JP2001195560A - Method and device for image justification and recording medium with program for providing the same method recorded thereon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a geographical information system, in which the adjustment can be easily performed when superimposing and displaying an analog image and a vector map without making a user spend much time or labor for operation. SOLUTION: When aligning the analog image of a display object and the vector map, a first display is performed in the state of aligning the first point of a previously known position on the analog image and the vector map (steps 401-403) and on this display image, the analog image and the vector map are superimposed while using a second point on the analog image and the vector map (steps 404-407).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image position adjusting method and an apparatus therefor, and a recording medium storing a program for realizing the image position adjusting method.
More specifically, an image position adjusting method and an apparatus for superimposing and displaying an analog image such as an aerial photograph and a vector map in a geographic information system, and a program for realizing the image position adjusting method are recorded. Related to a recorded medium.

[0002]

2. Description of the Related Art In a conventional geographical information system, when an analog image such as an aerial photograph and a digital vector map are displayed in a superimposed manner, the analog image side indicates on which position of the vector map the image is located. Holds coordinate information and scale information. For this reason, it is necessary to adjust the analog image and the vector map together before performing the superimposed display. At this time, the image or map is adjusted by moving, enlarging / reducing, rotating, etc. in the vertical and horizontal directions, and the analog image is adjusted. An operation is performed to match the image with the vector map.

As this kind of technology, for example, Japanese Patent Application Laid-Open
A technique disclosed in Japanese Patent No. 218,642 is known. This technology aims at realizing superimposed display of an analog image and a vector map while utilizing the display colors of both maps.To achieve this purpose, this technology uses an arithmetic processing unit. When an analog image and a vector map on an area retrieved and retrieved from an external storage device are superimposed and displayed, control is performed so as to reduce the display intensity of the analog image.

[0004]

In the prior art, generally, in order to accurately match an analog image with a vector map, a method of specifying two points on an image or a map and performing affine transformation to adjust the point is adopted. Can be When the user visually adjusts, operations such as vertical and horizontal movement, enlargement / reduction, and rotation are performed on the analog image or the vector map. At this time, if you perform enlargement / reduction or rotation as fine adjustment, the position adjusted before may be shifted,
There is a problem in that time and labor are wasted until accurate superimposition.

The present invention has been made in view of the above circumstances, and has as its object to solve the problems of the prior art, without spending time and effort on the above-mentioned operations.
An object of the present invention is to provide a geographic information system in which a user can easily perform adjustment when superimposing an analog image and a vector map.

More specifically, an object of the present invention is to provide an operation instruction through a dialogue with a user so that the user can easily perform adjustment when superimposing and displaying an analog image and a vector map. It is an object of the present invention to provide an image position adjusting method and an apparatus therefor that enable a user to easily adjust the superimposition of an image and a map, and a recording medium storing a program for realizing the image position adjusting method.

[0007]

In order to achieve the above object, an image position adjusting method according to the present invention adjusts the position of an image when displaying an analog image and a vector map in a superimposed manner in a geographic information system. An image position adjusting method for adjusting the position of an analog image to be displayed and a vector map in a state where the first point on the analog image and the first map on the vector map, which is known in advance, is aligned. An initial display is performed, and the analog image and the vector map are superimposed on the display image using a second point on the analog image and the vector map.

[0008] In the image position adjusting method according to the present invention, the analog image and the first point on the vector map, which are known in advance, are acquired by a user's designation. Further, the second point on the analog image and the vector map is obtained by designation by a user. Further, in the image position adjusting method according to the present invention, when the analog image and the vector map are superimposed using the second point on the analog image and the vector map, the analog image is vertically and horizontally oriented. It only needs to be enlarged / reduced and does not need to be rotated.

The above-described image position adjusting method according to the present invention can be embodied as an image position adjusting device.

That is, the present invention is an image position adjusting apparatus for adjusting the position of an image when displaying an analog image and a vector map in a superimposed manner in a geographic information system, wherein the analog image is stored. A storage unit, a storage unit for storing the vector map, a file input / output unit, a processing unit for input from the user, and a user specified when aligning the analog image to be displayed with the vector map. A superimposed display processing unit for performing an initial display in a state where the first point on the analog image and the vector map are aligned, and a second display unit on the analog image and the vector map specified by the user on the display image
And a superimposition adjustment processing unit that superimposes the analog image and the vector map using the points (1) and (2).

Further, in addition to the above-described units, the present invention can be embodied as an image position adjusting device having a superimposed display information management unit for managing the result of the adjustment processing by the superimposition adjustment processing unit.

A recording medium on which the image position adjusting method according to the present invention is recorded can be distributed as a product, and the scope of the present invention is defined by any one of claims 1 to 4. The present invention also extends to a recording medium on which a program for realizing the image position adjusting method described in the above item 1 is recorded.

That is, in the present invention, when the user combines the analog image and the vector map so as to overlap them, the point where the analog image and the vector map coincide with each other is fixed in advance, and In addition, if there is another point that matches the position, the analog image or the vector map is adjusted by enlarging / reducing with reference to the previously fixed point. With this, the user simply performs the operation of determining and specifying two points,
A superimposed image that is accurately aligned can be obtained, and by recording this information from the next time, a remarkable effect that an operation is not required for the same area can be obtained.

[0014]

Embodiments of the present invention will be described below in detail with reference to preferred embodiments shown in the accompanying drawings.

FIG. 1 is a block diagram showing an example of the configuration of a geographic information system having a superimposed display control function according to an embodiment of the present invention. FIG. 2 is a block diagram of the geographic information system shown in FIG. Operation screen 2 of adjustment function of analog image and vector map for performing superimposed display as characteristic operation
It is a figure showing an example of 00.

In FIG. 1, reference numeral 100 denotes a map information (digital information) file stored in an HDD or the like, and 101 denotes an image information (analog information) file. Reference numeral 102 denotes a personal computer having a CPU and a main memory, and a file input / output unit 10 for inputting / outputting data of the map information file 100 and the image information file 101 described above.
3 and an image / map superimposition adjustment processing unit 104 which is a characteristic component of the present embodiment. Reference numeral 109 denotes an input device such as a keyboard and a mouse; 110, a display device such as a display; and 111, a printing device such as a printer.

This image / map superimposition adjustment processing unit 104
It is composed of a superimposed display preprocessing unit 105, an adjustment input processing unit 106, a superimposed display control unit 107, and a superimposed display information management unit 108. Note that here, the image / map superimposition adjustment processing unit 10
4 to Each part of the superimposed display information management unit 108 is realized by software, but the present invention is not limited to this. The function of each of these units will be described later in detail in the section of operation description.

The operation of the geographic information system according to the present embodiment configured as described above will now be described with reference to FIGS.
This will be described with reference to FIG. FIG. 3 is an explanatory diagram showing a procedure for calculating an image size in a function of adjusting an analog image and a vector map for performing superimposed display according to the present embodiment, and FIG. 4 is an example of the processing procedure. It is a flowchart shown.

First, the personal computer 10 shown in FIG.
2 obtains the position information (such as an area code) of the map to be superimposed and displayed from the user via the input device 109 (step 401 in FIG. 4), and performs the superimposition display preprocessing unit of the image / map superimposition adjustment processing unit 104 By 105, the vector map and the analog image at the designated position are displayed. Then, the user is caused to specify a point (point A in the example of FIG. 2) which is known to match the position in advance (step 402 in FIG. 2). As shown in (1), the first display is performed (step 403).

Next, the process waits for the user to designate a second point that matches the position on the displayed primary display screen. Here, for example, as shown in FIG. 2, it is assumed that the user knows that the point B on the analog image and the point C on the vector map coincide with each other in position, and the user inputs this information with a mouse or the like. It is assumed that an input operation is performed. Based on this, the adjustment input processing unit 106 determines these two points (point B
And the point C) are superimposed (Step 404).

Thereafter, the superimposed display control section 107 performs superimposed display of the analog image and the vector map by matching the point B on the analog image shown in FIG. 2 with the point C on the vector map. A display calculation process is performed to perform a secondary superimposed display (step 405). Note that, in the example shown in FIG. 2, when the size of the analog image is adjusted without changing the size of the vector map, the analog image is corrected to a dashed rectangle (indicated by an arrow). ing.

If the desired result is obtained by the above processing, the process proceeds to the next step. If the desired result is not obtained, steps 404 and 405 are performed.
Is repeated until a desired result is obtained. Finally, when the position is determined, the superimposed display information management unit 1
A step 08 stores and manages the position information (various display parameters, etc.) of the analog image on the current vector map in a file (steps 406 and 407).

Next, the positioning process in the superimposed display control unit 107 will be described in detail with reference to FIG. FIG.
In (a), the upper diagram (a) shows the initial display state 300 of the analog image specified by the user for superimposed display, and the lower diagram (b) shows the user specifying a point to be matched on this image. A state 301 in which the positioning process has been performed based on the result is shown.

Here, assuming that the horizontal size of the image 300 in FIG. 3 is I _w and the vertical size is I _h , the following equation 1 holds. It should be noted that I _w1 is the horizontal size of the central image before changing with the alignment, so that I _w2 and I _w3 are the horizontal sizes of the left and right portions of the central image, respectively.
I _h1 indicates the vertical size of the central image before changing with the alignment, and I _h2 and I _h3 indicate the vertical sizes of the upper and lower portions of the central image, respectively.

[0025]

(Equation 1)

After the operation of matching the point B on the analog image shown in FIG. 2 with the point C on the vector map, the horizontal size of the image is I _w ′ and the vertical size is I _h ′. Then, the relationship expressed by the following equation 2 is established. Here,
I _w1 ', I _w2 ', I _w3 'and I _h1 ', I _h2 ', I _h3 '
_Are I _w1 , I _w2 , I _w3 and I _h1 ,
The size after the operation corresponding to I _h2 and I _h3 is shown.

[0027]

(Equation 2)

As shown in the equations (1) and (2), a simple operation is required for the alignment between the analog image and the vector map in the present embodiment. Therefore, the scale of the operation device is small. In addition, there is an effect that the processing time can be shortened.

As described above, the geographic information system according to the present embodiment is configured so that simple arithmetic processing can be performed based on a user's specification. Therefore, software (or hardware) configuring the system is used. )
Can be reduced in size, and an inexpensive and easy-to-use system can be realized. In other words, it is possible to realize a geographic information system in which the user does not spend time and effort in operation, and the apparatus can easily perform adjustment when superimposing and displaying the analog image and the vector map. That is.

The above embodiment is merely an example of the present invention, and it goes without saying that the present invention is not limited to this. Further, as described above, the image position adjusting method according to the present invention allows a program for realizing the image position to be recorded on a medium and distributed as a product. Including.

[0031]

As described above, according to the present invention, when an image such as an aerial photograph (analog image) is superimposed on a vector map, the position is determined in advance. Since the image or map is adjusted by enlarging / reducing based on the point where it is located, there is no shift when performing enlargement / reduction or rotation at the time of fine adjustment as in the past. If there is a point whose position is known, the image and the map can be easily overlapped, and the superimposition operation in the geographic information system can be simplified and the time can be reduced.

That is, according to the present invention, the interface with the user is improved, and the amount of processing becomes enormous according to the mechanical processing by software or hardware. Since it is configured to proceed to the next step upon receiving an instruction based on the determination, the system can be simplified and the software can be simplified when the device is realized, and a stable system can be achieved.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration example of a geographic information system provided with a superimposed display function according to the present invention.

FIG. 2 is a diagram illustrating an example of an operation screen in a function of adjusting an analog image and a vector map for performing superimposed display according to the present invention.

FIG. 3 is an explanatory diagram showing a procedure for calculating an image size in a function of adjusting an analog image and a vector map for performing superimposed display according to the present invention.

FIG. 4 is a flowchart illustrating an example of a processing procedure in a function of adjusting an analog image and a vector map for performing superimposed display according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 map information file 101 image information file 102 personal computer 103 file input / output unit 104 image / map superimposition adjustment processing unit 105 superimposition display preprocessing unit 106 adjustment input processing unit 107 superimposition display control unit 108 superimposition display information management unit 109 input device 110 Display device 111 Printing device 200 Image / map display screen 300 Size before adjustment 301 Size after adjustment

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 1/387 G09G 5/36 520D F-term (Reference) 2C032 HC21 5B050 AA01 BA02 BA07 BA17 BA18 CA07 EA19 FA02 FA09 5C076 AA12 AA21 AA22 CA02 5C082 AA01 BA14 BA20 BA27 BB15 CA31 CA33 CA34 CA42 CA52 CA56 CB01 CB06 DA87 MM02 MM09

Claims (7)

[Claims] 1. An image position adjusting method for adjusting the position of an image when displaying an analog image and a vector map in a superimposed manner in a geographic information system, wherein the analog image to be displayed is aligned with the vector map. In doing so, the first display is performed in a state where the first point on the analog image and the vector map known in advance is aligned, and on this display image, the first display on the analog image and the vector map is performed. An image position adjustment method, wherein the analog image and the vector map are superimposed using two points. 2. The image position adjusting method according to claim 1, wherein the analog image and the first point on the vector map which are known in terms of position are acquired by a user's specification. 3. The image position adjusting method according to claim 1, wherein the second point on the analog image and the second point on the vector map are obtained by a user's specification. 4. When the analog image and the vector map are superimposed using the second point on the analog image and the vector map, the analog image is scaled up and down in the vertical and horizontal directions. The image position adjusting method according to claim 1. 5. An image position adjusting device for adjusting a position of an image when displaying an analog image and a vector map in a superimposed manner in a geographic information system, a storage unit for storing the analog image, A storage unit that stores the vector map, a file input / output unit, a processing unit for input from the user, and when the analog image to be displayed is aligned with the vector map, the analog image specified by the user and A superimposed display processing unit for performing an initial display in a state where the first point on the vector map is aligned, and using the analog image and the second point on the vector map designated by the user on the display image. And a superimposition adjustment processing unit for superimposing the analog image and the vector map. 6. An image position adjusting apparatus, comprising: a superimposed display information management unit that manages an adjustment processing result by the superimposition adjustment processing unit, in addition to the units described in claim 5. 7. A recording medium storing a program for realizing the image position adjusting method according to claim 1. Description: