JP3378395B2 - Terrain information display method and terrain information management device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terrain information management system, and more particularly to a method for displaying terrain information that changes with time.

[0002]

2. Description of the Related Art In a conventional topographical information management system, the items of the topographical information of the same area and the degree of detail are managed while changing according to the scale. For example,
The vector display data such as roads and rivers in the map information is roughened as the degree of scale increases, and small roads and rivers are excluded from the display data according to a certain standard. Such map information having different degrees of detail is not only used for giving an "easy-to-see" display, but also for example, in Japanese Patent Laid-Open No.
As described in No. 54590, speeding up route selection processing to a destination in car navigation.

The topographical information is widely used not only as map information but also as background or position information for observation information such as weather. In this case, JP-A-62-39987
As shown in No. 2, the transmitting side transmits the latitude and longitude and the observation data, and the receiving side extracts the geographical information surrounded by the latitude and longitude from the storage device and synthesizes it to shorten the transmission time.

[0004]

Conventional terrain information such as map information is regularly upgraded and managed according to the date of update. In this case, the position of each topographical element in the topographical information is fixed for natural elements such as rivers, lakes, coastlines, etc., and those that have changed due to artificial elements such as roads are updated.

However, the positions of natural elements are not always fixed, and may change greatly depending on the season, season or specific natural conditions. For example, the width of a river with water and the position of a lake shore advance in the rainy season such as the rainy season and recede in the dry season. The coastline also changes greatly locally due to low and high tides and the flow rate of rivers. The position information of these seemingly fixed natural elements is an important factor in, for example, a CAD system for civil engineering design and a rescue simulation in the event of a disaster.

Conventionally, such natural topographical information has been fixedly handled and cannot be viewed as topographical information that changes according to natural conditions such as time, season or natural disaster. In addition, construction designed based on fixed terrain information and disaster countermeasures by simulation have the risk of causing serious accidents and failures, and there is a problem that human life cannot be neglected.

An object of the present invention is to provide a method for registering terrain information that changes according to a specific natural condition, a method for displaying terrain information under desired conditions, and a terrain information management device having those functions. To do.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to register basic terrain data consisting of normal terrain information in a terrain information registration method for storing a topographic map of a predetermined area as vector data for each component. This is achieved by registering additional graphic data of temporary topographical information under specific natural conditions in association with predetermined constituent elements.

An object of the present invention is to provide a method for displaying topographical information in which a topographic map of a predetermined area is composed of a plurality of constituent elements, and the predetermined constituent elements have a plurality of patterns of vector data. When a predetermined keyword for changing the display of the component is received while displaying the basic terrain data consisting of terrain information, the additional graphic data consisting of temporary terrain information corresponding to the keyword is searched and the basic terrain being displayed is displayed. This is achieved by replacing the corresponding figure of the topographical data with the additional figure data.

The object of the present invention is to store a storage device for storing graphic data and its management data, a display device for displaying the graphic data, an input device for giving a user's instruction, control of these devices, and a topographic map. In a topographical information management device having a central processing unit having a data registration processing function and a display processing function, the registration processing function comprises topographical map vector data of a predetermined area for each of a plurality of constituent elements in normal time. The display processing function has a function of registering a plurality of patterns including basic terrain data and additional graphic data composed of temporary terrain information based on natural conditions. This is achieved by having a function of searching for and substituting another pattern for a component.

[0011]

According to the present invention, topographical information that temporarily changes according to specific natural conditions is managed as additional information. Therefore, the peculiar natural information that was conventionally treated as fixed is
Since the natural condition can be specified by referring to it with a keyword or the like, it can be used for designing civil engineering works, simulating disaster relief, and the like, and can improve its accuracy.

According to the present invention, the basic terrain data and additional graphic data of the terrain map are managed in units of constituent elements or graphic names, so that the amount of additional data can be reduced and an increase in the capacity of the storage device can be suppressed. The processing speed at the time of changing the display to the additional graphic data can be improved.

According to the present invention, the basic topographical data of the topographic map, the additional graphic data, and the history graphic data are managed by a common graphic name, so that mutual display changes and history management of the additional graphic data are easy. You can

[0014]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram of a terrain information management apparatus of one embodiment. The topographic information management device is a central processing unit (CP
U) 1, a main memory 2, an external storage device 3 having a basic terrain data area 31, an additional graphic data area 32, a history graphic data area 33 and a management data area 34, and a user input device 4 such as a keyboard or a mouse, The terrain screen display device 5 and the system bus 6 connecting them are included.

The central processing unit (CPU) 1 has, in addition to a normal input / output processing function, a topographical information registration processing unit 10 and a display processing unit 13, and stores its processing program in the main memory 2. . The registration processing unit 10 includes a basic terrain data registration unit 11 and an additional graphic data registration unit 12 (including history graphic data registration in this example), and the display processing unit 13 includes a normal basic terrain display unit 14 and a graphic. It has a change display section 15. The screen of the display device 5 has a terrain display screen area 51 and an operation button display area 52.

FIG. 2 shows a flow of registration processing of additional data including updating of basic topographical data.

This process is activated by pressing the registration button 521 and selecting a registration command. When the drawing number and the component number (ID) from the input device 4 are acquired (s10
1) The related data is read from the external storage device 3, stored in the basic terrain data area 21 and the graphic management data area 24 of the main memory 2 (s102), and the registration data setting screen is displayed on the screen 51 (s103).

FIG. 3 shows an example of the registration data setting screen. On the screen 51, a basic topographic image 511 and a setting data field 512 corresponding to the designated drawing number and component number (for example, ID of river X: R001) are displayed. When the user designates a change point on the basic topographic image 511 with a mouse, the value is displayed in the setting data field 512 and is accepted as input data for each figure name (S-1-1, S-1-2). (S104). As the registration date, the collection date of the input data or the data creation date is set. The pre-updated data corresponding to this input data is temporarily stored for each figure name (s
105).

Next, an inquiry is made as to whether or not the basic topographical data is updated (s106). When updating is performed, the constituent point data of the corresponding graphic name in the basic topographical data area 21 is updated with the input data (s107). At this time, the registration date of the basic terrain data is also updated, and the end date is not set.

Further, the pre-update data of the corresponding graphic name is registered in the graphic history data storage area 23 as the graphic history information, with the registration date before the update to the registration date after the update as the expiration date (s108). This history data is useful not only for topography such as roads and railroads that are frequently built or changed, but also for history management of rivers due to revetment work. If the historical data is not needed, this process is omitted.

On the other hand, in step s106, if the update is not permitted, the input data is registered in the additional graphic data area 22 as additional graphic data (s109). When managing the deadline of additional figures, set the start date of the effective period as the collection date of the input data or the past start date when the data can be used effectively.
The end date is not set until this data is updated. This additional figure data shows natural topography such as rivers and coasts.
This data is for seasonal changes such as the dry season and the rainy season, or temporary changes due to disasters.

As will be described later, it is also possible to change the display of the basic terrain data being displayed with arbitrary additional graphic data and update the additional graphic data with the state as "basic terrain data". At that time, the additional graphic data before updating may be managed as history graphic data. The selection in step s106 may be made according to the type of input data (history graphic / additional graphic).

FIG. 4 shows the structure of the management data of the topographical data registered as described above. The management data is roughly divided into the drawing management information section 241 and the graphic data section 242.
It is divided into In the drawing management information section 241, one topographic map
"Drawing number" that is set when dividing in figure leaf units,
The drawing-specific information such as "drawing name" and "drawing coordinate value" is stored.

The graphic data section 242 classifies the information on the topographic map for each object and manages it in units of layers. Each layer has a layer number. For example, in “Layer 1: River layer”, under the number of components n indicating the number of rivers, the basic figure data of each component number (R001: ID of river ◯◯ 00) The "head address", "graphic type", "graphic number", etc., "additional graphic information number" and "additional information", and "history graphic information number" and "history information" are managed.

The "additional information" has "additional information name (reference number)" and "additional address" as many as the number of additional graphic information. Similarly, the "history information" has "history information name (reference number)", "history address", and "expiration date" for the number of pieces of history information. The “additional information” may include the “expiration date”.

FIG. 5 shows the structure of topographic map data. The topographic map data is composed of "basic topographic map data" which is a basic map, and "additional graphic data" and "history graphic data" which are variable information.

The "basic topographic map data" is stored for each constituent element in each layer, and its head is indicated by the "basic graphic address" of the graphic data section 242. The “figure name” is uniquely shown in the topographic map data and serves as a key for associating the constituent elements of the basic topographic map data with the additional graphic data or the historical graphic data. The “constituent points” and the “constituent coordinates” are actual data forming a figure. The "additional graphic data" and the "history graphic data" are converted into data corresponding to graphic names.

According to this embodiment, the entire basic terrain data is always managed with the latest data, and the changing portion of the terrain data that changes temporally or on a specific day is managed as additional data, so that a small amount of data can be obtained. Can secure necessary data.

FIG. 6 shows a change display flow by the additional figure and the history figure in the topographic map display processing.

First, when the drawing number is acquired (s20
1), read the management data corresponding to the drawing number, obtain the address of the basic figure data in layer units or figure type units,
The basic terrain data is read and displayed (s202, 2
03). Next, inquire whether display change is necessary (s20
4) If not changed, the process ends.

When changing and displaying, the component ID of each layer
(Here, R001 indicating ◯◯ river) and the search key are received (s205, s206), and the type of the search key is determined (s207). Search keys are classified into "event name" and "time".

The "event name" is specified by, for example, [name: word], and a word representing a natural phenomenon such as "rainy season", "dry season", "flood" is used. In this word, for example, [name: dry season + specific day] is possible, and in this case, a specific day of the dry season is designated.

On the other hand, "time" is "date: year",
"Date: ○ year ○ year △ month", "date: ○ year △ month ×
Specify the date when the expiration date of the history data you want to change and display will start. If the "time" is specified as a year or a month, and there is a double in the valid period of multiple historical data, as a general rule, new (or old) data is adopted.

When the search key is "event name", table 1
The (event name / graphic name comparison table) 243 is referred to, and the graphic name of the corresponding additional data is searched (s208). FIG. 7 shows the structure of the event name / graphic name comparison table. This table is provided for each drawing number, each layer, or each component ID. The illustrated example is an example of a figure number unit including a river layer (s-1) and a coastal layer (s-2).

Next, the corresponding additional graphic data is searched according to the searched graphic name (s209), the corresponding data is read (s212), and the data of the corresponding graphic name of the basic topographical data being displayed is changed to the additional data. To display (s21
3).

On the other hand, when the search key is "time", the relevant history data name is searched by referring to the table 2 (graphic name / history information management table) 244 provided for each drawing number or component number (see FIG. s210). As shown in FIG. 8, this table manages history graphic data names and their expiration dates for each graphic name. As a result, it becomes possible to search for the history data name whose designated "date: date" is included in the expiration date. After that, the corresponding history graphic information is searched and changed and displayed.

Although the graphic names are searched from the "event name" and "time" of the search key in the tables shown in FIGS. 7 and 8, the graphic element names may be replaced with the constituent element IDs.

According to this, since the additional data and the change data are managed in correspondence with the figure name of the basic topographical data and can be searched in association with the figure name, the corresponding data in the change display can be minimized to perform the display changing process. Can speed up.

[0040]

According to the present invention, the geographical information that temporarily changes according to the unique natural conditions is managed as the additional information, so that the unique natural information which has been fixedly handled in the past can be referred to. . As a result, the accuracy can be improved by using it for designing civil engineering works, simulating at the time of a disaster, and planning rescue measures.

According to the present invention, since the basic topographical data and additional graphic data of the topographic map are managed in units of constituent elements or graphic names, it is possible to reduce the amount of additional data and suppress an increase in the capacity of the storage device. The processing speed at the time of changing the display to the additional graphic data can be improved.

[Brief description of drawings]

FIG. 1 is a functional block diagram of a terrain information management device according to an embodiment of the present invention.

FIG. 2 is a flow chart of registration processing of additional graphic data / history graphic data.

FIG. 3 is a display diagram of an additional graphic data registration setting screen.

FIG. 4 is a structural diagram of topographic data management data.

FIG. 5 is a structural diagram of basic terrain data, additional graphic data, and history graphic data.

FIG. 6 is a flow chart of a display change processing of the topographic map.

FIG. 7 is a configuration diagram of an event name / graphic name comparison table.

FIG. 8 is a configuration diagram of a graphic name / history information management table.

[Explanation of symbols]

1 ... Central processing unit (CPU), 2 ... Main memory, 3 ... Auxiliary storage device, 4 ... Input device, 5 ... Display device, 10 ... Registration processing unit, 11 ... Basic terrain data registration unit, 12 ... Additional figure data registration Section, 13 ... display processing section, 14 ... topographic map display section,
15 ... Display change section, 21 ... Basic terrain data area, 22 ...
Additional figure data area, 23 ... History figure data area, 24
... management data area, 241 ... management information section, 242 ... graphic data section, 243 ... event name / graphic name comparison table, 24
4 ... Graphic name / history information management table.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junichi Nakahata 5-2-1 Omika-cho, Hitachi-shi, Ibaraki Inside the Omika Plant, Hitachi, Ltd. (56) Reference JP-A-64-12372 (JP, A) Kai 62-264373 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G06F 17/30 G06T 1/00 G09B 29/00 JISC file (JOIS)

Claims (6)

(57) [Claims] 1. A method of displaying topographical information in which a topographical map of a predetermined area is composed of a plurality of constituent elements, and the predetermined constituent element has a plurality of patterns of vector data, wherein the predetermined constituent element is composed of normal topographical information. When a predetermined keyword for changing the display of the relevant component is received while displaying the basic terrain data, the additional graphic data consisting of temporary terrain information corresponding to the keyword is searched for and the corresponding basic terrain data is displayed. A method of displaying topographical information, characterized in that a figure is replaced by the additional figure data. 2. The keyword according to claim 1 , wherein the keywords are rainy season, dry season, and
A method of displaying topographical information, characterized in that it is an event name such as flood, and the keyword also includes a specific date such as a disaster occurrence date. 3. A method of displaying topographical information in which a topographic map of a predetermined area is composed of a plurality of constituent elements, and the predetermined constituent element is composed of a plurality of patterns of vector data, and the predetermined constituent element is composed of normal topographical information. When a predetermined keyword for changing the display of the component is received while displaying the basic terrain data, additional graphic data or history graphic data of the corresponding temporary terrain information is searched according to the type and content of the keyword. The method for displaying topographical information is characterized by displaying the basic topographical data in place of the corresponding figure being displayed. 4. The word according to claim 3 , wherein the keyword has a type of a code for designating an event name and a code for designating a desired time, and a word or a disaster indicating a natural phenomenon is provided under the code of the event name. Designate a specific date such as the occurrence date to enable searching for the corresponding additional graphic data,
A method for displaying topographical information, characterized in that a year, year, month or the like is designated under the code of the desired period, and history graphic data including the designated period within the valid period can be searched. 5. A storage device for storing graphic data and management data thereof, a display device for displaying graphic data, an input device for giving a user's instruction, control of each of these devices, and registration processing of topographic map data. In a topographical information management device having a central processing unit having a function and a display processing function, the registration processing function is to add topographical map vector data of a predetermined area to a plurality of constituent elements and basic topographical data consisting of normal topographical information. The display processing function has a function of registering a plurality of patterns including additional graphic data of temporary topographical information according to natural conditions, and the display processing function displays another predetermined element while the basic topographical data is displayed. It has a function of alternative search patterns, and the registration processing function manages a common entity name in said basic topography data and the additional graphic data, before The display processing function has a function of setting a search table that compares the graphic name of the additional graphic data with a keyword indicating a specific natural phenomenon, and the display processing function includes the graphic name of the additional graphic data corresponding to the specified keyword in the search table. A topographical information management device, which is read from the computer and searches for additional graphic data having the graphic name. 6. The history topographical data according to claim 5 , wherein the registration processing function updates the basic topographical data to the latest data for each figure name and registers the data, and adds the valid period to the corresponding data before updating. The display processing function has a function of reading out historical terrain data having an expiration date corresponding to a specified time and substituting for the basic terrain data being displayed. A terrain information management device characterized in that