JP3259981B2 - Partial correction system for graphic data and method for partial correction of graphic data - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to partial correction of graphic data.
For example, regarding the system and how to partially correct the figure data
If there are any areas such as road boundaries in arbitrary areas, gas pipes, water pipes, etc.
Corresponding figure when changing existing drawing showing setting line
Correction processing of data, screen display of the existing drawing and change
Execute based on paper drawings (such as ready-made drawings) describing the contents
To do

2. Description of the Related Art In recent years, a computer has been constructed which constructs a graphic database comprising equipment data and map data indicating a pipeline network such as a gas pipe and a water pipe, extracts necessary graphic data from the graphic database, and displays a drawing of a desired area. Mapping is widely used, and the present invention is directed to a case where a part of such a created graphic database is corrected.

Computer mapping has already been used in various fields such as utility management, road management, housing management and administrative management, and shows the state of burial of underground objects such as gas pipes, water pipes, communication pipes, and power pipes. , A road map and a graphic database for a drawing showing the arrangement state of real estate and buildings are prepared, and the present invention is used for such various graphic databases.

[0004]

2. Description of the Related Art FIG. 8 is an explanatory view showing an outline of a general computer mapping system, in which reference numeral 20 denotes a host computer, and reference numeral 21 denotes a graphic data storing a graphic database (map database and facility database). File, 22 is a large-capacity storage device having a storage area for an application program for creating and modifying graphic data and a work area 26, 23 is a data input unit such as a keyboard, and 24 is a graphic display or the like. Display, 25
Indicates a digitizer.

[0005] Here, the figure data is created by attaching a drawing sheet describing a road and a conduit network for each region in a predetermined range to the digitizer 25, and by using characteristic points (inflection points and intersections) on the lines indicating roads and the like in this drawing. And the like, and input the respective coordinates by operating the cursor by operating the data input unit 23 and the menu function of the digitizer 25 (solid line, broken line, half line). This is performed by inputting attribute data (attribute code) indicating a symbol code such as a circle or a valve. As the size of the predetermined range, for example, a rectangular area of 350 m × 500 m is used, and figure data for each rectangular area is given a drawing number for identification, and is individually stored in the figure data file 21. Have been.

The data format of this graphic data is as follows:
For example, as shown in FIG.
As a three-dimensional data array format, the "x-coordinate and y-coordinate of the start point and the end point of the line segment,"
In addition, a "line type tag" as attribute data is stored in the third area, respectively (digital mapping, supervised by GSI, published by Kashima Shuppan, page 44).

The graphic data created in this way often requires a partial correction due to a subsequent change in road conditions or a change in the conduit network. In such a case, the graphic data shown in FIG. A work plan is created.

FIG. 36 is a paper drawing created by actually surveying the state of the change of the conduit network or the like at the site.
And such as the distance L ₁ ~L ₄ and orientation from the reference point P ₁ to P _4, such as public-private boundary stakes to the start point S and end point E of the correction target line is marked, and also scale to increase the accuracy of the information contained in 1 Values such as / 300 and 1/250 are used.

Next, the finished drawing 36 is converted to a paper drawing 37 to be corrected.
Figure 38 below for the correction input attached to the
12), the graphic data is partially corrected, and the procedure at that time is as shown in FIG.

That is, the graphic data in the area to be corrected is taken out from the base of the graphic data file 21 based on the drawing number and displayed on the graphic display 24 as the drawing before correction. /
Print out at 500 and create the paper drawing 37 to be corrected. ′ Created based on the survey at the site to be corrected,
Reduce the scale of the ready-made drawing 36 of 1/300 or 1/250 to 1/500. The reduced finished drawing 36 is attached to the correction target paper drawing 37 obtained in the 'step' so that the positional relationship between the two is matched, thereby creating a correction input lower drawing 38. ′
This correction input lower figure 38 is set in the digitizer 25, and points 45 to 48 at the four corners are input to obtain the respective position coordinates. ′ Based on these position coordinates, the digitizer 25
The conversion parameters for correcting the inclination of the correction input lower diagram 38 in FIG. 'The feature points of the part to be deleted 39 and the new line 40 of the finished figure 36 attached to the digitizer 25 are sequentially input. If the new line is a new additional line, there is no partial line to be deleted. 'A correction operation is performed on the input coordinate data using the conversion parameters.
'Correct the figure data using the coordinate data after this correction operation. By the same procedure, the change of the conduit network caused by the construction and the like is reflected in the graphic database.

Here, the graphic data stored in the graphic data file 21 indicates the actual distance at the site.
Therefore, the scale of the correction target paper drawing 37 to be printed out in step 'can be set to an arbitrary value.
Although it is desirable to omit the reduction processing in the above, the reduced scale of 1/500 is used due to the restriction of the size of the digitizer 25 for pasting the lower figure 38 for correction input.

The calculation and use of the conversion parameters in steps 'and' are described in detail in Japanese Patent Application Laid-Open No. Hei 1-320579 filed by the present applicant. This is to reduce errors in the input coordinate data based on the distortion of the lower part shown in FIG. 38 itself due to humidity change and the like and the inclination of the lower part shown in FIG.

As a method of correcting the graphic data in the step ', for example, as shown in Japanese Patent Application No. Hei. There is a method of setting attribute data of a feature point as a background color display code, a jump code, a final feature point code, or the like.

[0014]

As described above, in the conventional method of partially correcting graphic data, a pattern diagram in which original data for correction processing is described is once reduced, and the reduced size is calculated. The method of creating a lower figure for correction input by pasting the pattern drawing to the correction paper drawing of the area to be corrected is taken, so it is troublesome to input processing with the digitizer, and furthermore it is necessary to reduce processing with accuracy can plots itself is lowered, also the original de - the distance L ₁ ~L ₄ is a part of the motor there was a substantial problem that has not been utilized.

Therefore, in the present invention, a paper drawing is used as an example.
Local created based on surveying in situ correction target site
Using a can-type view, before correction drawings to be modified portion is in the use of the image to be displayed on a graphic display, for example, the previous original de - Ya start of using the data L ₁ ~L ₄ are correction target line Specify the end point etc. on this screen,
Then the position coordinates of the specific point, the in possible plots
By calculating the correspondence between the starting point and the end point of the line to be corrected, for example , with the position coordinates on the digitizer, the drawing before correction on the screen and the ready-made drawing are practically pasted together, and the graphic data is obtained. It is an object of the present invention to make the correction process simple and accurate.

[0016]

FIG. 1 is a block diagram showing the principle of the present invention. In the figure, reference numeral 1 denotes a graphic database, which is composed of map data and equipment data indicating a pipe network such as a gas pipe. 2 is a display screen,
First, an uncorrected drawing of a portion to be corrected based on the graphic data extracted from the graphic database 1 is displayed. 3
Is a paper drawing (made-in-place drawing), which is created based on the survey at the site to be corrected.
End point E, deleted portion D, newly input new line I, reference points P _{1 to} P ₄ , and start point S and end point E from these reference points
The distances L _{1 to} L ₄ to them are described. Reference numeral 4 denotes a digitizer, which is used to specify the characteristic point C on the new line I by pasting the finished figure 3 by a cursor operation and input the position coordinates of the point on the digitizer. The "feature point" used in this specification is a point selected to represent an arbitrary line, and is typically an end point, an inflection point, an intersection, or an intermediate point when the line is long. In FIG. 1, points S, E and C are treated as feature points. Reference numeral 5 denotes an application program which specifies and displays a starting point S 'and an ending point E' on the display screen 2 corresponding to the starting point S and the ending point E of the finished drawing 3 and a digitizer for each feature point. Is converted into position coordinates in the figure database (position coordinates represented by the figure data itself), for example, database coordinates in the area indicated by the drawing to be corrected, and the figure data is converted using the converted position coordinates. Processing to correct some of the data.

Then, the application program 5
Reads the existing graphic data of the drawing to be corrected from the graphic data file 1 by using the drawing number and the like, and proceeds to the next step. By using this graphic data, the drawing before correction of the correction target portion is shown on the display screen 2 and the process proceeds to the next step. The position coordinates (X ₁ , Y ₁ ) and (X ₂ , Y ₂ ) in the graphic database for the start point S ′ and the end point E ′ on the display screen 2 specified by the cursor operation on the digitizer are obtained. Proceed to step. By inputting the starting point S and the ending point E on the correction target line J of the finished figure 3 attached to the digitizer 4 by cursor operation or the like, the position coordinates (x ₁ , y ₁ ) of each point on the digitizer and ( x ₂ , y ₂ ) and go to the next step. By using the position coordinates (X ₁ , Y ₁ ) and (X ₂ , Y ₂ ) and the position coordinates (x ₁ , y ₁ ) and (x ₂ , y ₂ ), the conversion constant a between the two position coordinates and θ is determined and the process proceeds to the next step (FIG. 2)
reference). By inputting a feature point C on the correction target line J of the finished figure 3 attached to the digitizer 4 by a cursor operation or the like, the position coordinates (x, y) of the input point on the digitizer are obtained. Proceed to step. By using the conversion constants a and θ obtained earlier, the position coordinates (x, y) are converted into the position coordinates (X, y) in the graphic database.
Y), the corresponding part of the existing graphic data is corrected at the position coordinates (X, Y), and the process proceeds to the next step.
It is determined whether or not the correction processing has been completed for all the feature points C on the correction target line J of the ready-made figure 3 and “YES”.
In the case of, a series of processing ends, and in the case of "NO", the process returns to the step. Thus, the graphic data is partially corrected.

Here, the conversion constants a and θ in the step and the conversion formula from the position coordinates (x, y) to the position coordinates (X, Y) in the step are derived as shown in FIG. The derivation is performed by rotating the initial position coordinates (x, y) and the position coordinates (X, Y) in parallel so that their origins become the S point and the S 'point, respectively, and then rotating the two coordinates. It is what it was.

[0019]

According to the present invention, when a work is performed in a certain area and it is necessary to correct a part of the existing graphic data, a paper drawing is used as a correction target drawing as in the prior art. Instead, a display screen 2 such as a graphic display is used, and a finished model 3 created based on the survey at the site to be corrected is used without being reduced.

The above-mentioned conversion constants a and θ are used as parameters for bringing the finished drawing 3 of the digitizer 4 into a state of being substantially adhered to the display screen 2 as the drawing to be corrected.

The position coordinates (x, y) are converted from the position coordinates (x, y) using the conversion constants to obtain the position of the characteristic point C on the correction target line J in the finished figure 3 as graphic data. The coordinates are obtained in such a manner that the inclination when setting the finished figure 3 on the digitizer 4 and the overall expansion and contraction of the finished figure 3 itself are all compensated.

The starting point S 'and the ending point E' on the display screen 2 in the step are specified by selecting the feature point by operating the cursor with the digitizer 4 if the point is originally a feature point. Done.

If the preceding start point S 'and end point E' are not feature points, the reference point P ₁ 'on the display screen 2 is used.
... P ₄ ′ are first specified by operating the cursor on the digitizer 4, and then the distances L _{1 to} L
_When a value of ₄ is input from a keyboard or the like, the application program causes the distance L ₁ to
By obtaining the intersection between the formula that represents the formula and correction target line J 'representing a circle corresponding values were a radius of L _4, the display screen 2
The start point S 'and the end point E' are specified. In this case, it is necessary to specify the correction target line J 'on the display screen 2 in advance.

[0024]

An embodiment of the present invention will be described with reference to FIGS. Here, FIG. 3 is an explanatory diagram showing a procedure when correcting equipment data such as a gas pipe. FIG. 4 is an explanatory diagram showing a display screen for the entire drawing to be corrected. FIG.
FIG. 4 is an explanatory diagram showing an enlarged display screen of a correction target portion.
FIG. 6 is an explanatory diagram showing a state when the start point S ′ and the end point E ′ are specified on the enlarged display screen. FIG. 7 is an explanatory diagram showing an enlarged display screen at the time when the facility data correction process has been completed.

The procedure for correcting the equipment data shown in FIG. 3 is as follows. It should be noted that the hardware itself used for this correction process is substantially the same as the conventional one, and the finished drawings will be described using the same ones as shown above (see FIGS. 8 and 10). (1) Using the drawing number of the drawing to be corrected as a search key, the graphic data read from the graphic data file 21 is used as a work area 26.
And proceed to the next step. (2) The drawing based on the graphic data of the work area 26 is displayed on the graphic display 24, and the process proceeds to the next step (see FIG. 4). (3) By specifying the points A and B at the corners of the correction target portion 10 on the display screen by operating the cursor of the digitizer 25, only the graphic data related to the correction target portion 10 is selected and this portion is enlarged and displayed. Then, the process proceeds to the next step (see FIG. 5). (4) The reference points P ₁ ′ to P ₄ ′ on the enlarged display screen are specified by a method [0027] to be described later, and the coordinate data thereof is defined as a work area.
22 and proceed to the next step. (5) Input the values of the distances L _{1 to} L ₄ from each reference point to the start point S or the end point E from the keyboard shown in FIG. 36 and use the method described in [0023] above. By specifying the start point S 'and the end point E' on the display screen,
The position coordinates of each point in the graphic database are obtained, and the process proceeds to the next step (see FIG. 6). (6) Attach the finished drawing 36 to the digitizer 25 and proceed to the next step. (7) The starting point S and the ending point E on the finished figure 36 are specified by the cursor operation to input the position coordinates on each digitizer, and the process proceeds to the next step. (8) The position coordinates in the figure database of each of the starting point S 'and the ending point E' obtained in step (5) and step (7)
The conversion constants a and θ between the start point S and the end point E obtained on the position coordinates on the digitizer are obtained, and the process proceeds to the next step (see FIG. 2). (9) The equipment data indicating the line between the start point S 'and the end point E' on the display screen is deleted from the work area, and the process proceeds to the next step. (10) The feature points between the starting point S and the ending point E on the finished pattern 36 are specified by the cursor operation in order from the one closest to the starting point S, and the position coordinates on the digitizer are input. Proceed to. (11) Using the conversion constants a and θ, convert the position coordinates into position coordinates in the graphic database, store the converted position coordinates in the work area 26, and draw a line up to the position coordinates on the screen. And proceed to the next step. (12) It is determined whether or not the correction processing has been completed for all the feature points between the start point S and the end point E on the work pattern diagram 36,
If “YES”, proceed to the next step, and if “NO”, return to step (10). (13) In step (11), the data stored in the work area 26 is taken out, stored in the graphic data file 21, and a series of processing ends.

Here, the portion to be corrected in step (3)
As a method for efficiently selecting only the graphic data related to No. 10, Japanese Patent Application No. Hei 3-3010 filed earlier by the present applicant.
No. 59 and Japanese Patent Application No. 4-72953.

In step (4), the reference points P ₁ ′ to
As a method of specifying P ₄ ′, a point considered to be a reference point on the display screen is input by operating the cursor of the digitizer 25 while referring to the contents of the finished pattern diagram 36, and the application program receiving the input data receives the input data. This is performed by obtaining coordinate data in the vicinity of the input data from the graphic data in the work area 26 and newly storing the coordinate data in the work area 26 as reference point data. The reference point data newly stored in the work area 26 is sent to the graphic display 24 to perform processing for changing the color of the corresponding point on the display screen. The positions of points P ₁ ′ to P ₄ ′ can be confirmed.

In specifying the starting point S 'and the ending point E' in step (5), if two corresponding points are obtained, an application program for obtaining an intermediate point between the two may be used. The operator may select either point while looking at the display screen.

Further, in steps (9) and (11), the word
As a method for deleting the equipment data in the work area 26 and storing new equipment data in the work area 26, the method described in [001] is used.
3].

The order between the steps of the correction procedure used in the present invention is as follows: "display of the portion to be corrected-(identification of reference point, start point S ', end point E')-(input of start point S and end point E)". -Calculation of conversion constants-input of feature points on a finished drawing-coordinate conversion ".

The present invention can of course be applied to the case of partially correcting only map data or the case of partially correcting various graphic databases as described in [0003].

[0032]

As described above, according to the present invention, a part of an existing drawing
Display of points on paper drawings (such as ready-made drawings) describing the corrections
Move the corresponding point on the screen from the reference point in the existing drawing.
Away (for example can type diagram marked the original de - data L ₁ ~
L ₄ ), and then the position coordinates of this specific point
And the corresponding point of the paper drawing pasted on the digitizer, for example.
The conversion constant between and the position coordinates of
Since the coordinate data of the portion to be corrected on the paper drawing is converted into the position coordinates of the graphic database, the process of partially correcting the graphic data of the existing drawing can be made simple and accurate. .

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 is an explanatory diagram showing a conversion formula of position coordinates according to the present invention.

FIG. 3 is an explanatory diagram showing a procedure for correcting equipment data according to the present invention.

FIG. 4 is an explanatory diagram showing a display screen of the whole drawing to be corrected according to the present invention.

FIG. 5 is an explanatory diagram showing an enlarged display screen of a correction target portion according to the present invention.

FIG. 6 is an explanatory diagram showing a state when a start point S ′ and an end point E ′ are specified on an enlarged display screen according to the present invention.

FIG. 7 is an explanatory diagram showing an enlarged display screen at the time when the equipment data correction process of the present invention is completed.

FIG. 8 is an explanatory diagram showing an outline of a general computer mapping system.

FIG. 9 is an explanatory diagram showing a general format format of graphic data.

FIG. 10 is an explanatory diagram showing an outline of a general, ready-made diagram.

FIG. 11 is an explanatory diagram showing a conventional drawing for a paper to be corrected.

FIG. 12 is an explanatory diagram showing a lower diagram for correction input in a state where a ready-made drawing is pasted on a paper drawing to be corrected according to the related art.

FIG. 13 is an explanatory diagram showing a conventional procedure for correcting equipment data.

[Explanation of symbols]

 In FIG. 1, 1 ... Graphic database 2 ... Display screen 3 ... Paper drawing (finished model) 4 ... Digitizer 5 ... Application program

Continuation of front page (56) References JP-A-3-19089 (JP, A) JP-A-62-278679 (JP, A) JP-A-2-79165 (JP, A) JP-A-3-2979 (JP) , A) (58) Field surveyed (Int. Cl. ⁷ , DB name) G06F 17/50 G06T 11/60

Claims (4)

(57) [Claims] Screen display of an existing drawing of at least a plurality of lines of claim 1 Any area, based on the paper drawing that describes the local changes of the existing drawings, the changes the graphic data of the existing drawings and so as to correspond to the graphic de - in data portion correction system of a display unit for screen display the existing drawing, the paper drawing, coordinates and correction line of the first point the
Position coordinates of the second point and a coordinate input means for inputting respectively, said first position coordinates of a point, after calculating the conversion constant between the position coordinates of the corresponding point on the screen display of the point, the second And a data processing means for converting the position coordinates of the point with the conversion constant, and correcting the graphic data of the existing drawing with the converted position coordinates. The data processing means converts the corresponding point into the existing drawing. During ~
A partial correction system for graphic data, wherein the system is specified using a distance from a reference point . 2. The apparatus according to claim 1, wherein the graphic data includes map data and equipment data indicating a pipe network such as a gas pipe or a water pipe, and the equipment data is to be corrected. 2. The system for partially correcting graphic data according to claim 1. 3. Using coordinate input means and data processing means based on a screen display of an existing drawing consisting of at least a plurality of lines for an arbitrary area and a paper drawing describing local changes of the existing drawing. In the method for partially correcting graphic data, the graphic data of the existing drawing is made to correspond to the contents of the change , the position input and correction of the first point of the paper drawing are performed by the coordinate input means. The position coordinates of the second points on the line are input, and the data processing means displays the screen table of the first points.
Distance from the reference point in the existing drawing
And the position coordinates of the first point and
After calculating a conversion constant with the position coordinates of the corresponding point, the position coordinates of the second point are converted by the conversion constant, and the graphic data of the existing drawing is corrected with the converted position coordinates. A method for partially correcting graphic data characterized by the following. 4. The graphic data is configured to include map data and equipment data indicating a pipe network such as a gas pipe and a water pipe, and the equipment data is to be corrected. The method for partially correcting graphic data according to claim 3 .