JP5383417B2 - Map information processing apparatus, map information processing method, and map information processing program - Google Patents

Description

  The present invention relates to a technique for processing map information, and more particularly to a technique for processing an annotation display displayed on a map.

  A technique for displaying a map according to a specified scale is known. For example, in Patent Document 1 (Japanese Patent Laid-Open No. 8-55214), each display control information specified by a scale item and a map information type item is set in the scale management table 6, and the scale management table 6 A map display control method for extracting and displaying corresponding map information from the map information stored in the map information file 5 based on the display control information is described. The display control information in the scale management table 6 is “1” when the map information of a certain map information type (information indicating roads such as national roads and map symbols) is to be displayed on a map of a certain scale. If it should be excluded from the display target, “0” is given by the operator.

JP-A-8-55214

  By the way, in order to improve the convenience of the map, the map includes a note display indicating the name of the building or the like. It is desirable to display an appropriate amount of annotation display according to the scale of the map, because the annotation display reduces the readability of the user if the amount displayed is too large or too small. It is desirable to display the content with the highest priority for the content.

  As described above, since it is required to display an appropriate amount and quality of an annotation display according to the scale of the map, conventionally, the map display is similar to the map information described in Patent Document 1 above. The editor has individually selected the note display to be displayed from a huge amount according to the scale. However, similar to the map display control method described in Patent Document 1, the selection of the annotation display is performed by the subject matter of the map editor, so that the objectivity is easily lost, and the map editor has a great effort. And there was a problem that it took time.

  The present invention has been made in view of such circumstances, and provides a map information processing apparatus capable of selecting an appropriate amount and quality of note display according to a display scale based on objective criteria. Objective.

  A map information processing apparatus according to the present invention includes map data storage means for storing map data relating to a plurality of maps of different scales divided into a plurality of regions, and note display information relating to a note display displayed on the map, , Note data storage means for storing note data associating position information of the object of the note display and attribute information of the object of the note display, and the note set for each region of the map Area-specific weight storage means for storing weight information in which attribute information that can be taken by the display object can be associated with weights assigned to the attribute information, and the area to which the object belongs is stored in the note data storage means Weight specifying means for specifying the weight information set for the area to which the specified object belongs, from the weight storage means for each area, By reading the attribute information of the indicated object from the annotation data storage means and performing weighting on the read attribute information based on the weight information specified by the weight specifying means, the score of the annotation display is obtained. A calculation means for calculating, a score annotation data storage means for storing the score and the annotation display in association with each other, and selecting a score belonging to a certain score range according to a specified scale among the scores; Annotation display extraction means for extracting an annotation display corresponding to the selected score from the score annotation data storage means, and a map data extraction means for extracting map data of a map corresponding to the designated scale from the map data storage means And a map display control for controlling the extracted annotation display to be displayed in a state of being superimposed on a map based on the extracted map data. Provided with the means.

  Further, the fixed score range corresponding to the scale may be set so as to change according to the change of the scale.

  The annotation display extracting means is based on a standard score set for each scale, and the scores belonging to a certain score range corresponding to the specified scale among the scores stored in the score annotation data storage means May be selected.

  Further, when the score note data stored in the score note data storage means is stored by rearranging the scores included in the score note data as keys, the note display extraction means is set for each scale. A score belonging to a certain score range corresponding to a specified scale may be selected from the scores stored in the score note data storage means based on the reference ranking.

  The calculating means may multiply the read attribute information by a weight specified by the weight specifying means corresponding to the attribute information, and calculate a sum of multiplication results as a score of the annotation display.

  Moreover, this invention is the map information processing method in a map information processing apparatus. The map information processing apparatus includes: map data storage means for storing map data relating to a plurality of maps having different scales divided into a plurality of regions; note display information relating to a note display displayed on the map; Note data storage means for storing note data in which position information of the display target object and attribute information of the target object of the note display are associated with each other, and the target of the note display set for each region of the map A weight storage unit for each region that stores weight information in which attribute information that can be taken by the object and weights assigned to the attribute information are associated with each other. The map information processing method specifies an area to which the object belongs based on the position information stored in the annotation data storage unit, and sets weight information set for the area to which the specified object belongs to the area. A step of specifying from another weight storage means, and reading the attribute information of the object of the note display from the note data storage means, and weighting the read attribute information based on the weight information specified by the weight specification means Performing the step of calculating and scoring the score of the note display, storing the score and the note display in association with each other in the score note data storage means, and at a specified scale of the scores. A score belonging to a certain score range is selected, and a note display having the selected score is extracted from the score note data storage means. A step of extracting map data of the map corresponding to the specified scale from the map data storage means, and a state in which the extracted annotation display is superimposed on the map based on the extracted map data And controlling to display.

  The present invention is also realized as a program for causing a computer to execute the above-described method.

  Furthermore, the present invention is also realized as a computer-readable recording medium that records the above-described program.

  The program of the present invention can be installed or loaded on a computer through various recording media such as an optical disk such as a CD-ROM, a magnetic disk, or a semiconductor memory, or via a communication network.

  Further, in this specification and the like, “means” does not simply mean a physical means, but also includes a case where a function of the means is realized by software. Further, the function of one means may be realized by two or more physical means, or the functions of two or more means may be realized by one physical means.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the map information processing apparatus which can select the note display of appropriate quantity and quality according to display scale based on objective criteria.

1 is a block diagram showing a schematic configuration of a map information processing apparatus 1. FIG. It is a figure which shows an example of the data structure of annotation data DB32. It is a figure which shows an example of the data structure of regional division information DB33. It is a figure which shows an example of the data structure of weight DB34 classified by area. It is a figure which shows an example of the data structure of score DB35. It is a flowchart which shows an example of the flow of score DB creation processing. It is a flowchart which shows an example of the production | generation of the map data for a display, and the flow of a display process. It is a flowchart which shows an example of the map displayed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted.

  Here, the map information processing apparatus according to the present embodiment targets map information, and this map information is configured to include a map and a note display.

  The map is a diagram showing the state of the terrain, and there is no limitation on the content thereof. For example, the map shows the level of the land with contour lines or the like, or the river, lake, road, building, or the like. In addition, the map applied to this invention is not restricted to what represented the topography correctly, and the simplified map is also included. The map is also called, for example, a plan view or a background view.

  On the other hand, the note display expresses information related to the object on the map (note object) by letters, numbers, etc., and the contents thereof are not limited. For example, names of administrative divisions, roads, railways, buildings, etc. Is represented by letters and altitude is represented by numbers. Moreover, the case where the name of a target object is represented by a specific icon, a mark, etc. is also included. In this embodiment, the case where the note display is a “station name” representing the name of a railway station will be described. However, the note display to which the present invention is applied represents an object on a map. For example, “city name”, “interchange name”, “department name”, etc. are also applicable.

  Here, an object of the present invention is to select an appropriate annotation display corresponding to the display scale based on an objective criterion, not on an individual selection by a map editor or the like. Therefore, in the present invention, paying attention to the “attribute information” of the note object specified by each note display, the “score” of the note display should be calculated and displayed using the calculated “score”. Determine the note display. For example, when the note display is “station name”, by assigning a score to the “station name” according to the type and number of trains (attribute information) entering the station specified by the “station name”, Quantify the importance of each “station name”. For example, the “station name” of a station having a large number of types of trains and the number of trains that are entered can be regarded as having a higher importance than the “station name” of a station having a small number of types of trains and the number of trains that are entered. When the map display scale is small, the display amount of the note display is also small, so only the station name with the higher score is selected. On the other hand, when the display scale is large, the display amount of the note display is large, so the score is a little. By selecting a station name having a low station name, it is possible to preferentially select a station name having a high importance according to the display amount of the note display. As described above, since the station name is selected based on the score calculated based on the attribute information, it is possible to select the optimal quantity and quality of the station name based on the objective standard.

  Here, when the score is calculated based on the attribute information of the note object, there may be a regional difference between the calculated scores. For example, when comparing the station name of a station belonging to a metropolitan area and the station name of a station belonging to a rural area, generally, there are more types of trains and the number of trains that belong to a metropolitan area. Station names tend to get high scores, and station names belonging to regions tend to get low scores. As a result, for example, if the extraction criteria for the note display that should be displayed according to a certain scale is set to a high score according to the metropolitan area, there may be cases where no station name to be displayed is extracted in the region, while it matches the region. If the score is set to a low score, there may be a case where there are too many station names to be displayed in the metropolitan area, which cannot be displayed or superimposed.

  Therefore, in the present invention, by assigning weights to the attribute information of the annotation object for each region, there is no region difference between the scores.

(Schematic configuration of map information processing device)
FIG. 1 is a block diagram showing a schematic configuration of a map information processing apparatus 1 according to an embodiment of the present invention. As shown in FIG. 1, the map information processing apparatus 1 includes functional units such as a communication unit 10, a control unit 20, a storage unit 30, an input unit 40, and a display unit 50. The map information processing apparatus 1 is a dedicated or general-purpose computer including hardware such as a CPU (central processing unit) composed of a microprocessor, a memory (ROM, RAM) coupled to the CPU, an HDD, and various interfaces, for example. Can be used. Each of the above functional means is realized mainly by the CPU executing a program stored in a memory, HDD or the like to control each hardware. The map information processing apparatus 1 may be configured by a single computer or may be configured by a plurality of computers distributed on a network, for example.

  The communication means 10 is an interface for communicating with an information processing apparatus (not shown) connected via a network, for example.

  The control means 20 has a function of controlling the overall operation of the map information processing apparatus 1 and also includes score annotation data creation means 21 and map creation display means 22 for executing the map information processing according to the present invention.

  The score note data creation means 21 calculates the score of the note display by summing the weighted results of the attribute information of the note object, and creates scored note data (score note data) Is provided. Specifically, the score note data creation means 21 includes an area division setting means 211, a weight setting means 212, a score giving means 213, a score note data storage means 214, and the like.

  The area division setting unit 211 has a function of setting area division information for dividing the target map into a plurality of areas. The area classification information includes identification information (for example, area ID and area name) for specifying the area, and coordinates (for example, east end, west end, north end, south end, etc.) that define the area of the area. For example, when the area classification setting unit 211 receives the area classification information input by the map creator, the area classification setting unit 211 stores the received area classification information in the area classification information DB 33 (see FIG. 3). Moreover, you may determine area division information automatically according to a fixed reference | standard. In addition, the area division setting unit 211 can appropriately execute addition, deletion, and change of the area division information to the area division information DB 33. The region classification information DB 33 will be described later.

  The weight setting unit 212 has a function of setting weight information for each region set by the region division setting unit 211. The weight information includes, for example, identification information for specifying a region, attribute information that can be taken by the annotation object, and a weight (weight coefficient) given to the attribute information. For example, when receiving weight information input from the map creator, the weight setting unit 212 stores the received weight information in the regional weight DB 34 (see FIG. 4). When the annotation object has a plurality of attribute information, a weighting factor may be set for all or some of the attribute information, or one weighting factor may be set collectively. . Further, the weighting factor may be automatically determined according to a certain standard. Note that the weight setting unit 212 can appropriately execute addition, deletion, and change of weight information to the regional weight DB 34. The regional weight DB 34 will be described later.

  The score assigning means 213 reads the note data including the position information from the note data DB 32, and refers to the region division information stored in the region division information DB 33 based on the read position information, thereby displaying the note (and (Or note target object) to specify the region to which the specified note display (and / or note target object) belongs to the attribute information weight corresponding to the region that belongs to the region weight DB 34 (region by region) Weight specifying means).

  The score assigning means 213 reads the note data including the attribute information 1 to N from the note data DB 32, and performs weighting on the read attribute information based on the weight specified by the regional weight specifying means. And calculating the score of the note display (score calculating means). Specifically, each attribute information is multiplied by the weight specified by the regional weight specifying means, and the total value of the multiplication results is calculated as the score of the note display (see FIG. 5). The calculation by the score calculation means can be expressed by, for example, an equation: score = [(attribute information 1 × weighting factor 1) + (attribute information 2 × weighting factor 2)... (Attribute information 5 × weighting factor 5)]. it can.

  The score note data storage means 214 stores the score calculated by the score assignment means 213, the corresponding note display, and the position information (latitude / longitude) of the note display in association with each other in the score DB 35 as score note data. (See FIG. 5). When the score note data storage means 214 stores the score note data in the score DB 35, it sorts the score note data using the score as a key. The score DB 35 will be described later.

  The map creation display means 22 uses the score DB to display a map for display (map information) for displaying a map corresponding to the display scale, and a map based on the generated map data for display is displayed. And a function of controlling to be displayed on the apparatus. Specifically, the map creation display means 22 includes a display scale determination means 221, an annotation data extraction means 222, a display map data generation means 224, a map display control means 225, and the like.

  The display scale determining means 221 determines (designates) the display scale of the map to be generated. The display scale determining means 221 may automatically determine the scale according to a predetermined condition (for example, selecting in order from the maximum value to the minimum value of the scale), or input by the map creator via the input means 40, for example. The scale can also be determined based on the scale condition to be determined. Moreover, the value and range according to design can be employ | adopted for the value of the display scale of a map, and its range.

  The annotation data extraction unit 222 selects a score belonging to a certain score range according to the determined scale from the scores stored in the score DB 35, and extracts a note display having the selected score from the score DB 35. To do. The constant scoring range corresponding to each scale is set so that the constant scoring range increases as the scale increases, that is, the constant scoring range decreases as the scale decreases. Can be set. Of the scores stored in the score DB 35, a score belonging to a certain score range corresponding to the specified scale is selected, and a note display having the selected score is extracted to display a note with a high score. It is possible to extract an annotation display in an amount optimal for the display scale while extracting the image with priority.

  Specifically, as an example of a condition for selecting a score that belongs to a certain scoring range according to the scale, for example, a condition based on the ranking (standard ranking) such as “up to upper X” or “Y score or higher” The condition (reference score) with the score as a reference can be set. Decreasing the reference rank or reference score increases the fixed score range, and increasing the reference rank or reference score decreases the fixed score range. In general, when the display scale is small, the amount of annotation displayed on the map is small, and when the display scale is large, the amount of annotation displayed on the map is large. Therefore, the reference rank and the reference score are set stepwise so that the note display with a high score is extracted from the note display with a low score as the display scale increases from a small one. For example, if the display scale is “1/100000”, set the extraction condition to “upper 100” or “150 points or more”, and if the display scale is “1/25000”, the extraction condition is “upper 200 "Up to" or "250 points or more" can be set.

  The map data extraction unit 223 extracts map data at a scale corresponding to the display scale from the map data DB 31.

  The display map data generating means 224 is designated based on the note display extracted from the score note data stored in the score DB 35 and the map data extracted from the map data DB 31 according to the designated display scale. It has a function of generating display map data (map information) for displaying a display scale map. For example, the display map data generation means 224 writes the note display extracted by the note data extraction means 222 into the corresponding position of the map data extracted by the map data extraction means 223 based on the position information of the note display. Thus, map data for display is generated. The display map data generation means 224 stores the generated display map data in the display map data DB 36.

  The map display control means 225 controls the map based on the display map data generated by the display map data generation means 224 to be displayed on a predetermined display device. For example, the map display control means 225 extracts display map data corresponding to the target scale from the map DB 36 and causes the display means 50 to display a map based on this display map data. When a map display request is received from an information processing apparatus (not shown) connected via the communication means 10, display map data corresponding to the display scale and display position included in the map display request from the display map DB 36. Is transmitted to the information processing apparatus. The information processing apparatus receives the display map data and displays it on a display or the like. Such extraction and display of map data for display can be realized using conventional techniques.

  The storage means 30 includes a map data DB 31, an annotation data DB 32, an area classification information DB 33, an area weight DB 34, a score DB 35, a display map data DB 36, and the like. Note that the storage unit 30 may be configured by a single storage device, or may be configured by a plurality of storage devices distributed on a network, for example. The database (DB) can be realized by using a conventional technique such as a relational database.

  Although not shown, the map data DB 31 stores map data constituted by, for example, a vector method or a raster method in association with latitude / longitude information.

  The annotation data DB 32 stores annotation data for representing the name of the annotation object on the map by a character string or the like. Specifically, as shown in FIG. 2, the note ID for uniquely identifying the note display, the note display, the attribute information of the note object (attribute information 1, attribute information 2... Attribute information N), The latitude / longitude (location information) for specifying the position of the annotation display (and / or the annotation object) on the map, the area ID of the region to which the annotation display (and / or the annotation object) belongs, and the like are stored in association with each other. . In the present embodiment, since “station name” is set as the note display, a character string indicating the station name is stored in the corresponding area. In the attribute information 1 to 4, “A line”, “B line”, “C line”, and “D line” indicating the number of trains entering the station are set. The number of trains to be stored is stored. In addition, the attribute information 5 is set to “other” indicating a vehicle of a type other than the attribute information 1 to 4, and the number of the corresponding vehicles that are entered is stored in the corresponding area.

  Note that the attribute information of the note object is not limited to that shown in FIG. 2, and can be added, changed, or deleted as appropriate according to the note display, the type and design of the note object. For example, a condition such as a position (first departure or arrival) on a train line entering the station and a position where the station exists (whether or not it exists in a predetermined city) can be set as attribute information. Further, for example, the average number of passengers per day at the station may be set as attribute information. On the other hand, for example, when the note display is “interchange name”, the attribute information can also be set for each type of road on the interchange that is the note target.

  The area division information DB 33 stores area division information for dividing the target map into a plurality of areas. Specifically, as shown in FIG. 3, a region ID for uniquely specifying a region, a region name, and coordinates (east end, west end, north end, south end) demarcating the region are stored in association with each other. In the present embodiment, a “large metropolitan area” area and a “large metropolitan area” area are set, and an area that does not correspond to either “large metropolitan area center” or “large metropolitan area” is “ It is set as “Nationwide” area. Note that the method of segmentation is not limited to that shown in FIG. 3, and is added, changed, or deleted as appropriate according to the area and design of the target map, such as more detailed classification (for example, four or more). It is possible.

  The regional weight DB 34 stores weight information for each region. Specifically, as shown in FIG. 4, the region and attribute information are stored in association with each other, and the region is the region ID and region name set by the region segment setting means 211 (the metropolitan center, the metropolis). The attribute information corresponds to the attribute information (attribute information 1 to attribute information 5) of the note data DB 32. A weighting coefficient applied to the attribute information is stored in a corresponding area of each attribute information. In the present embodiment, the weighting factor is set so that the metropolitan area central portion ≦ the metropolitan area ≦ the nationwide region, but the value of the weighting factor can be appropriately changed according to the design or the like.

  The score DB 35 stores score note data including the score given by the score giving means 213. Specifically, as shown in FIG. 5, the calculated score, the note display ID and note display (station name) of the note display to which the score is assigned, and the latitude / longitude of the note display are associated with each other. Store.

  Although not shown, the map DB 36 stores the display map data generated by the display map data generation means 224 for each display scale.

  Note that the data structure of the above-described annotation data DB 32, regional division information DB 33, regional weight DB 34, score DB 35, and display map data DB 36 is not limited to the above-described structure and items, and, for example, items are appropriately added depending on the design / Can be changed / deleted.

  The input means 40 is for operation and input by the user, and includes numeric keys, alphabet keys, other function keys, selection keys, scroll keys, and the like. A touch panel may also be used. A desired menu is selected from the menu screen displayed on the display means 50 that is an output means, and various input operations including input of area classification information, weight information, and the like are performed by operating keys and the like. .

  The display means 50 is for displaying a menu screen, a map corresponding to the display scale, and the like, and the content thereof is not limited, but for example, a liquid crystal display or the like is applicable. When the user operates the input unit 40, an input screen or the like for setting area classification information, weight information, and the like is displayed. Further, a map based on the display map data read by the map display control means 225 is displayed.

(Outline of operation of map information processing apparatus 1)
Next, the outline | summary of operation | movement of the map information processing apparatus 1 comprised as mentioned above is demonstrated.

  FIG. 6 is a flowchart showing an example of score annotation data creation processing by the map information processing apparatus 1. Note that the processing steps described below can be executed in any order or in parallel as long as the processing contents do not contradict each other.

  When the area classification setting unit 211 receives, for example, the area classification information input by the map creator via the input unit 40 (S100), the area classification setting unit 211 stores the received area classification information in the area classification information DB 33 (S101) (FIG. 3). For example, when an area name and coordinate information are received from the map creator, an area ID is assigned and stored in the area division information DB 33.

  When the weight setting unit 212 receives, for example, the weight information for each region input by the map creator through the input unit 40 (S102), the weight setting unit 212 stores the received weight information for each region in the region-specific weight DB (S103). (See FIG. 4).

  The score assigning means 213 reads target note data (target note data) from the note data DB 32, and refers to the region division information DB 33 based on the coordinates (latitude / longitude) included in the read target note data. Thus, the region to which the target note display (and / or the note object) belongs is specified (S104). For example, the score assigning means 213 identifies whether “XXX station” shown in FIG. 2 belongs to “central area of metropolitan area”, “metropolitan area”, or “national”, and the area ID of the identified area is recorded as annotation data. Store in DB32. In FIG. 2, the area ID corresponding to “Nationwide” is stored.

  When the area is specified, the score assigning means 213 reads the weight for each attribute information of the area from the area weight DB 34 (S105). Further, each attribute information of the note object of the note display is read from the note data DB 32, and the attribute information of the read note object is read based on the weight for each attribute information read from the regional weight DB 34. And weight each. For example, the score assigning unit 213 calculates a score by multiplying the weights corresponding to each attribute information and summing the multiplication results (S105). When the annotation display is “XXX station” shown in FIG. 2 and the specified area is “national”, the score of “XXX station” is attribute information 1 (0 × 100) + attribute information 2 (0 × 55). ) + Attribute information 3 (1 × 35) + attribute information 4 (0 × 22) + attribute information 5 (1 × 13) = 48. In addition, the structure which weights with respect to each attribute information is not restricted to this, The structure of weighting according to design etc. can be employ | adopted suitably.

  The score note data storage means 214 associates the calculated score with the corresponding note display and coordinates (latitude / longitude) and stores them in the score DB 35 as score note data (S106).

  The score note data storage means 214 determines whether or not the score has been calculated for all the note displays (S107). If the score has not been calculated for all the note displays (S107; NO), the process returns to S104. A score is calculated for the next note display. On the other hand, when scores are calculated for all the annotation displays (S107; YES), the score annotation data stored in the score DB 35 is sorted in ascending order using the scores as keys (S108).

  According to the above, since the score calculated based on the attribute information of the note object of the note display is given to the note display, the importance of the note display can be quantified based on the objective standard. It becomes possible. As a result, it is easy to select a note display to be displayed on the map for each display scale.

  Hereinafter, an example of processing for generating and displaying display map data by selecting a note display corresponding to the display scale using the score note data created in this way will be described. Note that the process of selecting the note display according to the display scale using the score note data is not limited to the processing content described below, and can be changed as appropriate according to the specifications and design.

  FIG. 7 is a flowchart showing an example of map creation display processing by the map information processing apparatus 1. Note that the processing steps described below can be executed in any order or in parallel as long as the processing contents do not contradict each other.

  The display scale determining means 221 determines a display scale (target scale) to be a target (S201). The target scale may be determined based on, for example, a scale condition input by the map producer via the input means 40, or may be determined based on a preset minimum scale value, maximum scale value, scale unit, or the like. May be automatically determined step by step.

  The annotation data extraction unit 222 extracts score annotation data that matches the extraction condition set corresponding to the target scale from the score DB 35 (S202). As the extraction condition, for example, a reference rank (for example, “up to upper X” or the like) or a reference score (for example, “Y score or higher” or the like) can be applied. As for the value of the standard ranking and the standard score, the note display amount increases as the target scale increases while the note display amount decreases as the target scale decreases while the note display with high score is extracted preferentially. To be set. For example, as the target scale increases, the reference rank is lowered stepwise (eg, up to the top 100 → up to the top 200 → up to the top 300), or the reference score is lowered stepwise (example) : 150 points or more → 125 points or more → 100 points or more) can be set.

  Next, the display map data generation means 224 reads map data corresponding to the target scale from the map data DB 31 (S203).

  The display map data generating means 224 writes the note display included in the extracted score note data in the corresponding position of the map data read from the map data DB 31 based on the position information of the note display (S204). The display map data generation means 224 stores the map data in which the annotation display is written in the display map data DB 36 (S205).

  It should be noted that when writing the note display to the map data, the note display writing position may be close or overlapped, that is, another note display may already be written at the position where the note display is to be written. In such a case, it is possible to control so that a note display with a high score is given priority. For example, the display map data generation means 224 controls the annotation display included in the extracted score annotation data to be written in the order of the highest score, and another annotation display is already present at the position where the annotation display is to be written. If written, the note display is not written. Thereby, the note display with a high score is maintained on the map data. As another example, the display map data generating means 224 compares the score of another note display already written with the score of the note display to be written, and displays the note to be written from now on. If the score is higher, the note display may be overwritten with the already written note display.

  The display map data generation means 224 determines whether or not the writing process has ended for all the annotation displays extracted for the target scale (whether or not display map data has been generated) (S206), and ends. If not (S206; NO), the process returns to S204, and the writing process is repeated for the next relevant note display. For example, when the annotation display is extracted up to “the top 100”, the annotation display for the top 100 is written on the map data.

  On the other hand, if the writing process has been completed (S206; YES), the display map data generating means 224 determines whether or not the annotation display extraction and writing process has been completed for all display scales (display map). It is determined whether or not data has been generated (S207). If not completed (S207; NO), the process returns to S201, and the note display extraction and writing process is repeated for the next corresponding target scale.

  On the other hand, when the annotation object extraction and writing process has been completed (S207; YES), the display map data generation unit 224 ends the map generation process.

  The map display control means 225 controls the display map data generated by the display map data generation means 224 to be displayed on the display device (S208). The display device for displaying the display map data corresponds to the display device provided in the information processing terminal connected via the display means 50 or the network. When the map display control means 225 receives a map display request from, for example, an information processing terminal connected via the communication means 10, the map display control means 225 corresponds from the display map data DB 36 based on the display scale and display position included in the map display request. The display map data for the scale of the area to be searched is retrieved, and the retrieved display map data is transmitted to the information processing terminal. When receiving the map data for display, the information processing terminal displays it on a display device such as a display (S208).

  FIG. 8 is a diagram showing an example of the map displayed in this way. 8A is a map displayed at a display scale 1 / X, and FIG. 8B is a map displayed at a display scale 1 / Y (Y <X). Here, for the sake of convenience, the note display is indicated by a score rather than a station name. As shown in the figure, the display scale 1 / X displays a higher score, and the display scale 1 / Y displays a lower score. In addition, note indications (station names) are displayed in metropolitan areas and nationwide areas, respectively.

  As described above, according to this embodiment, since the score calculated based on the attribute information of the note object of the note display is assigned to the note display, the importance of the note display is based on the objective standard. Can be quantified. As a result, it is possible to select the note display to be displayed according to the display scale based on objective criteria, greatly reducing the labor and time of the map maker, and creating map data for display. Become more efficient.

  Further, according to the present embodiment, since the note display to be displayed is selected based on the score of the note display, it is possible to appropriately control the amount and quality of the note display to be displayed according to the display scale. . In addition, it is possible to preferentially display notes with high importance, so for example, when the user increases the scale step by step, the items with the highest importance are gradually displayed in addition. On the other hand, when the user reduces the scale stepwise, the less important items are gradually deleted and only the higher importance items remain, so that the user's readability can be improved. In addition, note of necessary (important) facilities may not be displayed on the map due to the scale of the map. However, the map provided by the map information processing apparatus according to the present embodiment requires necessary (important) facilities. The note display will be displayed on the map.

  Furthermore, according to the present embodiment, weighting is performed so that there is no regional difference in the score of each note display, so even if a fixed extraction criterion is provided for each display scale, for example, a note is added to a city area. It is possible to avoid such a situation that the display is concentrated and the note display is hardly displayed in the local area, and the note display displayed on the map can be homogenized.

(Other embodiments)
In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the summary of this invention, it can implement in other various forms. For this reason, the said embodiment is only a mere illustration in all points, and is not interpreted limitedly.

  For example, in the above-described embodiment, the case where the note display is “station name” has been described. However, the note display to which the present invention is applied may be related to an object on a map, for example, “interchange name”, “ It can also be applied to “department name”, “city name”, “park name”, and the like. In this case, attribute information corresponding to the note object of each note display can be set. For example, in the case of “interchange name”, the attribute information can be set for each type of road on the interchange. Note that these pieces of attribute information can be applied in the same manner even when the note display is “intersection name”. When the note display is “department name”, for example, “sales”, “sales area”, “location”, “average number of users”, and the like can be set as attribute information.

  In addition, weight changing means for dynamically changing the weight information of the regional weight DB described in the above embodiment according to a certain standard may be provided. For example, the usage status of the user can be set as a certain standard applied by the weight changing means. For example, in the regional weight DB 34 shown in FIG. 4, the weighting coefficient of the A line (attribute information 1) is set to be larger than the weighting coefficient of the D line (attribute information 4). When it is determined that the user is more interested in the D line than the A line, the weight coefficient of the D line (attribute information 4) is larger than the weight coefficient of the A line (attribute information 1). The value of the weight coefficient of the line (attribute information 4) is changed. The degree of interest of the user may be determined by, for example, allowing the user to directly select a desired train type when searching for a map, or if the user uses a route search, It can be determined by the type of train on the route.

  Moreover, although the said embodiment demonstrated the case where the score annotation data according to a display scale was extracted from score DB35, and the map data for a display were produced | generated, score annotation data was previously extracted for every display scale from the score DB35. A score data file for each display scale may be prepared, and the map data for display may be generated using the score data file for each display scale.

  When generating map data for display of a specific area, note displays belonging to the specific area (for example, Kyushu area) are extracted from the score DB 35, and extraction conditions for each display scale are provided from the extraction result. Each note display to be extracted may be extracted, and the extracted note display may be written in map data of each display scale of the specific region (for example, Kyushu region).

DESCRIPTION OF SYMBOLS 1 ... Map information processing apparatus, 10 ... Communication means, 20 ... Control means, 21 ... Score note data creation means, 211 ... Area division setting means, 212 ... Setting means, 213 ... Score calculation means, 214 ... Score note data storage means 22 ... map creation display means, 221 ... display scale determination means, 222 ... note data extraction means, 223 ... map data extraction means, 224 ... display map data generation means, 225 ... map display control means, 30 ... storage means, 31 ... Map data DB, 32 ... Note data DB, 33 ... Regional segment information DB, 34 ... Regional weight DB, 35 ... Score DB, 36 ... Display map data DB, 40 ... Input means, 50 ... Display means

Claims (7)

Map data storage means for storing map data relating to a plurality of maps with different scales divided into a plurality of regions;
Note data storage means for storing note data in which note display information related to the note display displayed on the map, position information of the object of the note display, and attribute information of the object of the note display are associated with each other When,
An area-specific weight storage means for storing weight information that associates the attribute information that can be taken by the annotation display object and the weight assigned to the attribute information, which is set for each area of the map;
The area to which the object belongs is specified based on the position information stored in the annotation data storage means, and the weight information set for the area to which the specified object belongs is obtained from the area-specific weight storage means. Weight identification means to identify;
By reading the attribute information of the object of the annotation display from the annotation data storage means, and performing weighting on the read attribute information based on the weight information specified by the weight specifying means, A calculation means for calculating a score;
Score annotation data storage means for storing the score and the annotation display in association with each other;
An annotation display extraction means for selecting a score belonging to a certain score range according to a specified scale among the scores, and extracting an annotation display corresponding to the selected score from the score annotation data storage means;
Map data extraction means for extracting map data of the map corresponding to the specified scale from the map data storage means;
Map display control means for controlling to display the extracted annotation display in a state of being superimposed on a map based on the extracted map data;
A map information processing apparatus comprising:   The map information processing apparatus according to claim 1, wherein the fixed score range corresponding to the scale is set so as to change according to the change of the scale. The annotation display extraction means includes:
A score belonging to a certain score range corresponding to a specified scale is selected from the scores stored in the score annotation data storage means based on a reference score set for each scale. Item 2. The map information processing apparatus according to item 1. When the score note data stored in the score note data storage means is stored by rearranging the scores included in the score note data as keys,
The annotation display extraction means includes:
A score belonging to a certain scoring range corresponding to a specified scale is selected from the scores stored in the scoring note data storage means based on a reference order set for each scale. Item 2. The map information processing apparatus according to item 1. A map information processing method in a map information processing apparatus,
The map information processing apparatus
Map data storage means for storing map data relating to a plurality of maps with different scales divided into a plurality of regions;
Note data storage means for storing note data in which note display information related to the note display displayed on the map, position information of the object of the note display, and attribute information of the object of the note display are associated with each other When,
An area-specific weight storage unit that stores weight information that associates the attribute information that can be taken by the annotation display target and the weight assigned to the attribute information, which is set for each area of the map;
The map information processing apparatus specifies an area to which the object belongs based on the position information stored in the annotation data storage unit, and weight information set for the area to which the specified object belongs, Identifying from the regional weight storage means;
The map information processing apparatus reads the attribute information of the target object of the annotation display from the annotation data storage unit, performs weighting based on the specified weight information with respect to the read attribute information, and aggregates the information . Calculating a score for the annotation display;
The map information processing apparatus stores the score and the annotation display in association with each other in a score annotation data storage unit;
The map information processing apparatus selects a score belonging to a certain score range corresponding to a specified scale out of the scores, and extracts a note display having the selected score from the score note data storage means. Steps,
The map information processing device extracting map data of a map corresponding to the designated scale from the map data storage means;
Controlling the map information processing apparatus to display the extracted annotation display in a state of being superimposed on a map based on the extracted map data;
A map information processing method comprising:   A program for causing a computer to execute the method according to claim 5.   A computer-readable recording medium on which the program according to claim 6 is recorded.