JP4583476B2 - Design drawing processing apparatus and computer program - Google Patents

Description

  The present invention relates to a design drawing processing apparatus and computer program thereof for processing design drawing data for architecture, and more particularly to a design drawing processing apparatus and computer program thereof capable of handling design drawing data in a plurality of data formats.

  Many of design drawing processing apparatuses such as a device (see Patent Document 1) that generates a three-dimensional model of a design object from two-dimensional CAD data representing a two-dimensional design drawing, a CAD (Computer Aided Design) system, and the like are DXF. It supports reading of two-dimensional CAD data in a plurality of data formats such as a format, DWG format, and JWC format.

In the two-dimensional CAD data, a character string composed of one or a plurality of characters and a line are held in a distinguishable format. Therefore, the design drawing processing apparatus uses the character data and the line data included in the read two-dimensional CAD data. A design drawing composed of character strings and lines can be output on a screen or the like.
JP 2007-249900 A

  However, the design drawing includes a plurality of types of character strings having different meanings and roles, such as dimension values and member codes, and which character string is a dimension value depending on the process of the design drawing. It is necessary to recognize. In particular, in order to generate a three-dimensional model of a design object from two-dimensional CAD data, it is necessary to specify the size of the constituent members and the relative positional relationship between the constituent members. It is necessary to recognize it.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a design drawing processing apparatus and a computer program capable of recognizing a dimension value included in design drawing data.

  In order to solve the above-described problems, a design drawing processing apparatus according to the present invention includes a figure representing a shape of a structural member of a building, a dimensional line and a dimensional value related to the structural member, and a character string including one or more characters. Design drawing data configured to be distinguishable from lines, and dictionary data indicating one or more specific characters included in a character string excluding dimension values among character strings included in the design drawing data. A character string excluding dimension values is specified from the character string included in the design drawing data by comparing the storage means with the character in the character string included in the design drawing data and the character indicated by the dictionary data. Then, based on the dimension value recognized by the dimension value recognizing means, the dimension value recognizing means for recognizing a character string other than the specified character string among the character strings included in the design drawing data, Above From the lines included in the total drawing data and a dimension line recognition means for recognizing a dimension line corresponding to the dimension value.

  In the above invention, the dimension line recognizing means is based on the position and direction of the dimension value recognized by the dimension value recognizing means and the position and direction of the line included in the design drawing data. It is preferable that a dimension line corresponding to the dimension value is recognized from among the lines included in.

  In the said invention, the said memory | storage means has memorize | stored the said dictionary data which shows the character contained in the member code | symbol used in order to specify the structural member of a building, The said dimension value recognition means has said design drawing data A character string included in the design drawing data is identified by comparing the character in the character string included in the character string and the character indicated by the dictionary data to identify the member code among the character strings included in the design drawing data. Among these, it is preferable that a character string other than the specified member code is recognized as a dimension value.

  In the above invention, the design drawing processing apparatus further comprises dimension value selection means for selecting a dimension value to be associated with the dimension line from the dimension values recognized by the dimension value recognition means, and the dimension line recognition It is preferable that the means is configured to recognize a dimension line corresponding to the dimension value selected by the dimension value selecting means.

  In this case, the storage means stores a specific character included in a dimension value that is not associated with a dimension line, and the dimension value selection means stores the character included in the dimension value and the storage means. It is configured to recognize a dimension value including the specific character by comparing with the specific character, and to exclude the dimension value from the dimension value to be associated with the dimension line. preferable.

  In the said invention, it is preferable that the said design drawing processing apparatus is further provided with the object specific | specification means which specifies the object which the said dimension line points out based on the dimension line recognized by the said dimension line recognition means.

  In this case, the design drawing processing apparatus further includes a street recognizing unit for recognizing a street core among the lines included in the design drawing data, and the target specifying unit is terminated with two street cores. It is preferable that it is comprised so that between the said two cores may be specified as the object of the dimension line which exists.

  In this case, the core recognizing means is disposed between the first core recognizing means for recognizing the first core that is the core of the column and the two parallel first cores. It is preferable to include a second core recognizing unit that recognizes the second core.

  Further, in this case, whether or not the second core recognition means selects a line different from the first core and the dimension line, and is arranged so that the selected line intersects the dimension line. It is preferable that the second core is recognized by determining whether or not.

  The computer program of the present invention represents a design drawing of a building, and a dimension value is selected from character strings included in design drawing data configured to be able to distinguish a character string composed of one or more characters and a line. A computer comprising storage means for storing dictionary data indicating one or more specific characters included in a character string to be excluded is compared with a character in the character string included in the design drawing data and a character indicated by the dictionary data. The character string excluding the dimension value is specified from the character string included in the design drawing data, and the character string other than the specified character string is recognized as the dimension value among the character strings included in the design drawing data. And a dimension line recognition means for recognizing a dimension line corresponding to the dimension value from the design drawing data based on the dimension value recognized by the dimension value recognition means. That.

  According to the design drawing processing apparatus and the computer program of the present invention, it is possible to efficiently recognize the dimension values included in the design drawing data.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

(Embodiment)
In the present embodiment, two-dimensional CAD data of a building is read, and character strings (character data (ASCII code, JIS code, Shift-JIS code, EUC, Unicode, etc.) included in the two-dimensional CAD data are read. The character string corresponding to the member code used to identify the structural member of the building is identified from the set of the character and symbol data represented), and the character string other than the identified character string is used as dimension value data. It is a design drawing processing apparatus to be recognized.

[Configuration of design drawing processing device]
FIG. 1 is a block diagram showing a configuration of a design drawing processing apparatus according to an embodiment of the present invention. As shown in FIG. 1, the computer 1 a includes a main body 11, an image display unit 12, and an input unit 13. The main body 11 includes a CPU 11a, ROM 11b, RAM 11c, hard disk 11d, reading device 11e, input / output interface 11f, and image output interface 11h. The CPU 11a, ROM 11b, RAM 11c, hard disk 11d, reading device 11e, input / output interface 11f. The image output interface 11h is connected by a bus 11i.

  The CPU 11a can execute a computer program loaded in the RAM 11c. The computer 11a functions as the design drawing processing apparatus 1 by the CPU 11a executing a design drawing processing program 14a as described later.

  The ROM 11b is configured by a mask ROM, PROM, EPROM, EEPROM, or the like, and stores a computer program executed by the CPU 11a, data used for the same, and the like.

  The RAM 11c is configured by SRAM, DRAM, or the like. The RAM 11c is used to read the design drawing processing program 14a recorded on the hard disk 11d. Further, when the CPU 11a executes a computer program, it is used as a work area for the CPU 11a.

  The hard disk 11d is installed with various computer programs to be executed by the CPU 11a, such as an operating system and application programs, and data used for executing the computer programs. A design drawing processing program 14a to be described later is also installed in the hard disk 11d. The hard disk 11d stores two-dimensional CAD data 2 such as DXF format, DWG format, JWC format, and the like.

  The hard disk 11d stores a member code recognition dictionary 3. In the member code recognition dictionary 3, member codes used in the design drawings of buildings are registered. FIG. 2 is a diagram schematically showing the configuration of the member code recognition dictionary 3. As shown in FIG. 2, the member code recognition dictionary 3 includes a column code recognition dictionary 31 for recognizing a column code, a beam code recognition dictionary 32 for recognizing a beam code, and a slab code. A slab code recognition dictionary 33 for recognizing, a wall code recognition dictionary 34 for recognizing wall codes, a base code recognition dictionary 35 for recognizing base codes, and a pile code recognition A plurality of dictionaries corresponding to the type of member, such as a pile code recognition dictionary 36 for the purpose, are included. When the character string included in the design drawing data starts with a character registered in these member code recognition dictionaries 3, the member code is recognized by the member corresponding to the dictionary in which the character is registered. This is done by recognizing that it is a type code. For example, character data “C” and “P” are registered in the column code recognition dictionary 31. Therefore, the first character of the character string included in the design drawing data starting with “C” or “P” is recognized as a column code. Similarly, in the beam code recognition dictionary 32, character data “G”, “B”, “CG”, “CB”, “FG”, “FB”, “FCG”, and “FCB” are registered. Among the character strings included in the design drawing data, the first character string that starts with one of the registered character data is recognized as a beam code. If the first character or several characters of one character string match a plurality of character data registered in the dictionary 3, it is determined that the character data matches the character data having the larger number of characters. Is done. That is, in the character string starting with “CB”, the first character “C” matches the character “C” registered in the column code recognition dictionary 31, and the first two characters “CB”. Corresponds to “CB” which is a character registered in the beam code recognition dictionary 32. In this case, it is determined that the character string matches “CB” having a large number of characters, and the character string is recognized as indicating a beam code.

  The reading device 11e is configured by a flexible disk drive, a CD-ROM drive, a DVD-ROM drive, or the like, and can read a computer program or data recorded on the portable recording medium 14. The portable recording medium 14 stores a design drawing processing program 14a for causing the computer to function as a design drawing processing apparatus. The computer 1a reads the design drawing processing program 14a from the portable recording medium 14, The design drawing processing program 14a can be installed in the hard disk 11d.

  The design drawing processing program 14a is not only provided by the portable recording medium 14, but also from the external device communicatively connected to the computer 1a by an electric communication line (whether wired or wireless). It can also be provided through a communication line. For example, the design drawing processing program 14a may be stored in a hard disk of a server computer on the Internet, and the computer 1a may access the server computer to download the computer program and install it on the hard disk 11d. Is possible.

  The hard disk 11d is installed with a multitask operating system such as Windows (registered trademark) manufactured and sold by Microsoft Corporation. In the following description, it is assumed that the design drawing processing program 14a according to the present embodiment operates on the operating system.

  The input / output interface 11f is, for example, a serial interface such as USB, IEEE1394, or RS-232C, a parallel interface such as SCSI, IDE, or IEEE1284, and an analog interface including a D / A converter, an A / D converter, and the like. It is configured. An input unit 13 composed of a keyboard and a mouse is connected to the input / output interface 11f, and the user can input data to the computer 1a by using the input unit 13.

  The image output interface 11h is connected to the image display unit 12 constituted by an LCD, a CRT, or the like, and outputs a video signal corresponding to the image data given from the CPU 11a to the image display unit 12. The image display unit 12 displays an image (screen) according to the input video signal.

[Operation of design drawing processing device]
Next, the operation of the design drawing processing apparatus according to the present embodiment will be described. FIG. 3 is a flowchart showing a processing flow of the design drawing processing program according to the present embodiment. The computer 1a operates as follows by executing the design drawing processing program 14a. First, the CPU 11a reads the two-dimensional CAD data from the hard disk 11d (step S1). The two-dimensional CAD data is data in a format supported by the design drawing processing program 14a such as DXF format, DWG format, or JWC format. The CPU 11a determines the format of this data from the extension added to the file name, etc., recognizes the contents of the two-dimensional CAD data according to a rule corresponding to the format, and expands the data on the RAM 11c. This expanded data includes line data (line position, line direction, length, line type (solid line, broken line, etc.), line thickness, line color, etc. indicating the line in the design drawing. ) And character string data (character code, character string position, character string direction, character size, character thickness, character color, etc.). Here, it is assumed that the two-dimensional CAD data is input from the outside in advance and stored in the hard disk 11d. Further, the present invention is not limited to this. For example, two-dimensional CAD data recorded on a writable medium such as a flexible disk, a CD-R, or a DVD-R is read from the medium by the reading device 11e of these media. It is also possible to read. The CPU 11a displays the design drawing represented by the two-dimensional CAD data on the image display unit 12 in accordance with the two-dimensional CAD data read in this way (step S2). In the display of the design drawing at this time, the background (the paper surface of the design drawing) is white, and the lines and characters are black.

  Next, the CPU 11a detects a drawing area in the design drawing represented by the two-dimensional CAD data (step S3). Here, the drawing area refers to an area inside the drawing frame of the design drawing, excluding the title column.

  Next, the CPU 11a executes a dimension value recognition process (step S4), and recognizes whether or not all character strings existing in the drawing area are character strings indicating dimension values. This dimension value recognition process will be described in more detail. FIG. 4 is a flowchart showing the flow of the dimension value recognition process, and FIG. 5 is a diagram showing an example of the design drawing. First, the CPU 11a selects one character string data existing in the drawing area (step S401), and determines whether or not the character string is a member code (step S402). In the process of step S402, the member code recognition dictionary 3 stored in the hard disk 11d is read, and whether the character string data to be processed starts with a character registered in the member code recognition dictionary 3 or not. By determining whether or not this character string data represents a member code, and if it represents a member code, any of column, beam, slab, wall, base, pile, etc. It is determined whether it is the code | symbol of the kind of member. This will be specifically described with reference to FIG. For example, when the character string 41 in FIG. 5 is selected, the first character “G” of the character string 41 matches the character data “G” registered in the beam code recognition dictionary 32. . Therefore, the character string 41 “G1” is determined as a beam code. When the character string 42 in FIG. 5 is selected, the first character “3” of the character string 42 does not match the registered character of any dictionary included in the member code recognition dictionary 3. Therefore, the character string 42 of “3000” is determined not to be a member code.

  If the character string data is data indicating a member code (YES in step S402), the CPU 11a stores attribute data of the character string including information indicating the recognized type of member code in the RAM 11c (step S403). ). Further, the CPU 11a determines whether or not there is a frame (member code frame) surrounding the member code (step S404), and when the member code frame is detected (YES in step S404), the character string in the frame. And a line are detected (step S405). In step S404, if there is no member code frame surrounding the member code (NO in step S404), the CPU 11a moves the process to step S406. Next, the CPU 11a draws the member code in a predetermined color (blue in this embodiment) (step S406). In the process of step S406, if a frame exists, the member code, the member code frame, the character string and the line in the detected frame are drawn in blue, and if no frame is detected, only the member code is drawn. Is drawn in blue. Thereafter, the CPU 11a moves the process to step S408.

  The processing of steps S403 to S406 will be described using the example of FIG. When the character string 41 is selected, in step S403, the attribute data of the character string 41 including information indicating the beam code is stored in the RAM 11c. In step S404, the code frame 41a around G1 is detected. In step S405, the character strings 41b, 41c, 41d in the frame and the lines 41e, 41f in the frame are detected. Next, in step S406, the character string 41, the code frame 41a, the character strings 41b, 41c, 41d, and the lines 41e, 41f are drawn in blue. If the character string 43 is selected, the attribute data of the character string 43 including information indicating the column code is stored in the RAM 11c in step S403. In step S404, it is determined that there is no surrounding code frame. In step S406, the character string 43 of “C6” is drawn in blue.

  In step S402, when the character string data is not data indicating a member code (NO in step S402), the CPU 11a stores the attribute data of the character string including information indicating that it is a dimension value in the RAM 11c (step S402). S407). In the example described above, when the character string 42 is selected, the attribute data of the character string 42 of “3000” is stored in the RAM 11c as including information indicating that it is a dimension value. Next, the CPU 11a determines whether or not the above processing has been performed for all character string data in the drawing area (step S408). If unprocessed character string data exists (NO in step S408). Then, one unprocessed character string data existing in the drawing area is selected (step S409), and the process returns to step S402. In step S408, when the process is completed for all character string data in the drawing area (YES in step S408), the CPU 11a returns the process to the call address of the dimension value recognition process in the main routine.

  Next, the CPU 11a executes dimension line recognition processing (step S5). This dimension line recognition process will be described in more detail. FIG. 6 is a flowchart showing the flow of the dimension line recognition process. First, the CPU 11a selects one dimension value data (step S501), and determines whether or not the dimension value data indicates a dimension value to be associated with the dimension line (step S502). Here, the dimension value to be associated with the dimension line means a dimension value in which the dimension line to be associated exists, and excludes dimension values and the like located inside the member code frame. Specifically, “+”, “−”, and “±” are stored as characters included in dimension values that are not associated with dimension lines in the program code of the design drawing processing program 14a of the hard disk 11d. By comparing the selected dimension value with “+”, “−”, and “±”, the selected dimension value starts with “+”, “−”, or “±” If it is determined, it is not a dimension value to be associated with the dimension line. The dimension value located inside the member code frame is not a dimension value to be associated with the dimension line. Thus, when it is determined that the selected dimension value is not the dimension value to be associated with the dimension line (NO in step S502), the CPU 11a moves the process to step S506.

On the other hand, when it is determined in step S502 that the selected dimension value is a dimension value to be associated with the dimension line (YES in step S502), the CPU 11a determines the position stored in advance for the dimension value. A line that conforms to the rules of the relationship is detected as a dimension line (step S503). This process will be described more specifically. The following positional relationship rules are stored in the hard disk 11d.
(1) When the dimension value is horizontal (characters are lined up in the horizontal direction in the figure), a line existing below the dimension value and a horizontally long line within a predetermined distance from the dimension value is a dimension line. It is.
(2) When the dimension value is in the horizontal direction and there is no line that satisfies the condition of (1), a line that exists above the dimension value, and a horizontally long line within a predetermined distance range from the dimension value It is a dimension line.
(3) When the dimension value is in the vertical direction (characters are arranged in the vertical direction in the figure), a line that exists to the right of the dimension value, and a vertically long line within a predetermined distance from the dimension value is the dimension. Is a line.
(4) When the dimension value is in the vertical direction and there is no line that matches the condition of (3), the line is present on the left side of the dimension value, and is a vertically long line within a predetermined distance range from the dimension value. Is a dimension line.
The CPU 11a detects a line that matches the positional relationship rule with respect to the dimension value. In other words, when the dimension value is horizontal, the longitudinal direction is a horizontal line, and the line existing below the dimension value is preferentially detected. When the dimension value is vertical, the longitudinal direction Is a vertical line, and a line existing to the right of the dimension value is preferentially detected. When there is no line with the same longitudinal direction in the vicinity of the dimension value (within the specified distance range) in the direction to be detected preferentially, the opposite direction (if the dimension value is horizontal, it is more than the dimension value). When the dimension value is vertically upward, a line near the dimension value existing on the left side of the dimension value is detected. For example, in the design drawing shown in FIG. 5, when a dimension value of 42 is selected, this dimension value is in the vertical direction (characters are arranged in the vertical direction in the drawing). The line 42a that is closest to the character string 42 and to the right of the character string 42 is detected with the vertical direction) as the longitudinal direction. Further, when the dimension value 44 is selected, the dimension value is horizontal (characters are arranged in the horizontal direction in the figure), so the horizontal direction (left and right direction in the figure) is the longitudinal direction, and the dimension is the largest. A line 44 a close to the value 44 and below the character string 44 is detected.

  Next, the CPU 11a stores the attribute data of the line thus detected in the RAM 11c (step S504). At this time, the attribute data of the dimension line includes information indicating the dimension value, and is stored in association with the dimension value used for detecting the dimension line. In the above example, the attribute data of the line 42 a is stored in association with the dimension value 42, and the attribute data of the line 44 a is stored in association with the dimension value 44.

  Next, the CPU 11a draws the associated dimension value and dimension line in a predetermined color (red) (step S505). In the above example, the line 42a and the dimension value 42 are drawn in red, and the line 44a and the dimension value 44 are drawn in red. Furthermore, the CPU 11a determines whether or not the above processing has been performed on all dimension value data (step S506), and if unprocessed dimension value data exists (NO in step S506), the unprocessed data Is selected (step S507), and the process returns to step S502. If processing has been performed for all dimension value data in step S506 (YES in step S506), the process returns to the call address for the dimension line recognition process in the main routine.

  Next, the CPU 11a performs a core recognition process (step S6). The core recognition process includes a first core recognition process (step S61) and a second core recognition process (step S62). In the first core recognition process (step S61), a column core (hereinafter referred to as a first core) and a height direction reference line, which serve as a standard for defining dimensions, are recognized from lines in the design drawing. . The first core is marked with a core symbol (a character string such as “X1” and “Y1” is described as a symbol surrounded by a one-dot chain line) in the core diagram. Also in FIG. 5, the first core 45 is specified by the core symbol 45a in the core diagram. Also, the height direction reference line is given a hierarchical symbol (such as “1FL” for the first floor, “2FL” for the second floor, etc.) in the axis diagram. . Therefore, in the process of step S6, the CPU 11a detects the core symbol and the hierarchical symbol in the design drawing, and detects the line corresponding to the core symbol / hierarchical symbol so that the first central core and the height direction are detected. Recognize the reference line. In the process of step S6, attribute data including information indicating the first core or the height direction reference line is stored as the attribute data of the line recognized as the first core and the height direction reference line in the RAM 11c. The first core and the height direction reference line, and the corresponding core symbol and hierarchy symbol are drawn in a predetermined color (in this embodiment, green).

  After completing the first core recognition process, the CPU 11a executes the second core recognition process (step S62), and is different from the first core and has two parallel first cores. 2nd cores which are present between and parallel to the first cores are recognized from the design drawing. The position of the second core is defined with reference to the first core. Therefore, there are usually two types of second cores in the design drawing. The first type of second core is a second core whose position is defined directly from the first core, that is, a second core whose dimensions are specified from the first core. The second wick is located between the two second wicks whose positions are indirectly defined from the first wick, that is, between the two parallel second wicks, and the dimension from the second wick is This is the designated second core. FIG. 7 is a diagram illustrating an example of a part of a design drawing in which a second core is present. In the example shown in FIG. 7, there are three second cores 53, 54, 55 parallel to these first cores 51, 52 between two parallel first cores 51, 52. To do. The dimension of the second core 53 is specified from the first core 51. Similarly, the dimension of the second core 55 is specified from the first core 52. Accordingly, the second street cores 53 and 55 are the first type of second street cores. On the other hand, the dimension of the second core 54 is not specified from the first cores 51 and 52 but is specified from the second cores 53 and 55. Therefore, the second core 54 is a second type of second core.

  In addition, since the second core is a core of the member, the dimension of the member is defined based on the second core. For this reason, the condition of the second core is that it is orthogonal to the dimension line indicating the width of the member and the distribution dimension from that line (the dimension indicating the distance from the line to both ends of the member). To do. This will be described with reference to FIG. The second core 53 is a core of the wall 56. Therefore, the second street core 53 is orthogonal to the width dimension line 56 a of the wall 56, and the distribution dimensions 56 b and 56 c from the second street core 53 exist on both sides of the second street core 53. Similarly, the second cores 54 and 55 are each orthogonal to the width dimension line of the wall, and there are distribution dimension lines on both sides.

  Based on the characteristics of the second lead as described above, the second lead is recognized as follows in step S62. 8A and 8B are flowcharts showing the flow of the second core recognition process. First, the CPU 11a selects one first core (step S621), and detects a line parallel to the first core and whose dimension is designated from the first core (step S622). ). The processing in step S622 will be specifically described. First, one terminal symbol (FIG. 7) is placed on the first core or on a line extended from the first core (this line is considered as a dimension extension line). A dimension line having a black circle) is detected, and a line having the other terminal symbol of the dimension line is detected. The CPU 11a refers to the attribute data in the RAM 11c and determines whether or not the line detected in this way is the first core or the second core (step S623).

  If the detected line is not the first core in step S623 (NO in step S623), the CPU 11a determines that the line (hereinafter referred to as a second core candidate) is orthogonal to the member width dimension line. It is determined whether or not (step S624). When the second core candidate is orthogonal to the member width dimension line (YES in step S624), it is determined whether or not there is a pair of distribution dimension lines having the second core candidate as a base end. (Step S625). Specifically, in the process of step S625, one terminal symbol is a dimension line on the second core candidate line or an extension line thereof, and the member width dimension line in which the intersection is detected in step S624 is determined. Whether or not the same line as the indicated line (that is, one of the lines indicating the shape of the member) or a dimension line indicating the extension line of the other end symbol exists on both sides of the second core. Is determined. In step S625, when there is a pair of distribution dimension lines having the second core candidate as the base (YES in step S625), the second core is used as attribute data of the second core candidate line. The attribute data including the information indicating that is stored in the RAM 11c (step S626). Next, the CPU 11a draws the line recognized as the second core as described above in a predetermined color (green in the present embodiment) (step S627).

  On the other hand, when the second core candidate is the first core or the second core in step S623 (YES in step S623), there is no member width dimension line orthogonal to the second core candidate in step S624. (No in step S624) Or, in step S625, if there is no pair of distribution dimension lines with the second core candidate as the base (NO in step S625), the CPU 11a selects the selected first one It is determined whether or not all the lines whose dimensions are specified from the core have been detected (step S628). If there are undetected lines (NO in step S628), selection is made except for the lines that have already been detected. A line parallel to the first core that has been dimensioned from the first core that is specified is detected (step S629), and the process is skipped. Back to the-up S623. In addition, when the above processing is completed for all the lines that are dimensioned from the selected first core in step S628 and are parallel to the first core (YES in step S628), It is determined whether or not the above processing has been performed for all the first cores in the design drawing (step S630). If there is an unprocessed first core (NO in step S630), the unprocessed Is selected (step S631), and the process returns to step S622.

  In addition, when the CPU 11a has completed the above processing for all the first cores in the design drawing in step S630 (YES in step S630), the CPU 11a selects one second core. In step S632, a line parallel to the second core and whose dimension is designated from the first core is detected (step S633). Since the processing of steps S634 to S638 is the same as the processing of steps S623 to S627, the description thereof is omitted.

  If the second core candidate is the first core in step S634 (NO in step S634), or if there is no member width dimension line orthogonal to the second core candidate in step S635 (NO in step S635), Alternatively, in step S636, when there is no pair of distribution dimension lines having the second core candidate as the base end (NO in step S636), the CPU 11a is dimensioned from the selected second core. It is determined whether or not the above processing has been performed for all lines (step S639). If there is an unprocessed line (NO in step S639), an unprocessed line is detected (step S640). The process returns to step S634. In addition, when the above processing is completed for all the lines that are dimensioned from the selected second core in step S639 and are parallel to the second core (YES in step S639), It is determined whether or not the above processing has been performed for all second cores whose attribute data is stored in the RAM 11c (step S641). If there is an unprocessed second core (in step S641). NO), one of the unprocessed second cores is selected (step S642), and the process returns to step S633.

  If the CPU 11a has completed the above processing for all the second cores whose attribute data is stored in the RAM 11c in step S641 (YES in step S641), the CPU 11a performs the second process in the main routine. The process returns to the call address for the core recognition process.

  Next, the CPU 11a executes a through-core dimension / height direction reference line dimension recognition process (step S7). In this process, a dimension line indicating between the cores (a dimension line having a terminal symbol on the two cores or an extension line thereof) and a dimension line indicating between the height direction reference lines are recognized. As the attribute data of the dimension line, attribute data indicating that the dimension line is between the cores or the dimension line between the height direction reference lines is stored in the RAM 11c.

  Next, the CPU 11a performs dimension extension line recognition processing (step S8). In this process, a line that overlaps the terminal symbol of the dimension line (that is, the terminal symbol of the dimension line exists on the line) is detected, the line type of the line is a solid line, and the line By determining that another line parallel to the line exists on the extension, it is determined whether or not the line is a dimension extension line. The recognized dimension extension line is associated with the dimension line so that the recognized dimension extension line is associated with the dimension line (for example, the attribute data includes information specifying the dimension line). It is stored in the RAM 11c.

  Next, the CPU 11a recognizes the direction of the recognized dimension extension line (step S9). In this process, it is determined which end of the extension line is away from the position of the terminal symbol of the dimension line, and the direction of the extension line is changed from the terminal symbol to the end point away from the terminal symbol. It is recognized that the direction is heading. Further, the CPU 11a executes an object recognition process (step S10). In this object recognition processing, in the case of a dimension line having an associated dimension extension line, the dimension line without the dimension extension line is based on the direction of the dimension line extension line and the line existing on the extension of the dimension extension line. In the case of, based on the line overlapping the terminal symbol of the dimension line, the object (member) corresponding to the dimension is recognized. In this process, the dimension value is associated with the target object by adding information identifying the corresponding recognized target object to the attribute data of the dimension value. Thereafter, the CPU 11a ends the process.

  As a result of processing the design drawing data as described above, on the display screen of the image display unit 12, the dimension value and the dimension line are drawn in red, the member code is drawn in blue, the core and the height direction reference A design drawing in which the line is drawn in green is displayed. Therefore, the operator can easily distinguish which character string is the dimension value or the member code, and can easily distinguish the core from the dimension line. . Also, in order to recognize the dimension value and display the dimension value so that it can be distinguished from other characters, it is necessary to check whether there is no omission of the dimension value at the location where the dimension value should be described or whether there is a contradiction between the dimension values The operator can easily check.

(Other embodiments)
In the design drawing processed as described above, the dimension value and the member code are distinguished, and the target indicated by the dimension value is specified. Therefore, the design drawing processing apparatus 1 can also be configured to generate a virtual three-dimensional model of a building by calculation of the CPU 11a from the relationship between the dimension value and the target after performing the above processing. In addition, when the operator performs an operation to correct or change the position or shape of the member, the design drawing processing apparatus 1 is set so that the dimension value defining the position or shape of the member is automatically corrected. By configuring, the design drawing processing apparatus 1 may be used as a two-dimensional CAD system.

  In the above-described embodiment, in the second core recognition process in step S62, one first or second core is selected, and the dimension is designated from the first core or the second core. The second line core candidate is used as the second line core candidate, and the second line core candidate that satisfies the requirements for the second line core is detected. However, the present invention is not limited to this. A set of the first street cores is selected, and a line parallel to the two first street cores and between the two first street cores is set as a second street core candidate, It is good also as a structure which detects what satisfy | fills the requirements of a 2nd street core from the street core candidates.

  In the above-described embodiment, the configuration in which the computer 11a of one computer 1a executes the design drawing processing program 14a to cause the computer 1a to function as the design drawing processing apparatus 1 has been described. However, the present invention is not limited thereto. Instead, the design drawing processing apparatus can be configured by a dedicated hardware circuit for executing substantially the same processing as the design drawing processing program 14a.

  In the above-described embodiment, the configuration in which all the processes of the design drawing processing program are executed by the single design drawing processing apparatus 1 has been described. However, the present invention is not limited to this. A distributed system in which processing similar to a program is executed by a plurality of devices (computers) in a distributed manner can be used.

  In the above embodiment, the two-dimensional CAD data 2 and the member code recognition dictionary 3 are stored in the hard disk 11d. However, the present invention is not limited to this. As another embodiment, a configuration may be adopted in which a plurality of hard disks are provided in the apparatus, and the two-dimensional CAD data 2 and the member code recognition dictionary 3 are separately stored in different hard disks. Further, the design drawing processing apparatus 1 is connected to another apparatus through a communication network such as the Internet, and either or both of the two-dimensional CAD data 2 and the member code recognition dictionary 3 are stored in a storage device such as a hard disk of the other apparatus. It is also possible to have a configuration in which one or both of the two-dimensional CAD data 2 and the member code recognition dictionary 3 is transmitted to the design drawing processing apparatus 1 according to the request of the design drawing processing apparatus 1.

  According to the above-described design drawing processing apparatus, the character string other than the dimension value included in the two-dimensional CAD data, that is, the member code is recognized, and the character string excluding the member code is recognized as the dimension value. Since the member code starts with a letter for specifying the type of member ("C" for a column, "G", "B", etc. for a beam), the first one to several letters are unique to the member code. It is possible to easily determine whether or not it is a member code by determining whether or not it matches the character. Therefore, it is possible to recognize the dimension value efficiently and accurately by recognizing the member code that can be easily recognized in this way.

  In the above embodiment, a character string other than the dimension value included in the two-dimensional CAD data is used as the member code, and the member code is specified among the character strings included in the two-dimensional CAD data. Although a configuration has been described in which character strings other than columns are recognized as dimension values, the present invention is not limited to this. As another embodiment, the character string other than the dimension value included in the two-dimensional CAD data may include the character string in the legend in the design drawing and / or the character string in the remarks in the design drawing. Good. In this case, dictionary data for recognizing the character string of the legend and / or dictionary data for recognizing the character string in the special notes are stored in the hard disk 11d, and the character string included in the two-dimensional CAD data Are compared with the characters registered in the dictionary data, whereby the member code, the character string in the legend, and / or the character string in the special notes are recognized. Such a member code, a character string in the legend, and / or a character string other than the character string in the special notes is recognized as a dimension value. In a design drawing, a room name assigned to a building room may be written in the corresponding room area. In such a case, the character string of the room name in the design drawing may be included in a character string other than the dimension value included in the two-dimensional CAD data. Moreover, the character string containing Japanese in a design drawing is not a dimension value. For this reason, when a Japanese character (at least one of kanji, hiragana, and katakana) is included in the character string included in the two-dimensional CAD data, the character string is a character string other than the dimension value. It is also possible to identify and character string other than that as a dimension value. Further, not only Japanese but also a character string including alphabets may be specified as a character string other than the dimension value, and the other character string may be recognized as the dimension value.

  In the design drawing, a dimension line corresponding to the dimension value exists at a position near the dimension value. In addition, the relationship between the direction of the dimension value (vertical or horizontal) and the longitudinal direction of the dimension line (vertical or horizontal), and the lower side of the dimension value (lower side in the case of horizontal dimension values) In the case of the vertical dimension value, there is a relationship that a dimension line corresponding to the right side) exists. Therefore, by utilizing the relationship between such a dimension value and the dimension line corresponding to the dimension value, the corresponding dimension line can be easily selected from the direction and position of the dimension value.

  In addition, it is judged whether there is no mistake in the combination of the dimension value and the dimension line in relation to other dimensions, and when it is judged that there is no mistake, the combination of the dimension value and the dimension line is determined. Also good. For example, the dimension value 44 in FIG. 5 is a dimension value corresponding to one dimension line 44 a obtained by dividing the dimension line 47 a between the cores 45 and 46 by the wall core 48. Therefore, the combined length of the dimension line 44a and the other dimension line 49a is equal to the length of the dimension line 47a between the cores, and the dimension value 49 (“1500”) and the dimension value 44 (1500) Must be equal to the dimension value 47 ("6000") between the lower side cores. In the case of FIG. 5, this condition is satisfied. Therefore, when the combination of the center line dimension line 47a and the dimension value 47 is determined, and the combination of the dimension line 49a and the dimension value 49 is determined, the dimension line corresponding to the dimension value 44 is displayed. At the time of detection, whether or not the above condition is satisfied is verified by the dimension line 44a. If the condition is satisfied, the combination of the dimension line 44a and the dimension value 44 is determined. By doing so, it is possible to detect a mistake in description of the dimension value or the dimension line, and it is possible to prevent an error from occurring in the combination of the dimension line and the dimension value.

  In addition, dimension values included in the design drawing include corresponding dimension lines such as dimension values starting from “+”, “−”, and “±” signs, and dimension values inside the member code frame. Some do not exist. In this embodiment, as described above, the feature of the dimension value that does not have the corresponding dimension line is used to recognize the dimension value that should not be associated with the dimension line, and other dimension values are associated with the dimension line. It is configured to be recognized as a dimension value to be attached. Accordingly, it is possible to prevent erroneous recognition such that a dimension value that should not be associated with a dimension line is associated with a line that is not a dimension line.

  Further, when the dimension line has a dimension extension line, the core, the height direction reference line, or the outline of the object exists on the extension line of the dimension line. If the dimension line does not have a dimension extension line, both ends of the dimension line (both terminal symbols) are on the target indicated by the dimension line (contour line, height direction reference line, or outline of member, etc.) Exists. In the present embodiment, by utilizing such a property of the dimension line, the dimension line between the cores and the dimension line between the height direction reference lines are recognized, and the object indicated by the dimension line is recognized. The configuration. Thereby, it becomes possible to easily specify the target indicated by the dimension line.

  The design drawing processing apparatus and computer program of the present invention are useful as a design drawing processing apparatus capable of handling design drawing data in a plurality of data formats, a computer program thereof, and the like.

The block diagram which shows the structure of the design drawing processing apparatus which concerns on embodiment of this invention. The figure which shows typically the structure of the dictionary for member code recognition. The flowchart which shows the flow of a process of the design drawing processing program which concerns on embodiment of this invention. The flowchart which shows the flow of a dimension value recognition process. The figure which shows an example of a design drawing. The flowchart which shows the flow of a dimension line recognition process. The figure which shows the example of a part of design drawing in which a 2nd core exists. The flowchart which shows the flow of the first half part of a 2nd street core recognition process. The flowchart which shows the flow of the second half part of a 2nd street core recognition process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Design drawing processing apparatus 1a Computer 11 Main body 11a CPU
11c RAM
11d Hard disk 11e Reading device 12 Image display unit 13 Input unit 14a Design drawing processing program 2 Two-dimensional CAD data 3 Member code recognition dictionary 31 Column code recognition dictionary 32 Beam code recognition dictionary 33 Slab code recognition dictionary 34 Wall code recognition Dictionary 35 Base code recognition dictionary 36 Pile code recognition dictionary 41 Member code 41a Code frame 41b, 41c, 41d, Character string 41e, 41f Line 42 Dimension value 42a Dimension line 51, 52 First core 53, 54, 55 2nd core 56a Width dimension line 56b, 56c Distribution dimension

Claims (10)

Design drawing data including a figure representing the shape of a component of a building, a dimension line and a dimension value related to the component, and configured to be able to distinguish a character string consisting of one or more characters and a line, and design drawing data Storage means for storing dictionary data indicating one or more specific characters included in the character string excluding the dimension value among the character strings included in
The character in the character string included in the design drawing data is compared with the character indicated by the dictionary data, and the character string excluding the dimension value is specified from the character string included in the design drawing data, and the design Dimension value recognition means for recognizing a character string other than the specified character string as a dimension value among the character strings included in the drawing data;
A design drawing processing apparatus comprising: dimension line recognition means for recognizing a dimension line corresponding to the dimension value from lines included in the design drawing data based on the dimension value recognized by the dimension value recognition means.   The dimension line recognizing unit is configured to detect the line included in the design drawing data based on the position and orientation of the dimension value recognized by the dimension value recognizing unit and the position and direction of the line included in the design drawing data. The design drawing processing apparatus according to claim 1, configured to recognize a dimension line corresponding to the dimension value from the inside. The storage means stores the dictionary data indicating characters included in a member code used for specifying a structural member of a building,
The dimension value recognizing means compares the character in the character string included in the design drawing data with the character indicated by the dictionary data, and identifies the member code in the character string included in the design drawing data. And the design drawing processing apparatus of Claim 1 or 2 comprised so that character strings other than the specified member code | symbol may be recognized as a dimension value among the character strings contained in the said design drawing data. A dimension value selecting means for selecting a dimension value to be associated with the dimension line from the dimension values recognized by the dimension value recognizing means;
4. The design drawing processing apparatus according to claim 1, wherein the dimension line recognizing unit is configured to recognize a dimension line corresponding to the dimension value selected by the dimension value selecting unit. The storage means stores a specific character included in a dimension value that is not associated with a dimension line,
The dimension value selection unit recognizes a dimension value including the specific character by comparing the character included in the dimension value with the specific character stored in the storage unit, The design drawing processing apparatus according to claim 4, configured to be excluded from a dimension value to be associated with a dimension line.   The design drawing processing apparatus according to claim 1, further comprising: a target specifying unit that specifies a target indicated by the dimension line based on the dimension line recognized by the dimension line recognition unit. Of the lines included in the design drawing data, further comprising a street recognition means for recognizing a street core,
The design drawing processing apparatus according to claim 6, wherein the target specifying unit is configured to specify a space between the two cores as a target of a dimension line terminated at the two cores. The core recognizing means is
First core recognizing means for recognizing a first core that is a column core;
The design drawing processing apparatus according to claim 7, further comprising: a second core recognizing unit that recognizes a second core disposed between the two parallel first cores.   The second core recognizing means selects a line different from the first core and the dimension line, and determines whether or not the selected line is arranged to intersect the dimension line. The design drawing processing device according to claim 8, wherein the design drawing processing device is configured to recognize a second core. 1 represents a design drawing of a building and is included in a character string excluding a dimension value among character strings included in design drawing data configured to be able to distinguish a character string composed of one or a plurality of characters and a line. Or a computer comprising storage means for storing dictionary data indicating a plurality of specific characters,
The character in the character string included in the design drawing data is compared with the character indicated by the dictionary data, and the character string excluding the dimension value is specified among the character strings included in the design drawing data. Dimension value recognition means for recognizing a character string other than the specified character string as a dimension value among character strings included in the data,
A computer program for functioning as dimension line recognition means for recognizing a dimension line corresponding to the dimension value from the design drawing data based on the dimension value recognized by the dimension value recognition means.

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