JP2004301956A - Device for creating network for pedestrians, and method and program therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for creating a network for pedestrians permitting to efficiently create a network for pedestrians. <P>SOLUTION: A date storage part 1 stores road network data including data on the roads where automobiles can pass through. The conditions to be satisfied which should be added to the roads for pedestrians among the roads included in the road network data are inputted to an information entry part 2. A pedestrians' network creation part 4 decides what should be added to the roads for pedestrians among the roads included in the road network data based on the road network data and the given conditions. Then, the pedestrians' network creation part 4 creates the network data for pedestrians including the data on the roads for pedestrians to be added to the decided roads. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pedestrian network generation device, a pedestrian network generation method, and a program for generating a pedestrian road network for pedestrian road guidance and the like.
[0002]
[Prior art]
2. Description of the Related Art While road guidance systems for automobiles have become widespread, recently, demands for road guidance systems for pedestrians have been increasing.
[0003]
In the same way that road network data obtained by converting a road network into a road guidance system for automobiles is used, a road guidance system for pedestrians uses network data for pedestrians, that is, pedestrians such as sidewalks and crosswalks. Network data that converts the road network for passengers into data is required.
[0004]
However, conventionally, in order to generate a network for pedestrians, it has been necessary to actually measure each sidewalk or pedestrian crossing and to input the resulting data with a digitizer or the like.
[0005]
Regarding generation of a roadway network, for example, the techniques of Non-Patent Documents 1 to 3 are known on a research basis.
[0006]
[Non-patent document 1]
"A Method for Generating Road Networks from Vector Map Images", Masahiko Horie, Toshihiro Ueda, Seiichiro Tan, Noboru Babaguchi, Tadahiro Kitahashi, IEICE, IEICE IE94-134, PRU94-134 (1995-03) Pp. 33-40
[0007]
[Non-patent document 2]
"Extraction of Road Network from Map Images: Correction of Fine Line Figures near Intersections", Wataru Itinaga, Noritaka Yoneyama, Ichiro Matsuda, Susumu Ito, Transactions of IEICE Transactions 1998, D-12 96 pp. 295
[0008]
[Non-Patent Document 3]
"Extraction of Road Network from Map Image-A Study on Optimal Arrangement of Nodes", Wataru Itinaga, Noritaka Yoneyama, Ichiro Matsuda, Susumu Ito, Transactions of the Institute of Electronics, Information and Communication Engineers 1998, D-12-97, pp. 296
[0009]
[Problems to be solved by the invention]
In the conventional method of inputting survey data obtained by actual measurement to generate a network for pedestrians one by one using a digitizer or the like from the beginning, it is very costly and extremely inefficient. In addition, an extremely high burden is imposed on the input operator.
[0010]
The present invention has been made in consideration of the above circumstances, and has as its object to provide a pedestrian network generation device, a pedestrian network generation method, and a program that can efficiently generate a pedestrian network. And
[0011]
[Means for Solving the Problems]
A pedestrian network generation device according to the present invention includes a storage unit that stores road network data including data on a road through which a car can pass, and a pedestrian road among roads included in the road network data. Input means for inputting a condition to be satisfied by the one to be added; and determining a road to which the pedestrian road should be added among roads included in the road network data based on the road network data and the condition. And determining means for generating pedestrian network data including data on a pedestrian road to be added to the road determined by the determining means.
[0012]
The method for generating a pedestrian network according to the present invention further comprises the steps of: storing road network data including data relating to a road through which a car can pass; and, among the roads included in the road network data, pedestrian roads. Inputting a condition to be satisfied by a road to be added, and determining a road to which the pedestrian road should be added among roads included in the road network data based on the road network data and the condition. And generating pedestrian network data including data on a pedestrian road to be added to the determined road.
[0013]
Further, the present invention is a program for causing a computer to function as a pedestrian network generation device, the function of storing road network data including data relating to a road through which a car can pass, and the function of storing the road network data. Among the included roads, a function for inputting a condition to be satisfied by a pedestrian road to be added, and the road network data and the road included in the road network data based on the condition, A function stage for determining a pedestrian road to be added and a function for generating pedestrian network data including data on a pedestrian road to be added to the determined road. It is a program.
[0014]
Note that the present invention relating to the apparatus is also realized as an invention relating to a method, and the present invention relating to a method is also realized as an invention relating to an apparatus.
[0015]
Further, the present invention according to an apparatus or a method has a function for causing a computer to execute a procedure corresponding to the present invention (or for causing a computer to function as means corresponding to the present invention, or a computer having a function corresponding to the present invention). The present invention is also realized as a program (for realizing the program), and is also realized as a computer-readable recording medium on which the program is recorded.
[0016]
According to the present invention, a pedestrian network can be automatically generated from an existing road network, and the operator only has to perform checking / correction work as necessary. Network data can be generated efficiently.
[0017]
Also, if the data format of the pedestrian network is the same as the data format of the roadway network, only the position data, attributes such as sidewalk, pedestrian crossing, and pedestrian bridge, and attributes such as the width of the sidewalk can be changed. Thus, a pedestrian network can be easily constructed.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the invention will be described with reference to the drawings.
[0019]
FIG. 1 shows a configuration example of a pedestrian network generation device according to an embodiment of the present invention.
[0020]
As shown in FIG. 1, the present pedestrian network generation device includes a data storage unit 1, an information input unit 2, a road shape analysis unit 3, a pedestrian network generation unit 4, a presentation unit 5, a data confirmation / correction unit. 6 is provided.
[0021]
The data storage unit 1 is for holding map data as basic data when generating a pedestrian network related to a pedestrian road (for example, a sidewalk and a crosswalk). In the present embodiment, as the map data, data of a road network (road network) relating to vehicle roads through which automobiles can pass (for example, roads and roads with no distinction between roads and sidewalks) is used. The map data may include, in addition to the road network, basic data such as a map image and information on landmarks serving as landmarks for generating a road map and a road guide text.
[0022]
Although the road network and the pedestrian network may be managed separately, in the present embodiment, as described later, the data format of the road network and the data format of the pedestrian network are basically different. Is the same format and is managed uniformly. Whether the road is a pedestrian road (data of a pedestrian network) or a vehicle road (data of a road network) can be distinguished by an attribute. By uniformly managing both data in the same format, it is useful not only for search processing in processing that handles the relationship between sidewalks and roadways, but also when a pedestrian guidance system handles this data. Will help in the process.
[0023]
In the present embodiment, two types of sidewalks and pedestrian crossings are handled as pedestrian roads that are automatically generated. They are still distinguished by attributes. Of course, a configuration in which other types such as a pedestrian bridge and an underpass are automatically generated is also possible. Further, in addition to the type of the pedestrian road, it can have various attribute information such as a sidewalk width.
[0024]
A vehicle road can also have various attributes. For example, road types such as national roads, prefectural roads, expressways, motorways, etc., road width, distinction between elevated and ground or underground, speed limit, whether pedestrians can cross, and whether there is a bicycle road at the end Various things, such as no, can be considered.
[0025]
The information input unit 2 is for inputting information such as conditions for generating a pedestrian road.
[0026]
The road shape analysis unit 3 reads road network data from the data storage unit 1 based on the information obtained by the information input unit 2, and analyzes the road shape.
[0027]
The pedestrian network generation unit 4 is for generating pedestrian network data (in the present embodiment, data on sidewalks and pedestrian crossings) based on the result of the road shape analysis unit 3.
[0028]
In the present embodiment, generally, for a sidewalk, if a condition for generating a sidewalk is satisfied for a road to which a sidewalk is to be added, a sidewalk is generated for the target road, and As for a sidewalk, if a condition for generating a pedestrian crossing is satisfied for a road to which a pedestrian crossing is to be added, a pedestrian crossing is generated for the target road. In this embodiment, the pedestrian crossing is basically added to the intersection.
[0029]
The presentation unit 5 is for presenting the generated pedestrian network. In this presentation, for example, a road network may be presented together, or if there is a map image, for example, it may be presented together.
[0030]
The data confirmation / correction unit 6 is for the user to confirm / correct the generated data of the pedestrian network.
[0031]
FIG. 2 shows an example of a processing procedure of the pedestrian network generation device of the present embodiment.
[0032]
First, in step S1, the information input unit 2 inputs a condition relating to a road shape for generating pedestrian road data (a sidewalk line segment and the like).
[0033]
Next, in step S2, the road shape analysis unit 3 extracts information on the corresponding road line from the data storage unit 1 based on the input information.
[0034]
Next, in step S3, the road shape analysis unit 3 analyzes the road shape based on the extracted information.
[0035]
Next, in step S4, a pedestrian road is generated using supplementary data (attribute data) such as the road type and the road width of the road line in step S2.
[0036]
Next, in step S5, confirmation and correction are performed according to the purpose.
[0037]
Then, in step S6, the result is output.
[0038]
Hereinafter, the pedestrian network generation processing of the present embodiment will be described in more detail using a specific example.
[0039]
(Step S1)
In this embodiment, as a condition input of the road shape in step S1, a condition for generating a sidewalk and a condition for generating a pedestrian crossing are separately input.
[0040]
As a method for inputting those conditions, any method may be used. For example, by displaying a menu of options and accepting a selection input by the user, input may be performed, a document defining conditions may be input, or a program condition may be set in advance. They may be given, or they may be used in combination. In any case, it is desirable for the user to be able to instruct conditions of a road on which a sidewalk is to be generated, conditions of an intersection where a pedestrian crossing is to be added, and the like.
[0041]
FIG. 3A shows an example of a sidewalk generation condition (sidewalk generation rule). In this example, when the road type of the target road is “national road” and the road width is “4 m or more”, a sidewalk is generated for the target road, and the road type is “prefectural road” and Even if the road width is “4 m or more”, a sidewalk is generated, and no sidewalk is generated for a road type of “expressway”, and the road width is “over 20 m” regardless of the road type. The rule is not to create a sidewalk for things.
[0042]
FIG. 3B shows an example of a crosswalk generation condition (crosswalk generation rule). In this example, when the road type of the target road is “national road” or “prefectural road” and the road width is “4 m or more”, a pedestrian crossing is generated for the target road, and Regardless, the rule is that a sidewalk is not generated even for roads with a road width exceeding "20 m". In this case, the condition corresponding to (3) in FIG. 3A is not used because there is no phase for determining whether to add a pedestrian crossing to the expressway.
[0043]
FIG. 3A and FIG. 3B are examples, and various conditions and rules can of course be adopted.
[0044]
For example, in the present embodiment, a case where a relatively simple rule is used is illustrated. However, a more complicated or precise rule may be used so that the load of a subsequent correction work by the user becomes lighter. . Further, in the present embodiment, the pedestrian bridge and the underpass are not generated, and the configuration is such that the user corrects as necessary later. Of course, a generation rule for the pedestrian bridge and the underpass is introduced, and the pedestrian bridge and the underpass are generated. An underpass or the like may be included in the pedestrian network and generated.
[0045]
Here, an example of the data format of the road network and the pedestrian network will be described.
[0046]
The road network and the pedestrian network can be represented by nodes and arcs, for example.
[0047]
FIG. 4A shows a structural example of a node, and FIG. 4B shows a structural example of an arc.
[0048]
In a road network, a node is a branch point of the road network, and is present, for example, at an intersection or a turn, or at a node portion when a road is approximated by a straight line. An arc is a straight line segment connecting nodes. A node basically represents a center line of a road, and a road type, a road width, and the like have attribute information of the node. Parallel lines at a distance of road width / 2 on both sides of the arc correspond to both ends of the road.
[0049]
In the pedestrian network, the node is a branch point of the pedestrian network, and is present at, for example, an intersection or a turn, or a node portion when the corresponding road is approximated by a straight line. An arc is a straight line segment connecting nodes. A node is basically not a centerline of a sidewalk or pedestrian crossing, but a part corresponding to the roadside end of the sidewalk (boundary to the road) or a roadside end heading in the same direction as the crosswalk. (A boundary with the extension of the end of the road), and the sidewalk type, the width of the sidewalk and the crosswalk, etc. are held as attribute information of the node. The arc and a parallel line at a distance of the sidewalk width from the arc correspond to both end portions of the sidewalk.
[0050]
For example, in the examples of FIGS. 4A and 4B, the ID of the connected arc is held only in the node data, but the ID of the connected node is also held in the arc data. Alternatively, the IDs of the arcs to be connected to each other may be stored in the data of the arcs connected via the same node.
[0051]
Further, for example, between nodes or arcs in a road network and nodes or arcs in a pedestrian network, one having a close relationship with one or the other or both has link information (for example, generated link information). The IDs of the nodes and links related to each other may be added as in the data from which the data is generated.
[0052]
For example, when a sidewalk arc (for the road) is generated based on data of a certain road arc, the ID and / or position data of the sidewalk arc is added to the data of the road arc, and the data of the sidewalk arc is added. May be added to the road arc ID and / or position data. This is useful not only for search processing in processing that handles the relationship between sidewalks and roadways, but also because this network data can be used separately for drawing and guidance, for example, for pedestrian guidance, etc. is there.
[0053]
(Step S2)
In the road network extraction in step S2, data matching the conditions input in step S1 is searched from the map data stored in the data storage unit 1.
[0054]
At this time, a group of arcs connected to the node can be extracted from the node, and a series of road segments can be traced by tracing the arc to the node and the node to the arc.
[0055]
Road networks can be managed in any way, and because of the nature of map data, they have latitude and longitude information, so it is easy to search for peripheral data and connected data, so road information can be easily extracted. It is.
[0056]
(Step S3)
Next, the road shape analysis processing by the shape analysis in step S3 will be described.
[0057]
As a specific example, a process for analyzing the shape of an intersection will be described.
[0058]
The road shape analysis unit 3 prepares a mask having a size several times the road width in the traveling direction with respect to the road network data near the intersection of the network obtained by the road network extraction, and uses the mask to generate a road network data. The data is cut out around the intersection to be analyzed. This situation is illustrated in FIG.
[0059]
Next, the road network data included in the area cut out using the mask (road network cutout area) is subjected to pattern analysis, and the number n of road segments extending from the intersection to the outside of the road network cutout area (in this example, n) , N = 4), the direction of each road segment (the angle difference from the approach direction), and the road width (W). This situation is illustrated in FIG.
[0060]
In the above description, an intersection with two orthogonal roads has been described as a specific example. However, the same applies to a three-way road, a five-way road, or an irregular four-way road where two T-shaped roads are close to each other. The method is applicable (think about road segments extending outside the cut-out area).
[0061]
By such a road shape pattern analysis, it is possible to determine whether or not to add a sidewalk or a crosswalk to a target road or intersection.
[0062]
In the above, an example is shown in which the direction and the road width are obtained. However, for example, when the road width is used as the generation condition but the direction is not used, the direction need not be obtained. That is, all predetermined information may be obtained (regardless of the necessity thereof), or only necessary information may be obtained according to the conditions input in step S1. .
[0063]
(Step S4)
Next, data generation in step S4 will be described.
[0064]
First, sidewalk generation will be described as a specific example.
[0065]
In the sidewalk generation, if the condition input in step S1 is, for example, “generate on all national roads having a road width of 4 m or more”, a network having a national road and a road width of 4 m or more is extracted in step S2, and the extracted road network is extracted. , Information on the road width is extracted from the data, and parallel lines are generated on both sides of the target road at a distance of road width / 2 around the target road.
[0066]
FIG. 6 shows an example of a processing procedure of sidewalk generation in this case.
[0067]
FIG. 7 shows an example of a road network. In the drawing, points indicate nodes, and line segments indicate arcs. This point is the same for each of the drawings referred to hereinafter (however, description of nodes (dots) is omitted in some drawings).
[0068]
Hereinafter, a case where sidewalk data is generated in the road network of FIG. 7 will be described as an example.
[0069]
In step S11, as shown by the bold line in FIG. 8, the connected components from the intersection of the road to the intersection are extracted, and the average road width of the road is determined.
[0070]
In step S12, as shown by the dotted line in FIG. 9, a parallel line segment is generated on both sides of the connected component at a distance corresponding to the average road width obtained above (the surplus portion exceeding the intersection of the parallel line segment is described. Is omitted).
[0071]
In step S13, as shown in FIG. 10, the end points of the generated parallel line segments are connected (remaining portions of the parallel line segments are deleted and missing portions are added), and the lines are smoothly connected.
[0072]
In step S14, as shown in FIG. 11, the same processing is performed on the road adjacent to the intersection, and the intersection with the parallel line segment of the adjacent road is obtained (the surplus portion of the parallel line is deleted).
[0073]
In step S15, the obtained parallel lines are converted into arc and node data in the same manner as the road data.
[0074]
FIG. 12 illustrates arcs and nodes of the sidewalk network when a sidewalk is added to the entire road network of FIG.
[0075]
Actually, by copying the road arc and the road node constituting the connected component, the sidewalk arc and the basic data of the sidewalk node constituting the corresponding parallel line segment are generated, and the generated sidewalk arc and the sidewalk node are generated. , The ID data (it is only necessary to newly issue), the position data (the end point in the case of smooth connection), the attribute data (for example, the type indicating the sidewalk, the sidewalk width, etc.), the link data, etc. are appropriately set. Thereby, the data of the pedestrian network can be generated.
[0076]
The width of the generated sidewalk may be set to a predetermined value (for example, 80 cm or 1 m), or may be set according to the type and width of the corresponding road (for example, the wider the road, (E.g., widening the sidewalk).
[0077]
Further, in the above description, the average road width is obtained for the connected component. Instead, when the road widths of the adjacent arcs are different, the road widths of the respective arcs are changed (for example, the average of the road widths of the arcs is the average of the arcs). The arcs having different road widths may be connected smoothly by continuously changing them (to have the same road width).
[0078]
By repeatedly performing such processing, a sidewalk is generated for all target roads.
[0079]
Next, a crosswalk generation will be described as a specific example.
[0080]
In the pedestrian crossing generation, the condition input in step S1 is, for example, as shown in FIG. 13, for example, "if a road of 4 m or more intersects with a road of 4 m or more, generate crossing information for any road." In the case of the condition, for example, an arc of the pedestrian crossing is generated at the intersection illustrated in FIG.
[0081]
In the case of a road to which sidewalk data is added, a network can be connected by extending the sidewalk. Actually, since there is data of two sidewalk nodes corresponding to a corner, one pedestrian crossing arc connected to the two sidewalk nodes may be generated.
[0082]
FIG. 15A illustrates a road arc and a node corresponding to FIG. 14, and FIG. 15B illustrates an example in which a pedestrian crossing arc is added thereto. FIG. 16 shows an example of a crosswalk in this case.
[0083]
In addition, when a sidewalk is not added to one of two intersecting roadways, and a pedestrian crossing is added, the same applies as described above, since there is a sidewalk node added to the other roadway.
[0084]
On the other hand, when the sidewalk data is not added to any of the two intersecting roads, and a pedestrian crossing is added, for example, the road arc and the node may be extended (or the road arc may be appropriately extended or divided as necessary). The pedestrian crossing arc and the node may be generated above and then modified later, or the pedestrian arc and the node may be generated at a more natural position, assuming that the pedestrian arc and the node exist. You may keep it.
[0085]
Further, the width of the pedestrian crossing to be generated may be set to a predetermined value (for example, 3 m or 4 m), or may be set according to the type and width of the corresponding road (for example, as the intersection becomes wider, , Widening the crosswalk, etc.).
[0086]
In addition, in order to unify the data format, for example, on a road to which sidewalk data is not added, assuming that sidewalk data has been added, and extending the assumed sidewalk, the pedestrian crossing node and the pedestrian crossing An arc may be generated.
[0087]
Next, FIG. 17 shows another example of the intersection, and a road arc and a node in this case are illustrated in FIG.
[0088]
This example is an intersection where four roads intersect (in terms of road segments) as in the example of FIG. 14, but unlike the example of FIG. 14, the four roads A, A ′, B, and B One of the roads B ′ does not generate pedestrian crossing data because of the narrow lane, and as a result, pedestrian crossing data is generated only at three locations as shown in FIG. In this example, the sidewalk node indicated by reference numeral 30 in the figure is set at a distance of road width / 2 from the arc of the road B '. FIG. 19 illustrates an example of a crosswalk in the case of FIG. 18B.
[0089]
It should be noted that a thin road on which this pedestrian crossing data is not generated can be traversed, so that instead of the pedestrian crossing, pedestrian data (virtual that is not displayed as a pedestrian when displayed on a screen) may be generated. Good. In this case, attribute information indicating that the sidewalk data is virtual sidewalk data may be added. This virtual sidewalk data can be used for internal processing such as processing for pedestrian guidance (handled as pedestrians can cross). FIG. 20 illustrates an arc and a node in this case. The arc indicated by 31 in the figure is a virtual sidewalk arc.
[0090]
Next, FIG. 21 shows another example of a T-shaped intersection, and a road arc and a node in this case are illustrated in FIG. 22 (a).
[0091]
In this example, a narrow road B to which no sidewalk is added intersects with the thick roads A and A '. In this case, the narrow road B is extended to a sidewalk (see 32) on the other side of the thick road. By connecting, pedestrian crossing data 33 or 34 can be generated. In this case, a pedestrian crossing is generated at the center of the road, but may be corrected later by the user.
[0092]
FIG. 22B illustrates an example in which a pedestrian crossing arc is added as described above. In this example, the sidewalk node indicated by 35 in the figure is set at a distance of the road width / 2 from the arc of the road B ′. FIG. 23A illustrates an example of a crosswalk in the case of FIG. 22B.
[0093]
Of course, the pedestrian network generation unit 4 may automatically perform arc division, node generation, and the like so as to generate a pedestrian crossing at a more natural position.
[0094]
FIG. 22C illustrates an example in which a pedestrian crossing arc is added as described above. FIG. 23B shows an example of a crosswalk in this case.
[0095]
The connection method as described above can be changed by appropriately selecting the condition input illustrated in FIG.
[0096]
(Step S5)
The confirmation / correction in step S5 may be the same as that of a conventional general CAD. For example, a map image serving as a background is displayed on a display, a pedestrian network is superimposed (a road network may also be superimposed), and a sidewalk or pedestrian crossing can be identified by color or pattern. By clicking on it with a mouse, etc., to confirm (if the generated data is first left undetermined), to delete an arc or node, to move an arc or node, or to move an arc. Various network edits can be performed, such as an instruction for reconfiguration of a node or a node (division / integration, etc.), an instruction to change attribute information such as a type or width of an arc or a node, or an instruction to add a new arc or a node. Basically, the data confirmation / modification unit 6 changes network data, that is, the contents of arcs and nodes, adds arcs and nodes, and performs operations similar to the conventional CAD, in accordance with the user's instruction. Deletes, splits and merges arcs.
[0097]
The editing method may be any method. For example, the instruction content may be selected by selecting a menu, and the arc or node to be operated may be selected with a mouse.
[0098]
Further, for example, the newly generated sidewalk and pedestrian crossing may be sequentially displayed in different colors to prompt the user to confirm.
[0099]
Further, for example, all the components selected by the user may be determined to the specific attribute specified by the user.
[0100]
In addition, various methods are conceivable.
[0101]
In the present embodiment, it is not necessary to perform a process of instructing an end point of the network from a state where there is no user, or to perform a process of adding or disconnecting a network. It is possible to edit a pedestrian network such as a sidewalk or a pedestrian crossing simply by checking and making appropriate corrections as necessary.
[0102]
(Step S6)
The output in step S6 may be output in the same manner as a conventional map database. For example, the information may be stored in a recording medium, or may be transmitted to a predetermined transmission destination via a communication medium.
[0103]
In the example of the procedure shown in FIG. 2, the output is performed in step S6. However, for example, data is output once after step S4 (for example, stored in an external recording medium), and step S5 is performed. In doing so, it may be input again (for example, read from an external recording medium).
[0104]
Each of the above functions can be realized by being described as software and processed by a computer having an appropriate mechanism.
[0105]
Further, the present embodiment can also be implemented as a program for causing a computer to execute predetermined means, for causing a computer to function as predetermined means, or for causing a computer to realize predetermined functions. In addition, the present invention can be implemented as a computer-readable recording medium on which the program is recorded.
[0106]
Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying constituent elements in an implementation stage without departing from the scope of the invention. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiment. Further, components of different embodiments may be appropriately combined.
[0107]
【The invention's effect】
According to the present invention, it is possible to efficiently generate a pedestrian network.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration example of a pedestrian network generation device according to an embodiment of the present invention;
FIG. 2 is an exemplary flowchart illustrating an example of a processing procedure of the pedestrian network generation device according to the embodiment.
FIG. 3 is a diagram showing an example of a sidewalk generation condition input;
FIG. 4 is a diagram showing an example of a node and an arc;
FIG. 5 is a diagram for explaining the analysis inside the intersection by the road shape analysis unit;
FIG. 6 is a flowchart illustrating an example of a processing procedure of sidewalk data generation.
FIG. 7 is a diagram illustrating an example of a road network to be subjected to sidewalk data generation;
FIG. 8 is a diagram showing an example of a connected component extraction result.
FIG. 9 is a diagram showing an example of a parallel line segment generation example;
FIG. 10 is a diagram showing an example of an end point connection example;
FIG. 11 is a diagram showing an example of an intersection generation example.
FIG. 12 is a diagram showing an example of a sidewalk generation example.
FIG. 13 is a diagram showing an example of a crossing condition input;
FIG. 14 is a diagram illustrating an example of generating a crosswalk.
FIG. 15 is a diagram illustrating an example of generating a crosswalk.
FIG. 16 is a diagram for explaining a crosswalk generation example.
FIG. 17 is a diagram illustrating an example of generating a crosswalk.
FIG. 18 is a diagram for explaining an example of generating a crosswalk.
FIG. 19 is a diagram for explaining an example of generating a crosswalk.
FIG. 20 is a diagram for explaining an example of generating a crosswalk.
FIG. 21 is a diagram for explaining an example of generating a crosswalk.
FIG. 22 is a diagram for explaining an example of generating a crosswalk.
FIG. 23 is a diagram illustrating an example of generating a crosswalk.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Data storage part, 2 ... Information input part, 3 ... Road shape analysis part, 4 ... Pedestrian network generation part, 5 ... Presentation part, 6 ... Data confirmation / correction part

Claims (19)

Storage means for storing road network data including data on roads through which cars can pass;
Input means for inputting a condition to be satisfied by a road to be added with a pedestrian road among roads included in the road network data;
Determining means for determining, among the roads included in the road network data, a road to which the pedestrian road should be added, based on the road network data and the condition;
Generating means for generating pedestrian network data including data on a pedestrian road to be added to the road determined by the determining means. The condition includes a condition regarding the type of the road,
2. The pedestrian according to claim 1, wherein the determining unit determines whether a road type included in the data included in the road satisfies the road type according to the condition. 3. Network generation device. The condition includes a condition on road shape data directly included in the data on the road,
2. The pedestrian according to claim 1, wherein the determination unit determines whether road shape data included in the data included in the road satisfies a condition on the road shape data. 3. Network generator. The condition includes a condition related to road shape data that is not included in the data related to the road,
The determining unit performs an analysis on the road shape according to the condition based on the data on the road, and determines whether or not the road shape data according to the analysis result satisfies the condition regarding the road shape data. The pedestrian network generation device according to claim 1, wherein: The condition includes a condition regarding a relationship between the plurality of intersecting roads,
The determination unit performs an analysis on the relationship between the roads according to the condition based on the data on the road, and the relationship between the roads according to the analysis result satisfies the relationship between the roads according to the condition. The pedestrian network generation device according to claim 1, wherein it is determined whether or not to perform. The pedestrian road has a plurality of types,
The input means, for each type of the pedestrian road, input the condition,
The determining means performs the determination for each type of the pedestrian road,
The pedestrian network generation device according to claim 1, wherein the generation unit performs the generation for each type of the pedestrian road. The pedestrian network generation device according to claim 6, wherein the type of the pedestrian road includes at least a type indicating a sidewalk and a type indicating a crosswalk. The data related to the road included in the road network data and the data related to the pedestrian road included in the pedestrian network data have the same format, and the data related to the road or the pedestrian road is used. The pedestrian network generation device according to claim 1, wherein the data can be identified by attribute information of the data. The data on the road includes data on a straight line segment when the road is linearly approximated, and data on an end point of the straight line segment or an intersection of the straight line segments,
The data on the pedestrian road includes data on a straight line segment when the pedestrian road is linearly approximated, and data on an end point of the straight line segment or an intersection of the straight line segments. The pedestrian network generation device according to claim 8. The pedestrian network generation device according to claim 9, wherein the straight line segment included in the data on the road indicates a center line of the road. The pedestrian according to claim 9, wherein the straight line segment included in the data on the pedestrian road indicates a portion corresponding to the road-side end of the pedestrian road. Network generation device. The generation means generates data on the straight line segment included in the data on the pedestrian road based on a copy of the data on the straight line segment included in the data on the road, 10. The data related to the end point or the intersection included in the data related to the pedestrian road is generated based on a copy of the data related to the end point or the intersection included in the data related to the pedestrian. Pedestrian network generator. The generation means may include a line segment indicating the pedestrian road at a position corresponding to a half of the width of the road with respect to the line segment indicating the road to which the pedestrian road is to be added. 10. The pedestrian network generation device according to claim 9, wherein the pedestrian network generation device generates a pedestrian network. 14. The pedestrian network generation device according to claim 13, wherein the generation unit sets a width of the pedestrian road to be generated to a predetermined value. Means for displaying an image of a pedestrian road represented by the pedestrian network data on a display screen based on the generated pedestrian network data;
2. The apparatus according to claim 1, further comprising: a correction unit configured to receive an edit on the image of the pedestrian road on the display screen, and correct the pedestrian network data based on the edit. 3. Pedestrian network generator. 16. The pedestrian network generation device according to claim 15, wherein the correction unit has a function for performing a correction accompanied by a change in attribute information of data on the pedestrian road. 16. The pedestrian network generation device according to claim 15, wherein the correction unit has a function of performing correction involving addition, deletion, or reconfiguration of data on the pedestrian road. Storing road network data including data on roads through which cars can pass;
Inputting a condition to be satisfied by a road to be added with a pedestrian road among roads included in the road network data;
Determining a road to which the pedestrian road should be added among roads included in the road network data based on the road network data and the condition;
Generating pedestrian network data including data on a pedestrian road to be added to the determined road. A program for causing a computer to function as a pedestrian network generation device,
A function of storing road network data including data on roads through which cars can pass;
A function of inputting a condition to be satisfied by a road to be added with a pedestrian road among roads included in the road network data;
A function stage for determining, based on the road network data and the conditions, a road to which the pedestrian road should be added, among roads included in the road network data;
A function of generating pedestrian network data including data on a pedestrian road to be added to the determined road.

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