JPH0711826B2 - Drawing correction device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a drawing correction apparatus that corrects an existing drawing to create a required drawing.

[Conventional technology]

When the map data is processed by a computer, administrative districts, roads, buildings, characters, etc. are usually created as individual data, and these are taken out as combined data combined as necessary.

Fig. 4 (a) shows the first map combining the block area and roads, and Fig. 4 (b) shows the location of underground pipes for gas, water, etc. created based on this first map. The first equipment layout diagram shown in Fig. 4 (c) shows the characteristic points of the underground pipe such as the bending angle and their positions (coordinates in the coordinate system with the X axis on the horizontal axis and the Y axis on the vertical axis). shows a diagram, a, B, C are city blocks area such as each _{building, R 1, R 2, R} 3 _{roads, P 1, P 2, P} 3 are feature points showing a corner of the ground tube, Is a mark indicating a feature point.

FIG. 4D shows the second map, which shows the same area as the area shown by the first map, but the block area is D, E,
It has changed to F and G. Therefore, it becomes necessary to correct the position of the underground pipe in the first equipment layout drawing based on such a second map.

Conventionally, as a device for correcting drawings such as maps, the fifth
A device as shown in the figure has been proposed.

FIG. 5 is a block diagram showing a conventional drawing correction device,
In the figure, 1 is a first map data storage means, 2 is a second map data storage means, and 3 is a first equipment layout drawing storage that stores a first equipment layout drawing created based on a first map. Means 4 adds a correction to the first equipment layout drawing to make a second
Drawing correction means for creating a second equipment layout drawing conforming to the map of No. 5, second equipment layout storage means for storing the second equipment layout drawing created by the drawing correction means 4,
6 is a display for displaying maps and equipment layout drawings, 7
Is a tablet for designating one point on the screen of the display 6.

The drawing correction means 4 is the first map data storage means 1 to the first
Map (data) of the second map data storage means 2
To the second map (data), and the first equipment layout drawing (data) from the first equipment layout drawing storage means 3 are read and displayed on the display 6 as shown in FIG.

FIG. 6 is an explanatory view showing the first map, the second map and the first equipment layout drawing by superimposing them on the display, and the first map is a solid line and the second map is a broken line. Shows. As is clear from this display, the characteristic point P ₂ in the first equipment layout drawing created based on the first map shown by the solid line is located along the block area B on the right side of the road R ₁ , but is broken line. The feature point P ₂ is located inside the block area E on the second map indicated by.

Therefore, when correcting the position of this feature point P ₂ based on the second map, the position to move to is determined according to a predetermined condition, and usually the positional relationship between the road R ₁ and the feature point P ₂ Is applied to the road R ₄ and the corrected feature point P ₂ as they are. Under such conditions, it is appropriate that the feature point P ₂ be located at the point a ′ that is on the right side of the road R ₄ . Therefore, based on the above judgment, the operator
Characteristic points P ₁ and P of each middle pipe displayed on the display 6
₂ and P ₃ are used to indicate the corrected position using the tablet 7. For example, for the characteristic point P ₂ , when the point a is first designated by the tablet 7, the characteristic point P ₂ is selected by checking the equipment arrangement data.

Next, when the point a'is designated with the tablet 7, the point a '
The X and Y coordinates are written in the position column of the characteristic point P ₂ of the equipment arrangement position data as shown in FIG. The equipment layout data obtained as a result of performing this processing on each of the other feature points, P ₁ and P ₃ , is stored in the second equipment layout drawing storage means 5.

[Problems to be Solved by the Invention]

Since the conventional drawing correction device is configured as described above, it is necessary for the operator to instruct the corrected position for each piece of equipment one by one using the tablet, and therefore the correction requires a lot of time and labor. There was a problem.

The present invention has been made to solve the above problems, and the position of each equipment is automatically corrected even if the operator does not use the tablet to indicate the corrected position for each equipment. An object is to provide a drawing correction device.

[Means for Solving the Problems]

The drawing correction device according to the present invention stores road correspondence data that compares the first map and the second map and associates the two roads with each other, and the road correspondence data obtained by the road correspondence means. And a drawing correction means for correcting the drawing.

[Action]

According to the present invention, the first map and the second map are compared with each other by this, and the roads in both drawings are associated with each other. The position can be determined.

〔Example〕

Hereinafter, the present invention will be specifically described with reference to the drawings illustrating the embodiments.

FIG. 1 is a block diagram of a drawing correction device according to the present invention (hereinafter referred to as the device of the present invention), in which 1 is first map data storage means, 2 is second map data storage means, and 3 is first. Means for storing the first equipment layout drawing determined based on the map of 4
Is the drawing correction means, and 5 is the second determined based on the second map.
Facility layout drawing storage means, 6 is a display, and 8 is a first
It is a road associating means for obtaining the correspondence of the road between the map and the second map.

The first map and the second map as shown in FIGS. 4 (a) and 4 (d) are respectively stored in the first map data storage means 1 and the second map data storage means 2 and the first facility arrangement. The drawings are stored in the first equipment layout drawing storage device 3, respectively.

Each map data is represented as a set of line segments from the characteristic points to the characteristic points. Here, the characteristic point is the bending point,
It means an end point, a branch point, etc. For example, each line segment is represented by X and Y coordinates of a start point and an end point.

The road correlating means 8 extracts roads from the first map and the second map, and then correlates each road between the two maps. An example of the association method is shown below.

First, for each of the first and second maps, within the block area,
Or detect a pair of line segments that are almost parallel between the block areas,
If the conditions such as the intervals are met, all the roads are detected by defining the area surrounded by these line segments as the road. In this way, the roads R ₁ , R ₂ , R ₃ of the first map and the roads R ₄ , R ₅ , R ₆ , R ₇ , R ₈ of the second map can be detected.

Next, the roads R ₁ , R ₂ , R ₃ on the first map and the road R _{4 on} the second map
Correspond between ~ R ₈ . This correspondence is, for example, by using the directions of the roads and the center coordinates of the roads, if the road directions are almost the same and the center coordinates are the closest, one-to-one or many-to-one or one-to-many Correspondence including correspondence.

That is, comparing each road R ₁ , R ₂ , R _{3 in} FIG. 4 (a) with each block region R ₄ , R ₅ , R ₆ , R ₇ , R ₈ in FIG. 4 (d) ,
It can be seen that the roads R ₁ and R ₄ , the roads R ₂ and R ₆ , the roads R ₃ and R ₇ , and R ₈ correspond to each other, and the road R ₅ does not correspond to any.

The result of associating in this way is stored in the road correspondence map as shown in FIG. 2, and the association between the roads ends. The connections in FIG. 2 show the correspondence.

Next, the equipment layout map is corrected by the drawing correction means 4 based on the road correspondence data as shown in FIG.
FIG. 3 is an explanatory diagram showing an example of a method of correcting the equipment layout drawing, and characteristic points showing a characteristic portion such as a refraction point of an underground pipe or the like
As for P _2, first, the feature point P ₂ is located on the road R _1, the road R ₁ corresponds with the road R _4. There the road
The center lines l ₁ and l ₄ of R ₁ and R ₄ are found, the nearest point O ₁ on the center line l ₁ is found from the feature point P ₂ , and the center line l _{4 is} drawn from this point O _1.
Find the nearest point O ₂ above.

Then, the distance m ₁ between feature points P ₂ and the point O _1, and obtains the distance m ₂ from the feature point P ₂ to the perpendicular foot on the side of the road R _1. Subsequently, on the perpendicular of the center line l ₄ where the point O ₂ as a base point, the distance from the point O ₂ to the intersection of the "position n ₁ and position a" and the side edge and the perpendicular road R ₄ position a n _The position a ″ at which the ratio with ₂ is m ₁ to m ₂ is determined.

Next, the characteristic point P ₂ is arranged at the position a ″.

This makes it possible to correct the positional relationship between the feature points and the road on the second map so as not to be unnatural.

In the above, only one example of the road extraction method is shown, but the same effect can be obtained even if the road is extracted by using another conventional method.

In addition, I made corrections using the inflection point of the underground pipe as a feature point,
The present invention is not limited to this, and various facilities such as an underground pipe may be used as the characteristic points.

Regarding the correction method, the method of obtaining the point O ₂ is only an example, and the ratio of the respective distances from the end points of the center line l ₁ to the point O ₁ and the end points of the center line l ₄ are set. Other methods such as determining the position of the point O ₂ may be used so that the ratios of the respective distances to O ₂ are the same.

Also, although we have not explained the characteristic points inside the intersection, even if you can not draw a perpendicular from the characteristic point to the side of the road, by obtaining the road width in advance,
It is possible to obtain m ₂ and n ₂ by the formula, and it is possible to perform the same correction as the above-mentioned implementation side.

〔The invention's effect〕

As described above, according to the present invention, the road associating means for associating each road between two maps is provided, and the drawings can be corrected for each road based on the road associating data obtained by the road associating means. Therefore, even if the operator does not specify the corrected position for each piece of equipment, it is possible to automatically correct the first equipment layout drawing based on the first drawing to the equipment layout drawing based on the second drawing. is there.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a road correspondence diagram showing a correspondence relation of roads, FIG. 3 is an explanatory diagram showing a correction mode of equipment layout drawings, and FIG. (D) is an explanatory view of map data and equipment layout data, FIG. 5 is a block diagram showing a conventional drawing correction apparatus, and FIG. 6 is an explanatory view showing a conventional drawing correction mode. 1 ... First map data storage means, 2 ... Second map data storage means, 3 ... First equipment layout drawing storage means, 4
...... Drawing correction means, 5 ...... Second equipment layout drawing storage means, 6 ...... Display, 8 ...... Road association means In the drawings, the same reference numerals indicate the same or corresponding portions.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Jun Inoue 1-3-3 Uchisaiwaicho, Chiyoda-ku, Tokyo Tokyo Electric Power Company (72) Inventor Nobuyuki Chikada 1-3-1 Uchisaiwaicho, Chiyoda-ku, Tokyo (56) Reference JP-A-2-47775 (JP, A) JP-A-1-240983 (JP, A) JP-A 61-199172 (JP, A) JP-A 60-33668 (JP, A)

Claims (1)

[Claims] 1. When there is a displacement between two types of maps representing the same area, the first equipment layout drawing created based on the first map is corrected to obtain the second map. A drawing correction apparatus that creates a second equipment layout drawing that matches a map, in which roads in the first map and the second map are respectively extracted, and road correspondence is performed for each road in both maps A drawing amendment device comprising: an attaching means and a drawing amendment means for amending the first equipment layout drawing to create a second equipment layout drawing based on the road correspondence data obtained thereby. .