JPH09319855A - Device and method for map generation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the work load by subtracting an old-version drawing, before information is added from an old-version after the addition, and extracting only the difference added information parts, and compositing the difference parts and a new-version drawing. SOLUTION: An old-version map 8, an old-version map 9 to which information has been added, and a new-version map 10 are inputted through an image scanner 6. Their respective image data are stored in a magnetic disk drive 5 as old-version map data 11, old-version map data 12 to which the information is added, and new-version map data 13. The old-version map data 11 are subtracted from the old-version map data 12 to which the information is added, to extract their differences, and processed map data 14 obtained by putting the extracted differences and new-version map data 13, one over the other, are outputted on a printer 7. To the processed map 15 outputted on the printer 7, handwritten information is added 16 in actual operation and is replaced by the old-version map 9 to which the information is added. The new-version map 17 is issued periodically, to replace the new-version map 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for creating a map in which only a map portion is changed to a new edition map in a map in which various kinds of information are added to the map.

[0002]

2. Description of the Related Art Conventionally, when creating a new version map, for example, "Pixel" 1984, published by Graphic Processing Information Center.
As shown in the March issue of the year, each piece of information was copied to the new edition map while carefully comparing the information added to the old edition map that had been used so far so that it would not be missed.

[0003]

In the above-mentioned prior art, even if the new version drawing is only partially different from the old version drawing, the new version drawing does not lose the correction portion to the old version drawing which is not electronically imaged. Everything had to be manually transcribed from the beginning, or the new edition drawings had to be input to the computer by an image scanner or the like, and all the corrected portions of the old edition drawings had to be transcribed on the computer.

Further, the work of copying the additional information portion must be repeated each time a new edition of the base drawing is issued, which requires a great deal of labor.

An object of the present invention is to compare the conventional drawings by subtracting the old edition drawing before the information is added from the old edition drawing after the additional writing, extracting the difference only in the additionally written information portion, and synthesizing the difference and the new edition drawing. It is an object of the present invention to provide a map creation apparatus and method that can obtain the same result with a small amount of work.

[0006]

[Means for Solving the Problems] The above-mentioned object is to input an old map and a new map in which the old map and the information are added, and to convert the digital map into digital data, and the old map and the information converted into the digital data. A display means for displaying the old edition map additionally written, and a means for extracting the difference between the old edition map displayed on the display means and the old edition map additionally written with the information, and the extracted difference and the digital This can be achieved by providing means for displaying the new version map converted into data on the display means in an overlapping manner, and means for printing out the image displayed on the display means.

[0007] Further, the above object is to input an old edition map and a new edition map to which an old edition map and information have been added and convert it into digital data, and an old edition map to which the digital data has been added and an old edition to which the information has been added. Displaying the map in an overlapping manner, extracting the difference between the old version map displayed on the display means and the old version map to which the information has been added, and the new version converted into the digital data. Displaying on the display means by superimposing with a map,
And a step of printing out the image displayed on the display means.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, which comprises a processing device 1, a display device 2, a keyboard device 3, a mouse device 4, a magnetic disk device 5, an image scanner 6, a printer 7 and the like. In this embodiment, when the old edition map 8, the old edition map 9 with the added information, and the new edition map 10 are input from the image scanner 6, the respective image data are the old edition map data 11, the old edition map data 12 with the added information, and the new edition map data 13. Is stored in the magnetic disk device 5. Old version map data 1 stored in the magnetic disk device 5
In the old version map data 12 to which 1 and information have been added, the old version map data 12 to the old version map data 11 to which information has been added
Is subtracted to extract the difference, and the processed map data 14 obtained by superimposing the extracted difference and the new version map data 13 is output from the printer 7. Information 16 is added to the processed map 15 output from the printer 7 by handwriting during actual operation, and replaced with the old map 9 to which the information has been added. On the other hand, the new edition map 17 is regularly issued, and the issued new edition map 17 is replaced with the new edition map 10.

FIG. 2 shows the internal structure of the processing apparatus 1. The processing device 1 includes a processing unit 20 for performing processing such as correction of deviation of image data, a main storage unit 27 for reading image data to be processed from the magnetic disk device 5, and a display device 2 for displaying processing steps and processing results. A display device interface unit 26 for connection, a keyboard device interface unit 2 for connecting a keyboard device 3 for fetching information necessary for this processing by man-machine operation
1. Similarly, a mouse device interface unit 22 to which the mouse device 4 is connected, a magnetic disk device interface unit 23 to which a magnetic disk device 5 for storing data to be processed and a processing result is stored, and an image of importing a map as a document into a computer An image scanner interface section 24 for connecting a scanner and a printer interface section 25 for connecting a printer for printing a processing result are configured.

FIG. 3 shows a schematic processing flow of processing performed by the processing unit 20 of FIG. First, the old edition map 9 and the new edition map 10 to which the old edition map 8 information has been added are input to the image scanner 6 and converted into digital data, and then the old edition map data 1 is respectively stored in the magnetic disk device 5.
1, stored as old version map data 12 and new version map data 13 to which information has been added. Next, the old version map data 11 and the old version map data 12 to which information has been added for image processing are taken out from the magnetic disk device 5, and the main storage unit 2
Read in 7. Then, the difference obtained by subtracting the old version map data 11 from the old version map data 12 to which the information has been added, that is, the difference image data of only the added information portion is extracted. After the difference extraction is completed, the old version map data 1 read into the main storage unit 27
The old map data 12 added with 1 and information is stored in the main storage unit 27.
Free from. Then, the difference between the old version map data 12 and the old version map data 11 to which the previously extracted information is added is overlaid on the new version map data, and the combined data is stored in the magnetic disk device 5. Through this series of processing, it is possible to acquire an image in which the added information portion is reflected on the new edition map 10. Finally, the image data obtained by superimposing and combining the information and the added old-version map image 12 and the old-version map data 11 is released from the main storage unit 27, and the process ends.

FIG. 4 shows an example of a state in which the old version map data 11 and the old version map data 12 to which information has been added are loaded into the main storage unit 27, and both images are superimposed and displayed on the display device 2. In the figure, the solid line portion shows the old version map image 40 with added information, and the dotted line portion shows the old version map image 41. As shown in this figure, a part of both images overlap each other, but it can be seen that some parts are deviated. Therefore, it is a very rare case that the difference can be extracted without any modification to the image data.

Therefore, a method of extracting these differences will be specifically described below.

First, as the first extraction method, the old version map image 40 and the old version map image 4 with information added as shown in FIG.
Both images No. 1 are equally divided in the vertical direction and the horizontal direction, and each part is extracted and processed. The solid line portion shows the old version map image 40 to which information is added, and the dotted line portion shows the old version map image 41.

FIG. 6 shows a schematic processing flow of the difference extraction shown in FIG. As shown in FIG. 5, the old map image 40 and the old map image 41 to which information has been added are equally divided into a predetermined number, and in order to clarify the correspondence between the divided regions, P (i, j), An area called Q (i, j) is set. Then, in the old version map image 40 and the old version map image 41 to which the information is added, the image P of the corresponding area is displayed.
(I, j) and Q (i, j) are loaded into the main storage unit 27.
At this time, assuming that the deviation is corrected, the size of the maximum error is expanded vertically and horizontally, and a slightly larger area is captured. The P (i, j) and Q (i, j) are displayed on the display device 2 in a superimposed state. At this time, P (i, j) and Q
If (i, j) is vertically or horizontally deviated, the operator uses the mouse device 4 or the keyboard device 3 to enter the Q
Move (i, j) to eliminate vertical or horizontal misalignment. Next, if there is an angular deviation between P (i, j) and Q (i, j), the operator eliminates the angular deviation by rotating Q (i, j) with the mouse device 4 or the keyboard device 3. . Further, if there is a large or small deviation between P (i, j) and Q (i, j), the operator enlarges or reduces Q (i, j) with the mouse device 4 or the keyboard device 3 to make the large or small deviation. lose. In this way, after the operator corrects the deviation by operating while viewing the image, P (i, j)
And the difference between Q (i, j) is extracted.

Next, the second difference extraction method will be described.

In FIG. 7, the mouse device 4 designates, as a specific point, a position which is common to both the images such as intersections and houses in the old map image 40 and the old map image 41 to which the information is added in FIG. Then, a method of performing the difference extraction processing for each area near the specific point is shown.

FIG. 8 shows a schematic flow of the difference extraction method.
The image area A near the specific point A in the old version map image 40 to which the information designated by the mouse device 4 has been added is captured.
Here, the vicinity of the specific store A is a predetermined area centered on a specific point. An image area A'in the vicinity of a specific point A'in the old version map image 41 designated by the mouse device 4 is captured. The image area A and the image area A ′ are superimposed and displayed on the display device 2. At this time, if there is a vertical or horizontal shift between the image area A and the display area A ′, the operator moves the image area A ′ with the mouse device 4 or the keyboard device 3 to eliminate the vertical or horizontal shift. . Next, if there is an angle deviation between the image area A and the image area A ′, the operator rotates the image area A ′ with the mouse device 4 and the keyboard device 3 to eliminate the angle deviation. Further, if there is a size difference between the image area A and the image area A ', the operator enlarges or reduces the area A'using the mouse device 4 or the keyboard device 3 to eliminate the size difference. Then, after correcting the displacement between both images in this way, the difference between the image area A and the image area A ′ is extracted.

However, the movement, rotation, and
In many cases, the deviation cannot be eliminated only by the correction of enlargement / reduction.

Therefore, the third difference extraction method will be described.

As shown in FIG. 9, when Ti is a specific point in the old version map image 40 to which information is added and Ti ′ is a specific point in the old version map image 41, a deviation ΔTix, Y in the X direction is obtained.
The deviation ΔTiy in the direction is calculated for each specific point, the distortion of the old version map data 11 is corrected based on the calculation result, and then the difference is extracted.

FIG. 10 shows a schematic flow of a method for obtaining coordinate values of a specific point. First, the old version map data 11 and the old version map data 12 to which the information has been added are loaded into the main storage unit 27 and displayed on the display device 2 in an overlapped state. Specific point Ti in the old version map data 12 to which information has been added by the mouse device 4
Is specified. As described above, the specific point Ti is a position that serves as a mark common to both images, such as an intersection and a house. Further, although the specific points are set at five points in this embodiment, the number may be more or less than that. Then, the coordinate Ti (Tix, Tiy) of the specific point is acquired and stored in the main storage unit 27. Next, the mouse device 4 is used to specify the specified point on the old map data 11 so that the specified point is the same as the specified point.
Specify i '. Then, the coordinates of the specific point Ti ′ (Ti ′
x, Ti′y) is acquired and stored in the main storage unit 27.

FIG. 11 shows the positional relationship between the respective specific points obtained in FIG. 10 and the positional relationship after distortion correction of an arbitrary point. The two specific points designated in the old version map image 40 to which the information has been added are A (Ax, Ay) and B (Bx, By), and the corresponding specific points of the old version map image 41 are A '(A'x, A'y. ) 、
Let B (B'x, B'y). Here, old map image 41
It is assumed that the specific point A and the specific point A ′ coincide with each other by moving, and that the specific point B and the specific point B ′ have a deviation ΔBx in the X direction and a deviation ΔBy in the Y direction. Further, an arbitrary point in the old version map image 41 is P (Px, Py), and a point after distortion correction is P '(P'x, P'y). At this time,
The triangle ABB 'and the triangle AP'P may have a similar relationship. Therefore, the coordinate value of the point P '(P'x, P'y) after the distortion correction can be obtained by the following equation.

[0024]

## EQU1 ## P'x = Ax + ((Px-Ax) / (Bx-Ax)). Multidot.Bx ... (Equation 1)

[0025]

[Equation 2] P′y = Ay + ((Py−Ay) / (By−Ay)) · ΔBy (Equation 2) Therefore, P (Px, P) for each specific point on the old version map image 41.
y) is (Ax + ((Px−Ax) / (Bx−Ax)) · ΔB
x, Ay + ((Py−Ay) / (By−Ay)) · ΔBy)
The distortion can be corrected by moving to.

Further, a fourth difference extracting method will be described with reference to FIG. In FIG. 12, the solid line portion is the old version map image 40 with added information, and the dotted line portion is the old version map image 4
1 and shows a state in which the line width of the old version map image 41 of FIG. 4 is thickened. By this processing, it is possible to consider that a part that is slightly deviated is also overlapped, and thus it is possible to absorb the deviation between the two images.

FIG. 13 shows a schematic processing flow of a difference extraction method using the result of FIG. The old version map data 11 and the old version map data 12 to which the information has been added are loaded into the main storage unit 27 and displayed on the display device 2 in an overlapped state. Next, the line width of the old version map image 41 is thickened. Finally, the difference obtained by subtracting the old version map image 41 from the old version map image 40 to which the information has been added is extracted. Note that this method is effective for image data in which images are not dense, but it may not be effective in the case of image data in which images are dense, because an unnecessary portion overlaps. In order to deal with such a case, for example, a plurality of line widths are prepared in advance, and the old version map image 40 and the old version map image 41 to which the operator has added the information displayed on the display device 2 are displayed. The line width may be selected while looking, the difference may be extracted with the selected line width, and if the difference cannot be extracted successfully, the operator may select the line width again and extract the difference.

Further, the difference extraction methods described in this embodiment may be used not only individually but also in combination of the first to fourth methods. for that reason,
The four methods described in the present embodiment are displayed on the display device 2 in a menu format so that the operator can select them. Then, the difference is extracted by the method selected by the operator, and the screen returns to the menu screen. If the operator determines that a sufficient difference has been obtained, the processing is ended, and if it is determined that the difference is insufficient, another method is selected and the difference is extracted again. For example, if the operator first selects the first method and extracts the difference and the difference is not sufficiently obtained, the operator selects the fourth method to allow the difference to be extracted. . In this case, the fourth method can be applied to the image resulting from the first method.

[0029]

As described above, the method of reflecting the revised portion of the old version drawing on the new version map screen according to the present invention does not require a huge amount of work which has been performed in the past, and can be performed from the old version map with minimum labor. Enables transition to new edition maps.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a system of the present invention.

FIG. 2 is a diagram for explaining a configuration of a processing device.

FIG. 3 is a diagram showing a schematic processing flow of the present invention.

FIG. 4 is a diagram showing a state in which an old version map and an old version map added with information are displayed in an overlapping manner.

FIG. 5 is a diagram for explaining a first difference extraction method of the present invention.

FIG. 6 is a diagram showing a schematic processing flow of a first difference extraction method of the present invention.

FIG. 7 is a diagram for explaining a second difference extraction method of the present invention.

FIG. 8 is a diagram showing a schematic processing flow of a second difference extraction method of the present invention.

FIG. 9 is a diagram for explaining a third difference extraction method of the present invention.

FIG. 10 is a diagram showing a schematic processing flow of a third difference extraction method of the present invention.

FIG. 11 is a diagram showing a positional relationship between each specific point and a positional relationship after distortion correction of an arbitrary point.

FIG. 12 is a diagram for explaining a fourth difference extraction method of the present invention.

FIG. 13 is a diagram showing a schematic processing flow of a fourth difference extraction method of the present invention.

[Explanation of symbols]

1 ... Processing device, 2 ... Display device, 3 ... Keyboard device, 4 ... Mouse device, 5 ... Magnetic disk device, 6 ... Image scanner, 7 ... Printer, 8 ... Old version map, 9 ... Old version map with information added, 10 … New version map, 11… Old version map data, 12… Old version map data with information added, 13
… New edition map data, 14… Processed map data.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takanori Ota 5-2-1, Omika-cho, Hitachi-shi, Ibaraki Hitachi Process Computer Engineering Co., Ltd. (72) Shinya Seto 5-chome, Omika-cho, Hitachi, Ibaraki No. 1 Hiritsu Process Computer Engineering Co., Ltd. (72) Inventor Toshio Yoshino 5-2-1 Omika-cho, Hitachi-shi, Ibaraki Hitachi Ltd. Omika Plant

Claims (10)

[Claims] 1. A means for inputting an old version map and a new version map to which information is added and converting it into digital data, and an old version map converted to the digital data and an old version map to which the information is added. Display means for displaying in an overlapping manner, means for extracting a difference between the old edition map displayed on the display means and the old edition map to which the information is additionally written, and a new edition map converted to the extracted difference and the digital data. A map creation apparatus comprising: means for displaying the images on the display means in superposition with each other; and means for printing out an image displayed on the display means. 2. The means for extracting the difference according to claim 1, wherein the old map and the old map to which the information is added are equally divided, and one of them is moved, rotated, or enlarged / reduced for each corresponding area. A map creation device, characterized in that the deviation between the old version map and the old version map in which the information is added is corrected and the difference is extracted. 3. The means for extracting the difference according to claim 1, wherein one of the old version map and the old version map in which the information is added is moved, rotated, or enlarged / reduced for each area near a specific point designated from the outside. By doing so, the deviation between the old edition map and the old edition map in which the information is additionally written is corrected, and a difference is extracted. 4. The means for extracting the difference according to claim 1, wherein the distortion amount is calculated based on a predetermined rule for each of a plurality of specific points externally specified on the old map and the old map to which the information is added. A map creation apparatus, which calculates and corrects one image to extract a difference between the old version map and the old version map in which the information is additionally written. 5. The means for extracting the difference according to claim 1, wherein the line width in one image of the old edition map and the old edition map to which the information is additionally written is thickened, and the old edition map and the information are additionally written. A map creation device characterized by extracting a difference from the old version map. 6. A step of inputting an old version map and a new version map to which information is added and converting the old version map and digital data into digital data, and the old version map converted to the digital data and the old version map to which the information is added And the stage of overlapping display,
Extracting a difference between the old edition map displayed on the display means and the old edition map to which the information is added, and superimposing the extracted difference and the new edition map converted into the digital data on the display means. A map creating method comprising: a step of displaying and a step of printing out an image displayed on the display means. 7. The step of extracting the difference according to claim 6, wherein the old map and the old map to which the information is added are equally divided, and one of them is moved, rotated, or enlarged / reduced for each corresponding area. A map creating method, characterized in that the difference between the old version map and the old version map in which the information is added is corrected and the difference is extracted. 8. The step of extracting the difference according to claim 6, wherein one of the old version map and the old version map in which the information is added is moved, rotated, or enlarged / reduced for each area near a specific point designated from the outside. By doing so, the deviation between the old version map and the old version map in which the information is added is corrected, and the difference is extracted. 9. The step of extracting the difference according to claim 7, wherein the distortion amount is calculated based on a predetermined rule for each of a plurality of specific points externally specified on the old map and the old map to which the information is added. A map creating method comprising: calculating, correcting one image, and extracting a difference between the old map and the old map in which the information is additionally written. 10. The step of extracting the difference according to claim 6, wherein the line width in one image of the old edition map and the old edition map to which the information is additionally written is thickened, and the old edition map and the information are additionally written. A method for creating a map, which is characterized by extracting a difference from the old version map.