KR101541887B1 - Apparatus and method for simplifying assembly modeling data - Google Patents

Abstract

The present invention relates to an apparatus and method for simplifying modeling data of an assembly. An apparatus for simplifying an assembly modeling data according to an embodiment of the present invention includes a scoring unit for scoring each element of the assembly according to a plurality of evaluation items to which a score is differentially assigned; And an element removing unit that removes the element from the assembly in descending order of the score according to the target precision of the modeling data.

Description

[0001] APPARATUS AND METHOD FOR SIMPLIFIING ASSEMBLY MODELING DATA [0002]

The present invention is the result of a research project on project number 10040162, "Development of a lifecycle management system for the operational phase of a ship & offshore plant ".

The present invention relates to an apparatus and method for simplifying modeling data of an assembly.

Recently, the 3D CAD system has been introduced into the shipbuilding marine industry and has been widely used not only in the design of ships or offshore plants but also in the production and delivery stages. Particularly, it is possible to know beforehand whether the equipment is connected or interfered with at the design stage, so that the time required to install the equipment is shortened, the cost is reduced, and the productivity is greatly improved.

However, ships and offshore plants have a larger number of parts and complex structures than aircraft and automobiles, so they have a larger amount of 3D CAD data than other industries. Therefore, in order to reduce the size of 3D CAD data, the shipyard needs a remodeling work that leaves only the important part in the original CAD model shape of the equipment and simplifies the rest. Currently, this remodeling work is done manually by human.

Embodiments of the present invention aim to provide an apparatus and method for automatically simplifying assembly modeling data to reduce the time and cost of remodeling an assembly.

It is an object of the present invention to provide an apparatus and method for simplifying the modeling data of an assembly with a high degree of reliability so as not to cause a malfunction in the design and production of a structure by use of a simplified assembly model.

It is an object of the present invention to provide an apparatus and a method for simplifying modeling data of an assembly so that an LOD (Level of Detail) can be adjusted according to an intended use of the assembly model.

An apparatus for simplifying an assembly modeling data according to an embodiment of the present invention includes a scoring unit for scoring each element of the assembly according to a plurality of evaluation items to which a score is differentially assigned; And an element removing unit that removes the element from the assembly in descending order of the score according to the target precision of the modeling data.

The assembly may be a fitting installed on a ship or a plant.

Wherein the scoring unit comprises:

Determining whether or not each of the elements includes a port for sending and receiving a fluid, whether the element is in contact with an outer boundary of the assembly, and whether a connection portion between the components constituting the assembly is included, The score of the evaluation item can be added to the element.

Wherein the scoring unit assigns a first score to the element if the element is the port and assigns a second score lower than the first score to the element if the element contacts the outer boundary of the assembly, May include a third score that is lower than the second score in the corresponding element.

The assembly modeling data simplifying apparatus may further include a volume calculating unit for calculating a volume of each of the elements, and the scoring unit may score the elements differentially according to the volume rank of each of the elements.

The scoring unit may score each element with a ratio of the volume rank of the element to the total number of elements of the assembly.

Wherein the scoring unit determines whether or not each element is adjacent to an element discriminated by the port, whether the element is adjacent to the element discriminated to be adjacent to the outer boundary, and whether the element is adjacent to an element determined to contain the connecting part And assign a fourth score lower than the third score to the corresponding element.

The scoring unit may multiply the score of the element by a negative number when the element is located inside the assembly.

The element removing unit may remove the element from the assembly in descending order of the score according to a target LOD of the modeling data input from a user.

An apparatus for simplifying an assembly modeling data according to an embodiment of the present invention includes an input unit for receiving a target precision of the modeling data from a user; A storage unit for storing the modeling data; And a processor for scoring each element of the assembly according to a plurality of evaluation items to which the scores are differentially assigned and for removing the element from the assembly in descending order of the score according to the target precision, A first score on the element if the element is a port to which the fluid is to be sent and a second score lower than the first score on the element if the element contacts the outer boundary of the assembly, If the element includes a connection portion between the components constituting the assembly, a third score lower than the second score is added to the element, the volume of each element is calculated, The ratio of the volume rank of the element to the number of elements is scored, and the element is assigned to the element identified by the port Assigns a fourth score lower than the third score to the element, and when the element is adjacent to the element determined to be in contact with the outer boundary, assigns the fourth score to the element, If the element is adjacent to an element determined to contain a site, the fourth score is assigned to the element, and if the element is located inside the assembly, the score of the element can be multiplied by a negative number.

The method for simplifying assembly modeling data according to an embodiment of the present invention includes evaluating each element of the assembly according to a plurality of evaluation items to which a score is differentially assigned; Assigning to each of the elements the score of the corresponding evaluation item; And removing the element from the assembly in descending order of the score according to a target precision of the modeling data.

Wherein the evaluating step comprises the steps of: determining whether each of the elements includes at least one of a port for exchanging fluid, a contact with an outer boundary of the assembly, and a connection portion between the components constituting the assembly Step < / RTI >

Wherein the step of scoring comprises: if the element is the port, assigning a first score to the element; Assigning to the element a second score lower than the first score if the element is tangent to an outer boundary of the assembly; And assigning a third score to the element that is lower than the second score, if the element includes a connection site between the items.

Wherein the step of simplifying the assembly modeling data further comprises the step of calculating the volume of each element, wherein the step of scoreing comprises: grading the element differentially according to the volume rank of each element .

Scoring according to the volume rank of each element may include: scoring the ratio of the volume rank of the element to the total number of elements of the assembly to each element.

Wherein the evaluating step comprises: determining whether each element is adjacent to an element identified by the port, whether it is adjacent to an element determined to be tangent to the outer boundary, and whether the element is adjacent to an element determined to contain the connecting part And a step of judging whether or not it is possible.

Wherein the step of scoring comprises: if the element is adjacent to the element identified by the port, assigning the element a fourth score lower than the third score; Assigning the fourth score to the element if the element is adjacent to an element determined to be tangent to the outer boundary; And assigning the fourth score to the element if the element is adjacent to the element determined to include the connecting portion.

The step of scoring may further comprise multiplying a score of the element by a negative number when the element is located inside the assembly.

The step of removing the element may comprise: removing the element in descending order of the score from the assembly according to a target LOD of the modeling data input from a user.

The assembly modeling data simplification method according to an embodiment of the present invention may be implemented as a computer-executable program and recorded in a computer-readable recording medium.

According to the embodiment of the present invention, the modeling data of the assembly can be automatically simplified, thereby reducing the time and cost of remodeling the assembly.

According to the embodiment of the present invention, a consistent simplification result with high reliability can be obtained.

According to the embodiment of the present invention, the LOD of the simplified assembly model can be adjusted and applied to various fields.

1 is a block diagram illustrating an apparatus for simplifying an assembly modeling data according to an exemplary embodiment of the present invention.
FIGS. 2-4 and 6 are perspective views illustrating an exemplary model of a control valve assembly that is simplified in accordance with an embodiment of the invention.
Figure 5 is an exemplary diagram for explaining the adjacency relationship between elements according to an embodiment of the present invention.
FIG. 7 is a view illustrating a model of the control valve assembly shown in FIGS. 2 to 4 and 6, which is simplified according to the LOD.
8 is an exemplary flow chart for illustrating an assembly modeling data simplification method according to an embodiment of the present invention.

Other advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Unless defined otherwise, all terms (including technical or scientific terms) used herein have the same meaning as commonly accepted by the generic art in the prior art to which this invention belongs. Terms defined by generic dictionaries may be interpreted to have the same meaning as in the related art and / or in the text of this application, and may be conceptualized or overly formalized, even if not expressly defined herein I will not.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. As used herein, the terms' comprise 'and / or various forms of use of the verb include, for example,' including, '' including, '' including, '' including, Steps, operations, and / or elements do not preclude the presence or addition of one or more other compositions, components, components, steps, operations, and / or components. The term 'and / or' as used herein refers to each of the listed configurations or various combinations thereof.

It should be noted that the terms such as '~', '~ period', '~ block', 'module', etc. used in the entire specification may mean a unit for processing at least one function or operation. For example, a hardware component, such as a software, FPGA, or ASIC. However, '~ part', '~ period', '~ block', '~ module' are not meant to be limited to software or hardware. Modules may be configured to be addressable storage media and may be configured to play one or more processors. ≪ RTI ID = 0.0 >

Thus, by way of example, the terms 'to', 'to', 'to block', 'to module' refer to components such as software components, object oriented software components, class components and task components Microcode, circuitry, data, databases, data structures, tables, arrays, and the like, as well as components, Variables. The functions provided in the components and in the sections ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ' , '~', '~', '~', '~', And '~' modules with additional components.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings attached hereto.

1 is a block diagram illustrating an apparatus for simplifying an assembly modeling data according to an exemplary embodiment of the present invention.

1, the assembly modeling data simplifying apparatus 10 may include a processing unit 100, an input unit 200, and a storage unit 300. [ The processor 100 is a processor that executes a program for simplifying modeling data of an assembly, and may include, for example, a CPU, a GPU, and the like. The input unit 200 may include a keyboard, a mouse, and the like as an input device capable of receiving data from a user. The storage unit 300 is a memory for storing data. SSD, RAM, ROM, and the like.

According to one embodiment, the input unit 200 may receive the target precision of the modeling data from the user. The target precision may be, but is not limited to, the level of detail (LOD) of the assembly model.

The storage unit 300 stores modeling data of the assembly. The processing unit 100 may simplify the modeling data from the storage unit 300 and store the simplified modeling data in the storage unit 300 again.

According to one embodiment of the present invention, the processing unit 100 may score each element of the assembly according to a plurality of evaluation items in order to simplify the modeling data of the assembly. The processing unit 100 may then remove the elements from the assembly in descending order of the score according to the target precision.

The scores may be assigned differently to the plurality of evaluation items. In other words, the same scores are not given to the items that are applied to score the element. As will be described later, each evaluation item is given a score differentially according to its importance.

The assembly in which the modeling data is simplified according to an embodiment of the present invention may be a fitting installed in a ship or a plant, but is not limited thereto.

In addition, the assembly is formed by assembling a plurality of individual items, and each individual item may be composed of one or more elements. Here, the element may mean a feature, but is not limited thereto.

Referring again to FIG. 1, the processing unit 100 may include a scoring unit 110 and an element removing unit 120. The scoring unit 1110 may score each element of the assembly according to a plurality of evaluation items to which the scores are differently assigned. The ellipsis removal unit 120 may remove the elements in descending order of the score in the assembly according to the target precision of the modeling data.

According to an embodiment of the present invention, the scoring unit 110 may evaluate whether or not each element of the assembly is (i) a port for sending and receiving fluid, (ii) whether the element is in contact with an outer boundary of the assembly, And (iii) a connection portion between the components constituting the assembly. The scoring unit 110 may assign the score of the evaluation item corresponding to the element to the element.

According to the embodiment, an arbitrary element may correspond to a plurality of the evaluation items, and in this case, the scoring unit 110 may add the score of the evaluation items to the element.

Also, according to the embodiment, the scoring unit 110 may apply only a part of the above three evaluation items.

As described above, the scores may be differentially assigned to the three evaluation items. For example, if the element corresponds to a port, the scoring unit 110 assigns a first score to the element, assigns a second score when the element contacts the outer boundary of the assembly, If you include a site, you can assign a third score to that element.

According to one embodiment, the first score may be set higher than the second score, and the second score may be set higher than the third score (i.e., first score> second score> third score). For example, the first score may be set to three points, the second score to two points, and the third score to one point.

Figures 2-4 are perspective views illustrating an exemplary model of a control valve assembly as an assembly that is simplified in accordance with an embodiment of the invention.

As shown in FIGS. 2 to 4, the control valve assembly 20 controls the flow of the fluid by controlling the degree of opening of the valve, and a plurality of individual components are assembled and assembled.

In order to simplify the modeling data of the control valve assembly 20 according to an embodiment of the present invention, the scoring unit 110 may determine whether each element of the control valve assembly 20 is a port.

2, the control valve assembly 20 includes a total of two ports 201 and 202 and a first score, for example, three points, may be assigned to each of the elements 201 and 202 identified as ports have.

3, the scoring unit 110 may be configured to determine an outer boundary 250 of the control valve assembly 20 and to control the elements 201, 202, 203, 204, 205 ) Can be determined. As shown in FIG. 3, the outline boundary 250 may be a rectangular parallelepiped having a minimum volume surrounding the assembly, but the outer perimeter boundary may be a three-dimensional shape having an arbitrary shape depending on the assembly.

The scoring unit 110 may then assign a second score, for example, two points to the elements 201, 202, 203, 204, and 205 that are determined to be in contact with the outer boundary 250, respectively.

In addition, the scoring unit 110 may determine whether each element of the control valve assembly 20 includes a connection portion between the components constituting the assembly.

For example, referring to FIG. 4, in the control valve assembly 20, the handle and the upper body are separate components, and an element 206 corresponding to the rotation axis of the handle and an element 207 corresponding to the opening of the upper body Are in contact with each other, so that the two elements 206 and 207 can be determined to include the connection portion between the parts.

Accordingly, the scoring unit 110 may assign a third score, for example, one point to the two elements 206 and 207, respectively.

In this way, the scoring unit 110 can score each element of the assembly by applying the evaluation items to which the scores are differently assigned, to the element.

Referring again to FIG. 1, the processing unit 100 may further include a volume calculator 130. The volume calculator 130 may calculate the volume of each element of the assembly.

In this case, the scoring unit 110 may score the elements differentially according to the volume order of the respective elements.

For example, the scoring unit 110 may score the ratio of the volume rank of the corresponding element to the total number of elements of the assembly (i.e., the volume ranking of the elements / the total number of elements) for each element. As a result, the score given according to the volume ranking can be set lower than the third score.

According to another embodiment of the present invention, the scoring unit 110 determines whether each element of the assembly is adjacent to an element identified as (iv) a port, (v) whether it is adjacent to an element determined to be in contact with an outer boundary, And (vi) whether it is adjacent to an element that is determined to contain a linking site.

Figure 5 is an exemplary diagram for explaining the adjacency relationship between elements according to an embodiment of the present invention.

As shown in Fig. 5, the element F2 which is in contact with F1 based on the element F1 can be discriminated as being firstly adjacent to F1, and the elements F3 and F4 which are in contact with F2 can be discriminated as being secondarily adjacent to F1 .

Referring to FIG. 6, the elements that are first adjacent to the elements 201 and 202 identified as ports are element 208, and the second adjacent element is element 209. It is also contemplated that elements that are firstly adjacent to elements 201, 202, 203, 204, 205 that are in contact with the outer boundary 250 are elements 208, 210, 211, 214 and that second adjacent elements are elements 209, 212, 213, 206). Also, elements that are firstly adjacent to elements 206 and 207, which are elements including a connection site, are elements 214, 215, and 217, and secondarily adjacent elements are elements 205, 216, and 218.

According to one embodiment, the scoring unit 110 may assign the first adjacent elements a fourth score lower than the third score. According to an embodiment, the scoring unit 110 may assign the second adjacent elements a fifth score lower than the fourth score. In one example, the fourth and fifth scores may be set to 2/3 and 1/3, respectively, but are not limited thereto.

According to one embodiment of the present invention, a score assigned to the element adjacent to the port, a score assigned to the element adjacent to the outer boundary element, and an element adjacent to the connecting element, A predetermined weight can be applied to the score to be given, and the sum of these weights can be set to be 1. [

For example, the weights applied to the scores assigned to the volume rankings may be set to 0.4, and the remaining three weights may all be set to 0.2 (0.4 + 0.2 + 0.2 + 0.2 = 1) These weights can be changed.

According to an embodiment of the present invention, when the element is located inside the assembly, the scoring unit 110 may multiply a score assigned to the element by a negative number.

For example, although not shown in FIG. 6, elements that are internal to the control valve assembly 20 and difficult to identify outside (e.g., throttle, etc.) may be multiplied by a negative number, e.g., -1, in the score.

The scoring according to the embodiment of the present invention described above can be expressed by the following equation.

Where P ⁱ = P _a ⁱ + P _b ⁱ + P _c ⁱ ;

C ⁱ = w _a C _a ⁱ + w _b C _b ⁱ + w _c C _c ⁱ + w _d C _d ⁱ ; And

w _a + w _b + w _c + w _d = 1

sign Explanation Score N ⁱ Inside assembly -1 or 1
P ⁱ
P _a ⁱ : port 3 or 0 P _b ⁱ : outer boundary 2 or 0 P _c ⁱ : Connection area 1 or 0

C ⁱ

C _a ⁱ : volume ranking Volume rank / total number of elements C _b ⁱ : Port adjacency
2/3 (primary adjacent),
1/3 (second adjacent),
0 (remaining) C _c ⁱ : adjacent boundary border C _d ⁱ : adjacent site w _{a to d} : weight of C _{a to d} Base: 0.4, 0.2, 0.2, 0.2

Referring again to FIG. 1, the ellipsis 120 may remove elements from the assembly in descending order of the score according to the target precision of the modeling data.

As described above, the accuracy can be represented by LOD (%). If the target LOD is 100%, all elements included in the assembly are preserved. If the target LOD is 50%, half of the elements included in the assembly Can be removed.

The target precision may be input from the user through the input unit 200, but may be set in the assembly modeling data simplifying apparatus 10 according to the embodiment.

FIG. 7 is an exemplary view showing a model of the control valve assembly 20 shown in FIGS. 2 to 4 and 6, which is simplified according to the LOD.

7, when the control valve assembly 20 has a total of 141 elements when the LOD is 100%, 57 elements corresponding to the lower 40% of the lower score when the LOD is 60% Assembly 20 is removed. And, if the LOD is lowered to 40%, the 28 elements that correspond to the lower 20% points of the score are further removed.

According to the embodiment of the present invention, the lower the score, the higher priority is removed in the simplification process, so that the internal elements with a negative score are removed first, and the ports outside the assembly can be preserved to the last.

8 is an exemplary flow chart for illustrating an assembly modeling data simplification method according to an embodiment of the present invention.

As shown in FIG. 8, the method 30 for simplifying the assembly modeling data includes a step (S310) of evaluating each element of the assembly according to a plurality of evaluation items to which the scores are differentially assigned (S310) (S320) of scoring the evaluation items, and removing the elements in descending order of the score in the assembly (S330) according to the target precision of the modeling data.

According to one embodiment, the evaluating step S310 may include determining whether each element of the assembly is (i) a port to which fluid is being delivered or received, (ii) whether it is tangent to the outer boundary of the assembly, and (iii) And determining whether or not it includes a connection portion between the articles. According to the embodiment, the evaluating step S310 may apply only a part of the above three evaluation items.

According to this embodiment, the step of scoring (S320) comprises: if the element is a port, assigning a first score to the element; If the element is tangent to the outer boundary of the assembly, assigning the element a second score lower than the first score; And assigning a third score to the element that is lower than the second score, if the element includes a connection between the items. For example, the first score may be three points, the second score may be two points, and the third score may be one point, but the present invention is not limited thereto.

According to an embodiment of the present invention, the method for simplifying the assembly modeling data 30 may further include calculating the volume of each element.

According to this embodiment, the step of scoring (S320) may further include the step of differentially scoring the elements according to the volume rank of each element.

For example, scoreing according to the volume rank of each element may include scoring each element with a ratio of the volume rank of that element to the total number of elements of the assembly.

According to another embodiment of the present invention, the step of evaluating (S310) includes determining whether each element of the assembly is adjacent to an element determined as (iv) a port, (v) , And (vi) determining whether the element is adjacent to the element determined to include the connecting portion.

According to this embodiment, the step of scoring (S320) may further comprise assigning to the element a fourth score lower than the third score, if the element is adjacent to the element identified as a port have.

Similarly, the step of scoring (S320) may further include assigning the fourth score to the element if the element is adjacent to the element determined to be tangent to the outer boundary; And if the element is adjacent to the element determined to contain the connecting portion, assigning the fourth score to the element.

According to another embodiment of the present invention, the step S320 of scoring may further comprise, when the element is located inside the assembly, multiplying the score of the element by a negative number, e.g. -1 have. As a result, the elements located inside the assembly are scored lower than the elements located outside.

According to an embodiment of the present invention, the step of removing the element (S330) may include removing elements from the assembly in descending order of the score according to the target LOD of the modeling data input from the user. According to an embodiment, the LOD may be set in an apparatus that performs an assembly modeling data simplification method.

The method 30 for simplifying the assembly modeling data according to the embodiment of the present invention may be stored in a computer-readable recording medium that is manufactured as a program to be executed in the computer. 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.

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: Assembly modeling data simplification device
100:
110: Scoring part
120: Element removal
130:
200: Input unit
300:
400: Output section

Claims (20)

An apparatus for simplifying modeling data of an assembly,
Scoring each element of the assembly according to a plurality of evaluation items to which a score is differentially assigned and scoring a score of the element when the element is located inside the assembly; And
An element removing unit for removing the element from the assembly in descending order of the score according to the target precision of the modeling data;
/ RTI > The apparatus of claim < RTI ID = The method according to claim 1,
Wherein the assembly is a fitting installed on a ship or a plant. The method according to claim 1,
Wherein the scoring unit comprises:
Determining whether or not each of the elements includes a port for sending and receiving a fluid, whether the element is in contact with an outer boundary of the assembly, and whether a connection portion between the components constituting the assembly is included, An assembly modeling data simplification device for assigning the score of an evaluation item to an element. An apparatus for simplifying modeling data of an assembly,
A scoring unit for scoring each element of the assembly according to a plurality of evaluation items to which scores are differentially assigned; And
And an element removing section for removing the element from the assembly in descending order of the score according to a target precision of the modeling data,
Wherein the scoring unit comprises:
Determining whether or not each of the elements includes a port for sending and receiving a fluid, whether the element is in contact with an outer boundary of the assembly, and whether a connection portion between the components constituting the assembly is included, The score of the evaluation item is assigned to the element,
If the element is the port, assigning a first score to the element,
If the element is tangent to the outer boundary of the assembly, assigning a second score to the element that is lower than the first score,
And if the element comprises a connection site between the pieces, assigning to the element a third score lower than the second score. The method according to claim 1 or 4,
The assembly modeling data simplifying apparatus further includes a volume calculating section for calculating a volume of each of the elements,
Wherein the scoring unit comprises:
Wherein the elements are differentially scored according to the volume rank of each element. 6. The method of claim 5,
Wherein the scoring unit comprises:
Wherein each element is scored to a ratio of the volume rank of the element to the total number of elements of the assembly. 5. The method of claim 4,
Wherein the scoring unit comprises:
Determining whether each of the elements is adjacent to an element discriminated by the port, whether or not the element is adjacent to the element discriminated to be adjacent to the outer boundary, and whether the element is adjacent to the element discriminated to include the connecting portion, Element to a fourth score lower than the third score. delete The method according to claim 1 or 4,
The element removing unit includes:
And removes the elements in descending order of the score from the assembly according to a target level of detail (LOD) of the modeling data received from a user. An apparatus for simplifying modeling data of an assembly,
An input unit for receiving a target precision of the modeling data from a user;
A storage unit for storing the modeling data; And
And a processor for scoring each element of the assembly according to a plurality of evaluation items to which the scores are differentially assigned and removing the element from the assembly in descending order of the score according to the target precision,
Wherein the processing unit comprises:
If the element is a port for sending and receiving fluid, a first score is assigned to the element,
If the element is tangent to the outer boundary of the assembly, assigning a second score to the element that is lower than the first score,
If the element includes a connection portion between the components constituting the assembly, assigning to the element a third score lower than the second score,
Calculating a volume of each element and then scoring each element with a ratio of the volume rank of the element to the total number of elements of the assembly,
If the element is adjacent to the element identified by the port, assigning the element a fourth score lower than the third score,
If the element is adjacent to an element determined to be tangent to the outer boundary, assigning the fourth score to the element,
If the element is adjacent to an element determined to include the connecting portion, assigning the fourth score to the element,
And when the element is located inside the assembly, multiplying the score of the element by a negative number. A method for simplifying modeling data of an assembly,
Evaluating each element of the assembly according to a plurality of evaluation items to which a score is differentially assigned;
Assigning to each of the elements the score of the corresponding evaluation item; And
And removing the elements from the assembly in descending order of the score according to the target precision of the modeling data,
Wherein the step of scoring comprises:
And multiplying a score of the element by a negative number if the element is located inside the assembly. 12. The method of claim 11,
Wherein the evaluating step comprises:
And determining whether each of the elements includes at least two of: whether the element is a port for exchanging fluid, whether it is in contact with an outer boundary of the assembly, and whether it includes a connection portion between the components constituting the assembly. Data simplification method. A method for simplifying modeling data of an assembly,
Evaluating each element of the assembly according to a plurality of evaluation items to which a score is differentially assigned;
Assigning to each of the elements the score of the corresponding evaluation item; And
And removing the elements from the assembly in descending order of the score according to the target precision of the modeling data,
Wherein the evaluating step comprises:
Determining whether each of the elements includes at least one of a port for sending and receiving fluid, a contact with an outer boundary of the assembly, and a connection portion between the components constituting the assembly,
Wherein the step of scoring comprises:
Assigning a first score to the element if the element is the port;
Assigning to the element a second score lower than the first score if the element is tangent to an outer boundary of the assembly; And
Assigning a third score to the element that is lower than the second score if the element comprises a connection between the items;
/ RTI > wherein the assembly modeling data is simplified. 14. The method according to claim 11 or 13,
The method for simplifying the modeling data further comprises calculating a volume of each element,
Wherein the step of scoring comprises:
Further comprising the step of differentially scoring the elements according to the volume rank of each of the elements. 15. The method of claim 14,
The step of scoring according to the volume rank of each element comprises:
And scoring each element with a ratio of the volume rank of the element to the total number of elements of the assembly. 14. The method of claim 13,
Wherein the evaluating step comprises:
Determining whether each of the elements is adjacent to the element identified by the port, whether or not the element is adjacent to the element determined to be in contact with the outer boundary, and whether the element is adjacent to the element determined to contain the connection portion Further comprising the steps of: 17. The method of claim 16,
Wherein the step of scoring comprises:
Assigning a fourth score lower than the third score to the element if the element is adjacent to the element identified by the port;
Assigning the fourth score to the element if the element is adjacent to an element determined to be tangent to the outer boundary; And
Assigning the fourth score to the element if the element is adjacent to an element determined to comprise the connecting portion;
≪ / RTI > delete 14. The method according to claim 11 or 13,
Wherein removing the element comprises:
And removing the element from the assembly in descending order of the score according to a target LOD of the modeling data received from a user. A computer-readable recording medium,
A recording medium on which a computer-executable program is recorded, which implements the assembly modeling data simplification method according to claim 11 or claim 13.

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