Virtual-real fusion complex space structure trace visual positioning and checking method

Abstract

The invention discloses a virtual-real fusion complex space structure trace visual positioning and checking method. The method comprises the following steps: S1, obtaining complex space surface apparent situation data; s2, constructing a virtual space containing the current potential data and the space trace; s3, performing spatial data fusion based on an XR technology in a real space; s4, calculating a deviation value and local adjustment of a verification control point; and S5, constructing and checking based on space trace positioning display. The method has the advantages that on one hand, the problem that complex space traces on a space curved surface cannot be directly, accurately and efficiently positioned in a real space is solved, and the XR technology is adopted, so that the construction process has reference of accurate design information; and on the other hand, the workload of construction paying-off can be omitted, quality control is carried out in the construction process as a basis, and the comprehensive construction efficiency and quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a visual positioning and verification method for a complex spatial structure trace that integrates virtuality and reality. Background Art

[0002] In the rapid development of modern cities, with the continuous innovation of design concepts and the advancement of construction technology, the design and functional requirements of buildings are becoming increasingly diverse and complex. This not only promotes the development of architectural aesthetics, but also puts higher requirements on construction technology. Especially in the construction process of complex and special-shaped structures, how to accurately and quickly locate the structure and control the construction has become a key issue to ensure project quality and construction efficiency.

[0003] Complex special-shaped structures, due to their unique geometric shapes and spatial relationships, pose extremely high requirements and great challenges to the positioning of construction structures. Traditional pre-construction structural positioning methods often use construction layout methods, relying on two-dimensional drawings and measuring tools. Although some complex construction processes have tried BIM three-dimensional tools and measuring robots, the above technical paths all require the establishment of good visibility between the attached surface and the measuring tool, and the layout operation requires manual access and continuous operation to be implemented; and complex special-shaped structures are subject to limited construction conditions (such as scaffolding obstruction for modeling construction, inconvenience in drawing positioning points, and no manual access conditions for objects attached to the layout, etc.), which makes it difficult to adapt to the precise positioning requirements of complex structural elements in three-dimensional space, especially the layout and construction of complex spatial traces on special-shaped spatial surfaces, which has become an obstacle encountered in such spatial modeling construction. Inaccurate spatial trace positioning results often lead to construction rework or repair, which will consume a lot of additional manpower and material resources, and is an important problem that needs to be solved for industry and technological development. Summary of the invention

[0004] The purpose of the present invention is to provide a method for visual positioning and verification of complex spatial structure traces that integrates virtuality and reality based on the deficiencies of the above-mentioned prior art. The method constructs a virtual space in which real data and spatial traces coexist as a medium for connection, and adopts XR technical means to realize on-site accompanying precise expression and construction guidance of spatial traces. That is, the timeliness of the spatial attachment surface data of the spatial traces is ensured by real-scene data collection means, a virtual space in which the current data of the attachment surface and the spatial traces coexist is constructed, and a connection relationship between the virtual space and real key points is established. Finally, accurate matching is achieved through the XR end, which is used for on-site accompanying precise expression of spatial traces to guide construction, and can also be used as a verification tool to continuously check the construction quality during the process.

[0005] The purpose of the present invention is achieved by the following technical solutions: A method for visual positioning and verification of complex spatial structure traces by integrating virtuality and reality, the method comprising the following steps: S1: Obtain the apparent shape data X of the complex space attachment surface in the real space R; S2: construct a virtual space V including the apparent shape data X of the complex space attachment surface and the space trace J, and select m feature points in the apparent shape data X of the complex space attachment surface as control points K m , n connection points T with local line-of-sight operation conditions are established in the virtual space V n ; S3: Use positioning equipment to locate n connection points T n Perform local positioning and layout, and use XR devices to identify n connection points T n To complete the display / projection of the virtual space V in the real space R; S4: Calculate the control point K displayed in the virtual space V m Whether the average offset from the feature point position of the real space R is less than the control accuracy d; if satisfied, proceed to step S5; if not satisfied, repeat back to step S3; S5: Use the spatial trace J displayed by the XR device to construct and verify the complex spatial attachment surface.

[0006] In step S1, the apparent shape current data X of the complex space dependent surface is obtained by using machine vision means including mobile scanners, multi-eye cameras and three-dimensional laser scanners. The apparent shape current data X of the complex space dependent surface includes apparent shape morphology, material texture and color details.

[0007] In step S2, the space trace J is designed, expressed and generated by performing Boolean operations between shapes using three-dimensional design software.

[0008] In step S2, n connection points T n It is not directly arranged on the complex space attachment surface.

[0009] The advantages of the present invention are: on the one hand, it solves the problem that complex spatial traces on spatial surfaces cannot be accurately and efficiently positioned directly in real space (possibly due to limited construction conditions), and the use of XR technology enables the construction process to have a reference to accurate design information; on the other hand, it can save the workload of construction layout (or verify the existing layout results of some conventional scenes) and use it as a basis for quality control during the construction process, thereby improving the overall efficiency and quality of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1It is a flow chart of the visual positioning and verification method of the complex spatial structure trace of virtual-real fusion of the present invention; Figure 2 It is a process schematic diagram of step S3 of the visual positioning and verification method of complex spatial structure traces with virtual-real fusion of the present invention; Figure 3 It is a process schematic diagram of step S3 of the method for visual positioning and verification of complex spatial structure traces that integrates virtuality and reality when the complex space of the present invention is a cylindrical closed space. DETAILED DESCRIPTION

[0011] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art: Example: Figure 1 As shown, this embodiment relates to a visual positioning and verification method for complex spatial structure traces of virtual and real fusion, and the method mainly includes the following steps: S1: Obtaining the apparent potential data of complex spatial surfaces: Obtain the apparent shape potential data X of the complex space attachment surface in the real space R. The apparent shape potential data X of the complex space attachment surface is obtained by using machine vision means including mobile scanners, multi-eye cameras and three-dimensional laser scanners. The apparent shape potential data X of the complex space attachment surface includes the apparent shape form, material texture and color details. The apparent shape potential data X of the complex space attachment surface is used to obtain K in step S2. m In this embodiment, the complex space is a cylindrical closed space.

[0012] S2: Construct a virtual space containing current data and spatial traces: Construct a virtual space V containing the apparent shape potential data X of the complex space attachment surface and the space trace J, and select m feature points in the apparent shape potential data X of the complex space attachment surface as control points K m , establish n connection points T with local line-of-sight operation conditions in the virtual space V n Among them, spatial trace refers to the three-dimensional trajectory curve attached to the surface of complex spatial structure (mostly irregular and difficult to locate three-dimensional curve). In the engineering field, it is generally used for complex spatial modeling design and construction layout guidance during its actual construction process.

[0013] Specifically, a virtual space V is constructed, and the apparent shape potential data X and the space trace J of the complex space attachment surface are imported into the virtual space V. The virtual space V is used as a medium to match the information to be expressed with the "copy" information of the reality, and the space trace J is designed, expressed and generated by performing Boolean operations between shapes through 3D design software; m feature points are selected from the apparent shape potential data X of the complex space attachment surface as control points K m (m>=1), used for the subsequent verification of the scene display deviation based on the connection point; n connection points T with local line-of-sight operation conditions are established in the virtual space V n (n>=1), as the connection point between the real space R and the virtual space V required by the XR technology, due to the limitation of the on-site conditions, only a small number of connection points are arranged, and the connection points may not be directly taken from the complex space attachment surface (the connection points can be directly taken from the complex space attachment surface), which greatly reduces the difficulty and workload of on-site implementation. It is used as the mapping condition for the connection between the real space R and the virtual space V. In this embodiment, one feature point is selected from the apparent shape data X of the complex space attachment surface as the control point, and the control point is K 1 , establish three connection points with local line-of-sight operation conditions in the virtual space V, these three connection points are T 1 , T 2 and T 3 .

[0014] S3: Spatial data fusion based on XR technology in real space: like Figure 2 As shown, the positioning device is used to locate n connection points T n Local positioning and layout, that is, through discrete points and laser leveling equipment, the workload of on-site implementation can be greatly saved, and the XR equipment can be used to identify n connection points T n To complete the display / projection of the virtual space V in the real space R, so as to introduce the results containing the spatial traces into the user's field of vision in the real space R through the XR method. Among them, the XR device is a device that uses XR technology. The XR technology here is Extended Reality, which refers to a series of technologies that combine the real and virtual environments through computer technology and realize human-computer interaction, including virtual reality (VR), augmented reality (AR) and mixed reality (MR) and other forms of interaction, display, and projection technology. The core of XR technology is to create a virtual environment that allows users to interact with this environment. In this embodiment, Figure 3 As shown, the positioning device is used to locate the three connection points T 1 , T 2 and T 3 Perform local positioning and layout, and use XR equipment to identify 3 connection points T 1, T 2 and T 3 To complete the display / projection of the virtual space V in the real space R.

[0015] S4: Calculate the deviation of the calibration control point and make local adjustments: Calculate the control point K displayed in the virtual space V m (In this embodiment, the control point is only K 1 ) is less than the average offset of the feature points in the real space R; if satisfied, proceed to step S5; if not satisfied, repeat back to step S3.

[0016] S5: Construction and verification based on spatial trace positioning display: The spatial trace J displayed by XR equipment is used to construct and verify the complex spatial attachment surface.

[0017] The beneficial technical effects of this embodiment are: on the one hand, it solves the problem that complex spatial traces on spatial surfaces cannot be accurately and efficiently located directly in real space (possibly due to limited construction conditions), and the use of XR technology enables the construction process to have a reference to accurate design information; on the other hand, it can save the workload of construction layout (or verify the existing layout results of some conventional scenes) and use it as a basis for quality control during the construction process, thereby improving the overall efficiency and quality of construction.

[0018] Although the above embodiments have described in detail the concepts and embodiments of the present invention with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and changes can still be made to the present invention without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A method for visual positioning and verification of complex spatial structure traces with virtual-real integration, characterized by The method comprises the following steps: S1: Obtain the apparent shape data X of the complex space attachment surface in the real space R; S2: construct a virtual space V including the apparent shape data X of the complex space attachment surface and the space trace J, and select m feature points in the apparent shape data X of the complex space attachment surface as control points K m , n connection points T with local line-of-sight operation conditions are established in the virtual space V n ; S3: Use positioning equipment to locate n connection points T n Perform local positioning and layout, and use XR devices to identify n connection points T n To complete the display / projection of the virtual space V in the real space R; S4: Calculate the control point K displayed in the virtual space V m Whether the average offset from the feature point position of the real space R is less than the control accuracy d; if satisfied, proceed to step S5; if not satisfied, repeat back to step S3; S5: Use the spatial trace J displayed by the XR device to construct and verify the complex spatial attachment surface.

2. A method for visual positioning and verification of complex spatial structure traces with virtual-real fusion as claimed in claim 1, characterized in that In step S1, the apparent shape current data X of the complex space dependent surface is obtained by using machine vision means including mobile scanners, multi-eye cameras and three-dimensional laser scanners. The apparent shape current data X of the complex space dependent surface includes apparent shape morphology, material texture and color details.

3. A method for visual positioning and verification of complex spatial structure traces with virtual-real fusion as claimed in claim 1, characterized in that In step S2, the space trace J is designed, expressed and generated by performing Boolean operations between shapes using three-dimensional design software.

4. A method for visual positioning and verification of complex spatial structure traces of virtual-real fusion as claimed in claim 1, characterized in that In step S2, n connection points T n It is not directly arranged on the complex space attachment surface.

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