JPH0636186B2 - Map synthesizer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a map synthesizing device, and more particularly to a map synthesizing device for creating a new map using two existing types of maps.

<< Prior Art >> As is well known, various maps are currently issued in Japan, including the road ledger maps and city planning maps issued by the country, as needed.

Of these maps, for example, in the road ledger map and the city planning map, the house is usually not displayed, or even if it is displayed, the display of the house name is not described.

On the other hand, privately issued residential maps are provided that display the same area as the above map and have the houses and house names described.By combining these maps, a wide range of requirements can be met. You can get a convenient map that you can handle.

By the way, in order to synthesize a plurality of maps of this kind, for example, it is conceivable to convert two types of maps into map data and synthesize them by computer processing. There was a technical problem explained in.

<< Problems to be Solved by the Invention >> That is, now, for example, there are first and second maps describing the same area, and the first map is diagram data showing the sizes and positions of blocks and houses, It has character data indicating a house name corresponding to a house, and the second map has only diagram data indicating the size and position of the block or diagram data indicating the size and position of the block and house. In this case, secondly, when it is attempted to combine the line drawing data indicating the houses of the first map with the character data, or only the character data, the scale ratios of the first and second maps are matched first. It will be synthesized.

However, even if the scale ratio is the same, the two types of maps are
For example, the size of a block or a house may be subtly different or the size of a house may be displayed in an abbreviated manner due to the surveying method or copying. If you move it to the map shown in Figure 2, the house may protrude from the block, or the house name may protrude from the house.
Furthermore, there is a problem that the size of the house and the display of the house name are out of balance.

When such a problem occurs, for example, the synthesized map is displayed on the CRT, and the operator uses the tablet to correct the positions of the line drawing data and the character data. Requires a lot of time and effort.

The present invention has been made in view of the conventional problems as described above, and the purpose thereof is to automatically correct the position, size, etc., even if the operator does not indicate the correction position. It is an object of the present invention to provide a map synthesizing device that can obtain a synthetic map displayed in a diagram and characters.

<< Means for Solving the Problems >> In order to achieve the above object, the present invention provides line drawing data indicating the size and position of a block, a house, and a house name corresponding to the line drawing data. A first map having character data and a second map having the same area as that of the first map described therein and having at least the line map data corresponding to the line map data of the first map are synthesized. A map synthesizing device for creating a new map, wherein the line map data of the first map and the line map data of the second map are compared to detect differences in position, length, direction, etc. Deviation detecting means, and correction means for correcting the line map data or character data of the second map based on the difference when the difference detecting means detects that the difference is equal to or more than a set value. It is characterized by having.

<< Operation >> According to the map synthesizing apparatus having the above-described configuration, when the deviation detecting means detects the deviation such as the position or the size larger than the set value, the data of the first map is corrected to form the second map. Since the map to be newly combined is provided with the correction means for matching, the size and position of the house and the size and position of the house name are automatically adapted to the map.

<Example> Hereinafter, a preferred example of the present invention will be described in detail with reference to the accompanying drawings.

1 to 6 show an embodiment of a map synthesizing apparatus according to the present invention.

As shown in FIG. 2, the map synthesizing device shown in FIG. 1 includes diagrams 1A and 2A showing the sizes and positions of blocks and houses, and letters 3A showing house names corresponding to the diagram 2A of houses. Diagrams 1B and 2 showing the first map A that it has and the same area as this first map A and showing the sizes and positions of the blocks and houses
Using the second map B having B, diagrams 1C and 2C showing sizes and positions of blocks and houses, and a diagram 2C of houses
Map C with the letter 3C displaying the house name corresponding to
And is configured as shown in FIG.

The map synthesizing apparatus sets the line diagrams 1A and 2A of the first map A as a set of line segments from the characteristic points (bending points, end points, branch points, etc.) to the characteristic points, and digitizes the line diagram data 1a into plane coordinates. , 2a
And a first storage means 10 for storing character data 3a in which the position, size, direction, type, etc. of the character 3A are digitized,
Similarly, a second storage means 12 for storing the digitized diagram data 1b and 2b of the diagrams 1B and 2B of the second map B,
Correspondences between the line diagram data 1a, 2a, 1b, 2b stored in these storage means 10 and 12 and corresponding ones are compared with each other to detect a displacement such as a positional displacement or a size displacement. The deviation detecting means 14, the correcting means 16 for correcting the character data 3a of the first map A when the deviation detecting means 14 detects a deviation larger than a set value, the line map data 1c, 2c of the composite map C, and The third for storing the character data 3c, or for storing the contrast relation between each data
And the storage means 18 of FIG.

In this embodiment, the display 20 for displaying the composite map C and the like is provided in addition to the above means, but the display 20 is not always necessary.

Also, in digitizing the first and second maps A and B, the scale factors of the maps A and B are matched in advance.

The processing procedure of the map synthesizing apparatus configured as described above
Shown in the figure.

In the processing procedure shown in the figure, first, when starting, the diagram data 1a and 2 from the first and second storage means 10 and 12, respectively.
a, 1b, 2b and the character data 3a are read in step S0, and in the following step S1, the correspondence relationship between the line diagram data 1a, 1b indicating the block is set.

Here, the correspondence between the line diagram data 1a and 1b is performed as shown in FIG.

Note that the same method is used for the correspondence relationship between the diagram data 2a 'and 2b showing houses described later.

As for the correspondence, the circumscribed rectangle X of the line drawing data 1a and 1b is calculated, and the center coordinates C ₀ of the rectangle X are calculated.

Then, the ones having the closest center coordinates C ₀ between the line drawing data 1a and 1b indicate the same block (house).

The correspondence relationship between the line diagram data 1a and 1b thus obtained is stored in the storage means 18 in the form of a reference table together with the position of the center coordinates and is read out as needed in the subsequent processing.

After obtaining the correspondence relationship as described above, the diagram data 1b
Is stored as the same 1c, and in step S2, as shown in FIG. 5, corresponding ones of the diagram data 1a and 1b showing the blocks are compared with each other, and the deviation P of the center coordinates C _1a and C _1b is compared. Is calculated, and if it is determined that this is greater than or equal to the set value,
In step S4, all of the diagram data 2a indicating the houses included in the diagram data 1a indicating the block is converted to the block data 1a,
The displacement P of the center coordinate of 1b is corrected and stored as line diagram data 2a '.

If it is determined in step S2 that the deviation is within the set value, the data 2a included in the data 1a is directly converted into the data 2a 'in step S5.

In step S6 subsequent to steps S4 and S5, the correspondence between the line drawing data 2a 'and the data 2b indicating the house on the second map B is performed by the above-described method, and the correspondence and the central coordinates are set as a comparison table. It is stored in the storage unit 18. Correspondence relationship stored in the storage means 18, that is, line diagram data 2
a ', 2b, 2b = 2c are read out later as needed and displayed on paper, CRT or the like.

As described above, when the correspondence between the line drawing data 2a and 2b of the houses on the first and second maps A and B is obtained, the deviation between the data 2a and 2b is detected in step S7, and the deviation is large. Is determined to be within the set value.

If it is determined in step S7 that the deviation is greater than or equal to the set value, the character data 3a is determined based on the deviation in subsequent step S8.
Is corrected, and the corrected data is the data 3c of the composite map C.
Is stored in the storage means 18.

FIG. 6 shows an example of the method for detecting the deviation of the house data 2a, 2b executed in step S7.

In the example shown in the figure, the character data 3a is the house data 2a.
While displaying the family name and (Yamada) corresponding to such character data 3a it is generally converted to a character code, for example, to set the representative position K _a at an end and the center of the first character, that direction ， It is quantified with the size.

Therefore, the house data 2 for correcting the character data 3a
When detecting the deviation between a and 2b, the positions of 2a and 2b,
It is necessary to detect deviations in direction and size.

The positional deviation can be represented by the deviation of the central coordinates C _0a and C _0b .

The deviation of the direction and the size is obtained by obtaining the line segments Q and Q ″ by the following method and by the difference in the direction and the length of the line segments Q and Q ″.

First, in the same direction as the character data 3a, the representative position K
_A line segment Q passing through _a is obtained, and this line segment Q is used as center coordinates C _0a and C
The line segment Q'in the frame of the line drawing data 2b is calculated by parallel translation by the shift of _0b .

Next, it is determined whether the line segment Q is parallel to the line segment 2a having a certain length or more,
A line segment corresponding to this line segment is selected from line segments having a certain length or more in the line drawing data 2b, and the line segment Q'is rotated so as to be parallel to the selected line segment. Ask.

Specifically, in the example shown in the figure, since the line segment Q is parallel to the line segment, the line segment Q ′ is rotated about the representative position K _c so as to be parallel to the corresponding line segment, and the line segment Q is rotated. ″

In selecting the correspondence between the line segments ,,, and the line segments ,,, those with a smaller difference in inclination are selected, and if there are multiple these, the one with the closer distance between the start point and the end point is selected. Selected.

Next, an example of the method of correcting the character data 3a executed in step S8 will be described with reference to FIG.

Regarding the position of the character data 3a, the shift between the center coordinates C _0a and C _{0b of} the data 2a and 2b obtained in step S7 is calculated, the representative position K _a is corrected by the shift, and the corrected position is calculated. The storage unit 18 stores the representative position K _c .

The direction and size of the character data 3a are also determined in step S7.
Based on the line segments Q and Q ″ obtained in step 1, the direction of the character is corrected to the direction of Q ″, and the size of the character is corrected to an appropriate size in proportion to the difference between the lengths of Q and Q ″.

In addition, regarding the correction relating to the position of the character data 3a,
It is desirable that the set values for the deviations of the data 2a and 2b be made as small as possible and that the positions be corrected even with slight deviations.

On the other hand, if it is determined in step S7 that the deviation between the data 2a and 2b is within the set value, the data 3a is converted to the data 3c of the composite map C and stored as it is in step S9.

Next, in step S10, it is determined whether or not the processing of the data 2a included in the line drawing data 1a has been completed. If not completed, the processing returns to step S7, and the processing of another data 2a is executed. .

Then, in step S10, the data 2 in the line drawing data 1a
When it is determined that the process of a has been completed, step S
At 11, it is determined whether or not all the block data 1a of the first map A has been completed, and if not completed, the process returns to step S2.

When the process progresses and it is determined in step S11 that all of the data 1a have been completed, the program ends, whereby the line map data 1b showing the block of the second map B and the line map data 2b showing the houses are changed. The synthetic map data including the character data 3a indicating the house name of the matched first map A is automatically obtained.

7 to 11 show another embodiment of the map synthesizing device according to the present invention. In this embodiment, diagrams 1D and 2D showing the sizes and positions of blocks and houses and lines of houses are shown. A second map D having a first map D having a character 3D indicating a house name corresponding to FIG. 2D and the same area as the first map D and having a diagram 1E indicating the size and position of only the block Using the map E of Fig. 1 and the maps E and 2F, a composite map F having diagrams 1F and 2F showing the size and position of the block and the house and a character 3F displaying the house name corresponding to the diagram 2F of the house is created. Therefore, the synthesizer has the same configuration as that in FIG.

In the map synthesizer, the first map D
Diagram data 1d and 2d that digitized the diagram 1D and 2D
And a first storage means 10 for storing the digitized character data 3d of the character 3D, and a second storage means 12 for storing the digitized diagram data 1e of the diagram 1E of the second map E.
And a deviation detecting unit 14 and a correcting unit 16, and a third storage unit 18 for storing the line map data of the composite map F.

In the map synthesizing device, each data is processed according to the processing procedure shown in FIG. 8, but steps S100 to S101:
The description is omitted because it is substantially the same as steps S0 to S1 of the processing procedure of the above embodiment.

In this embodiment, as shown in FIG. 9, step S102.
Then, the data 1d and 1e are compared with each other to calculate the deviation size P of the central coordinates C _1d and C _1e , and when it is determined that this is greater than or equal to the set value, the line diagram data 1d and 2 are calculated in step S103.
d and the character data 3d are moved and corrected by the deviation P of the center coordinates of the block data 1d and 1e, and the corrected numerical values are stored in the storage means 18 as data 1f ', 2f', 3f '.

If it is determined in step S102 that the amount of deviation between the data 1d and 1e is within the set value, step S
At 104, each data 1d, 2d, 3d of the first map D is
The data 1f ', 2f', 3f 'of the composite map F are stored in the storage means 18, respectively.

In step S105, the house data 2f 'and the house name data 3f', which have been moved and corrected by the deviation P of the central coordinates of the block data 1d, 1e in steps S102 and 103, are the block data 1
Check that it does not extend outside f.

In step S106, correction is performed when 2f 'and 3f' are out of 1f by a set value or more. For example, in the case of the house data 2f 'on the upper right of FIG. 10, the point p where the line segment intersects the line segment is the point where the line connecting the line segment and the center coordinate O _0f intersects 1f' and 1f. Assuming the lengths up to y and x respectively, the corrected _p'point is obtained as (p-O _0f ) x (x / y).

In this way, each line segment of the data 2f ′ is ...
If the start point and the end point of, are obtained, the one that matches the block data 1f can be obtained.

FIG. 11 shows the character data 3f ′ by the same method as described above.
Shows the case of correcting the house name representative position K after the correction.
_f is obtained as (K _f ′ −O _{0 f} ) × (m /),
The line segment Q is similarly corrected, and when Q ′ and Q after correction are significantly different, the direction and size of the character data 3f ′ are also corrected correspondingly.

If it is determined in step S105 that the protrusion is within the set value, in step S107 the house data 2f ′,
The house name data 3f 'is the data 2 of the synthetic map F, respectively.
It is stored in the storage means 18 as f and 3f.

Then, in step S108, it is determined whether or not all the block data 1d of the first map D is completed, and if not completed, the process returns to step S102.

If it is determined in step S108 that all of the data 1d has been completed, the program ends, which causes the second map E to end.
The synthetic map data including the house data 2d and the house name data 3d of the first map D that match the line drawing data 1e indicating the block of the above is automatically obtained.

<< Effects of the Invention >> As described in the above embodiments, according to the map synthesizing apparatus according to the present invention, when a synthetic map is created with a map in which two types of the same area are described, a map between the two types of maps is created. Since the deviation is detected and the data is corrected based on the deviation, the above two types of maps can be automatically combined without the operator having to make troublesome corrections on the tablet.

[Brief description of drawings]

1 to 6 show a first embodiment of the present invention,
FIG. 1 is an overall configuration diagram of the device of the present invention, FIG. 2 is an explanatory diagram of two types of maps to be combined and a composite map, FIG. 3 is a flowchart showing an example of a processing procedure of the device of the present invention, and FIG. Is an explanatory diagram for obtaining the correspondence relation of data between two types of maps, FIG. 5 is an explanatory diagram of position correction for obtaining the correspondence relation of house data, and FIG. 6 is a case for correcting characters in the flowchart. FIG. 7 to 11 show a second embodiment of the present invention, FIG. 7 is an explanatory view of two types of maps to be combined and a combined map, and FIG. 8 is a flowchart showing a processing procedure, FIG. FIG. 9 is an explanatory diagram for correcting the line drawing and the character data in this flowchart, and FIGS. 10 and 11 are diagrams for correcting the line drawing and the character data when the method of FIG. FIG. A, D ... First map B, E ... Second map C, F ... Composite map 1a-1f ... Diagram data 2a-2f ... Diagram data 3a-3f ... Character data 14 ... ... Deviation detecting means 16 ... Correcting means

Claims (1)

[Claims] 1. A first map having line drawing data indicating the size and position of a block, a house, and the like, and character data such as a house name corresponding to the line drawing data, and the first map. A map synthesizing device which describes a same area and synthesizes at least a line map data of the first map and a second map having corresponding line map data to create a new map.
Deviation detecting means for detecting a difference in mutual position, length, direction, etc. by comparing the line drawing data of the map with the line drawing data of the second map, and the difference is a set value by the deviation detecting means. A map synthesizing apparatus comprising: a correction unit that corrects the line drawing data or the character data of the second map based on the difference when the above is detected.