JP2023163347A - Drawing processor - Google Patents

Abstract

To provide a technology capable of properly extracting an information connecting relation described by a table in drawing data.SOLUTION: A drawing processor according to the present invention detects a table in drawing data, identifies a connecting relation between information described inside the table and information described outside the table or between pieces of the information described in the table using a straight line, and generates the connecting information presenting the connecting information.SELECTED DRAWING: Figure 1

Description

The present invention relates to a technique for processing drawing data.

Maintenance and inspection work at the site where equipment is installed has been increasingly digitized in recent years. For example, an inspection worker carries a mobile terminal such as a tablet terminal when going to the site, and supports the field work by displaying work support information on the terminal. Electronic paper may be used as an example of a worker terminal. Electronic paper is characterized by its light weight, low power consumption, and high outdoor visibility, making it suitable for supporting field work.

In maintenance and inspection work, for example, a circuit drawing is visually checked to check whether the circuit is actually electrically conductive. The circuit drawing describes the connection relationship of circuit components (for example, a circuit diagram), and an operator performs a continuity check according to the connection order of the components indicated by the connection relationship. The check results are input to the worker terminal.

When a worker visually checks a drawing to be inspected, there is a possibility that the checking process may be omitted. By digitizing the drawings, the connection relationships of the devices to be inspected are also digitized, thereby making it possible to comprehensively present the connection relationships of the devices to be inspected to the operator. In other words, it is thought that such omission of work can be suppressed.

Patent Document 1 listed below describes a technology related to digital processing of circuit diagrams. The document states, ``By considering parasitic capacitance on the element layout, more accurate circuit simulation results can be obtained. 'In addition to the process of extracting elements, connection information, and parasitic capacitance of wiring, in addition to the process of extracting elements, connection information, and wiring parasitic capacitance, Corresponding means for pairing element symbols and parasitic capacitance symbols arranged on element recognition figures of an element recognition drawing showing extraction results obtained by adding processing for extracting parasitic capacitance at intersecting points, and element recognition. An extraction means is provided for extracting node names from the wiring on the drawing, and the corresponding means searches for the node names at both ends of the element symbol and the parasitic capacitance symbol, and selects the node names at both ends of the parasitic capacitance symbol. If a node name is not found in the node names extracted by the extraction means, the element is divided into multiple stages, the net list for circuit simulation is modified using intermediate node names, and circuit simulation is executed. ” (see summary).

Japanese Patent Application Publication No. 2002-328965

In some drawing data, components listed in tables are connected to other components by straight lines, thereby expressing the connection relationships of devices. As an example, a circuit diagram around the terminal block is described by representing a terminal block in an electric circuit as a cell in a table and connecting wiring connected to the terminal block to each cell in the table.

In order to digitize the connection relationships described in such drawing data, it is necessary to extract from the drawing data the connection relationships of information described around the table in the drawing data. However, in the prior art such as Patent Document 1, a specific method for appropriately extracting connection relationships of information around a table has not been established.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a technique that can appropriately extract connection relationships of information described around a table in drawing data.

A drawing processing device according to the present invention detects a table in drawing data, and creates a gap between information written in the table and information written outside the table, or between information written in the table. , and generate connection information representing the connection relationship.

According to the drawing processing apparatus according to the present invention, it is possible to appropriately extract connection relationships of information described around a table described by drawing data. Problems, configurations, and effects other than those described above will be made clear by the following description of the embodiments.

1 is a configuration diagram of a work support system 1 according to a first embodiment. FIG. 2 is a flowchart illustrating a process in which the drawing processing device 2 extracts a connection relationship between a table in drawing data and characters written around the table. A processing image at each step in FIG. 2A is shown. 12 is a flowchart illustrating another process in which the drawing processing device 2 extracts connection relationships between table cells in drawing data. A processing image in each step of FIG. 3A is shown. 12 is a flowchart illustrating another process in which the drawing processing device 2 extracts a connection relationship between a table cell in drawing data and a drawing symbol in another cell. An image of processing in each step of FIG. 4A is shown. This is an example of drawing data showing that a circuit drawing and a table are connected. This is an example of connection information representing a connection relationship between wiring and a table. This is an example of line segment information described by drawing data. This is an example of drawing symbol information described by drawing data. This is an example of character information described in drawing data. This is an example of work support information that the management system 3 presents to the worker terminal 4. This is an example in which an arrow line segment exists in a table in which drawing data is described. FIG. 2 is a configuration diagram of a drawing processing device 2 in Embodiment 2. FIG. It is a flowchart explaining the procedure by which the arrow detection unit 26 detects an arrow. 12 is a flowchart illustrating another procedure in which the arrow detection unit 26 detects an arrow. An example of a curved arrow is shown. 15 is a flowchart illustrating a procedure in which the arrow detection unit 26 detects a bent arrow as shown in FIG. 14. This is an example in which links spanning pages of a spreadsheet containing drawing data are described by arrows. Fig. 3 is an example of a line segment connected to a table and an arrow further connected to the table. 3 is a configuration diagram of a drawing processing device 2 in Embodiment 3. FIG. 3 is a flowchart illustrating the operation of the attribute assigning unit 27.

<Embodiment 1>
FIG. 1 is a configuration diagram of a work support system 1 according to Embodiment 1 of the present invention. The work support system 1 supports a worker's on-site work by presenting work support information to the worker terminal 4. The work support system 1 includes a drawing processing device 2, a management system 3 (work support device), and a worker terminal 4. The worker terminal 4 is made of electronic paper, for example.

The management system 3 includes a drawing connection information database (DB) 31, a work data storage section 32, a communication section 33, a received data analysis section 34, and a display control section 35. The drawing connection information DB 31 stores connection information (details will be described later) presented to the worker terminal 4. The work data storage unit 32 stores drawing data (work data) presented on the worker terminal 4. The communication unit 33 communicates with the worker terminal 4. The received data analysis unit 34 receives input data of a work record from the worker terminal 4 (for example, handwritten data describing a continuity check result: described later), and analyzes the work record described by the data. The display control unit 35 controls information displayed by the worker terminal 4 (information transmitted to the worker terminal 4).

The drawing processing device 2 is a device that digitizes connection relationships described by the drawing data (generates data describing connection relationships) by processing the drawing data presented to the worker terminal 4. . The drawing processing device 2 includes a line segment information generation section 21, a character information generation section 22, a table detection section 23, a line detection section 24, and a connection information generation section 25.

The line segment information generation unit 21 extracts line segments from drawing data and generates information representing their coordinates and the like. The character information generation unit 22 extracts characters from drawing data and generates information representing the character strings and coordinates. If the drawing data is data that describes coordinate information of line segments or characters, such as a PDF, the coordinate information etc. may be extracted as is. If the drawing data is an image, line segments, characters, and their coordinates may be extracted using any image recognition technology. Among the line segments in the drawing data, line segments forming a table are detected by the table detection unit 23. The line detection unit 24 processes line segments in the drawing data that represent connection relationships. Details of the table detection section 23, line detection section 24, and connection information generation section 25 will be described later.

FIG. 2A is a flowchart illustrating a process in which the drawing processing device 2 extracts a connection relationship between a table in drawing data and characters written around the table. The processing image of this flowchart will be explained again with reference to FIG. 2B. The table detection unit 23 detects a table portion from the drawing data (S1-1). Any known technique can be used as an algorithm for detecting tables. The line detection unit 24 identifies line segments in the drawing data whose end points are within the table area (S1-2). Line segments that are not within the table area are not covered by this flowchart. The line detection unit 24 detects the connection direction of the line segments (S1-3). The line detection unit 24 detects character information existing in the connection direction of the line segments (S1-4). The connection information generation unit 25 stores the connection information that describes the connection relationship between the table and the character information identified in the above steps into the drawing connection information DB 31 (S1-5).

FIG. 2B shows a processing image at each step in FIG. 2A. Specific examples of each step will be explained below along with processing images. In this example, the line segments and the table are connected in the horizontal direction, but even if they are connected in the vertical direction, the same procedure can be used by changing the vertical and horizontal directions as appropriate.

Assume that in S1-1, a table of upper left coordinates (x1, y1) and lower right coordinates (x2, y2) is detected.

In S1-2, the line detection unit 24 determines that the line segment is within the table area if the left end (xs1, ys1) of the line segment satisfies both conditions (a) and (b) below: (a ) x1≦xs1≦x2; (b) y1≦ys1≦y2. The right end (xs2, ys2) of the line segment is similarly determined.

In S1-3, the line detection unit 24 considers that the line segment is heading in the direction from one endpoint existing in the table area to the other endpoint. This is the connecting direction of the line segments. In FIG. 2B, the direction from left to right is the connection direction of the line segments.

In S1-4, the line detection unit 24 searches for character information in the direction in which the line segments are connected. The coordinates of the character information are expressed by the coordinates of the area where the characters are written (for example, the upper left coordinates (xc1, yc1) and the lower right coordinates (xc2, yc2)). The line detection unit 24 detects character information closest to a line segment. For example, if the character information satisfies both conditions (a) and (b) below, it is determined that the character information and the line segment are connected. xth is a determination threshold: (a) xc1≦xs2+xth; (b) yc1≦ys1 (=ys2)≦yc2.

FIG. 3A is a flowchart illustrating another process in which the drawing processing device 2 extracts connection relationships between table cells in drawing data. The processing image of this flowchart will be explained again with reference to FIG. 3B. This flowchart is for extracting connection relationships by crossover wires illustrated in FIG. 3B. In this flowchart, S1-6 is executed instead of S1-3, and S1-7 or S1-4 is executed depending on the result of S1-6. Since the other steps are similar to those in FIG. 2A, steps different from those in FIG. 2A will be described below.

The line detection unit 24 determines whether the end point of the line segment (the end point on the side that is not in the table) is on another line segment (S1-6). If the end point is on another line segment, the line detection unit 24 groups those line segments (S1-7). If not, it is determined whether character information exists near the end point (same as S1-4). The connection information generation unit 25 stores the connection information that describes the connection relationship between the intra-cell information identified through the above steps into the drawing connection information DB 31 (S1-5).

FIG. 3B shows a processing image at each step in FIG. 3A. Specific examples of each step will be explained below along with processing images.

In S1-1, it is assumed that the table detection unit 23 detects a table having eight cells shown in FIG. 3B. The first cell and the eighth cell are connected by three line segments. This is an example of a drawing showing that the first terminal and the eighth terminal among eight terminals are connected. Wiring that connects terminals in this way is called a crossover wire. The method for detecting tables and line segments is the same as in FIGS. 2A and 2B.

In S1-7, the line detection unit 24 detects a line segment group connecting the first cell and the eighth cell. If the ends (xs21, ys21) of the line segment connected to the first cell terminate on another line segment, these line segments are considered to constitute a line segment group. In the example of FIG. 3B, the end points of the two line segments are on the same coordinates, so it can be determined that these are a line segment group by satisfying the following (a) and (b): (a) x21=x21' and ys21=ys21'; (b) x22=x22' and ys22=ys22'.

In FIG. 3B, the line segment extending from the first cell and the line segment extending from the eighth cell are connected by the longest line segment, but furthermore, for example, the line segment extending from the fifth cell terminates on the longest line segment. If so, these four line segments are determined to be a line segment group. In this case, the conditions for the x coordinate in the above determination conditions (a) and (b) are not necessary, and it is sufficient to determine whether the condition for the y coordinate is satisfied or not.

FIG. 4A is a flowchart illustrating another process in which the drawing processing device 2 extracts a connection relationship between a table cell in drawing data and a drawing symbol in another cell. The processing image of this flowchart will be explained again with reference to FIG. 4B. This flowchart is for extracting connection relationships for drawing symbols in cells illustrated in FIG. 4B. In this flowchart, S1-8 is performed between S1-2 and S1-3, and S1-9 is performed instead of S1-4. Since the other steps are similar to those in FIG. 2A, steps different from those in FIG. 2A will be described below.

The line detection unit 24 detects the end points of line segments that touch the ruled lines of the cells in the table (S1-8). The line detection unit 24 determines whether the end point of the line segment on the side that is not in contact with the ruled line contacts a drawing symbol (whether or not the drawing symbol exists in the direction toward the line segment connection direction) (S1-9). . If it exists, connection information representing the connection relationship between the drawing symbol and the information described by the cell at one end of the line segment is generated and stored (S1-5).

FIG. 4B shows a processing image at each step in FIG. 4A. Specific examples of each step will be explained below along with processing images.

In S1-8, the line detection unit 24 detects the end points of line segments that touch the ruled lines of the cells in the table. Since the ruled lines of cells within a table are also line segments, the line segments referred to here exclude the line segments that constitute the table. In the example shown in FIG. 4B, whether a line segment is in contact with a cell ruled line can be determined by whether the following conditions (a) and (b) are both satisfied: (a) xk1=xs1; (b) yk1 ≦ys1≦yk2.

In S1-9, the line detection unit 24 determines whether drawing symbols are connected at opposite end points in the connection direction of the line segments (direction outward from the cells in the table). The coordinates of a drawing symbol can be expressed by upper left coordinates (xz1, yz1) and lower right coordinates (xz2, yz2), similarly to character information. Whether a line segment and a drawing symbol are connected can be determined by whether the following conditions (a) and (b) are both satisfied: (a) xz1=xs2; (b) yz1≦ys2≦yz2.

In the example of Figure 4B, the drawing symbol exists within the cell, but instead, if the outermost ruled line of the table touches the line segment, the cell inside the table and the drawing symbol outside the table are connected. It turns out. In this case as well, the connection relationship between the cells in the table and the drawing symbols can be specified by the same procedure as in FIGS. 4A and 4B. Instead of the drawing symbols in the table, it is also possible to specify the connection relationship between text information in the cell.

FIG. 5A is an example of drawing data showing that a circuit drawing and a table are connected. When two drawing symbols and two wiring lines are connected as shown in FIG. 5A, the connection information generation unit 25 generates connection information as shown in the lower part of FIG. 5A. Furthermore, one end of the wiring 2 may be connected to the front surface. In FIG. 5A, the left end of the cell in the first row and first column of the table is connected to the wiring 2.

FIG. 5B is an example of connection information representing the connection relationship between the wiring and the table. Connection information #1 represents the connection relationship between the wiring 2 and the first row, first column cell in FIG. 5A. Connection information #2 indicates the connection relationship between the first cell (first row, first column) and the eighth cell (first row, eighth column) in the table by the wiring 10 outside the table. represent. This corresponds to the crossover wire described in FIG. 3B. Connection information #3 represents a connection relationship in which cells in the table are connected by arrows. A specific example will be explained in Embodiment 2 below. Connection information #4 represents a connection relationship in which cells in Table 1 and cells in Table 2 (and information in these cells) are connected by line segments. Connection information #5 represents a connection relationship in which a table cell is connected to an external wiring, and the other end of the external wiring is connected to character information. This corresponds to the example described in FIG. 2B. As explained above, whether one end of a line segment is connected to a cell can be determined by whether one end of the line segment is on a ruled line.

FIG. 6 is an example of line segment information described by drawing data. A line segment can be represented by starting point coordinates and ending point coordinates. If a plurality of line segments constitute a line segment group, the start and end points of each line segment may be grouped to form one line segment group. Wiring No. 4 is one example. If the drawing data does not have line segment information (for example, it is described by an image), the line segment information generation unit 21 extracts line segment information similar to that in FIG. 6 from the drawing data. The same applies to drawing symbols and character information that will be explained next.

FIG. 7 is an example of drawing symbol information described by drawing data. The coordinates of a drawing symbol can be defined as two diagonal points of a rectangular area in which the drawing symbol is written, as a starting point and an ending point. Furthermore, it may be defined whether the direction in which the wiring is connected is the x and y directions (or in both the x and y directions).

FIG. 8 is an example of character information described by drawing data. The coordinates of character information can be defined as two diagonal points of a rectangular area in which characters are written, as a start point and an end point. Furthermore, it may be defined whether the direction in which the wiring is connected is the x and y directions (or in both the x and y directions).

FIG. 9 is an example of work support information that the management system 3 presents to the worker terminal 4. The worker checks the continuity of the circuit elements while looking at the drawing data, and inputs the confirmation results by handwriting on the worker terminal 4 for the parts where continuity has been confirmed. The management system 3 receives the handwritten data and compares it with the connection information. In this example, the connection information represents the connection relationship in the order of SIG1 => Wiring => Breaker A => Wiring AB => IC. When the operator inputs the result of checking continuity up to breaker A, the connection information indicates that the next step is to check continuity of wiring AB. Therefore, the management system 3 presents a message to that effect to the worker terminal 4. FIG. 9 is an example of the message.

<Embodiment 2>
FIG. 10 is an example in which an arrow line segment exists in a table in which drawing data is described. This example shows a connection relationship from terminal 1 connected to the arrow start point to terminal 2 connected to the arrow tip. It is desirable that such a connection relationship is also detected as a connection relationship between cells in the table. However, such arrow line segments within a table may be mistakenly recognized as table ruled lines. Therefore, in Embodiment 2 of the present invention, a configuration example for detecting an arrow line segment (a line segment having an arrowhead shape at one end) will be described.

FIG. 11 is a configuration diagram of the drawing processing apparatus 2 in the second embodiment. The drawing processing device 2 includes an arrow detection section 26 in addition to the configuration described in the first embodiment. The arrow detection unit 26 detects line segments that constitute arrows among the line segments detected in the drawing data. The connection information generation unit 25 is omitted for convenience of description.

FIG. 12 is a flowchart illustrating the procedure by which the arrow detection unit 26 detects an arrow. The arrow is composed of three line segments (A1A2, B1B2, C1C2) shown on the left side of FIG. Let α be the angle between line segment A1A2 and line segment B1B2. Each step in FIG. 12 will be explained below.

In S2-1, the arrow detection unit 26 identifies three line segments that have a common end point (the coordinates of the end points are the same). That is, it is determined whether the following conditions hold: (a) xA2=xB2=xC2; (b) xA2=xB2=xC2. If true, the three line segments are candidates for arrows.

In S2-2, the arrow detection unit 26 identifies the longest line among the three line segments. Specifically, |A2A1|, |B2B1|, and |C2C1| are compared.

In S2-3, the arrow detection unit 26 determines whether two line segments that are not the longest line segments have the same length. In the example of FIG. 12, it is determined whether |A2A1|=|B2B1| holds true. If true, the three line segments are candidates for arrows.

In S2-4, the arrow detection unit 26 determines whether the angle α formed by two line segments that are not the longest line segments is less than or equal to 90 degrees (that is, determines whether the arrow tip is an acute angle or not. do). If the angle is 90 degrees or less, it is considered to be the tip of an arrow, so those three line segments are candidates for the arrow. Depending on the shape of the arrowhead, if the angle between line segments A1A2 and C1C2 is less than 90 degrees, and the angle between line segments B1B2 and C1C2 is less than 90 degrees, it may be considered as an arrowhead. .

In S2-5, the arrow detection unit 26 determines that the other ends of the two line segments that are not the longest line segments (A1 and B1 in the example of FIG. 12) do not intersect with any other line segment. Check. If they do not intersect, the three line segments are identified as arrows.

FIG. 13 is a flowchart illustrating another procedure in which the arrow detection unit 26 detects an arrow. When the arrowhead is made up of a triangle, the arrowhead is made up of the three line segments that make up the triangle and the color that fills the inside of the triangle. Such an arrowhead can be decomposed into three line segments forming a triangle. The procedure for detecting an arrow is the same as that in FIG. 12 except for the third line segment newly added compared to the example in FIG. 12.

In S2-6, the arrow detection unit 26 detects that there is a line segment (that is, line segment A1B1) that is not the longest line segment and is in contact with both other ends of each of the two line segments (A1 and B1 in the example of FIG. 13). Determine whether or not. If the line segment exists, the line segment is excluded from the arrow determination process (S2-7). The rest is the same as in FIG. 12.

FIG. 14 shows an example in which the arrow is bent. In addition to the arrowhead, this arrow is composed of a line segment AB (1), a line segment BC (2), and a line segment CD (3). The starting point of this arrow is D, and the ending point is the arrowhead (A), so the connection direction is from the numerical value "1" in the cell to the numerical value "2" in another cell. It is desirable to be able to appropriately detect such arrows and connection directions.

FIG. 15 is a flowchart illustrating a procedure in which the arrow detection unit 26 detects a bent arrow as shown in FIG. This flowchart is executed after the longest line segment extending from the arrow tip and its apex is detected by executing the flowchart of FIG. 12 or 13. That is, it is for detecting line segment BC and line segment CD in FIG.

If there is another line segment that is connected to the longest line segment extending from the arrow tip (that is, in contact with the end point on the opposite side of the arrow tip), the arrow detection unit 26 detects the point (S2-8: Yes). The line segment is grouped together with the longest line segment (S2-9). For example, by grouping the line segments AB and BC in FIG. 14, the longest line segment becomes a bent line segment formed by the two line segments AB and BC, and the new end point becomes C. If there are line segments connected to the updated endpoints, they are grouped in the same way. The arrow detection unit 26 detects the direction of the arrow (direction from the starting point to the arrow tip) (S-10). The arrow detection unit 26 detects character information connected to each of the starting point and the arrow tip of the arrow (S2-11). The detection method is the same as S1-4. The connection information generation unit 25 stores the connection information describing the connection relationship extracted as described above in the drawing connection information DB 31 (S2-12).

FIG. 16 is an example in which links spanning pages of a spreadsheet describing drawing data are described by arrows. In this example, page P. From the information A of 1, a link to the No. 9 terminal of the device II1PZ37A with the sheet (page) name PZ37A is described by an arrow. Links that span such pages can also be extracted as connections using arrows. Crossing over pages can be identified by whether or not the starting point of the arrow represents a link from another page (whether or not the page number of the other page is written). The connection information generation unit 25 generates connection information that describes the connection relationship between pages. Other procedures are similar to each procedure in this embodiment.

In this embodiment, the table detection unit 23 may detect a table using line segments excluding the arrow detected by the arrow detection unit 26. Thereby, when an arrow exists in a table, the possibility of erroneously recognizing the arrow as a ruled line of the table can be reduced.

<Embodiment 3>
FIG. 17 is an example of a line segment connected to a table and an arrow further connected to the table. This arrow is provided with character information of the starting point of the arrow as attribute information of the line segment. In Embodiment 3 of the present invention, a configuration example for detecting attribute assignment using such an arrow will be described.

FIG. 18 is a configuration diagram of the drawing processing apparatus 2 in the third embodiment. In addition to the configuration described in the second embodiment, an attribute assigning section 27 is provided. The attribute assigning unit 27 assigns character information as shown in FIG. 17 as attribute information of the line segment. The connection information generation unit 25 describes the attribute information as part of the connection information. The other configurations are the same as in the second embodiment.

FIG. 19 is a flowchart illustrating the operation of the attribute assigning unit 27. The attribute assigning unit 27 determines whether the end point of the arrow detected by the arrow detecting unit 26 is within the table area (S3-1). If the arrow is within the weighing range, it is the same as the arrow described in Embodiment 2, so it is not included in this flowchart. The attribute assigning unit 27 determines whether the tip of the arrow is in contact with a line segment (S3-3). If they are in contact, character information at the arrow starting point is detected (S3-4). The attribute assigning unit 27 assigns the character information of the arrow starting point as the attribute information of the line segment connected to the arrow tip. The connection information generation unit 25 describes the attribute information as part of the connection information and stores it in the drawing connection information DB 31 (S3-5).

<About modifications of the present invention>
The present invention is not limited to the embodiments described above, and includes various modifications. For example, the above-described embodiments have been described in detail to explain the present invention in an easy-to-understand manner, and the present invention is not necessarily limited to having all the configurations described. Furthermore, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Furthermore, it is possible to add, delete, or replace some of the configurations of each embodiment with other configurations.

In the embodiments described above, each functional unit included in the drawing processing apparatus 2 can be configured by hardware such as a circuit device that implements the function, or software that implements the function can be configured by a CPU (Central Processing Unit) or the like. It can also be configured by being executed by a computing device.

In the above embodiments, connection relationships using line segments and arrows extending along the x direction have been illustrated, but the present invention is applicable even when the x and y directions are interchanged. In this case, the criteria for determining the x direction in each processing procedure may be replaced with those for the y direction. Such replacements are easy for those skilled in the art.

1: Work support system 2: Drawing processing device 21: Line segment information generation unit 22: Character information generation unit 23: Table detection unit 24: Line detection unit 25: Connection information generation unit 26: Arrow detection unit 27: Attribute assignment unit 3 :Management system

Claims (15)

A drawing processing device that processes drawing data,
a line detection unit that detects a straight line described by the drawing data;
a table detection unit that detects a table described by the drawing data;
a connection information generation unit that generates connection information describing the connection relationship by the straight line;
Equipped with
The table detection unit detects information written in the table,
The connection information generation unit includes:
the connection relationship by the straight line between the information described in the first cell in the table and the information described in the second cell in the table;
or
the connection relationship by the straight line between the information in the table and the information written outside the table;
identify at least one of the
The drawing processing device, wherein the connection information generation unit generates the connection information that describes the specified connection relationship. When one end of the straight line is on a ruled line of a cell in the table, the connection information generation unit generates the connection information indicating that the cell and the straight line are connected,
The connection information generation unit generates the connection information indicating that the straight line and the text information are connected when the text information is arranged within a predetermined distance from the other end corresponding to the one end,
The connection information generation unit generates the connection information indicating that the cells in the table are connected to the straight line, and that the straight line and the character information are connected. The drawing processing apparatus according to claim 1, wherein the connection information indicating that the text information is connected to the cell is generated. The line detection unit detects, as the straight line, a group of line segments connecting the first cell and the second cell outside the table,
The connection information generation unit generates the connection information indicating that the information described in the first cell and the information described in the second cell are connected by the line segment group. The drawing processing apparatus according to claim 1. The connection information generation unit generates the connection information indicating that the first cell and the straight line are connected when one end of the straight line is on a ruled line of the first cell,
When the other end corresponding to the one end is on a drawing symbol placed inside the second cell or is connected to character information, the connection information generating unit is configured to connect the straight line and the drawing symbol or the generating the connection information indicating that the straight line and the character information are connected;
The connection information generation unit generates the connection information indicating that the first cell and the straight line are connected, and that the straight line and the drawing symbol or the straight line and the character information are connected. According to claim 1, the connection information indicating that the information in the first cell and the drawing symbol or the information in the first cell and the character information are connected is generated. Drawing processing equipment. The table detection unit detects a first table and a second table described by the drawing data,
When one end of the straight line is on a ruled line of a first table cell in the first table and the other end of the straight line is on a ruled line of a second table cell in the second table, The drawing according to claim 1, wherein the connecting information indicating that the information described in the first table cell and the information described in the second table cell are connected is generated. Processing equipment. The drawing processing device further includes an arrow detection unit that detects an arrow formed by the straight line,
2. The connection information generation unit specifies the connection relationship between the information described by the first cell and the information described by the second cell by the arrow. drawing processing equipment. The arrow detection unit identifies the longest straight line among the three straight lines that have one end in common,
The arrow detection unit is configured such that two of the three straight lines excluding the longest straight line have the same length, and the angle between the longest straight line and each of the two straight lines is 90 degrees. and the other ends of the two straight lines do not intersect with each other straight line, it is determined that the three straight lines constitute the arrow; otherwise, the The drawing processing apparatus according to claim 6, wherein the drawing processing apparatus determines that the drawing is not an arrow. 8. The drawing processing apparatus according to claim 7, wherein, if there is a line segment connecting the other ends of the two straight lines, the arrow detection unit performs the determination excluding that line segment. . If there is another line segment connected to the starting point of the arrow, the arrow detection unit connects that line segment to the starting point of the arrow and considers it as a new starting point of the arrow. 7. The drawing processing apparatus according to claim 6, wherein the arrow is treated as being bent. The arrow detection unit specifies the direction of the arrow by treating the arrowhead of the arrow as the end point of the arrow,
The drawing processing apparatus according to claim 6, wherein the connection information generation section describes the connection relationship on the connection information according to the direction of the arrow specified by the arrow detection section. The arrow detection unit specifies the direction of the arrow by treating the arrowhead of the arrow as the end point of the arrow,
The connection information generation unit describes the connection relationship on the connection information according to the direction of the arrow specified by the arrow detection unit,
The drawing processing apparatus according to claim 9, wherein, when the other line segment exists, the arrow detection unit specifies a direction from the new starting point toward the arrowhead as the direction of the arrow. The drawing data has a first page and a second page,
The drawing processing device further includes an arrow detection unit that detects an arrow formed by the straight line,
The connection information generation unit is configured such that one end of the arrow is connected to information in the table arranged on the first page, and the other end is connected to information indicating a link from information in the second page. 2. The drawing processing apparatus according to claim 1, wherein if there is a link, the connection information indicating the connection relationship between the link destination information of the link and the information connected to the one end is generated. The drawing processing device further includes an arrow detection unit that detects an arrow formed by the straight line,
The table detection unit detects the table using the straight lines detected by the line detection unit excluding the arrow detected by the arrow detection unit. Drawing processing equipment. The drawing processing device further includes an arrow detection unit that detects an arrow formed by the straight line,
When one end of the arrow terminates on another straight line and the other end is connected to text information, the connection information generation unit assigns the text information as attribute information of the other straight line. The drawing processing apparatus according to claim 1, wherein the connection information is generated at the top. A drawing processing device according to claim 1,
a worker terminal that displays the drawing data;
a work support device that outputs work instructions to the worker terminal;
has
The work support device receives from the worker terminal a result of checking connection relationships between elements on the drawing data,
The work support device specifies the next element of the checked element on the drawing data according to the connection information, and sends the work instruction to check the connection relationship of the next element to the work support device. A work support system characterized by outputting to a user terminal.

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