for storing a computer program and a processor for executing the computer program to cause the electronic device to perform the remote video and drawing model detection method according to any one of claims 1 to 5.
10. A readable storage medium having stored thereon computer program instructions which, when read and executed by a processor, perform the remote video and drawing model detection method of any of claims 1 to 5.
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| Publication number | Priority date | Publication date | Assignee | Title |
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