Computing device, storage medium and method for processing dimension numbers using the computing device

• US 8,909,504 B2
• Filed: 03/29/2012
• Issued: 12/09/2014
• Est. Priority Date: 10/20/2011
• Status: Expired due to Fees

• Current Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Inventors: Chang, Chih-Kuang, Wu, Xin-Yuan, Rao, Jin-Gang
• Primary Examiner(s): Phan, Thai
• Application Number:
  US13/433,380
• Publication Number:
  US 20130103361A1
• Time in Patent Office: 985 Days
• Field of Search: 703/2, 703/6, 715/273
• US Class Current: 703/2
• CPC Class Codes: G06F 30/00 Computer-aided design [CAD]
• CPC Class Codes: G06T 19/00 Manipulating 3D models or images for computer graphics
• CPC Class Codes: G06T 2210/12 Bounding box
• CPC Class Codes: G06T 2219/012 Dimensioning, tolerancing
• CPC Class Codes: G06V 30/422 Technical drawings; Geographical maps

Abstract

A method for processing dimension numbers using a computing device, a first template of a dimension frame and a plurality of second templates of dimension numbers 0-9, and a numerical text data of each second template are established. A plurality of block objects are obtained by grouping all discontinuous line segments in the engineering drawing. All frame objects in the engineering drawing are obtained by matching each of the block objects with the first template. One or more remainder objects in each bounding box are obtained, and grouped to obtain one or more number objects in each of the frame objects. A matched second template of each of the number objects is obtained by matching each of the number objects with each of the second templates. The number objects in each of the frame objects are replaced by corresponding numerical text data.

Claims

1. A computer-implemented method for processing dimension numbers using a computing device, the method comprising:

(a) loading an engineering drawing of a workpiece from a storage system of the computing device, and reading discontinuous data of a selected dimension frame and dimension numbers comprising 0 to 9 in the engineering drawing;

(b) establishing a first template of the selected dimension frame and a plurality of second templates of the dimension numbers according to the discontinuous data, and establishing a numerical text data of each of the second templates;

(c) obtaining a plurality of block objects by grouping all discontinuous line segments in the engineering drawing;

(d) obtaining all frame objects in the engineering drawing by matching each of the block objects with the first template;

(e) calculating a bounding box of each of the frame objects, and obtaining the discontinuous line segments in each bounding box except the discontinuous line segments of each of the frame objects corresponding to the bounding box as one or more remainder objects in each bounding box, the one or more remainder objects representing the discontinuous data of one or more dimension numbers in each of the frame objects;

(f) obtaining one or more number objects in each of the frame objects by grouping the one or more remainder objects in each bounding box;

(g) obtaining a matched second template of each of the number objects by matching each of the number objects with each of the second templates; and

(h) replacing the one or more number objects in each of the frame objects by corresponding numerical text data, according to the matched second template of each of the number objects and the numerical text data of each of the second templates.

2. The method as claimed in claim 1, wherein the first template is established according to a size and a shape of the selected dimension frame in the engineering drawing, and the first template comprises a plurality of continuous line segments of the selected dimension frame and coordinates of endpoints of each of the continuous line segments;

and

each of the second templates of the dimension numbers is established according to a size and shape of each of the dimension numbers in the engineering drawing, and each of the second templates comprises a plurality of continuous line segments of each of the dimension numbers and coordinates of the endpoints of each of the continuous line segments.

3. The method as claimed in claim 2, wherein the first template comprising the continuous line segments is established by setting coordinates of two adjacent endpoints in discontinuous line segments of the selected dimension frame to be the same, and the two adjacent endpoints representing a distance between two endpoints being lower that a predetermined distance tolerance;

and

each of the second templates comprising the continuous line segments is established by setting coordinates of the two adjacent endpoints in discontinuous line segments of each of the dimension numbers to be same.

4. The method as claimed in claim 3, wherein step (c) further comprises:

(c1) traversing endpoints of all the discontinuous line segments and calculating a distance between discretional two endpoints;

(c2) dividing two discontinuous line segments comprising two adjacent endpoints into a group, the distance of the two adjacent endpoints being lower than a predetermined distance tolerance;

(c3) setting coordinates of the two adjacent endpoints in each group to be the same; and

(c4) obtaining continuous line segments in each group as a block object, and executing step (c2) to step (c3) repeatedly until all the endpoints of all the discontinuous line segments have been traversed.

5. The method as claimed in claim 4, wherein step (d) further comprises:

(d1) extracting first boundary points of one of the block objects by extracting endpoints having different coordinates in the block object, and extracting second boundary points of the first template by extracting endpoints having different coordinates in the first object;

(d2) determining whether the block object conforms to a shape of the first template, according to a first number of the first boundary points and a second number of the second boundary points;

(d3) returning to step (d1) until all the block objects have been matched, upon the condition that the block object does not conform to the shape of the first template, or calculating an original iterative position of the block object according to a first central position of the block object and a second central position of the first template, upon the condition that the block object conforms to the shape of the first template;

(d4) calculating a minimum distance between the first boundary points and the second boundary points at a last iteration of an iterative method, according to a predetermined iterative formula and the original iterative position; and

(d5) confirming that the block object matches the first template, and outputting the block object upon the condition that the minimum distance is lower than a predetermined deviation, or confirming that the block object does not match the first template, upon the condition that the minimum distance is greater than or equal to the predetermined deviation, and returning to step (d1).

6. The method as claimed in claim 4, wherein step (g) further comprises:

(g1) extracting third boundary points of one of the number objects by extracting endpoints having different coordinates in the number object,

(g2) extracting fourth boundary points of one of the second template by extracting endpoints having different coordinates in the one of the second templates;

(g3) determining whether the number object conforms to a shape of one of the second templates, according to a third number of the third boundary points and a fourth number of the fourth boundary points;

(g4) returning to step (g2) until one of the second templates is matched to the number object have been obtained, upon the condition that the number object does not conform to the shape of one of the second templates, or calculating an original iterative position of the number object according to a third central position of the number object and a fourth central position of one of the second templates, upon the condition that the number object conforms to the shape of one of the second templates;

(g5) calculating a minimum distance between the third boundary points and the fourth boundary points at a last iteration of an iterative method, according to the predetermined iterative formula and the original iterative position; and

(g6) confirming that the number object matches one of the second templates, and outputting the matched second template of the number object upon the condition that the minimum distance is lower than a predetermined deviation, and returning to step (g1) until the matched second templates of all the number objects in each frame object have been obtained;

or confirming that the number object does not match one of the second templates, upon the condition that the minimum distance is greater than or equal to the predetermined deviation, and returning to step (g2).

7. A non-transitory computer readable storage medium storing a set of instructions, when executed by at least one processor of a computing device, cause the at least one processor to perform a method for processing dimension numbers using the computing device, the method comprising:

(a) loading an engineering drawing of a workpiece from a storage system of the computing device, and reading discontinuous data of a selected dimension frame and dimension numbers comprising 0 to 9 in the engineering drawing;

(b) establishing a first template of the selected dimension frame and a plurality of second templates of the dimension numbers according to the discontinuous data, and establishing a numerical text data of each of the second templates;

(c) obtaining a plurality of block objects by grouping all discontinuous line segments in the engineering drawing;

(d) obtaining all frame objects in the engineering drawing by matching each of the block objects with the first template;

(e) calculating a bounding box of each of the frame objects, and obtaining the discontinuous line segments in each bounding box except the discontinuous line segments of each of the frame objects corresponding to the bounding box as one or more remainder objects in each bounding box, the one or more remain objects representing the discontinuous data of one or more dimension numbers in each of the frame objects;

(f) obtaining one or more number objects in each of the frame objects by grouping the one or more remainder objects in each bounding box;

(g) obtaining a matched second template of each of the number objects by matching each of the number objects with each of the second templates;

(h) replacing the one or more number objects in each of the frame objects by corresponding numerical text data, according to the matched second template of each of the number objects and the numerical text data of each of the second templates.

8. The non-transitory computer readable storage medium as claimed in claim 7, wherein the first template is established according to a size and a shape of the selected dimension frame in the engineering drawing, and the first template comprises a plurality of continuous line segments of the selected dimension frame and coordinates of endpoints of each of the continuous line segments;

and

each of the second templates of the dimension numbers is established according to a size and a shape of each of the dimension numbers in the engineering drawing, and each of the second templates comprises a plurality of continuous line segments of each of the dimension numbers and coordinates of the endpoints of each of the continuous line segments.

9. The non-transitory computer readable storage medium as claimed in claim 8, wherein the first template comprising the continuous line segments is established by setting coordinates of two adjacent endpoints in discontinuous line segments of the selected dimension frame to be same, and the two adjacent endpoints representing a distance between two endpoints being lower that a predetermined distance tolerance;

and

each of the second templates comprising the continuous line segments is established by setting coordinates of the two adjacent endpoints in discontinuous line segments of each of the dimension numbers to be same.

10. The non-transitory computer readable storage medium as claimed in claim 7, wherein step (c) further comprises:

(c1) traversing endpoints of all the discontinuous line segments and calculating a distance between discretional two endpoints;

(c2) dividing two discontinuous line segments comprising two adjacent endpoints into a group;

(c3) setting coordinates of the two adjacent endpoints in each group to be same; and

(c4) obtaining continuous line segments in each group as a block object, and executing step (c2) to step (c3) repeatedly until all the endpoints of all the discontinuous line segments have been traversed.

11. The non-transitory computer readable storage medium as claimed in claim 10, wherein step (d) further comprises:

(d1) extracting first boundary points of the block object by extracting endpoints having different coordinates in the block object, and extracting second boundary points of the first template by extracting endpoints having different coordinates in the first object;

(d2) determining whether the block object conforms to a shape of the first template, according to a first number of the first boundary points and a second number of the second boundary points;

(d3) returning to the step (d1) until all the block objects have been matched, upon the condition that the block object does not conform to the shape of the first template, or calculating an original iterative position of the block object according to a first central position of the block object and a second central position of the first template, upon the condition that the block object conforms to the shape of the first template;

(d4) calculating a minimum distance between the first boundary points and the second boundary points at a last iteration of an iterative method, according to a predetermined iterative formula and the original iterative position;

(d5) confirming that the block object matches the first template, and outputting the block object upon the condition that the minimum distance is lower than a predetermined deviation, or confirming that the block object does not match the first template, upon the condition that the minimum distance is greater than or equal to the predetermined deviation, and returning to the step (d1).

12. The non-transitory computer readable storage medium as claimed in claim 10, wherein step (g) further comprises:

(g1) extracting third boundary points of the number object by extracting endpoints having different coordinates in the number object,

(g2) extracting fourth boundary points of one of the second template by extracting endpoints having different coordinates in the one of the second templates;

(g3) determining whether the number object conforms to a shape of one of the second templates, according to a third number of the third boundary points and a fourth number of the fourth boundary points;

(g4) returning to the step (g2) until one of the second templates matched to the number object have been obtained, upon the condition that the number object does not conform to the shape of one of the second templates, or calculating an original iterative position of the number object according to a third central position of the number object and a fourth central position of one of the second templates, upon the condition that the number object conforms to the shape of one of the second templates;

(g5) calculating a minimum distance between the third boundary points and the fourth boundary points at a last iteration of an iterative method, according to the predetermined iterative formula and the original iterative position;

(g6) confirming that the number object matches one of the second templates, and outputting the matched second template of the number object upon the condition that the minimum distance is lower than a predetermined deviation, and returning to the step (g1) until the matched second templates of all the number objects in each frame object have been obtained;

or confirming that the number object does not match one of the second templates, upon the condition that the minimum distance is greater than or equal to the predetermined deviation, and returning to the step (g2).

13. A computing device, comprising:

a storage system;

at least one processor; and

one or more programs that are stored in the storage system and executed by the at least one processor, the one or more programs comprising;

a reading module that loads an engineering drawing of a workpiece from the storage system, and reads discontinuous data of a selected dimension frame and dimension numbers comprising 0 to 9 in the engineering drawing;

an establishment module that establishes a first template of the selected dimension frame and a plurality of second templates of the dimension numbers according to the discontinuous data, and establishing a numerical text data of each of the second templates;

a group module that obtains a plurality of block objects by grouping all discontinuous line segments in the engineering drawing;

a match module that obtains all frame objects in the engineering drawing by matching each of the block objects with the first template;

an acquisition module that calculates a bounding box of each of the frame objects, and obtains the discontinuous line segments in each bounding box except the discontinuous line segments of each of the frame objects corresponding to the bounding box as one or more remainder objects in each bounding box, the one or more remain objects representing the discontinuous data of one or more dimension numbers in each of the frame objects;

the group module further obtains one or more number objects in each of the frame objects by grouping the one or more remainder objects in each bounding box;

the match module further obtains a matched second template of each of the number objects by matching each of the number objects with each of the second templates; and

a replacement module that replaces the one or more number objects in each of the frame objects by corresponding numerical text data, according to the matched second template of each of the number objects and the numerical text data of each of the second templates.

14. The computing device as claimed in claim 13, wherein the establishment module establishes the first template according to a size and a shape of the selected dimension frame in the engineering drawing, and the first template comprises a plurality of continuous line segments of the selected dimension frame and coordinates of endpoints of each of the continuous line segments;

and

the establishment module establishes each of the second templates of the dimension numbers according to a size and a shape of each of the dimension numbers in the engineering drawing, and each of the second templates comprises a plurality of continuous line segments of each of the dimension numbers and coordinates of the endpoints of each of the continuous line segments.

15. The computing device as claimed in claim 13, wherein the first template comprising the continuous line segments is established by setting coordinates of two adjacent endpoints in discontinuous line segments of the selected dimension frame to be same, and the two adjacent endpoints representing a distance between two endpoints being lower that a predetermined distance tolerance;

and

each of the second templates comprising the continuous line segments is established by setting coordinates of the two adjacent endpoints in discontinuous line segments of each of the dimension numbers to be same.

16. The computing device as claimed in claim 13, wherein the group module obtaining the block objects comprises:

(c1) traversing endpoints of all the discontinuous line segments and calculating a distance between discretional two endpoints;

(c2) dividing two discontinuous line segments comprising two adjacent endpoints into a group;

(c3) setting coordinates of the two adjacent endpoints in each group to be same; and

(c4) obtaining continuous line segments in each group as a block object, and executing step (c2) to step (c3) repeatedly until all the endpoints of all the discontinuous line segments have been traversed.

17. The computing device as claimed in claim 16, wherein the match module match each of the block objects with the first template by following steps:

(d1) extracting first boundary points of the block object by extracting endpoints having different coordinates in the block object, and extracting second boundary points of the first template by extracting endpoints having different coordinates in the first object;

(d2) determining whether the block object conforms to a shape of the first template, according to a first number of the first boundary points and a second number of the second boundary points;

(d3) returning to step (d1) until all the block objects have been matched, upon the condition that the block object does not conform to the shape of the first template, or calculating an original iterative position of the block object according to a first central position of the block object and a second central position of the first template, upon the condition that the block object conforms to the shape of the first template;

(d4) calculating a minimum distance between the first boundary points and the second boundary points at a last iteration of an iterative method, according to a predetermined iterative formula and the original iterative position;

(d5) confirming that the block object matches the first template, and outputting the block object upon the condition that the minimum distance is lower than a predetermined deviation, or confirming that the block object does not match the first template, upon the condition that the minimum distance is greater than or equal to the predetermined deviation, and returning to step (d1).

18. The computing device as claimed in claim 13, wherein the match module match each of the one or more number objects with each of the second templates by the following steps:

(g1) extracting third boundary points of the number object by extracting endpoints having different coordinates in the number object,

(g2) extracting fourth boundary points of one of the second template by extracting endpoints having different coordinates in the one of the second templates;

(g3) determining whether the number object conforms to a shape of one of the second templates, according to a third number of the third boundary points and a fourth number of the fourth boundary points;

(g4) returning to step (g2) until one of the second templates matched to the number object have been obtained, upon the condition that the number object does not conform to the shape of one of the second templates, or calculating an original iterative position of the number object according to a third central position of the number object and a fourth central position of one of the second templates, upon the condition that the number object conforms to the shape of one of the second templates;

(g5) calculating a minimum distance between the third boundary points and the fourth boundary points at a last iteration of an iterative method, according to the predetermined iterative formula and the original iterative position;

(g6) confirming that the number object matches one of the second templates, and outputting the matched second template of the number object upon the condition that the minimum distance is lower than a predetermined deviation, and returning to step (g1) until the matched second templates of all the number objects in each frame object have been obtained;

or confirming that the number object does not match one of the second templates, upon the condition that the minimum distance is greater than or equal to the predetermined deviation, and returning to step (g2).