CN110807830A - Laser point cloud automatic processing system for actual measurement actual quantity of building - Google Patents
Laser point cloud automatic processing system for actual measurement actual quantity of building Download PDFInfo
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- CN110807830A CN110807830A CN201911101113.XA CN201911101113A CN110807830A CN 110807830 A CN110807830 A CN 110807830A CN 201911101113 A CN201911101113 A CN 201911101113A CN 110807830 A CN110807830 A CN 110807830A
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Abstract
The invention discloses a laser point cloud automatic processing system for actual measurement of a building, which comprises a control unit, a camera unit, a building image extraction unit and an overlapped preliminary comparison unit, and relates to the technical field of three-dimensional laser point cloud data processing. This towards building actual measurement's laser point cloud automatic processing system, scan through laser point cloud scanning unit, laser point cloud coordinate system establishes the coordinate system through RANSCA algorithm, and compare the coordinate on each laser point, set for the difference value through threshold value setting module, when there is the coordinate of one axle to be the same between two laser points, when two equidirectional coordinate difference values are less than the setting value in addition, carry out the alignment through the unified module of laser point coordinate, change the coordinate value into the value that is the same, can effectively prevent to produce the reflection because building surface angle is uneven to laser, the condition that leads to the model that obtains changes, can carry out the alignment to the laser point of being refracted automatically.
Description
Technical Field
The invention relates to the technical field of three-dimensional laser point cloud data processing, in particular to an automatic laser point cloud processing system for actual measurement of a building.
Background
The three-dimensional digital city is a trend of global information development of cities in the future and gradually becomes a hotspot of research, in the construction of a geographic space frame of the digital city, a three-dimensional digital city model is a bright point of novelty and liveliness, more technology sublimation crystallization and more attention is paid to people, three-dimensional modeling and application are developed in more and more cities, the building model in the three-dimensional city is one of necessary steps and key contents of the digital city, in addition, as a new technology in the construction field, the application of the BIM technology of the building information model in the aspects of building information model reconstruction, management and the like is gradually researched, and all-aspect information of the building, such as the information of the geometry, the physics, the structure, the technology and the like of the model can be obtained by reconstructing the information model of the building, decision and service are provided for building reconstruction, renovation and protection, and meanwhile, the three-dimensional digital city can be used for building navigation, Emergency warning, etc., and geometric model information in the BIM technology is more important information.
When the existing laser point cloud measuring system is used for actually measuring buildings, although the measuring speed is high, when some buildings with slightly inclined surfaces are measured, the irradiated laser is easy to slightly refract, and a model established by feedback information is easy to cause the position of a laser point in an established coordinate system to deviate because the laser point is refracted, so that the accuracy of the established model is low.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a laser point cloud automatic processing system for building actual measurement, which solves the problems that when some buildings with slightly inclined surfaces are measured, the irradiated laser is easy to slightly refract, and the position of the laser point in the established coordinate system is easy to deviate due to the refraction of the laser point, so that the established model has lower precision.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a laser point cloud automatic processing system facing to actual measurement of a building comprises a control unit, a camera unit, a building image extraction unit, an overlapped preliminary comparison unit, a laser point cloud scanning unit, a laser point cloud feedback receiving unit, an adjustment unit, a digital modeling unit, a gps positioning unit, a cloud platform, a data receiving unit, a storage unit, a terrain modeling unit and a display unit, wherein the output end of the control unit is respectively connected with the camera unit, the laser point cloud scanning unit and the input end, the output end of the camera unit is connected with the input end of the building image extraction unit, the output end of the laser point cloud scanning unit is connected with the input end of the laser point cloud feedback receiving unit, the output end of the laser point cloud feedback receiving unit is connected with the input end of the adjustment unit, and the output ends of the adjustment unit and the building image extraction unit are both connected with the input end of the digital modeling unit, and the output end of the digital modeling unit is connected with the input end of the gps positioning unit.
Preferably, the output end of the gps positioning unit is connected with the input end of the cloud platform through a 4G network, and the output end of the cloud platform is connected with the input end of the data receiving unit.
Preferably, the output end of the data receiving unit is connected with the input end of the storage unit, the output end of the storage unit is connected with the input end of the terrain modeling unit, and the output end of the terrain modeling unit is connected with the input end of the display unit.
Preferably, the adjusting unit comprises a laser point cloud coordinate system establishing module, a laser point coordinate comparison module, a threshold setting module and a laser point coordinate system module, and the output end of the laser point cloud coordinate system establishing module is connected with the input end of the laser point coordinate comparison module.
Preferably, the output end of the laser point coordinate comparison module is connected with the input end of the threshold setting module, and the output end of the threshold setting module is connected with the input end of a module of the laser point coordinate system.
Preferably, the preliminary overlap comparison unit comprises a building image projection module, a laser point cloud projection module, a projection overlap module and a projection display module, wherein the output end of the building image projection module is connected with the input end of the laser point cloud projection module, the output end of the laser point cloud projection module is connected with the input end of the projection overlap module, and the output end of the projection overlap module is connected with the input end of the projection display module.
Preferably, the digital modeling unit comprises a digital modeling module, a digital modeling display module and a digital modeling adjustment module, wherein the output end of the digital modeling module is connected with the input end of the digital modeling display module, and the output end of the digital modeling display module is connected with the input end of the digital modeling adjustment module.
Preferably, the terrain modeling unit comprises a physical modeling module, an integral derivation module and a physical modeling adjustment module, wherein the output end of the physical modeling module is connected with the input end of the integral derivation module, and the output end of the integral derivation module is connected with the input end of the physical modeling adjustment module.
(III) advantageous effects
The invention provides a laser point cloud automatic processing system for actual measurement of a building. Compared with the prior art, the method has the following beneficial effects:
(1) the automatic processing system of the laser point cloud facing the actual measurement of the building is characterized in that the output end of a control unit is respectively connected with a camera shooting unit, a laser point cloud scanning unit and an input end, the output end of the camera shooting unit is connected with the input end of a building image extraction unit, the output end of the laser point cloud scanning unit is connected with the input end of a laser point cloud feedback receiving unit, the output end of the laser point cloud feedback receiving unit is connected with the input end of an adjusting unit, the output ends of the adjusting unit and the building image extraction unit are both connected with the input end of a digital modeling unit, the output end of the digital modeling unit is connected with the input end of a gps positioning unit, scanning is carried out through the laser point cloud scanning unit, a coordinate system is established through an SCARAN algorithm by a laser point cloud coordinate system establishing module, coordinates on each laser point are compared, when the coordinates of one shaft between the two laser points are the same and the difference value of the other two same-direction coordinates is smaller than a set value, the laser points are aligned through the laser point coordinate unification module, the coordinate values are changed into the same value, the situation that the obtained model is changed due to reflection of laser caused by uneven surface angles of buildings can be effectively prevented, and the refracted laser points can be automatically aligned.
(2) The automatic processing system for the laser point cloud of the actual measurement amount of the building comprises a building image projection module, a laser point cloud projection module, a projection overlapping module and a projection display module in an overlapping initial comparison unit, wherein the output end of the building image projection module is connected with the input end of the laser point cloud projection module, the output end of the laser point cloud projection module is connected with the input end of the projection overlapping module, the output end of the projection overlapping module is connected with the input end of the projection display module, projection is carried out by a building image projection module and a laser point cloud projection module, whether the non-overlapping parts exist is observed by a projection display module, then digital modeling is carried out by a digital modeling module, the digital modeling adjustment module is used for simple adjustment, and the method for measuring the laser points together with the influence ensures the precision in measurement and increases the measurement precision.
(3) This towards building actual measurement real-quantity's laser point cloud automatic processing system, through including digital modeling module at digital modeling unit, digital modeling display module and digital modeling adjustment module, digital modeling module's output and digital modeling display module's input are connected, and digital modeling display module's output and digital modeling adjustment module's input are connected, carry out digital modeling through digital modeling module, back is simply adjusted through digital modeling adjustment module, after errorless, send the cloud platform, receive and store through the storage unit, carry out the topography modeling through topography modeling unit, and show through the display element, can be quick handle the data that obtain, and send the cloud platform, realize the intercommunication of data fast.
Drawings
FIG. 1 is a schematic block diagram of the system of the present invention;
FIG. 2 is a schematic block diagram of an adjustment unit of the present invention;
FIG. 3 is a functional block diagram of an overlap preliminary comparison unit according to the present invention;
FIG. 4 is a functional block diagram of the digital modeling unit of the present invention;
FIG. 5 is a schematic block diagram of a terrain modeling unit of the present invention.
In the figure, 1-a control unit, 2-a camera unit, 3-a building image extraction unit, 4-an overlapping preliminary comparison unit, 5-a laser point cloud scanning unit, 6-a laser point cloud feedback receiving unit, 7-an adjusting unit, 8-a digital modeling unit, 9-gps positioning unit, 10-a cloud platform, 11-a data receiving unit, 12-a storage unit, 13-a terrain modeling unit, 14-a display unit, 41-a building image projection module, 42-a laser point cloud projection module, 43-a projection overlapping module, 44-a projection display module, 71-a laser point cloud coordinate system establishing module, 72-a laser point coordinate comparison module, 73-a threshold setting module, 74-a laser point coordinate system module, a laser point cloud scanning unit, a, 81-digital modeling module, 82-digital modeling display module, 83-digital modeling adjustment module, 131-physical modeling module, 132-integral derivation module and 133-physical modeling adjustment module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, an embodiment of the present invention provides a technical solution: a laser point cloud automatic processing system facing building actual measurement comprises a control unit 1, a camera unit 2, a building image extraction unit 3, an overlapped preliminary comparison unit 4, a laser point cloud scanning unit 5, a laser point cloud feedback receiving unit 6, an adjustment unit 7, a digital modeling unit 8, a gps positioning unit 9, a cloud platform 10, a data receiving unit 11, a storage unit 12, a terrain modeling unit 13 and a display unit 14, wherein the output end of the control unit 1 is respectively connected with the camera unit 2, the laser point cloud scanning unit 5 and the input end, the output end of the camera unit 2 is connected with the input end of the building image extraction unit 3, the output end of the laser point cloud scanning unit 5 is connected with the input end of the laser point cloud feedback receiving unit 6, and the output end of the laser point cloud feedback receiving unit 6 is connected with the input end of the adjustment unit 7, the adjusting unit 7 comprises a laser point cloud coordinate system establishing module 71, a laser point coordinate comparison module 72, a threshold setting module 73 and a laser point coordinate system one module 74, the output end of the laser point cloud coordinate system establishing module 71 is connected with the input end of the laser point coordinate comparison module 72, the output end of the laser point coordinate comparison module 72 is connected with the input end of the threshold setting module 73, the output end of the threshold setting module 73 is connected with the input end of the laser point coordinate system one module 74, the output ends of the adjusting unit 7 and the building image extracting unit 3 are both connected with the input end of the overlap preliminary comparing unit 4, the overlap preliminary comparing unit 4 comprises a building image projection module 41, a laser point cloud projection module 42, a projection overlap module 43 and a projection display module 44, the output end of the building image projection module 41 is connected with the input end of the laser point cloud projection module 42, the output end of the laser point cloud projection module 42 is connected with the input end of the projection overlapping module 43, projection is carried out through the building image projection module 41 and the laser point cloud projection module 42, whether the non-overlapping part exists is observed through the projection display module 44, then digital modeling is carried out through the digital modeling module 81, simple adjustment is carried out through the digital modeling adjustment module 83, the precision during measurement is ensured through a method of measuring together with laser points, the measurement precision is increased, the output end of the projection overlapping module 43 is connected with the input end of the projection display module 44, the output end of the overlapping primary comparison unit 4 is connected with the input end of the digital modeling unit 8, the digital modeling unit 8 comprises the digital modeling module 81, the digital modeling display module 82 and the digital modeling adjustment module 83, the output end of the digital modeling module 81 is connected with the input end of the digital modeling display module 82, the output end of the digital modeling display module 82 is connected with the input end of the digital modeling adjustment module 83, digital modeling is carried out through the digital modeling module 81, simple adjustment is carried out through the digital modeling adjustment module 83, the digital modeling adjustment module is sent to the cloud platform 10 after no error, the digital modeling adjustment module is received and stored through the storage unit 12, terrain modeling is carried out through the terrain modeling unit 13, and display is carried out through the display unit 14, the obtained data can be rapidly processed and sent to the cloud platform 10, data intercommunication is rapidly realized, the output end of the digital modeling unit 8 is connected with the input end of the gps positioning unit 9, the output end of the gps positioning unit 9 is connected with the input end of the cloud platform 10 through a 4G network, the output end of the cloud platform 10 is connected with the input end of the data receiving unit 11, the output end of the data receiving unit 11 is connected with the input end of the storage unit, the output end of the storage unit 12 is connected with the input end of the terrain modeling unit 13, the terrain modeling unit 13 comprises a physical modeling module 131, an integral derivation module 132 and a physical modeling adjustment module 133, the output end of the physical modeling module 131 is connected with the input end of the integral derivation module 132, the output end of the integral derivation module 132 is connected with the input end of the physical modeling adjustment module 133, the output end of the terrain modeling unit 13 is connected with the input end of the display unit 14, scanning is carried out through the laser point cloud scanning unit 5, the laser point cloud coordinate system establishment module 71 establishes a coordinate system through an RANSCA algorithm, coordinates on each laser point are compared, a difference value is set through the threshold setting module 73, when the coordinates of one axis are the same between two laser points, and the difference value of the other two coordinates in the same direction is smaller than a set value, alignment is carried out through the laser point coordinate unification, the coordinate values are changed into the same values, the situation that the obtained model is changed due to reflection of laser caused by uneven building surface angles can be effectively prevented, and the refracted laser points can be automatically aligned.
When the building image projection device is used, a building is shot through the shooting unit 2, a simple frame is extracted through the building image extraction unit 3, scanning is carried out through the laser point cloud scanning unit 5, information is received through the laser point cloud feedback receiving unit 6, a coordinate system is established through the laser point cloud coordinate system establishment module 71, coordinates on each point are compared, a difference value is set through the threshold value setting module 73, when the coordinates of one axis are the same between two laser points, and the difference value of the other two same-direction coordinates is smaller than a set value, alignment is carried out through the laser point coordinate unification module 74, the coordinate values are changed into the same value, then projection is carried out through the building image projection module 41 and the laser point cloud projection module 42, whether non-overlapping parts exist or not is observed through the projection display module 44, and then digital modeling is carried out through the digital modeling module 81, the simple adjustment is performed by the digital modeling adjustment module 83, and after no error, the adjustment is transmitted to the cloud platform 10, the storage is received by the storage unit 12, the terrain modeling is performed by the terrain modeling unit 13, and the display is performed by the display unit 14.
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.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a towards building actual measurement real volume's laser point cloud automatic processing system, includes the control unit (1), camera unit (2), building image extraction element (3), overlap preliminary comparing element (4), laser point cloud scanning unit (5), laser point cloud feedback receiving element (6), adjusting element (7), digital modeling unit (8), gps positioning unit (9), cloud platform (10), data receiving element (11), memory cell (12), topography modeling unit (13) and display element (14), its characterized in that: the output end of the control unit (1) is respectively connected with the camera unit (2), the laser point cloud scanning unit (5) and the input end, the output end of the camera unit (2) is connected with the input end of the building image extraction unit (3), the output end of the laser point cloud scanning unit (5) is connected with the input end of the laser point cloud feedback receiving unit (6), the output end of the laser point cloud feedback receiving unit (6) is connected with the input end of the adjusting unit (7), the output ends of the adjusting unit (7) and the building image extracting unit (3) are connected with the input end of the primary overlapping comparing unit (4), and the output of the overlap preliminary comparison unit (4) is connected to the input of the digital modeling unit (8), the output end of the digital modeling unit (8) is connected with the input end of the gps positioning unit (9).
2. The automatic processing system for laser point cloud of actual measurement quantity of buildings according to claim 1, characterized in that: the output end of the gps positioning unit (9) is connected with the input end of the cloud platform (10) through a 4G network, and the output end of the cloud platform (10) is connected with the input end of the data receiving unit (11).
3. The automatic processing system for laser point cloud of actual measurement quantity of buildings according to claim 1, characterized in that: the output of the data receiving unit (11) is connected to the input of a memory unit (12), and the output of the memory unit (12) is connected to the input of a terrain modeling unit (13), the output of the terrain modeling unit (13) being connected to the input of a display unit (14).
4. The automatic processing system for laser point cloud of actual measurement quantity of buildings according to claim 1, characterized in that: the adjusting unit (7) comprises a laser point cloud coordinate system establishing module (71), a laser point coordinate comparison module (72), a threshold setting module (73) and a laser point coordinate system module (74), wherein the output end of the laser point cloud coordinate system establishing module (71) is connected with the input end of the laser point coordinate comparison module (72).
5. The automatic processing system of laser point cloud facing actual measurement of building of claim 4, wherein: the output end of the laser point coordinate comparison module (72) is connected with the input end of the threshold setting module (73), and the output end of the threshold setting module (73) is connected with the input end of a laser point coordinate system module (74).
6. The automatic processing system for laser point cloud of actual measurement quantity of buildings according to claim 1, characterized in that: the overlap preliminary comparison unit (4) comprises a building image projection module (41), a laser point cloud projection module (42), a projection overlap module (43) and a projection display module (44), wherein the output end of the building image projection module (41) is connected with the input end of the laser point cloud projection module (42), the output end of the laser point cloud projection module (42) is connected with the input end of the projection overlap module (43), and the output end of the projection overlap module (43) is connected with the input end of the projection display module (44).
7. The automatic processing system for laser point cloud of actual measurement quantity of buildings according to claim 1, characterized in that: the digital modeling unit (8) comprises a digital modeling module (81), a digital modeling display module (82) and a digital modeling adjustment module (83), wherein the output end of the digital modeling module (81) is connected with the input end of the digital modeling display module (82), and the output end of the digital modeling display module (82) is connected with the input end of the digital modeling adjustment module (83).
8. The automatic processing system for laser point cloud of actual measurement quantity of buildings according to claim 1, characterized in that: the terrain modeling unit (13) comprises a physical modeling module (131), an overall derivation module (132), and a physical modeling adjustment module (133), an output of the physical modeling module (131) is connected with an input of the overall derivation module (132), and an output of the overall derivation module (132) is connected with an input of the physical modeling adjustment module (133).
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| CN112008409A (en) * | 2020-09-03 | 2020-12-01 | 杭州吉宝传动设备有限公司 | Manufacturing system and manufacturing method for automatically processing hub unit |
| CN112669364A (en) * | 2020-12-07 | 2021-04-16 | 盎锐（上海）信息科技有限公司 | Display method and measurement system for actual measurement |
| CN113310533A (en) * | 2021-07-02 | 2021-08-27 | 江苏省苏中建设集团股份有限公司 | Automatic actual measurement system of building engineering |
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