KR101665446B1 - Apparatus and method for generating 3d facility layout data from point-cloud data - Google Patents
Apparatus and method for generating 3d facility layout data from point-cloud data Download PDFInfo
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- KR101665446B1 KR101665446B1 KR1020150044481A KR20150044481A KR101665446B1 KR 101665446 B1 KR101665446 B1 KR 101665446B1 KR 1020150044481 A KR1020150044481 A KR 1020150044481A KR 20150044481 A KR20150044481 A KR 20150044481A KR 101665446 B1 KR101665446 B1 KR 101665446B1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
Abstract
The present invention relates to an apparatus and method for generating three-dimensional facility layout data from point cloud data. The apparatus for generating three-dimensional facility data according to an embodiment of the present invention includes: a shape data generation unit for generating three-dimensional shape data from point cloud data obtained by scanning a facility; A piping data processing unit for identifying a piping part from the three-dimensional shape data of the facility and removing shape data corresponding to the piping from the three-dimensional shape data of the facility; A device data processing unit for identifying the device part in the three-dimensional shape data from which the shape data corresponding to the pipe is removed and matching the description data of the device in the facility provided in advance; And a shape data combining unit for combining shape data corresponding to the apparatus and shape data corresponding to the pipe to output facility layout data.
Description
The present invention relates to an apparatus and method for generating three-dimensional facility layout data from point cloud data.
A plant is a collection of facilities that processes and processes raw materials to produce a specific product. For example, an offshore plant is a facility that excavates, drills and produces resources such as oil and gas buried in the sea. A desalination plant is a factory facility that processes seawater and obtains fresh water from it. Such a plant is typically complicated by machinery for processing or controlling fluid and piping facilities for providing fluid to the machine.
In the course of operation of the plant, the 3D CAD data of the plant may be needed to maintain the plant. However, it is often time-consuming to construct 3D CAD data from the plant's 2D drawings to the entire plant. Also, in case of constructing a new plant, in order to check whether the completed plant is dried as originally designed even after receiving the 3D CAD data of the plant from the manufacturer, the 3D CAD data May be required.
It is an object of the present invention to provide an apparatus and a method for generating three-dimensional arrangement data of a facility from point cloud data obtained by scanning a facility such as a plant or an ocean structure three-dimensionally.
The apparatus for generating three-dimensional facility data according to an embodiment of the present invention includes: a shape data generation unit for generating three-dimensional shape data from point cloud data obtained by scanning a facility; A piping data processing unit for identifying a piping part from the three-dimensional shape data of the facility and removing shape data corresponding to the piping from the three-dimensional shape data of the facility; A device data processing unit for identifying the device part in the three-dimensional shape data from which the shape data corresponding to the pipe is removed and matching the description data of the device in the facility provided in advance; And a shape data combining unit for combining shape data corresponding to the apparatus and shape data corresponding to the pipe to output facility layout data.
The shape data generation unit may generate triangular mesh shape data representing the external shape of the facility as a triangle mesh from the point cloud data.
The shape data generation unit may generate the triangle mesh shape data by connecting adjacent points included in the point cloud data by a straight line.
The piping data processing unit may retrieve the dimensional data of the piping installed in the facility and then detect a portion corresponding to the dimensional data among the three-dimensional shape data of the facility and determine the portion as the piping portion.
The piping data processing unit may detect a portion of the three-dimensional shape data of the facility which is continuous in a predetermined length or more in a section of a predetermined shape and determine the portion as the piping portion.
Wherein the apparatus data processing unit is configured to divide the three-dimensional shape data in which the shape data corresponding to the pipe is removed into individual shape objects for each of the separated objects in the three-dimensional space, simplify each shape object, The model data included in the data is compared with the simplified shape object, and when the similarity degree between the simplified shape object and the model data is equal to or greater than a preset value, the simplified shape object is mapped to the device of the corresponding description data .
The apparatus data processing unit may score the plurality of vertices constituting the shape object according to a predetermined criterion and then simplify the shape object by removing a part of the vertices in descending order of the score.
The device data processing unit may include a step of dividing the shape object into a plurality of elements, scoring the elements according to a predetermined criterion, and removing a part of the elements in descending order of the score, Can be simplified.
Wherein the device data processing unit determines whether or not the element is a port to which the fluid is to be sent, assigns a first score to the element, determines whether or not the element is in contact with the outer boundary of the shape object, A second score lower than the score.
The device data processing unit determines whether or not the element is adjacent to the element discriminated by the port and whether the element is adjacent to the element discriminated to be adjacent to the outer boundary and adds a third score lower than the second score to the element It can be tied.
The device data processing unit may: calculate the volume of each element and differentially score the element according to the volume rank of each element.
The shape data combination unit may include: a determination unit configured to determine a port position of the shape data corresponding to the device based on the description data matched to the device unit, and transmit shape data corresponding to the removed pipe to a port Location.
The apparatus for generating three-dimensional facility data according to an embodiment of the present invention identifies a piping part from three-dimensional shape data generated from point cloud data corresponding to the outline of a facility, A pipe data processing unit for removing the shape data corresponding to the shape data; Dimensional shape data in which the shape data corresponding to the pipe is removed is divided into individual shape objects for each of the separated objects in the three-dimensional space, the respective shape objects are simplified, and the simplified shape objects are stored in the facility A device data processing unit for matching the description data of the device; And a shape data combining unit for combining shape data corresponding to the apparatus and shape data corresponding to the pipe to output facility layout data.
A method for generating three-dimensional facility layout data according to an embodiment of the present invention is a method for generating a three-dimensional facility layout data of the facility based on point cloud data obtained by scanning a facility, Generating three-dimensional shape data of the facility from the data; Identifying a piping portion in the three-dimensional shape data of the facility; Removing shape data corresponding to the pipe from the three-dimensional shape data of the facility; Identifying the device part in the three-dimensional shape data from which the shape data corresponding to the pipe is removed; Matching the shape data corresponding to the identified device with the description data of the device in the facility provided in advance; And combining shape data corresponding to the apparatus with shape data corresponding to the pipe.
The step of generating the three-dimensional shape data of the facility may include: generating triangular mesh shape data representing the outline of the facility from the point cloud data by the triangle mesh.
Wherein identifying the piping portion comprises: loading dimensional data of a piping installed in the facility; And a step of detecting a portion corresponding to the dimensional data from the three-dimensional shape data of the facility and determining the portion as the piping portion.
The step of identifying the piping portion may include: detecting a portion of the three-dimensional shape data of the facility, the section of a predetermined shape continuing beyond a predetermined length, and determining the portion as the piping portion.
The step of identifying the device part comprises the steps of: dividing the three-dimensional shape data from which the shape data corresponding to the pipe has been removed into individual shape objects for each of the separated objects in the three-dimensional space; Simplifying each shape object; Invoking the model data included in the description data of the equipment in the facility and comparing the model data with the simplified shape object; And associating the simplified shape object with a device of the corresponding description data when the similarity degree between the simplified shape object and the model data is equal to or greater than a predetermined value.
Wherein the step of simplifying each of the shape objects comprises the steps of: scoring a plurality of vertices constituting the shape object according to a predetermined criterion; And removing some of the vertices in descending order of the score.
Wherein the step of simplifying each shape object comprises: dividing the shape object into a plurality of elements; Scoring the elements according to a predetermined criterion; And removing some of the elements in descending order of the score.
The step of combining the shape data corresponding to the device and the shape data corresponding to the pipe includes the steps of: determining a port position of shape data corresponding to the device based on the description data matched to the device portion; And connecting the shape data corresponding to the removed pipe to the port position of the shape data corresponding to the device.
The method for generating three-dimensional facility layout data according to an embodiment of the present invention may be implemented as a computer-executable program and recorded on a computer-readable recording medium.
The method for generating three-dimensional facility layout data according to an embodiment of the present invention may be implemented by a computer program stored in a medium for execution in combination with the computer.
According to the embodiment of the present invention, time and manpower for securing 3D CAD data of a facility can be saved by generating three-dimensional arrangement data of the facility from point cloud data obtained by scanning the facility.
1 is an exemplary block diagram of an apparatus for generating three-dimensional facility data according to an embodiment of the present invention.
FIG. 2 is an exemplary illustration of point cloud data obtained according to an embodiment of the present invention.
FIG. 3 is a diagram showing a part of triangular network data generated from point cloud data according to an embodiment of the present invention.
FIGS. 4 and 5 are illustrative drawings for explaining a process of identifying pipes in three-dimensional shape data of a facility according to an embodiment of the present invention.
6 is an exemplary diagram for explaining a process of identifying a pipe in the three-dimensional shape data of the facility according to another embodiment of the present invention.
7 is an exemplary diagram for explaining a process of identifying a device in three-dimensional shape data of a facility from which shape data corresponding to a pipe is removed according to an embodiment of the present invention.
8-10 are illustrative drawings for illustrating a process of simplifying a shape object according to an embodiment of the present invention.
Fig. 11 is an exemplary diagram showing how the shape objects shown in Figs. 8 to 10 are simplified according to the accuracy. Fig.
12 is an exemplary diagram illustrating a process of combining shape data corresponding to a device and shape data corresponding to a pipe according to an embodiment of the present invention.
13 is an exemplary flowchart of a method for generating three-dimensional facility layout data according to an embodiment of the present invention.
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings attached hereto.
1 is an exemplary block diagram of a three-dimensional facility layout
1, the three-dimensional facility layout
The shape
The shape
In addition, a program for generating three-dimensional facility layout data according to an embodiment of the present invention may be stored in a
The three-dimensional facility layout
FIG. 2 is an exemplary illustration of point cloud data obtained according to an embodiment of the present invention.
As shown in Fig. 2, the point cloud data is a set of a plurality of points located on the surface of the facility, each point having three-dimensional coordinates in a predetermined coordinate system. The three-dimensional coordinate may be a rectangular coordinate composed of an x-axis coordinate, a y-axis coordinate, and a z-axis coordinate, but is not limited thereto.
In addition, the point cloud data of the facility may be obtained by scanning white light as well as a laser in the facility, or may be obtained by using other measuring means such as sound waves in addition to light according to an embodiment.
The shape
FIG. 3 is a diagram showing a part of triangular network data generated from point cloud data according to an embodiment of the present invention.
3, the
According to one embodiment, the shape
In addition, according to the embodiment, the shape
Then, the piping
As described above, facilities such as plants and offshore structures are organically coupled to machinery for processing or controlling fluids and piping facilities for supplying fluids to the machines.
Accordingly, the present invention identifies a shape related to a pipe first in the three-dimensional shape data obtained from the facility's point cloud data, then removes the identified pipe portion from the three-dimensional shape data of the facility, Identify the shape.
According to one embodiment of the present invention, the piping
Dimension data of the piping disposed in the facility may be stored in the
FIGS. 4 and 5 are illustrative drawings for explaining a process of identifying pipes in three-dimensional shape data of a facility according to an embodiment of the present invention.
In general, piping is used as a passage through which a fluid flows, so that the shape of the piping is simple compared to other mechanical devices. For example, a pipe having a hollow cylindrical shape can be specified on the surface by the outer diameter and the length.
4, the piping
According to the embodiment, even in the case of a pipe bent at a predetermined angle other than a cylindrical pipe as shown in Fig. 5, the dimensional data is not limited to the outer diameter D of the pipe and the lengths (L 1 and L 2 ) If the angle of inclination (θ) is also included, each diverted pipe can be identified by using the corresponding dimensional data.
6 is an exemplary diagram for explaining a process of identifying a pipe in the three-dimensional shape data of the facility according to another embodiment of the present invention.
According to another embodiment of the present invention, in addition to the embodiment in which the piping shape is identified on the basis of the dimensional data of the piping in the facility, the piping
For example, instead of identifying the pipe shape on the basis of the outside diameter D and the length L of the pipe as described above, instead of identifying the pipe shape based on the circular cross section A in one part of the three- If it is continued beyond this preset length, the relevant part may be determined by piping. In FIG. 6, the cross section of the pipe is shown as being circular, but a pipe having a rectangular cross section according to the embodiment can also be detected by the same method.
As described above, in the embodiment of the present invention, the shape corresponding to the pipe can be first identified from the three-dimensional shape data of the facility obtained from the point cloud data, and then the shape corresponding to the device can be identified as described below.
Further, the piping
The device
According to one embodiment of the present invention, the device
7 is an exemplary diagram for explaining a process of identifying a device in three-dimensional shape data of a facility from which shape data corresponding to the pipes P1 to P5 have been removed according to an embodiment of the present invention.
7, when the piping parts P1 to P5 are identified by the piping
The
8-10 are illustrative drawings for illustrating a process of simplifying a
The following description of the shape object simplification according to the embodiment of the present invention is based on a three-dimensional model of the
According to an embodiment of the present invention, the
In this case, the device
For example, referring to FIG. 8, the
9, the device
In this manner, the device
Further, the device
10, an element first adjacent (element abutting) to an
The device
Further, the device
For example, the device
According to one embodiment, predetermined weights may be applied to scores scored according to the volume rank, scores scored for elements adjacent to the port, and scoring for elements adjacent to the outer boundary element, and the sum of these weights Lt; RTI ID = 0.0 > 1 < / RTI &
For example, the weights applied to the scores assigned to the volume rankings may be set to 0.4, the remaining two weights may be set to 0.3 (0.4 + 0.3 + 0.3 = 1) Can be changed.
The device
According to this embodiment, the target precision can be set to the precision of the model data provided in the description data of the equipment in the facility. To this end, the device
Fig. 11 is an exemplary diagram showing a
11, when the
If 40% of the LOD is input to the descriptive data such as a catalog of the device (i.e., the control valve) corresponding to the
Through the above-described process, the device
Then, the device
When the degree of similarity is equal to or greater than a predetermined value, the device
According to one embodiment, the description data of the device includes specifications of equipment installed in the facility, production information, shape model, and the like, and may include, for example, a catalog of the device. The catalog of such devices may be provided as a library of equipment and stored in the
Unlike the above, the device
When the device identification and description data matching by the device
According to the embodiment of the present invention, the shape
That is, according to this embodiment, the shape
Further, when connecting the piping part shape data and the device part shape data, a P & ID (Piping & Instrument Diagram) showing a two-dimensional connection relationship between the piping and the devices in the facility may be referred to in addition to the description data of the device .
12 is an exemplary diagram illustrating a process of combining shape data D3 corresponding to a device and shape data corresponding to pipes P4 and P5 according to an embodiment of the present invention.
12, the shape data P4 and P5 of the pipe identified by the piping
In this process, the shape
At this time, the shape
Through the above-described process, the three-dimensional facility layout
13 is an exemplary flowchart of a
The three-dimensional facility layout
Referring to FIG. 13, the method for generating three-dimensional
According to one embodiment, the step S310 of generating the three-dimensional shape data of the facility may include the step of generating triangular mesh shape data representing the outline of the facility from the point cloud data by a triangle mesh.
According to one embodiment, the step of identifying the piping section (S320) includes the steps of loading dimensional data of the piping installed in the facility, and detecting the portion corresponding to the dimensional data from the three-dimensional shape data of the facility, And a step of determining the number
According to another embodiment, the step of identifying the piping part (S320) includes a step of detecting a portion of the three-dimensional shape data of the facility which is continuous at a predetermined length or more in a section of a predetermined shape, can do.
According to an embodiment, the step of identifying the device part (S340) includes the steps of: dividing the three-dimensional shape data from which the shape data corresponding to the pipe is removed into individual shape objects for each of the separated objects in the three-dimensional space; (20), comparing the simplified shape object (20) with the model data contained in the description data of the in-facility device, and comparing the simplified shape object (20) with the model data And associating the
According to one embodiment, the step of simplifying each of the shape objects comprises the steps of scoreing a plurality of vertices constituting the
According to another embodiment, the step of simplifying each of the shape objects comprises the steps of dividing the
According to one embodiment, the step of combining the shape data corresponding to the device and the shape data corresponding to the pipe includes the steps of: determining a port position of shape data corresponding to the device based on explanatory data matched to the device portion; And connecting the shape data corresponding to the pipe to the port position of the shape data corresponding to the device.
The method for generating the three-dimensional facility layout data may be a program for being executed by a computer and stored in a computer-readable recording medium. The computer-readable recording medium includes all kinds of storage devices in which data that can be read by a computer system is stored. Examples of the computer-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like. Also, the method for generating the three-dimensional facility layout data may be implemented as a computer program stored in the medium for execution in combination with the computer.
While the present invention has been described with reference to the exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Those skilled in the art will appreciate that various modifications may be made to the embodiments described above. The scope of the present invention is defined only by the interpretation of the appended claims.
10: 3D facility layout data generation device
110: Processor
111:
112: piping data processing section
113: Device data processing section
114: shape data combining unit
120:
Claims (23)
A piping data processing unit for identifying a piping part from the three-dimensional shape data of the facility and removing shape data corresponding to the piping from the three-dimensional shape data of the facility;
A device data processing unit for identifying the device part in the three-dimensional shape data from which the shape data corresponding to the pipe is removed and matching the description data of the device in the facility provided in advance; And
And a shape data combining unit for combining the shape data corresponding to the device and the shape data corresponding to the pipe to output the facility arrangement data,
Wherein the device data processing unit comprises:
Dimensional shape data in which the shape data corresponding to the pipe is removed is divided into individual shape objects for each of the separated objects in the three-dimensional space, the respective shape objects are simplified, and the model data And comparing the simplified shape object with the device of the corresponding description data when the similarity degree between the simplified shape object and the model data is equal to or greater than a predetermined value,
A step of dividing the shape object into a plurality of elements, scoring according to a predetermined criterion on the elements, and extracting a part of the elements from the shape object in descending order of the score according to a target precision of the shape object Thereby simplifying the shape object,
And acquiring the model data of the device and the accuracy of the model data from the descriptive data of the device in the facility and setting the obtained precision to the target precision.
Wherein the shape data generator comprises:
And generating triangular mesh shape data representing the external shape of the facility as a triangle mesh from the point cloud data.
Wherein the shape data generator comprises:
And generates the triangle mesh shape data by connecting adjacent points included in the point cloud data by a straight line.
The piping data processing unit includes:
Dimensional structure data of the facility is read out and the portion corresponding to the dimensional data is detected and determined as the piping portion after the dimensional data of the piping installed in the facility is retrieved.
The piping data processing unit includes:
And a part of the three-dimensional shape data of the facility is continuous in a predetermined length or more in a section of a predetermined shape, and determines the part as the piping part.
Wherein the device data processing unit comprises:
It is determined whether or not the element is a port for sending and receiving fluid, a first score is given to the element,
And determines a second score lower than the first score for the element by determining whether the element is in contact with the outer boundary of the shape object.
Wherein the device data processing unit comprises:
A three-dimensional facility arrangement for determining whether an element is adjacent to an element discriminated by the port and whether the element is adjacent to an element discriminated to be tangent to the outer boundary, and assigning a third score lower than the second score to the element Data generating device.
Wherein the device data processing unit comprises:
Calculating a volume of each element, and differentially scoring the element according to the volume rank of each element.
Wherein the shape data combining unit comprises:
A port position of the shape data corresponding to the device is determined based on explanatory data matched to the device portion, and a shape data corresponding to the removed pipe is connected to a port position of the shape data corresponding to the device Facility placement data generation device.
Dimensional shape data in which the shape data corresponding to the pipe is removed is divided into individual shape objects for each of the separated objects in the three-dimensional space, the respective shape objects are simplified, and the simplified shape objects are stored in the facility A device data processing unit for matching the description data of the device; And
And a shape data combining unit for combining the shape data corresponding to the device and the shape data corresponding to the pipe to output the facility arrangement data,
Wherein the device data processing unit comprises:
The model data included in the description data of the in-facility device is retrieved and compared with the simplified shape object, and when the similarity degree between the simplified shape object and the model data is equal to or greater than a preset value, Data corresponding to the device,
A step of dividing the shape object into a plurality of elements, scoring according to a predetermined criterion on the elements, and extracting a part of the elements from the shape object in descending order of the score according to a target precision of the shape object Thereby simplifying the shape object,
And acquiring the model data of the device and the accuracy of the model data from the descriptive data of the device in the facility and setting the obtained precision to the target precision.
Generating three-dimensional shape data of the facility from the point cloud data;
Identifying a piping portion in the three-dimensional shape data of the facility;
Removing shape data corresponding to the pipe from the three-dimensional shape data of the facility;
Identifying the device part in the three-dimensional shape data from which the shape data corresponding to the pipe is removed;
Matching the shape data corresponding to the identified device with the description data of the device in the facility provided in advance; And
And combining the shape data corresponding to the device and the shape data corresponding to the pipe,
Wherein identifying the device portion comprises:
Dividing the three-dimensional shape data in which the shape data corresponding to the pipe is removed into individual shape objects for each of the separated objects in the three-dimensional space;
Simplifying each shape object;
Invoking the model data included in the description data of the equipment in the facility and comparing the model data with the simplified shape object; And
And associating the simplified shape object with a device of the corresponding description data when the similarity degree between the simplified shape object and the model data is equal to or greater than a predetermined value,
Wherein the step of simplifying each of the shape objects comprises:
Dividing the shape object into a plurality of elements;
Scoring the elements according to a predetermined criterion; And
And removing some of the elements in descending order of the score from the shape object according to a target precision of the shape object,
Wherein identifying the device portion comprises:
Obtaining the model data of the device and the precision of the model data from the description data of the device in the facility; And
And setting the obtained precision to the target precision.
The step of generating three-dimensional shape data of the facility comprises:
Generating three-dimensional facility layout data from the point cloud data by generating triangular network data representing the exterior of the facility as a triangle network.
Wherein identifying the piping portion comprises:
Loading dimension data of a pipe installed in the facility; And
Detecting a portion corresponding to the dimensional data among the three-dimensional shape data of the facility and determining the portion as the piping portion;
Dimensional facility layout data.
Wherein identifying the piping portion comprises:
Detecting a part of the three-dimensional shape data of the facility which is continuous in a predetermined length or more in a section of a predetermined shape, and determining the part as the piping part.
The step of combining the shape data corresponding to the apparatus and the shape data corresponding to the pipe includes the steps of:
Determining a port position of shape data corresponding to the device based on explanatory data matched to the device portion; And
Connecting the shape data corresponding to the removed pipe to a port position of shape data corresponding to the device;
Dimensional facility layout data.
A computer-readable recording medium storing a program for executing a three-dimensional facility layout data generation method according to any one of claims 14 to 17 and 21.
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KR101989700B1 (en) * | 2017-12-07 | 2019-06-14 | 경북대학교 산학협력단 | 3d modeling apparatus and method for modeling fitting based on point-cloud data obtained by 3d scanning |
US20190266793A1 (en) * | 2018-02-23 | 2019-08-29 | Lowe's Companies, Inc. | Apparatus, systems, and methods for tagging building features in a 3d space |
KR102042343B1 (en) * | 2018-04-13 | 2019-11-07 | 경북대학교 산학협력단 | Apparatus and method for genaration of depth image based on point-cloud data obtained by 3d scanning and method for identifing 3d object using the same |
KR102010500B1 (en) * | 2018-12-31 | 2019-08-13 | 주식회사 태울코리아 | Method and apparatus for hooking up pipes on based three-dimensional modeling |
KR102453427B1 (en) * | 2020-11-03 | 2022-10-12 | 아이씨티웨이주식회사 | Image processing device for 3d underground facility processing |
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JP2013088999A (en) * | 2011-10-18 | 2013-05-13 | Aero Asahi Corp | Building extraction device, method, and program |
KR101388749B1 (en) * | 2013-10-25 | 2014-04-29 | 중앙대학교 산학협력단 | System and method for 3d reconstruction of as-built industrial model from 3d data |
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