JP2003177736A - Image display system, image display program and image display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display an image in an arbitrary display magnification, and to carry out the expansion and contraction of an arbitrary quantity and movement of the image, the display of place name or link to other data, cooperation among a plurality of images, and calculation of path length or area in the arbitrary display magnification. <P>SOLUTION: Position coordinates such as longitude and latitude associated with each recording dot of imaging data are stored in image databases 10, 50 and 51, and the longitude and the latitude are mapped in each display dot of the display data generated on the basis of the position coordinates. When generating the next display data, data are read from the image database on the basis of the longitude and the latitude associated with the display dot. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an aerial photograph, a medical X-ray photograph, a non-destructive inspection X-ray photograph, a scanning micrograph, a remote sensing data image, a super-high-precision scan image, a road surface image, a tunnel inner wall image, and the like. The present invention relates to an image display system, an image display program, and an image display method for displaying various kinds of captured data such as a high-precision photographic image and a data logger collected data image.

[0002]

2. Description of the Related Art Conventionally, many image display systems have been proposed. Such a conventional image display system,
Basically, the image data is stored, read out as appropriate, and displayed on the display means.

As such an image display system, for example, a road map display system is widely used by utilizing the Internet. Then, in this road map display system, a road map is displayed by selecting a preset display magnification. Further, in the conventional road map display system, various information can be allocated on the map by using the clickable map function.

[0004]

However, the conventional image display system represented by such a road map display system has the following problems.

First, in the conventional image display system, the display magnification is arbitrarily selected, and the image is displayed at a resolution matching the magnification, or at any display magnification while maintaining the resolution. You cannot move the image by the amount. Further, it is not possible to perform an operation of superimposing and displaying specific information on an image at an arbitrary display magnification.

Secondly, in the conventional image display system, the image data to be used is not universal, such as a road map or a residential map. That is, the image data of the conventional image display system is converted into vector data for each specific purpose, or the vector data is converted into bitmap data, and cannot be used for different purposes.

Thirdly, in the conventional image display system, even if the image can be displayed at an arbitrary magnification,
Unlike the so-called clickable map, other data cannot be linked at this arbitrary display magnification. That is, in the conventional image display system, the link on the image cannot be operated at any display magnification.

Fourthly, in the conventional image display system, it is not possible to coordinate a plurality of image data. For example, you can use the survey results on a road map on a residential map,
You cannot do the opposite. As a result, all matching of information obtained from different images is a task of the final user.

Fifth, the conventional image display system cannot easily calculate the length or area of the route on the image.

The present invention has been made to solve the above problems, and an object thereof is to obtain an image display system, an image display program, and an image display method capable of displaying an image at an arbitrary display magnification. To do. Further, in another invention, further, at any display magnification, scaling or moving an arbitrary amount of an image, displaying a place name or a link to other data, linking a plurality of images, calculating a route length or an area. An object is to obtain an image display system, an image display program, and an image display method that can be performed.

[0011]

An image display system according to the present invention stores image pickup data as aggregated data of display information for each recording dot, and also stores position coordinates of the image pickup data of each recording dot in an image pickup object. A display for reading display information of an arbitrary range of recorded dots from the image database based on the image database and the position coordinate, and generating display data of a predetermined display dot number with the display information as it is or by reducing the number of dots. Data generating means, display means for displaying the display data,
It is equipped with.

With this configuration, it is possible to read an arbitrary range from the image database based on the position coordinates and display it on the display means. Therefore, it is displayed at an arbitrary display magnification based on the position coordinates, and
In the display state at that arbitrary magnification, it can be moved by an arbitrary amount of change based on the position coordinates.

Moreover, the display information is read out from the image pickup data stored as the display information for each recording dot in the image database, or the display data is generated by reducing the number of dots. The image can be displayed at.
Therefore, the resolution of the display image does not become rough unlike the case where the number of dots of the image pickup data stored in the image database is increased to generate the display data.

In the image display system according to the present invention, position coordinate mapping means for generating position coordinate mapping data in which each display dot of the display data is associated with a position coordinate in the image pickup target, and the image is displayed on the display means. Input means for inputting display switching information such as enlargement / reduction or movement based on the display data, and a position for designating display data to be generated next based on the position coordinate mapping data and the display switching information. Position coordinate generation means for generating coordinates and outputting the coordinates to the display data generation means.

If this configuration is adopted, the position coordinates are generated based on the position coordinates of the image pickup target for each display dot of the display data and the display switching information input to the input means, and the display data generating means generates the next position coordinates. The display data of can be generated. Therefore, for example, the display information is read out from the image database at the time of start-up, and the user simply operates the input means in the state where the display is made to enlarge or reduce or move the range of the recording dots read from the image database. Therefore, the desired range can be easily displayed on the display means.

In the image display system according to the present invention, the second image pickup data relating to the same object as the image pickup data is stored as a set data of the display information for each recording dot, and the image pickup object of the image pickup data of each recording dot is stored. A second image database for storing position coordinates is provided, and the display data generating means reads display information from the image database and the second image database using the same position coordinates.

If this configuration is adopted, the display information is read from the image database and the second image database using the same position coordinates, so that the display ranges of the respective display data are made to coincide with each other and a plurality of image pickup data are obtained. You can compare each other. Therefore, for example, it is possible to easily understand what kind of land development was done by comparing aerial photographs of a plurality of terrains having different imaging dates on the display means.

The image display system according to the present invention stores other image pickup data of which the image pickup object is a part of the image pickup data as collective data of display information for each recording dot, and the image pickup of each recording dot. Provided is another image database that stores the position coordinates of the data in the imaging target, the display data generating means, when the position coordinates of the cut-out range is within the range of the imaging data, reads the image from the image database, When the position coordinates of the range to be cut out are outside the range of the imaging data, the image is read from the other image database.

If this configuration is adopted, the display information is read from the image database or the second image database using the same position coordinates, so that the plurality of image data stored in the two image databases can be read. Can be interlocked. As a result, it is possible for the user to appear as if the image pickup data is stored at the resolution of the image pickup data of the first image database in the range of the image pickup data of the second image database. Moreover, in reality, with high resolution image data,
Since the image data with low resolution is stored as a separate database, the effect can be obtained with a small amount of data.

In the image display system according to the present invention, the image database stores a plurality of pieces of image pickup data such that the ratio of the length of the recording dots to the length of the image pickup target imaged on each of the recording dots is substantially constant. Positional coordinate mapping means for generating the positional coordinate mapping data in which the recording dots are divided and stored, and each display dot of the display data is associated with the positional coordinate in the imaging target, and the selection information of the display dot of the display means The input means to be input and the route passing through the two or more display dots selected by the selection information are specified, and the number of display dots on this route and the scale of the position coordinate mapping data are used. Path length calculation means for calculating the length of the path and outputting it to the display means.

If this configuration is adopted, the length of the path passing through the display dots can be calculated and displayed based on the selection information of the two or more display dots input to the input means.
Therefore, the user can obtain the length of the route simply by displaying the desired display data on the display means and selecting the display dot in that state.

In the image display system according to the present invention, the image database stores a plurality of image pickup data so that the ratio of the area of the recording dots to the area of the image pickup target imaged on each recording dot is substantially constant. Positional coordinate mapping means for generating the positional coordinate mapping data in which the recording dots are divided and stored, and each display dot of the display data is associated with the positional coordinate in the imaging target, and the selection information of the display dot of the display means An area is specified using the input means to be input and two or more display dots selected by the selection information, and the number of display dots in this area and the scale of the position coordinate mapping data are used. Area calculation means for calculating the area of the region and outputting the calculated area to the display means.

If this configuration is adopted, it is possible to calculate and display the area of the range specified based on the selection information of the two or more display dots input to the input means. Therefore, the user can obtain the desired area by simply displaying the desired display data on the display means and selecting the display dot in that state.

In the image display system according to the present invention, in the image database, an aerial photograph corrected on the basis of regional base data in which the coordinates of each actual point are determined or a plane rectangular coordinate system is used as the imaging data. In addition to being stored, the coordinates in the regional infrastructure data are stored as the position coordinates of each of the recording dots.

If this structure is adopted, the length and area of structures, rivers, etc. captured in aerial photographs can be easily measured. In particular, for example, if image data of an aerial photograph is generated at a resolution of about 25 cm, it is possible to calculate an approximate value of land or real estate, and it is possible to judge the real estate price and the like very easily.

In the image display system according to the present invention, in the image database, an aerial photograph corrected on the basis of regional infrastructure data in which the coordinates of each actual point is determined or a plane rectangular coordinate system is used as the imaging data. Position coordinates that are stored and that store the coordinates in the regional base data as the position coordinates of each of the recording dots, and generate position coordinate mapping data that associates each display dot of the display data with the position coordinates of the imaging target. At least one selected from the mapping means and the structure, the name of the owner or user of the structure, the symbol or mark of the structure or the owner or user of the structure, and the place name or map symbol. One type is stored as a map object and the regional base of each map object is stored. A map object database that stores the position coordinates of the data, and a map object search unit that extracts the map objects in the display data from the map object database using the position coordinates, and further, the display unit, The extracted map object is displayed in an overlapping manner on a display dot specified by comparison between the coordinates of the extracted map object and the position coordinate mapping data or in the vicinity thereof.

By adopting this configuration, it is possible to read the aerial photograph imaging data stored in the image database based on the coordinates and display it on the display means. Moreover, it is possible to associate coordinates with each display dot of the display data displayed on the display means, extract from the map object database based on these coordinates, and display this on the display data.

Therefore, regardless of the display magnification of the display data, the map object can be displayed overlaid on the display data, and the user can take an image at an appropriate display scale on the display screen with limited display means. The data can be displayed and the information of the display area can be displayed. As a result, it is possible to obtain desired regional information based on the map object in the same way as the map, and moreover it is necessary to limit the amount of information in order to pursue legibility based on the captured data. A lot of information can be compositely obtained on one screen.

The image display system according to the present invention is provided with input means for inputting selection information of display dots of the display means, and the map object searching means is based on the selection information and the position coordinate mapping data. The range of position coordinates to be displayed is specified, the map object database is searched using the range of position coordinates, and map objects are extracted.

By adopting this configuration, it is possible to specify the range of coordinates by the input means, and display the map object in the range overlaid on the display data. As a result, the map object can be overlapped with the display data only when it is needed and when it is needed, and the display processing time can be shortened when it is not necessary, so that the user at the time of processing such as switching or moving the display magnification can perform it. The convenience of can be improved.

The image display system according to the present invention is provided with a reproduction database for storing reproduction data relating to the map object, and the map object database stores a link to the reproduction data for each of the map objects. Input means for inputting selection information of the map object and a link of the map object selected by the selection information are extracted from the map object database, and predetermined reproduction data on the reproduction database is extracted based on this link. And a reproducing means for reproducing.

If this configuration is adopted, through the map object displayed overlaid on the image data of the aerial photograph,
For example, information about building owners and users can be provided in multiple ways. As a result, it is possible to construct a very convenient system by aggregating the information of each region with the aerial image pickup data as the axis.

The image display program according to the present invention causes a computer to store image pickup data as aggregated data of display information for each recording dot, and an image database for storing position coordinates of the image pickup data of each recording dot in an image pickup target. Display data generating means for reading display information of recording dots in an arbitrary range from the image database based on the position coordinates, and generating display data with a predetermined number of display dots without changing the display information. And are realized and the display data is displayed on the display means.

If this configuration is adopted, it is possible to read an arbitrary range from the image database based on the position coordinates and display it on the display means. Therefore, it is displayed at an arbitrary display magnification based on the position coordinates, and
In the display state at that arbitrary magnification, it can be moved by an arbitrary amount of change based on the position coordinates.

Moreover, since the display data is generated by directly displaying the display information read from the image pickup data stored as the display information for each recording dot in the image database or by reducing the number of dots, the display resolution in the display means. The image can be displayed at.
Therefore, the resolution of the display image does not become rough unlike the case where the number of dots of the image pickup data stored in the image database is increased to generate the display data.

The image display program according to the present invention includes: a position coordinate mapping means for generating, in the computer, position coordinate mapping data in which each display dot of the display data is associated with a position coordinate in the imaging target; Input means for inputting display switching information such as enlargement / reduction or movement based on the display data displayed on the screen, and display data to be generated next based on the position coordinate mapping data and the display switching information. And position coordinate generating means for generating the position coordinates for outputting and outputting this to the display data generating means.

If this configuration is adopted, the position coordinates are generated on the basis of the position coordinates of the image pickup target for each display dot of the display data and the display switching information input to the input means, and the display data generating means generates the next position coordinates. The display data of can be generated. Therefore, for example, the display information is read out from the image database at the time of start-up, and the user simply operates the input means in the state where the display is made to enlarge or reduce or move the range of the recording dots read from the image database. Therefore, the desired range can be easily displayed on the display means.

The image display program according to the present invention stores, in the computer, second image pickup data relating to the same object as the image pickup data as aggregate data of display information for each recording dot, and the image pickup data of each recording dot. A second image database for storing the position coordinates of the image pickup target, and read the display information from the image database and the second image database using the same position coordinates for the display data generating means. To operate.

If this configuration is adopted, the display information is read from the image database and the second image database using the same position coordinates, so that the display ranges of the respective display data are made to coincide with each other and a plurality of image pickup data are obtained. You can compare each other. Therefore, for example, it is possible to easily understand what kind of land development was done by comparing aerial photographs of a plurality of terrains having different imaging dates on the display means.

The image display program according to the present invention causes the computer to store other image pickup data, of which the image pickup object of the image pickup data is a part thereof, as aggregate data of display information for each recording dot, and to record each image. Another image database that stores the position coordinates of the dot of the imaged data in the imaged object is realized, and if the position coordinate of the cut-out range is within the range of the imaged data with respect to the display data generation unit, The image is read from the image database, and when the position coordinates of the cut-out range are out of the range of the imaging data, the image is read from the second image database.

If this configuration is adopted, the display information is read from the image database or the second image database using the same position coordinates, so that the plurality of image data stored in the two image databases are stored. Can be interlocked. As a result, it is possible for the user to appear as if the image pickup data is stored at the resolution of the image pickup data of the first image database in the range of the image pickup data of the second image database. Moreover, in reality, with high resolution image data,
Since the image data with low resolution is stored as a separate database, the effect can be obtained with a small amount of data.

In the image display program according to the present invention, a plurality of image pickup data are stored in the image database so that the ratio of the length of the recording dot to the length of the image pickup target imaged on each recording dot is substantially constant. Position coordinate mapping means for generating the position coordinate mapping data in which the display dots of the display data are associated with the position coordinates of the imaging target, and the display of the display means is displayed. The input means for inputting the dot selection information and the route passing through the two or more display dots selected by the selection information are specified, and the number of display dots on this route and the position coordinate mapping data are specified. And a path length calculation means for calculating the length of the path using the reduced scale and outputting the calculated length to the display means.

If this configuration is adopted, the length of the path passing through the display dots can be calculated and displayed based on the selection information of the two or more display dots input to the input means.
Therefore, the user can obtain the length of the route simply by displaying the desired display data on the display means and selecting the display dot in that state.

In the image display program according to the present invention, a plurality of image pickup data are stored in the image database so that the ratio of the area of the recording dots to the area of the image pickup target imaged on each recording dot is substantially constant. Position coordinate mapping means for generating the position coordinate mapping data in which the display dots of the display data are associated with the position coordinates of the imaging target, and the display of the display means is displayed. An area is specified using an input means for inputting dot selection information and two or more display dots selected by the selection information, and further, the number of display dots in this area and the position coordinate mapping data are used. And an area calculation means for calculating the area of the region using the reduced scale and outputting the calculated area to the display means.

By adopting this configuration, it is possible to calculate and display the area of the range specified based on the selection information of the two or more display dots input to the input means. Therefore, the user can obtain the desired area by simply displaying the desired display data on the display means and selecting the display dot in that state.

In the image display program according to the present invention, in the image database, the aerial photograph corrected based on the regional base data in which the coordinates of each actual point are determined or the plane rectangular coordinate system is used as the imaged data. In addition to being stored, the coordinates in the regional base data are stored as the position coordinates of each recording dot.

If this configuration is adopted, the length and area of structures, rivers, etc. captured in aerial photographs can be easily measured. In particular, for example, if image data of an aerial photograph is generated at a resolution of about 25 cm, it is possible to calculate an approximate value of land or real estate, and it is possible to judge the real estate price and the like very easily.

In the image display program according to the present invention, in the image database, the aerial photograph corrected based on the regional base data in which the coordinates of each actual point are determined or the plane rectangular coordinate system is used as the imaging data. Along with the storage, the coordinates in the regional base data are stored as the position coordinates of each recording dot, and the computer generates position coordinate mapping data in which each display dot of the display data is associated with the position coordinate of the imaging target. Position coordinate mapping means to be selected, structure, name of the owner or user of the structure, symbol or mark of the structure, owner or user of the structure, place name or map symbol, etc. At least one of the created map objects is stored as a map object, and A map object database that stores the position coordinates of the regional infrastructure data of the project, and map object search means that extracts the map objects in the display data from the map object database using the position coordinates, and further, For the display means, the extracted map object,
The operation is performed so that the display dot specified by comparing the coordinates with the position coordinate mapping data or the vicinity thereof is displayed in an overlapping manner.

By adopting this configuration, it is possible to read out the aerial photograph imaging data stored in the image database based on the coordinates and display it on the display means. Moreover, it is possible to associate coordinates with each display dot of the display data displayed on the display means, extract from the map object database based on these coordinates, and display this on the display data.

Therefore, regardless of the display magnification of the display data, the map object can be displayed overlaid on the display data, and the user can take an image at an appropriate display scale on the display screen with limited display means. The data can be displayed and the information of the display area can be displayed. As a result, it is possible to obtain desired regional information based on the map object in the same way as the map, and moreover it is necessary to limit the amount of information in order to pursue legibility based on the captured data. A lot of information can be compositely obtained on one screen.

The image display program according to the present invention is, on the map object search means, a range of position coordinates to be displayed based on the selection information of the display dot of the display means input to the input means and the position coordinate mapping data. Is specified, and the range of the position coordinates is used to search the map object database to extract the map object.

If this configuration is adopted, the range of the coordinates can be specified by the input means, and the map object within the range can be displayed on the display data in an overlapping manner. As a result, the map object can be overlapped with the display data only when it is needed and when it is needed, and the display processing time can be shortened when it is not necessary, so that the user at the time of processing such as switching or moving the display magnification can perform it. The convenience of can be improved.

The image display program according to the present invention causes the computer to realize a reproduction database for storing reproduction data related to the map object, and the map object database links each reproduction object with the reproduction data. Remember, and
Input means for inputting selection information of the map object to the computer, and a link of the map object selected by the selection information is extracted from the map object database, and based on the link, a predetermined on the reproduction database is extracted. And reproducing means for reproducing the reproduction data of.

If this configuration is adopted, through the map object displayed overlaid on the image data of the aerial photograph,
For example, information about building owners and users can be provided in multiple ways. As a result, it is possible to construct a very convenient system by aggregating the information of each region with the aerial image pickup data as the axis.

In the image display method according to the present invention, the image pickup data is stored as a set of display information for each recording dot, and the position coordinates of the image pickup data of each recording dot in the image pickup object are stored from the image database. The display information of the recording dots in an arbitrary range is read out based on the position coordinates, and the display information of the predetermined display dot number is generated with the above display information as it is or by reducing the number of dots,
The above display data is displayed.

If this method is adopted, it is possible to read an arbitrary range from the image database based on the position coordinates and display it on the display means. Therefore, it is displayed at an arbitrary display magnification based on the position coordinates, and
In the display state at that arbitrary magnification, it can be moved by an arbitrary amount of change based on the position coordinates.

In addition, since the display information is read out from the image data stored as the display information for each recording dot in the image database, or the display data is generated by reducing the number of dots, the display resolution in the display means. The image can be displayed at.
Therefore, the resolution of the display image does not become rough unlike the case where the number of dots of the image pickup data stored in the image database is increased to generate the display data.

The image display method according to the present invention generates position coordinate mapping data in which each display dot of the display data is associated with the position coordinate of the image pickup object, and the display data input to the input means is used as a reference. Based on the display switching information such as enlargement / reduction or movement and the position coordinate mapping data described above, position coordinates for designating display data to be generated next are generated, and using this position coordinate, an arbitrary range of the image database is generated. The display information of recording dots is read out.

If this method is adopted, the position coordinates are generated based on the position coordinates of the image pickup target for each display dot of the display data and the display switching information input to the input means, and the display data generating means generates the next position coordinates. The display data of can be generated. Therefore, for example, the display information is read out from the image database at the time of start-up, and the user simply operates the input means in the state where the display is made to enlarge or reduce or move the range of the recording dots read from the image database. Therefore, the desired range can be easily displayed on the display means.

In the image display method according to the present invention, the second image pickup data relating to the same object as the image pickup data is stored as a set data of the display information for each recording dot, and the image pickup object of the image pickup data of each recording dot is stored. From the second image database that stores the position coordinates, read the display information of the recording dots in a predetermined range based on the position coordinates, together with the display data based on the display information read from the image database, the second image database The display data based on the display information read from is displayed.

If this method is adopted, the display information is read from the image database and the second image database using the same position coordinates, so that the display ranges of the respective display data are made to coincide with each other and a plurality of image data are obtained. You can compare each other. Therefore, for example, it is possible to easily understand what kind of land development was done by comparing aerial photographs of a plurality of terrains having different imaging dates on the display means.

The image display method according to the present invention stores the image pickup data as aggregate data of display information for each recording dot, and also stores the position coordinates of the image pickup data of each recording dot in the image pickup object, or Other image pickup data, of which the image pickup target of the image pickup data is a part thereof, is stored as aggregate data of display information for each recording dot, and another position coordinate of the image pickup data of each recording dot in the image pickup target is stored One of the image databases is selected based on the position coordinates, the display information of the recording dots in an arbitrary range is read from the selected image database based on the position coordinates, and the display information is left as it is or the number of dots is reduced. Display data of a predetermined number of display dots is generated, and the above display data is displayed.

If this method is adopted, the display information is read from the image database or the second image database using the same position coordinates, so that the plurality of image data stored in the two image databases can be read. Can be interlocked. As a result, it is possible for the user to appear as if the image pickup data is stored at the resolution of the image pickup data of the first image database in the range of the image pickup data of the second image database. Moreover, in reality, with high resolution image data,
Since the image data with low resolution is stored as a separate database, the effect can be obtained with a small amount of data.

In the image display method according to the present invention, the image pickup data is stored as a set data of display information for each recording dot, and the length of the recording dot and the length of the image pickup target imaged on each recording dot are stored. The display information of the recording dots in an arbitrary range is read based on the position coordinates from the image database that stores the position coordinates of the image pickup data of each recording dot in the image pickup target while being stored so as to be substantially constant. , The display information as it is or by reducing the number of dots to generate display data of a predetermined number of display dots, displaying the display data on the display means, and corresponding each display dot of the display data with the position coordinates of the imaging target. The attached position coordinate mapping data is generated, the route is specified based on the selection information of the display dot of the display means, and further, on the route. To calculate the length of the pathway by using the scale on the number of display dots and the position coordinate mapping data, the operator displays on the display means the result of this calculation.

By adopting this method, the length of the path passing through the display dots can be calculated and displayed based on the selection information of two or more display dots input to the input means.
Therefore, the user can obtain the length of the route simply by displaying the desired display data on the display means and selecting the display dot in that state.

In the image display method according to the present invention, the image pickup data is stored as a set data of display information for each recording dot, and the area of the recording dot and the area of the image pickup target imaged on each recording dot are stored. While storing so that the ratio is substantially constant, from the image database that stores the position coordinates of the imaging data of each recording dot in the imaging target, read the display information of the recording dots in an arbitrary range based on the position coordinates, The display information as it is or the number of dots is reduced to generate display data having a predetermined number of display dots, the display data is displayed on the display means, and each display dot of the display data is associated with a position coordinate in the imaging target. Position coordinate mapping data is generated, an area is specified based on the display dot selection information of the display means, and The area is calculated using the scale on the number of display dots and the position coordinate mapping data, the operator displays on the display means the result of this calculation.

If this method is adopted, it is possible to calculate and display the area of the range specified based on the selection information of the two or more display dots input to the input means. Therefore, the user can obtain the desired area by simply displaying the desired display data on the display means and selecting the display dot in that state.

In the image display method according to the present invention, in the image database, an aerial photograph corrected on the basis of regional base data in which the coordinates of each actual point are determined or a plane rectangular coordinate system is used as the imaged data. In addition to being stored, the coordinates in the regional base data are stored as the position coordinates of each of the recording dots.

By adopting this method, it is possible to easily measure the length and area of structures, rivers, etc. taken in an aerial photograph. In particular, for example, if image data of an aerial photograph is generated at a resolution of about 25 cm, it is possible to calculate an approximate value of land or real estate, and it is possible to judge the real estate price and the like very easily.

In the image display method according to the present invention, the image data of the aerial photograph corrected based on the regional base data in which the coordinates of each actual point are determined or the plane rectangular coordinate system is used to display the display information for each recording dot. The display information of the recording dots in an arbitrary range is read out based on the position coordinates from the image database that stores the coordinates of each recording dot in the regional base data as well as the collective information, and the display information is not changed or the number of dots is changed. To generate display data having a predetermined number of display dots, display the display data on the display means, and generate position coordinate mapping data in which each display dot of the display data is associated with the position coordinate of the imaging target. , Structure, name of structure owner or user, structure, structure owner or user, etc. The display data is stored from a map object database that stores at least one selected from symbols or marks and place names or map symbols as a map object, and also stores the position coordinates of the above-mentioned regional base data of each map object. A map object inside is extracted, and the extracted map object is displayed so as to be superimposed on a display dot specified by comparison between the coordinates of the map object and the position coordinate mapping data or in the vicinity thereof.

By adopting this method, it is possible to read out the aerial photograph imaging data stored in the image database based on the coordinates and display it on the display means. Moreover, it is possible to associate coordinates with each display dot of the display data displayed on the display means, extract from the map object database based on these coordinates, and display this on the display data.

Therefore, regardless of the display magnification of the display data, the map object can be displayed overlaid on the display data, and the user can take an image at an appropriate display scale on the display screen with limited display means. The data can be displayed and the information of the display area can be displayed. As a result, it is possible to obtain desired regional information based on the map object in the same way as the map, and moreover it is necessary to limit the amount of information in order to pursue legibility based on the captured data. A lot of information can be compositely obtained on one screen.

In the image display method according to the present invention, the map object extraction processing specifies a range of position coordinates to be displayed based on the display dot selection information input to the input means and the position coordinate mapping data, The range of the position coordinates is used to search the map object database to extract the map object.

If this method is adopted, the range of the coordinates can be specified by the input means, and the map object in the range can be displayed overlaid on the display data. As a result, the map object can be overlapped with the display data only when it is needed and when it is needed, and the display processing time can be shortened when it is not necessary, so that the user at the time of processing such as switching or moving the display magnification can perform it. The convenience of can be improved.

In the image display method according to the present invention, the map object database stores a link to the reproduction data for each map object, and the link is created based on the selection information of the map object input to the input means. Based on the link, predetermined reproduction data is reproduced from a reproduction database that stores reproduction data related to the map object.

If this method is adopted, through the map object displayed overlaid on the image data of the aerial photograph,
For example, information about building owners and users can be provided in multiple ways. As a result, it is possible to construct a very convenient system by aggregating the information of each region with the aerial image pickup data as the axis.

[0077]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an image display system, an image display program and an image display method according to the present invention will be described below with reference to the drawings. The image display program and the image display method will be described in the description of the configuration or operation of the image display system.

Embodiment 1. FIG. 1 is a hardware configuration diagram showing an image display system according to the first embodiment of the present invention. The image display system according to the first embodiment is an image display system that uses topographic photographs.

In this image display system, a built-in recording medium 1 such as a hard disk for selectively storing a program and data used by the program in file units.
And a central processing unit (CPU: Ce) that executes the program.
general processing unit 2),
A main component is a so-called computer in which a memory 3 for temporarily storing data and a program when the central processing unit 2 executes the program is connected to each other by a system bus 4. The above-mentioned program executed by the central processing unit 2 is received via a network such as the Internet, or is copied from a computer-readable recording medium such as a compact disc so that the built-in recording medium 1 can be obtained. Can be stored on.

The image display system further includes a liquid crystal monitor 5 as a display device, a keyboard 6 as an input device, and a pointing device 7 as an input device. These input / output devices 5, 6 and 7 are input / output ports. It is connected to the system bus 4 via 8.

Further, the system bus 4 is connected to a video RAM 9 in which display data to be displayed on the liquid crystal monitor 5 is written as color information for each display dot. The color information for each display dot written in the video RAM 9 is repeatedly output to the liquid crystal monitor 5 at predetermined intervals, whereby a predetermined image can be displayed on the liquid crystal monitor 5. The display dot color information includes color components, brightness information, saturation information, and brightness information.

FIG. 2 is a diagram showing a list of program files stored in the built-in recording medium 1 of FIG. 1 and data files used by the programs.

The image database 10 stores imaging data obtained by scanning an aerial photograph of the terrain.
The image pickup data is stored as aggregate data of color information for each recording dot. As a result, the color information of each recording dot can be stored and read out without depending on the color information of other recording dots.

Further, in this image database 10, coordinates are associated with each recording dot as position coordinates. Specifically, the Japanese archipelago is divided into nine areas, and the latitude and longitude of the regional infrastructure data defined as a two-dimensional orthogonal coordinate system in which the longitude and latitude are orthogonal to each area are associated with each recording dot. ing. As a result, the color information of each recording dot can be read out independently of other recording dots based on the latitude and longitude regardless of the relative dot position on the imaged data. Note that, for example, when the range of the map image is narrow, or when the error does not matter so much, the latitude and longitude itself may be used instead of the coordinates.

In this regional infrastructure data, for example, in the case of Kanto Plain, the origin of coordinates is set in Noda City, Chiba Prefecture. Therefore, each point in the Kanto plain can be associated with a position coordinate in the two-dimensional Cartesian coordinates with this Noda city as the origin.

By the way, an actual aerial photograph is taken by an airplane flying at an altitude of several hundred meters. When it is attempted to generate imaging data of the terrain over the entire Kanto plain or the entire 23 wards of Tokyo using this, a plurality of aerial photographs must be connected to form one two-dimensional plane. Therefore, the imaged data stored in the image database 10 is corrected for orthorectification by an optical distortion caused by a shooting angle from an airplane or a part of a plurality of adjacent photographs is overlapped with each other. Processing is performed so that the images of the overlapped portions are matched with each other. As a result, the size of the image data including structures and the like is reduced substantially evenly to be imaged data.

Further, since the display data recorded in the video RAM 9 is generally recognized as the display dots arranged in a matrix in the vertical and horizontal directions, each display dot of the image pickup data is also arranged in the vertical and horizontal matrix. Scanning as arranged information. Moreover, assuming that each recording dot is a substantially square in the imaged data this time,
One side scans an aerial photograph at a resolution corresponding to 25 cm on the two-dimensional plane of the regional infrastructure data. In this way, by allocating recording dots on a fixed length or range on the regional infrastructure data, which is a two-dimensional rectangular coordinate system, the length of one side of the recording dots and the corresponding two-dimensional rectangular coordinate system on the terrain And the area of the recording dot and the corresponding area on the terrain in the two-dimensional orthogonal coordinate system can be made proportional.

Note that such high-resolution image data differs depending on the number of colors in the color information, but at least several tens of G even if it is only in the 23 wards of Tokyo.
The data size is about bytes. Therefore, in this embodiment, the image data is stored in the image database 10 after being compressed by a compression method having a high compression rate such as a wavelet method. By the way, when compressed by the wavelet method, the image of the topographic photograph of the 23 wards of Tokyo based on the resolution equivalent to 25 cm has a file size reduced from 32 Gbytes to 1.7 Gbytes with almost no deterioration.

As coordinate information of each recording dot,
All the recording dots of the image database 10 may be provided as targets, or only some of the recording dots spatially having a specific positional relationship may be provided as targets. In the latter case, the image database 10
The coordinate information of each recording dot to which the inner coordinate information is not associated may be generated by calculation during the execution processing of the image cutting program 11 described later by the central processing unit 2.
For example, if the topographic photograph is converted into data in the above-mentioned two-dimensional rectangular coordinate system, the distance between two recorded dots whose longitude or latitude is known in advance is divided by the value of "the number of pixels between them + 1". It can be considered that the recording dots are associated with each other, and by utilizing this relationship, the coordinate information of each recording dot to which the coordinate information is not associated can be obtained by calculation.

The image cutout program 11 is executed by the central processing unit 2 to realize an image cutout means in the image display system. When the two coordinates are designated, the image cutting-out means reads out the color information of all the recording dots in the quadrangle whose diagonal is the two coordinates from the image database 10, for example. It should be noted that the number of designated coordinates is determined according to the outer shape of the read image data, etc. For example, when cutting out in a triangular shape, three coordinates may be designated.

The image reducing program 12 is executed by the central processing unit 2 to realize image reducing means in the image display system. The image reducing means reduces the color information of the recording dots read by the image cutting program 11 to display data of a predetermined number of display dots, and writes this display data in the video RAM 9. When the number of read recording dots matches the number of display dots read, the data is directly written in the video RAM 9 as display data without being reduced.

As a method of reducing the size of the read image data, there is a method of reducing the number of dots. For example, when reducing to n / m (n and m are natural numbers, n <m), n recording dots are selected from m consecutive recording dots according to a predetermined extraction rule, and the color information is selected. It may be that of the display dots, or the average color information of some recording dots may be the color information of each display dot. Further, when there is no recording dot having the same coordinate, the color information of the display dot may be color information obtained by adding weights according to the coordinate difference between the peripheral recording dot and the display dot.

In the first embodiment, the image cutting means and the image reducing means correspond to the display data generating means.
When the display data is generated by interpolating dots at the time of enlargement, for example, by generating the display data with the number of the recorded dots read from the image database 10 as it is or with the reduced number of dots. Unlike the above, the image quality of the display data can be the resolution obtained by the number of display dots.

Since the image data is read from the image database 10 based on the coordinates every time the display data is scaled or moved, the image quality of each display data is improved even if the display is scaled or moved. It can be maintained above a certain level. In particular, even if the color information of a plurality of recording dots is added with a predetermined weighting to generate each display dot of the display data, the image quality is not deteriorated by the repetition of the adding process.

The position coordinate mapping program 13 is executed by the central processing unit 2 to realize a position coordinate mapping means in the image display system. The position coordinate mapping means associates all the display dots of the display data with the coordinates in the regional base data, and writes the position coordinate mapping data as the mapping file 14 in the built-in recording medium 1 or the memory 3.

As the coordinates associated with each display dot, basically, the coordinates changing with the number of dots divided between the display dots on the four sides of the display data are used as the reference. Allotted to dots. In addition, when n recording dots are selected from m recording dots that are continuous in the image reduction process according to a predetermined extraction rule, the coordinates of the recording dots may be associated with the display dots. .

In the latter case, even if the number of dots of the image pickup data is reduced to generate the display data, there is always a recording dot having the same coordinates as the coordinates of the display dot, so that the image generation process is easy. In addition, no matter which display dot on the display data is selected, the image read from the image database 10 does not deviate from the designated coordinates.

The output destination selecting program 15 is executed by the central processing unit 2 to realize an output destination selecting means in the image display system. When the display dot selection information is input from the keyboard 6 or the pointing device 7, the output destination selection means determines the object using the display dot and sends the display dot to the program that manages the object or a corresponding program. The selection information of is output. In particular, the selection information of one or a plurality of display dots is output as the display switching information to the position coordinate generation means described later.

The position coordinate generating program 16 is executed by the central processing unit 2 to realize a position coordinate generating means in the image display system. The position coordinate generation means specifies the position coordinates corresponding to each display dot selected by the selection information by referring to the mapping file 14, and based on the specified position coordinates, the image cutout means, the image reduction means, etc. To generate position coordinates to be output to the display data generating means.

Specifically, for example, an image is displayed on the liquid crystal display 5 or the video RAM 9 with a predetermined aspect ratio, so that the aspect ratio including the two coordinates specified by referring to the mapping file 14 is used. The coordinates of the four sides of the area are generated and output to the image cutting means.
Further, the image reduction means outputs the ratio of the number of recording dots included in the coordinates of the four sides and the number of display dots as the reduction rate of the display data. In the first embodiment, as will be described later, when the liquid crystal display 5 is not in full-screen display, a region is specified with an arbitrary predetermined aspect ratio and output to the image cutout unit. The ratio between the number of recording dots in the area and the number of display dots in the corresponding display area may be output to the image reducing means.

In addition, for example, when only the coordinates of one display dot are input from the output destination selecting means, the coordinates of the four sides which are the display data of the same resolution centered on the input dot are generated and the coordinates are generated. You may make it output to an image cutting-out means.

The map object database 17 stores a plurality of map objects to be displayed on display data in association with individual coordinates.

The map object is, for example, a place name or
It is an object that is displayed on the map as various map symbols, regional boundaries, and the like, and is displayed overlaid on the imaged data of the terrain according to the purpose of use. In addition to this, depending on the purpose of using the topographic image, for example, a structure such as a building, the name of the owner or user of the structure, or the structure,
A symbol or mark of the owner or user of the structure can also be registered as a map object.

It is sufficient that each map object can be generated and superimposed when it is superimposed on the display data.
In, it may be stored as text data or the like.

In addition, each map object may be provided with attribute information for classifying it. For example, the attribute information of each structure such as a railway station, a real estate, a department store, or the related description data of each structure such as the company name and address of a building occupying a building may be added. This makes it possible to search for such information and switch the display based on the information.

Furthermore, as map objects, prefectural boundaries,
Boundary line information such as municipal boundaries, lot number boundaries, route information such as railroads and buses, prefecture name, municipality name, place name information such as lot number, information about landmarks that are local landmarks, etc. are registered with each position coordinate. It may have been done.
A link to related data may be further added to these pieces of information.

The map object search program 18
By being executed by the central processing unit 2, a map object search means is realized in the image display system.
The map object search means uses the display dot selection information and mapping file 14 input from the output destination selection means.
The coordinate corresponding to the display dot is specified by using and, and the corresponding map object is extracted from the map object database 17 based on this coordinate.

Each of the extracted map objects is stored in the video RAM 9 by the map object searching means.
And is collectively stored as the search object file 19. The writing position of each map object on the video RAM 9 may be on the display dot of the coordinates corresponding to each map object or in the vicinity of the right side of the display dot, for example. As a result, the map object can be displayed overlaid on the structure or the like on the imaged data regardless of the display magnification of the display data.

The reproduction database 20 stores reproduction data related to the map object.

Examples of such reproduction data include text data, moving image data, audio data, homepage data, etc. relating to the user or owner of the map object of the user or owner. Specific examples of the reproduction data include image information such as photos of various structures such as stations, buildings, parks, baseball fields and schools, text information, and audio information such as commentary. And
Links to other data may be attached to these pieces of information. In addition, the map object database 17
Stores a link to the reproduction data that is the master for each map object.

The reproduction program 21 realizes reproduction means in the image display system by being executed by the central processing unit 2. The reproducing means first specifies the selected map object by using the selection information of the display dots input from the output destination selecting means and the search object file 19, and further by referring to the mapping file 14 as necessary. . The reproducing means then reads the link corresponding to the specified map object from the map object database 17 or the search object file 19, further reads the reproduction data of this link destination from the reproduction database 20, and executes and reproduces it.

The path length calculation program 22 is executed by the central processing unit 2 to realize a path length calculation means in the image display system. When the selection information of two or more display dots is input to the output destination selection unit, the path length calculation unit counts the number of display dots that form a path between the display dots of each set in the selected order. The count value is multiplied by the distance in the display image corresponding to the distance between the centers of the adjacent display dots to calculate the distance, and the calculation result is written in the video RAM 9.

The distance in the display image corresponding to the distance between the centers of the adjacent display dots can be obtained, for example, by multiplying the distance between the centers of the display dots by the reciprocal of the scale of the display image. The scale of the display image can be obtained, for example, by multiplying the read scale of the display target of the recording dots by the display magnification. further,
The display magnification can be obtained from the mapping file 14 or the like.

The area calculation program 23 is executed by the central processing unit 2 to realize area calculation means in the image display system. When the selection information of two or more display dots is input to the output destination selection unit, the area calculation unit counts the number of display dots enclosed by using the selected display dots as boundaries, and this count is performed. Value and 1
The area in the display image corresponding to one display dot is multiplied to calculate the area, and the calculation result is written in the video RAM 9.

The area in the display image corresponding to one display dot can be obtained, for example, by squaring the distance in the display image corresponding to the length of one side of the display dot. If the display dots are arranged at equal intervals, the distance in the display image corresponding to the length of one side of the display dots can be regarded as equal to the distance between the centers of the adjacent display dots.

The method of specifying the region for calculating the length and area is not limited to this, and other methods such as
The area may be calculated by designating two corners of a standard template prepared in advance.

The path length calculation and the area calculation may be set to be startable only when the reduction ratio is 100% (that is, the reduced image is the same as the recorded image). In this way, if the scale is the same as that of the recorded image, by using the image database 10 created at a resolution of 25 cm, it is possible to accurately measure the distance within a length error of plus or minus 25 cm depending on the reading accuracy of the topographical photograph. Can be calculated.

In some cases, the display dot may not be accurately selected for the outer shape of the building or the like displayed on the screen. In that case, an enlarged display function of allocating each display dot of the display data to a plurality of display dots of the liquid crystal display 5 for display, a reselection function of changing the selected display dot, and the like may be incorporated. Further, as a selection method, the pointing device 7 within a predetermined range is selected.
It is also possible to automatically recognize and select a display dot that is an outline of a structure having a specific feature within the range by moving the cursor. For example, by differentiating the image, it is possible to specify the display dot that is the contour of the structure within the selected range.

Next, the operation of the image display system according to the first embodiment of the present invention will be described.

Keyboard 6 and pointing device 7
The image cutout program 11, the image reduction program 12, the output destination selection program 15, and the like are executed in response to the activation operation of the image display system by the input device such as.

Then, the image cutting-out means reads out the color information of the recording dots of the predetermined image pickup data from the image database 10, and the image reducing means reduces this to the number of dots which can be displayed on the liquid crystal monitor 5, and the video information is reduced. Write to RAM9. The liquid crystal monitor 5 displays the display data written in the video RAM 9.

FIG. 3 shows an example of the startup screen of the image display system. In this start-up screen, a topographic image display area 24 is arranged in the lower left, and various pull-down menus 25 are arranged in the upper area. In the lower right, pointing device 7
The up scroll button 26, the left scroll button 27, the right scroll button 28, the down scroll button 29, the enlargement button 30, the reduction button 31, the coordinate search button 32, the distance calculation button 33 which can be selected by the pointer that moves according to the operation of. An area calculation button 34, a database search button 35, and a database registration button 36 are assigned. In addition, pull-down menu 2 for file operation
Image database 10 for image data read by
It can be specified from among. Image database 10
The image data read from is subject to display control based on the coordinates. Further, in such a screen configuration, the display dots used as the display area of the topographic image become the display dots for displaying the imaging data.

Further, the position coordinate mapping means associates each display dot of this display data with the coordinates in the regional base data, and writes this position coordinate mapping data as the mapping file 14 in the built-in recording medium 1 or the memory 3.

Note that the desired area is not displayed based on the display data as described above, but each address and the coordinates (for example, the coordinates of the government office) are stored in the image database 10 in association with each other. You may make it possible to search the coordinates in.

When the display dot selection information is input from an input device such as a pointing device in a state in which such a series of startup processing has been performed, the output destination selection means selects the object using the display dot. Judgment is made and the selection information of the display dot is output to the program managing the object.

Then, for example, when the display dot in the display area 24 of the topographic image is selected without operating any of the buttons displayed on the right side of the screen, or the scroll buttons 26, 27, 28 in each direction are selected. , 29, the zoom-in button 30, and the zoom-out button 31 are operated, the selection information of the display dot is output to the position coordinate generation means.

When two or more display dots in the display area 24 of the topographic image are selected, the position coordinate generation means refers to the mapping file 14 and each display selected by the display dot selection information. The coordinates corresponding to the dots are specified, the read range including the selected range of the coordinates is specified, and the coordinates of the frame of the read range are output to the image cutout unit. As a result, the image cutting means reads out the color information of the recording dots in the area including the selected range from the image database 10.

Further, the position coordinate generation means calculates a display magnification for displaying the entire read-out range in the display area 24 of the topographic image, and outputs this to the image reduction means. The image output unit reduces the color information for each recording dot read by the image cutout unit by the display magnification, and writes this in the video RAM 9. As a result, the selected area is displayed in the display area 24 of the topographic image.

When the zoom-in button 30 or the zoom-out button 31 is selected, the position coordinate generating means multiplies the display magnification of the currently displayed display data by a predetermined fixed magnification, and the new display magnification Calculate the coordinates of the frame of display data. The image cutting means reads the color information of the recording dots in this coordinate range from the image database 10, and the image reducing means reduces the image according to the new display magnification and writes it in the video RAM 9.

Scroll buttons 26, 27 in each direction,
When 28 and 29 are selected, the position coordinate generation means calculates the coordinates when the display data currently displayed is moved by a predetermined amount. The image cutting means reads the color information of the recording dots in the range of the coordinates from the image database 10, and the image reducing means obtains the image according to the original display magnification and writes it in the video RAM 9.

Through the above processing, a desired area can be displayed in the display area 24 of the topographic image as shown in FIG. 4, for example. This is a printer (not shown)
You can print with. In FIG. 4, the river 37, the building 38, the road 39, etc. are displayed in the actual layout.

In this way, by displaying the number of dots of the image pickup data cut out from the image database 10 as it is or by reducing it as the display data, each display dot of the display data becomes one or a plurality of recording dots. Since the color information based on this is assigned, the image is clearly displayed at the resolution in the display area 24 of the terrain image, unlike the conventional case where the image is enlarged.

In addition, in this way, the display area 2 for the topographic image is displayed.
Each time the display data displayed in 4 is updated, the position coordinate mapping unit updates the mapping file 14 by associating each display dot of the display data with the coordinates in the regional infrastructure data.

When the display dot in the display area 24 of the topographic image is selected after the operation of the coordinate search button 32, the selection information of the display dot is output to the map object search means.

The map object searching means specifies the coordinates corresponding to the display dots by using the display dot selection information and the mapping file 14, and extracts the map object from the map object database 17 based on the coordinates. The extracted map objects are written in the video RAM 9 and displayed on the liquid crystal device 5 as shown in FIG. 5, for example, and are collectively stored as the search object file 19. Figure 5
A building name 40, a building resident name 41, a station name 42, a town name 43, a chome boundary 44, etc. are displayed as a map object.

As a result, the map object can be displayed on the topographic image data in a superimposed manner and can be used in the same manner as a map. Moreover, unlike a normal map where the scale is fixed, a captured image of the terrain is displayed as the background of the map object, so you can efficiently grasp the state of the area that can not be obtained only with the map object. You can

In particular, since the image pickup data can be displayed in an arbitrary size, even if the liquid crystal display 5 has a limited screen size, it can be effectively used to obtain the terrain with the optimum size. The image of can be displayed and the map object can be overlaid in that state.

When the coordinate search button 32 is operated, a text input box is displayed, and an address, a company name, a station name, etc. are entered in this text input box, and only map objects matching these attribute information are displayed. It may be displayed. As a result, even if the registration information in the map object database 17 increases, it is possible to organize and display the necessary types of information.

When a predetermined map object in the topographic image display area 24 is selected, the display dot selection information is output to the reproducing means.

The reproducing means specifies the selected map object by using the selection information of the display dots and the search object file 19 and further by referring to the mapping file 14 as necessary, and specifies the specified map object. The link corresponding to is read from the map object database 17, the reproduction data of this link destination is further read from the reproduction database 20, and the processing of the reproduction data is executed as shown in FIG. Note that the example of the reproduction data shown in FIG. 6 is homepage data, and is displayed by selecting the map object 41 displaying the name of the resident of the building with a pointing device. Further, in this reproduction data, a link to another reproduction data such as a home page is assigned to each character string 45 with a rectangular frame.

Thus, by using the map object as a link, it is possible to provide information that cannot be provided only by the topographic image.

Further, since the names of the structures are displayed as a map object on the topographic photograph and the map object is selected and linked to the information in the reproduction database, it is necessary to display it directly on the map. It is possible to easily provide even floor plan information that cannot be provided, and it is possible to easily construct a very easy-to-use system in which information according to the purpose of use is highly integrated.

When the display dot in the display area 24 of the topographic image is selected after the distance calculation button 33 is operated, the selection information of the display dot is output to the route length calculation means.

When the selection information of two or more display dots is input, the path length calculating means counts the number of display dots between the display dots of each set in the selected order, and the count value The distance is calculated by multiplying the distance in the display image corresponding to the distance between the centers of the adjacent display dots, and the calculated result is written in the video RAM 9. Then, as shown in FIG. 7, the calculation result of the path length of the line segment 46 between the two display dots selected in the display area 24 of the topographic image is displayed in the distance display window 47.

As a result, the length of the path passing through these display dots can be known by simply selecting two or more display dots in the display area 24 of the topographic image. In other words, it is possible to easily measure the distance on the display of the liquid crystal device 5, and even when providing real estate information, for example, it is possible to provide accurate and accurate distance information. Information can be provided. The distance can be reset and the calculation can be performed from the beginning by operating the button displayed as “from the beginning” or the distance calculation button 33 in the distance display window 47 again.

When the display dot in the display area 24 of the topographic image is selected after the area calculation button 34 is operated, the selection information of the display dot is output to the area calculation means.

When the selection information of two or more display dots is input, the area calculation means counts the number of display dots surrounded by the boundary of the selected display dots, and this count value And the area in the display image corresponding to one display dot are multiplied to calculate the area,
The calculation result is written in the video RAM 9. Then, as shown in FIG. 8, a broken-line rectangle 48 specified by two or more display dots selected in the display area 24 of the topographic image.
The area calculation result is displayed in the area display window 49.

As a result, the area of the region specified by these display dots can be known only by selecting two or more display dots in the display area 24 for the topographic image. In other words, the area can be easily measured on the display of the liquid crystal device 5, and even when providing real estate information, for example, it is possible to provide accurate and accurate area information. Information can be provided. In addition, "from the beginning" in the area display window 49
The area can be reset and the calculation can be performed from the beginning by operating the button displayed as or the area calculation button 34 again.

Embodiment 2. FIG. 9 is a list of program files stored in the built-in recording medium 1 and data files used by the program in the computer used in the image display system according to the second embodiment of the present invention. FIG. The other components are the same as those in the first embodiment, and the description thereof will be omitted.

The second image database 50 stores the second image data of the same area as the image data of the image database 10 together with the position coordinates of each recording dot. The second image data is taken on a date different from the aerial photograph of the first image data.

The third image database 51 stores the third image data of a region wider than the image data of the image database 10, such as the entire Kanto Plain, for each recording dot rougher than the recording dots of the image database 10. It is stored together with the position coordinates. Note that the recording dots are rough, for example, if the recording dots in the image database 10 are in units of 25 cm, it means that the recording dots are generated in units of 50 cm or 1 m, which is longer than that.

The database selection program 52 is executed by the central processing unit 2 to realize database selection means in the image display system according to the second embodiment. The database selection means selects an optimum image database as the imaging data of the coordinates based on the coordinates input from the image cutting means, reads the imaging data from the image database, and outputs it to the image cutting means.

Specifically, for example, when the position coordinates of the cutout range are within the range of the image pickup data in the image database 10, the image pickup data is read from the image database 10 and the position coordinates of the cutout range are the image pickup. If it is out of the data range, the third image data is read from the third image database 51.

In addition, when the comparison display is selected and the position coordinates of the range to be cut out are within the range of the imaged data in the image database 10, the imaged data is read from the image database 10 and the second image database is read out. Fifty
The second imaging data is read from. It should be noted that the image database 10 and the second image database 50 may be opened in advance, for example, when performing the comparison setting.

As described above, the plurality of image databases 1
By providing 0, 50, 51 and reading imaging data from them using a common coordinate system, the plurality of image databases 10, 50, 51 are used as if they were one image database. be able to.

Then, for example, the image database 10
As in the relationship between the third image database 51 and the third image database 51, the range of the coordinate of the imaged data of the one image database 10 is included in the range of the coordinate of the imaged data of the other image database 51. The image database 10 in the coordinate range of the third image database 51
It is possible to make it appear as if the imaging data is stored at the resolution of. Therefore, the image database 1 is actually used for the coordinate range of the third image database 51.
When the image pickup data is stored at a resolution of 0, the data amount becomes enormous, but it is possible to improve the actual convenience while preventing the occurrence of such a problem.

Further, based on common coordinates, a plurality of pieces of image pickup data such as image pickup data of the image database 10 and second image pickup data of the second image database 50, which have different image pickup dates in the same coordinate range, are used. By making it readable, it becomes possible to easily grasp the state of regional development, for example.

FIG. 10 is a block diagram showing each means shown in each of the above embodiments and the exchange of information between them. In FIG. 10 and the following description, the reference numerals of the programs corresponding to the respective means are attached for reference.
In the following description, the code of the corresponding program is shown in parentheses “()”.

The image pickup data recorded in the image database 10 is converted into display data by the database selecting means (52), the image cutting means (11) and the image reducing means (12) and written in the video RAM 9. The position coordinate mapping means (13) creates a mapping file 14 by associating coordinates with each display dot of the display data.

The path length calculating means (22) and the area calculating means (23) calculate the path length and area based on the display dot selected by referring to the mapping file 14, and write the calculated path length and area in the video RAM 9.

The map object searching means (18) identifies the coordinates of the selected display dot by referring to the mapping file 14, and based on this, reads the map objects in the predetermined coordinate range from the map object database 17. The read map object is written in the video RAM 9 and recorded as the search object file 19.

The reproducing means (21) identifies the link of the selected map object by referring to the search object file 19, reads the reproduction data of this link destination from the reproduction database 20, and executes it.

Third embodiment. FIG. 11 is a hardware configuration diagram showing an image display system according to the third embodiment of the present invention.

This image display system has a GPS (Gol
A mobile phone terminal 54 having a function of receiving four-dimensional information transmitted from a satellite for bal positioning system) and a browser function of displaying a web page, and a base station 55 performing wireless communication with the mobile phone terminal 54. , A to which this base station 55 or the like is connected
TM (Asyncronus Transfer Mo
de) A communication network 56 and an Internet network 58 connected to the ATM switching network 56 via a protocol conversion server 57.
An intranet 60 connected to the internet 58 through the firewall 59, a web server 61 connected to the intranet 60, an image server 62 connected to the intranet 60, the internet 58 and the ATM switching network 56. The location information server 63 that has been created.

An Internet terminal 64 having a browser function is connected to the Internet network 58, and
Another base station 65 is connected to the M switching network 56. Another mobile phone terminal 66 having a browser function is accommodated in the zone of the other base station 65.

The four-dimensional information is the position information of each satellite in the three-dimensional space and the transmission time of the position information of each satellite. Then, one point on the earth and one point on outer space can be specified based on the four-dimensional information from at least three satellites and the propagation velocity of the radio wave. In addition, at present, it is possible to identify the position on the earth with a position accuracy of about 3 m by receiving the radio waves of four or more satellites and also receiving the ground waves transmitted from the ground. It is becoming possible.

The function of transmitting and receiving the four-dimensional information of the mobile phone terminal 54 receives the four-dimensional information from the plurality of satellites 53 and responds to the GPS transmission request from the position information server 63 received by the mobile phone terminal 54. It is a function to send the latest four-dimensional information. The four-dimensional information acquired by the mobile phone terminal 54 may be updated for each request, or may be automatically updated periodically.

The browser function of the cellular phone terminal 54 is based on the URL (Universa) input by the user's key operation.
1 Retransmit locator) is wirelessly transmitted from the mobile phone terminal 54, and the display data received as a response is displayed on the liquid crystal device of the mobile phone terminal 54 or the like. The received data may be, for example, HTML (Hyper Text Mar).
kup Language) or XML (eXtende)
Page data described in d Markup Language).

The ATM communication network 56 is a network for communicating data in units of a predetermined data size using so-called ATM packets. For example, the base station 55 is A
Through the TM communication network 56, the data received from the mobile phone terminal 54 is transmitted to another base station 65 or the protocol conversion server 57. The other base station 65 transmits the received data to the other mobile phone terminal 66.

The protocol conversion server 57 changes the data format or the like of the data received from the ATM switching network 56 and sends it to the Internet network 58, and changes the data format or the like of the data received from the Internet network 58 to the ATM network 58. It transmits to the switching network 56.

The web server 61 is the firewall 5
9 receives a web page request addressed to itself, which has been filtered and output to the intranet 60, generates home page data corresponding to this request, and transmits it to the intranet 60. This homepage data is output to the internet 58 through the firewall 59. The homepage data may be stored as it is on an information recording medium such as a hard disk, or may be generated as a result of a predetermined data generation process.

In particular, the web server 6 of the third embodiment
In No. 1, when the local image request is received, the position information of the mobile phone terminal 54 is acquired as necessary, a terrain image transmission request is generated based on the position information, and the terrain included in the response to the request is acquired. A process of generating homepage data to which images are allocated and transmitting this homepage to the source of the regional image request is performed. Details of each request will be described later.

The image server 62 is the input / output device 5, 6, of the computer for the image display system of the second embodiment.
7 is replaced with a communication device connected to the intranet 60, and the write destination of the display data of each program is changed from the video RAM 9 to the communication device.

The network I / F program in the image server 62 is executed in the central processing unit 2 in the image server 62 so that the network I / F in the image server 62 is executed.
It realizes the means. The network I / F means determines the output destination means of the display dot selection information and coordinate information input from the intranet 60, and outputs it.

A plurality of image databases are provided in the image server 62. And this Embodiment 3
Then, in each image database, image pickup data of different areas are stored.

The plurality of image databases are
Depending on the amount of each data, they may be stored separately in a plurality of image servers. In this case, various programs for accessing the plurality of image databases may be stored in the web server 61 or one of the image servers. The image server other than the server storing the various programs stores display data in accordance with the position coordinates (latitude / longitude) transmitted from the server storing the various programs. Sent to the server.

Then, the position coordinates (latitude and longitude) are calculated in this way.
Since the image database that cuts out the imaging data from the multiple image databases is selected using, the image database to be used has been changed as a result of, for example, the display area being moved or the display resolution being changed. As a result, the image database can be switched smoothly without stress.

The position information server 63, in response to a latitude / longitude information request received via the Internet network 58 or ATM exchange network 56, generates latitude / longitude information of the portable telephone terminal 54 relating to the request and transmits it. Is. Specifically, for example, when the latitude / longitude information request is received, the position information server 63 transmits a GPS transmission request to the mobile phone terminal 54 relating to the request, receives the four-dimensional information as a response to the request, and receives the mobile phone. The position of the terminal 54 is calculated. Alternatively, the latitude / longitude information of the mobile phone terminal 54 may be generated in advance based on the four-dimensional information, and the latitude / longitude information generated in response to the latitude / longitude information request may be used. However, in the latter case, since it is necessary to periodically obtain the four-dimensional information of a large number of mobile phone terminals 54, the traffic of the ATM switching network 56 is wasted, so that the former method is used. Is preferred.

Next, the overall operation of the image display system according to the third embodiment will be described.

FIG. 12 is a communication sequence chart showing the flow of the entire system when the user of the portable telephone terminal 54 acquires a topographical photograph of his surroundings.

The user of the mobile phone terminal 54 activates the browser function, inputs the URL of the web server 61, and performs an operation of transmitting the URL. In response to this, the mobile phone terminal 54 transmits a web page request, and the web page request is transmitted to the base station 55, the ATM exchange network 56, the data conversion server 57, the internet network 58, the firewall 59, and the intranet 60 based on the URL. It is received by the web server 61 via.

The web server 61 generates home page data relating to this web page request and outputs it to the intranet 60. This homepage data is received by the mobile phone terminal 54 via the firewall 59, the internet 58, the data conversion server 57, the ATM switching network 56, and the base station 55. The mobile phone terminal 54 displays the homepage data on the liquid crystal device based on the browser function.

The user of the mobile phone terminal 54 looks at the home page displayed on the mobile phone terminal 54 and inputs, for example, a request to obtain a topographic image of the surroundings of his / her whereabouts. In response to this, a topographic image request is transmitted from the mobile phone terminal 54 to the web server 61.

When the topographic image request is received, the web server 61 starts the topographic image generation processing and first transmits a latitude / longitude information request to the position information server 63.
Upon receiving the latitude / longitude information request, the position information server 63 starts the latitude / longitude information generation process and transmits a GPS transmission request to the mobile phone terminal 54.

In response to the reception of the GPS transmission request, the portable telephone terminal 54 transmits the latest four-dimensional information of a plurality of satellites received by the four-dimensional information transmitting / receiving function. The position information server 63 receives this and receives the data from the mobile phone terminal 54.
The latitude / longitude information as the location of the is generated, and this is returned to the web server 61. Then, the location information server 63
Ends the latitude / longitude information generation processing.

When the latitude / longitude information as the location of the mobile phone terminal 54 is received, the web server 61 transmits the latitude / longitude information to the image server 62.

In the image server 62, the latitude / longitude information received by the communication device is output to the position coordinate generating means, and the position coordinate generating means converts the inputted latitude / longitude information into coordinates, and the database selecting means, the image switching means. A control signal for generating display data is output to the output means and the image reduction means. Then, when the image reducing means generates the display data based on the imaged data of the image database selected by the database selecting means, the communication device responds the display data to the web server 61.

The web server 61 allocates the terrain display data received from the image server 62 to the home page,
This is transmitted to the mobile phone terminal 54 that has transmitted the regional image request.

The mobile telephone terminal 54 is the intranet 6
0, the Internet network 58, and the ATM switching network 56, when this home page is received, the home page is displayed using its browser function.

As a result, the user of the mobile phone terminal 54 can browse the image data around the user's location only by accessing the web server 61.

In the cut-out processing of the terrain image by the image server 62, the size of the image cut out from the image server 62, that is, the coordinate information of the reduced dots displayed on the four sides of the liquid crystal device of the mobile phone terminal 54 in this case is It may be fixed or arbitrary. In particular, if it is arbitrary, a plurality of size candidates may be displayed on the home page sent in advance, and the user may select one of them, or the user may specify a numerical value as a range. You may make it input directly.

Further, the image databases 10, 50, 51
The map data read from the map object database 17 is superimposed on the image pickup data read from the image server 62, and the image data is transmitted from the image server 62.
4 may be displayed. In addition, the route length calculation means, the area calculation means, etc., such as the distance from a station or a bus stop, may be operated as necessary to provide the calculation information together.

In this example, the read range of the image pickup data is determined based on the position information by GPS, but the read range can be determined based on the address or telephone number as in the other embodiments. good.

When the coordinate information is in a range not included in the topographical photograph because, for example, only one image server 62 is prepared, the web server 61 is used.
Instead of the homepage data including the display data of the topographic image, the homepage data indicating that may be transmitted in response.

If various buttons are prepared on the homepage data, the display range can be enlarged / reduced or moved. When the images are switched in this way, the web server 61 causes the mobile phone terminal 5 to change each time a selection is made.
All of the new topographic image data may be transmitted to 4, or only the difference may be transmitted. However, in the case of differential transmission, although the amount of data to be transmitted can be reduced and traffic can be reduced, the processing capability is low because the mobile phone terminal 54 has to perform a process of combining two images. In the mobile phone terminal 54 or the like, it is better to send all display data every time.

FIG. 13 is a communication sequence chart showing a flow of the entire system when a user of another mobile phone terminal 66 or the Internet terminal 64 acquires a topographical photograph of the surroundings of the mobile phone terminal 54.

In this case, the web page request and the terrain image request are transmitted from the other mobile phone terminal 66 or the internet terminal 64, and the web server 61 responds the home page and the terrain image page to the other mobile phone terminal 66 or the internet terminal 64. Send. The other processing is the same as the operation based on the request from the mobile phone terminal 54 itself.

Although each of the above embodiments is a preferred embodiment of the present invention, various modifications can be made without departing from the scope of the present invention. For example, although the position information server 63 is provided and the position information of the mobile phone terminal 54 is acquired through the position information server 63 in the third embodiment, other devices such as the base stations 55 and 65 and other servers or The position information of the mobile phone terminal 54 may be acquired from the mobile phone terminal 54 itself. Further, the function of the web server 61 and the function of the position information server 63 may be integrated. In this case, the coordinates may be calculated by a mobile terminal other than the mobile phone terminal, for example, a mobile personal computer.

Further, in each of the above-mentioned embodiments, the topographic image data is stored in the built-in recording medium 1, the memory 3 and the image server 62.
The image display system is described as an example in which a part of the image data is cut out and used, but an image that can be suitably used in the image display system of the present invention is the image data of the terrain. It's not limited. Other images include high-precision radiographs for medical use, radiographs for nondestructive inspection, photomicrographs taken with a scanning microscope, photographs of roads, tunnel walls, and other structures, and other high-precision photographs. Examples of the image data scanned are. Further, it can also be used for imaging data by remote sensing, imaging data collected by a data logger, and the like.

By accumulating such highly accurate imaged data in the built-in recording medium 1, the memory 3 and the image server 62 and cutting it out and using it, smooth scrolling and stepless scaling can be performed. This makes it possible to use a clipped image at any position with any resolution.

Further, for each recording dot of this image pickup data,
By assigning unique position information to each imaging data such as coordinates, and linking objects with other media data based on this, linking is performed using one common linking object regardless of the display resolution. Can be displayed, and the image information can be used effectively.

In particular, by associating the coordinates with the respective recording dots of the topographic image data as in the above-mentioned respective embodiments, while providing the same road name, facility name, address information, and boundary information as the road map, Information equivalent to residential maps and topographic maps can also be provided. Therefore, it is possible to provide the above-mentioned information, which could not be obtained without using the maps according to the plurality of purposes in the related art, on one screen and at any resolution desired by the user. , Can provide very high convenience.

Furthermore, by converting the image data of the terrain into data in a two-dimensional rectangular coordinate system such as regional base data, the area of the structure and the area of the structure can be obtained by simply selecting an arbitrary display dot range on the display screen displaying it. It is possible to easily measure the length.

[0204]

As described above, in the present invention, an image can be displayed at any display magnification. Further, in another invention, further, at any display magnification, scaling or moving an arbitrary amount of an image, displaying a place name or a link to other data, linking a plurality of images, calculating a route length or an area. can do.

[Brief description of drawings]

FIG. 1 is a hardware configuration diagram showing an image display system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a list of program files stored in a built-in recording medium in the image display system of FIG. 1 and a data file used by the program.

FIG. 3 shows an example of a startup screen displayed on a display device in the image display system of FIG.

FIG. 4 is a diagram showing a display example of a topographic image displayed on a display device in the image display system of FIG.

5 is a diagram showing a display example of a map object displayed on a display device in the image display system of FIG.

6 is a diagram showing a reproduction example of reproduction data displayed on a display device in the image display system of FIG.

7 is a diagram showing a display example of a path length calculation window displayed on a display device in the image display system of FIG.

8 is a diagram showing a display example of an area calculation window displayed on a display device in the image display system of FIG.

FIG. 9 is a diagram showing a list of program files stored in a built-in recording medium in an image display system according to a second embodiment of the present invention and data files used by the programs.

FIG. 10 is a block diagram showing each means in the image display system according to the second embodiment of the present invention and transmission / reception of data between them.

FIG. 11 is a hardware configuration diagram showing an image display system according to a third embodiment of the present invention.

12 is a communication sequence chart showing a flow of the entire system in the image display system of FIG. 11, and is a chart showing a case of displaying on a mobile phone terminal.

13 is a communication sequence chart showing a flow of the entire system in the image display system of FIG. 11, and is a chart showing a case of displaying on another mobile phone terminal or an internet terminal.

[Explanation of symbols]

1 Built-in Recording Medium 2 Central Processing Unit 3 Memory 4 System Bus 5 LCD Monitor (Display Device) 6 Keyboard (Input Device) 7 Pointing Device (Input Device) 8 Input / Output Port 9 Video RAM 10 Image Database 11 Image Extraction Program 12 Image reduction program 13 Position coordinate mapping program 14 Mapping file 15 Output destination selection program 16 Position coordinate generation program 17 Map object database 18 Map object search program 19 Search object file 20 Playback database 21 Playback program 22 Route length calculation program 23 Area calculation program 24 Topographic image display area 47 Distance display window 49 Area display window 50 Second image database 51 Third image database ( Image database) 52 Database selection program 53 GPS satellite 54 Mobile phone terminal 55 Base station 56 ATM communication network 57 Protocol conversion server 58 Internet network 59 Firewall 60 Intranet 61 Web server 62 Image server 63 Position information server 64 Internet terminal 65 Other Base station 66 Other mobile phone terminals

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G09G 5/00 530 G09G 5/00 530T 5/36 520E F term (reference) 5B050 AA01 BA06 BA10 BA17 BA20 CA07 EA12 EA19 FA02 FA19 GA08 5B082 AA13 GC06 5C082 AA27 BA02 BA12 BA27 BA34 BB15 BB42 CA32 CA52 CA54 CA56 CA76 CB05 DA22 DA42 DA53 DA86 MM05 MM09

Claims (30)

[Claims] 1. An image database that stores image pickup data as aggregate data of display information for each recording dot, and stores position coordinates of an image pickup target of the image pickup data of each recording dot; and the image based on the position coordinates. Display data generating means for reading display information of recording dots in an arbitrary range from the database and generating display data of a predetermined number of display dots with this display information as it is or by reducing the number of dots, and display means for displaying the display data. An image display system comprising: 2. A position coordinate mapping unit that generates position coordinate mapping data in which each display dot of the display data is associated with a position coordinate of the imaging target, and the display data displayed on the display unit is used as a reference. The input means for inputting the display switching information such as enlargement / reduction or movement, and the position coordinates for designating the display data to be generated next based on the position coordinate mapping data and the display switching information are generated, and the position coordinates are generated. The image display system according to claim 1, further comprising: a position coordinate generation unit that outputs the position data to the display data generation unit. 3. A second image data regarding the same object as the image data is stored as a set data of display information for each recording dot, and a position coordinate of the image data of each recording dot in the image object is stored. The image display system according to claim 1, wherein the image data database is provided, and the display data generation unit reads display information from the image database and the second image database using the same position coordinates. 4. Other image pickup data, of which the image pickup target of the image pickup data is a part, is stored as aggregate data of display information for each recording dot, and the position coordinates of the image pickup data of each recording dot in the image pickup target. Is provided with another image database for storing, the display data generating means reads an image from the image database when the position coordinates of the cut-out range are within the range of the imaging data, and the position coordinates of the cut-out range are The image display system according to claim 1, wherein an image is read from the other image database when the image data is out of the range of the imaged data. 5. The image data base is divided into a plurality of recording dots and stored so that the ratio of the length of the recording dots and the length of an imaging target imaged on each recording dot is substantially constant in the image database. Then, position coordinate mapping means for generating position coordinate mapping data in which each display dot of the display data is associated with position coordinates in the imaging target, input means for inputting selection information of the display dot of the display means, A route that passes through two or more display dots selected by the selection information is specified, and the length of the route is calculated using the number of display dots on this route and the scale of the position coordinate mapping data. The image display system according to claim 1, further comprising path length calculation means for outputting this to the display means. 6. The image data base is divided into a plurality of recording dots and stored so that the ratio of the area of the recording dots to the area of the imaging target imaged on each recording dot is substantially constant. Then, position coordinate mapping means for generating position coordinate mapping data in which each display dot of the display data is associated with position coordinates in the imaging target, input means for inputting selection information of the display dot of the display means, An area is specified using two or more display dots selected by the selection information, and the area of the area is calculated using the number of display dots in this area and the scale of the position coordinate mapping data. The image display system according to claim 1, further comprising: an area calculating unit that outputs the area to the display unit. 7. The image database stores, as the imaging data, an aerial photograph corrected based on regional infrastructure data in which the coordinates of each actual point are defined or a plane rectangular coordinate system, and The image display system according to any one of claims 1 to 6, wherein coordinates in the regional infrastructure data are stored as position coordinates of the recording dots. 8. The image database stores, as the imaging data, an aerial photograph corrected on the basis of regional infrastructure data in which the coordinates of each actual point are determined or a plane rectangular coordinate system. A coordinate in the regional infrastructure data is stored as the position coordinate of the recording dot, and a position coordinate mapping unit that generates position coordinate mapping data in which each display dot of the display data is associated with the position coordinate in the imaging target, a structure, At least one selected from the name of the owner or user of the structure, the symbol or mark of the structure, the owner or user of the structure, and the place name or map symbol is stored as a map object. Map that stores the position coordinates of the regional infrastructure data of each map object And object database, a map object search means for extracting the map object in the display data from the map object database by using the position coordinates, the provided further, the display means, a map object that has extracted,
The image display system according to claim 1, wherein the image is displayed by being superimposed on a display dot specified by comparing the coordinates with the position coordinate mapping data or in the vicinity thereof. 9. The input means for inputting selection information of the display dot of the display means is provided, and the map object search means sets a range of position coordinates to be displayed based on the selection information and the position coordinate mapping data. 9. The image display system according to claim 8, wherein the map object is identified and a map object is extracted by searching the map object database using the range of the position coordinates. 10. A reproduction database for storing reproduction data related to the map object is provided, the map object database stores a link to the reproduction data for each map object, and further, the selection information of the map object is stored. Input means for inputting, and a reproducing means for extracting a link of the map object selected by the selection information from the map object database and reproducing predetermined reproduction data on the reproduction database based on the link. The image display system according to claim 8, wherein the image display system is provided. 11. An image database that stores image pickup data as aggregate data of display information for each recording dot in a computer, and stores position coordinates of the image pickup data of each recording dot in an image pickup target, and based on the position coordinates. Display data generating means for reading display information of recording dots in an arbitrary range from the image database, and generating display data of a predetermined number of display dots either by itself or by reducing the number of dots.
And an image display program for displaying the display data on a display means. 12. A position coordinate mapping unit that causes the computer to generate position coordinate mapping data in which each display dot of the display data is associated with a position coordinate of the imaging target, and the display displayed on the display unit. Input means for inputting display switching information such as enlargement / reduction or movement based on data, and position coordinates for designating display data to be generated next based on the position coordinate mapping data and the display switching information. The image display program according to claim 11, further comprising: a position coordinate generating unit that outputs the position coordinate generating unit to the display data generating unit. 13. The computer stores second image pickup data relating to the same object as the image pickup data as aggregate data of display information for each recording dot, and position coordinates of the image pickup data of each recording dot in the image pickup target. A second image database to be stored is realized, and the display data generating unit is operated to read display information from the image database and the second image database using the same position coordinates. The image display program according to claim 11. 14. The computer is caused to store other image pickup data, of which the image pickup target of the image pickup data is a part, as collective data of display information for each recording dot, and image pickup of the image pickup data of each recording dot. Realizing another image database that stores the position coordinates of the target, with respect to the display data generation means, when the position coordinates of the cut-out range is within the range of the imaging data, read the image from the image database, The image display program according to claim 11, wherein when the position coordinates of the cut-out range are out of the range of the image data, the image display program is operated to read an image from the other image database. 15. The image data is divided into a plurality of recording dots and stored in the image database so that the ratio of the length of the recording dots and the length of an imaging target imaged on each recording dot is substantially constant. Then, the position coordinate mapping means for generating position coordinate mapping data in which each display dot of the display data is associated with the position coordinate of the imaging target, and the selection information of the display dot of the display means are input to the computer. The input means and the route passing through the two or more display dots selected by the selection information are specified, and the number of display dots on this route and the scale of the position coordinate mapping data are used to determine the route. The image display program according to claim 11, further comprising: a path length calculation unit that calculates a length and outputs the calculated length to the display unit. 16. The image data is divided into a plurality of recording dots and stored in the image database so that a ratio between an area of the recording dots and an area of an imaging target imaged on each recording dot is substantially constant. Then, the position coordinate mapping means for generating position coordinate mapping data in which each display dot of the display data is associated with the position coordinate of the imaging target, and the selection information of the display dot of the display means are input to the computer. An area is specified using the input means and the two or more display dots selected by the selection information, and the area of the area is determined using the number of display dots in this area and the scale of the position coordinate mapping data. 12. An area calculation means for calculating an area and outputting the calculated area to the display means is realized.
The image display program described. 17. The image database stores, as the imaging data, an aerial photograph corrected based on regional infrastructure data in which the coordinates of each actual point are determined or a plane rectangular coordinate system, and each of the records is stored. The image display program according to claim 15 or 16, wherein the coordinates in the regional infrastructure data are stored as the position coordinates of the dots. 18. The image database stores, as the image pickup data, an aerial photograph corrected based on regional infrastructure data in which the coordinates of each actual point are determined or a plane rectangular coordinate system, and each of the records is stored. Position coordinate mapping means for storing coordinates in the regional infrastructure data as position coordinates of dots, and generating in the computer position coordinate mapping data in which each display dot of the display data is associated with position coordinates in the imaging target, Map at least one selected from structures, names of owners or users of structures, symbols or marks of structures, owners or users of structures, and place names or map symbols In addition to storing as an object, the regional infrastructure data of each map object A map object database that stores position coordinates, and a map object search unit that extracts map objects in the display data from the map object database using the position coordinates, and further, with respect to the display unit, 12. The image display program according to claim 11, wherein the extracted map object is operated so as to be overlapped and displayed on a display dot specified by comparison between the coordinates of the extracted map object and the position coordinate mapping data or the vicinity thereof. . 19. A range of position coordinates to be displayed to the map object search means is specified based on the selection information of the display dots of the display means input to the input means and the position coordinate mapping data, and the position coordinates are specified. 20. The image display program according to claim 18, wherein the image display program is operated to search the map object database by using the range of 1. 20. The computer realizes a reproduction database that stores reproduction data related to the map object, the map object database stores a link to the reproduction data for each map object, and the computer further comprises: And input means for inputting the selection information of the map object, and a link of the map object selected by the selection information is extracted from the map object database, and based on this link, a predetermined reproduction on the reproduction database is performed. 19. The image display program according to claim 18, further comprising a reproducing means for reproducing data. 21. The image pickup data is stored as a set data of display information for each recording dot, and an arbitrary position is calculated based on the position coordinate from an image database storing the position coordinate of the image pickup data of each recording dot in the image pickup target. An image display method characterized in that the display information of recorded dots in a range is read, the display information is left as it is or the number of dots is reduced to generate display data of a predetermined number of display dots, and the display data is displayed. 22. Position coordinate mapping data in which each display dot of the display data is associated with a position coordinate in the image pickup target, and scaling or movement based on the display data input to the input means is performed. Based on the display switching information and the position coordinate mapping data, position coordinates for designating the display data to be generated next are generated, and the display information of the recording dots in an arbitrary range is read from the image database using the position coordinates. 22. The image display method according to claim 21, wherein: 23. Second image data relating to the same object as the image data is stored as set data of display information for each recording dot, and position coordinates of the image data of each recording dot in the image object are stored. From the image database of, read the display information of the recording dots of a predetermined range based on the position coordinates, based on the display information based on the display information read from the image database, based on the display information read from the second image database 22. The image display method according to claim 21, wherein display data is displayed. 24. An image database that stores image pickup data as aggregate data of display information for each recording dot, and stores position coordinates of the image pickup data of each recording dot in the image pickup target, or an image pickup target of the image pickup data. Other image data to be a part of the image data is stored as a set data of display information for each recording dot, and one of the other image databases storing the position coordinates of the image data of each recording dot in the image capturing target is stored. Select based on the position coordinates, read the display information of the recording dots in an arbitrary range based on the position coordinates from the selected image database, and display the display information as it is or reduce the number of dots to obtain a predetermined number of display dots. An image display method comprising generating display data and displaying the display data. 25. Image pickup data is stored as aggregate data of display information for each recording dot, and the ratio of the length of the recording dot and the length of the image pickup target imaged on each recording dot is substantially constant. The display information of the recording dots in an arbitrary range is read out based on the position coordinates from the image database that stores the position coordinates of the image data of each recording dot in the imaging target, and The display data of a predetermined number of display dots is generated by reducing the number of dots, the display data is displayed on the display means, and the position coordinate mapping data in which each display dot of the display data is associated with the position coordinate of the imaging target is displayed. Generating, specifying a route based on the selection information of the display dots of the display means, and further, displaying the number of display dots on the route and the above position. The image display method characterized by calculate the length of the pathway by using the scale of the coordinate mapping data, and displays the calculation result on the display means. 26. Image pickup data is stored as set data of display information for each recording dot, and a ratio of an area of the recording dot and an area of an image pickup target imaged on each recording dot is substantially constant. In addition to reading the display information of the recording dots in an arbitrary range based on the position coordinates from the image database that stores the position coordinates of the recording data of each recording dot in the imaging target, The display data of a predetermined number of display dots is generated by reducing the number, the display data is displayed on the display means, and the position coordinate mapping data in which each display dot of the display data is associated with the position coordinate of the imaging target is generated. The area is specified based on the display dot selection information of the display means, and the number of display dots in the area and the position The image display method characterized by the area calculated using the scale in the coordinate mapping data, and displays the calculation result on the display means. 27. In the image database, an aerial photograph corrected based on regional infrastructure data in which the coordinates of each actual point are determined or a plane rectangular coordinate system is stored as the imaging data, and 27. The image display method according to claim 25, wherein the coordinates in the regional base data are stored as the position coordinates of the recording dots. 28. The image data of the aerial photograph corrected on the basis of the regional infrastructure data in which the coordinates of each actual point are defined or the plane rectangular coordinate system are stored as a set data of display information for each recording dot, and From the image database that stores the coordinates of each recording dot in the regional infrastructure data, the display information of the recording dots in an arbitrary range is read based on the position coordinates, and the display information is left as it is or the number of dots is reduced to a predetermined display dot. Number of display data is generated, the display data is displayed on the display means, and the position coordinate mapping data in which each display dot of the display data is associated with the position coordinate in the imaging target is generated. Name of owner or user, structure, symbol or mark of owner or user of structure , And at least one type selected from a place name or a map symbol is stored as a map object, and a map in the display data is stored from a map object database that stores the position coordinates of the regional base data of each map object. An image display method comprising: extracting an object, and displaying the extracted map object in an overlapping manner on a display dot specified by a comparison between its coordinates and the position coordinate mapping data or in the vicinity thereof. 29. The extraction process of the map object comprises:
The range of position coordinates to be displayed is specified based on the display dot selection information input to the input means and the position coordinate mapping data, and the map object database is searched by using the range of position coordinates to display the map object. 29. The image display method according to claim 28, wherein the image is extracted. 30. In the map object database, a link to the reproduction data is stored for each map object, the link is extracted based on the selection information of the map object input to the input means, 29. The image display method according to claim 28, wherein predetermined reproduction data is reproduced based on a reproduction database that stores reproduction data related to the map object.