Management support system, management support method, and program

Abstract

A management assistance system according to the present disclosure comprises: a determination means for determining the type of road surface markings and the degree of abrasion of the road surface markings; and a display control means for causing the degree of abrasion of each of road surface markings to be displayed on one map using a type of icon that differs for each type of road surface markings, on the basis of the positional information for a location at which a road surface image has been captured.

Description

Technical Field

[0001] The present disclosure relates to a management support system and the like.

Background Art

[0002] For the safety and smooth traffic on roads, road signs, pavement markings, and traffic signal devices are provided on roads. The pavement markings drawn on the road surface wear out over time. Therefore, management of worn pavement markings is necessary.

[0003] Patent Document 1 discloses a pavement marking defect detection device that classifies the presence and type of pavement markings from an image of a road and displays a marker indicating the detected position of the pavement marking on a map. In Patent Document 1, the marker is displayed in a display mode that allows the degree of distortion of the pavement marking to be understood.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] There are multiple types of pavement markings, such as stop lines, crosswalks, and stop signs. In Patent Document 1, it is difficult to immediately grasp which type of pavement marking the wear degree of the multiple types of pavement markings represented on the map indicates.

[0006] An object of the present disclosure is to provide a management support system that can easily grasp the wear degree of pavement markings for each of multiple types.

Means for Solving the Problems

[0007] The management support system relating to this disclosure includes determination means for determining the type of road marking and the degree of wear of said road marking from a road surface image captured from the road surface, and display control means for displaying the degree of wear of each road marking on a single map using different types of icons for each type of road marking, based on location information of the point where the road surface image was taken.

[0008] The management support method relating to this disclosure determines the type of road marking and the degree of wear of the road marking from a road surface image captured from the road surface, and displays the degree of wear of each road marking on a single map using different types of icons for each type of road marking, based on the location information of the point where the road surface image was taken.

[0009] The program relating to this disclosure determines the type of road marking and the degree of wear of the road marking from a road surface image captured from the road surface, and causes a computer to perform a process that displays the degree of wear of each type of road marking on a map using different types of icons for each type of road marking, based on the location information of the point where the road surface image was taken. The program may be stored on a non-temporary recording medium that is readable by the computer. [Effects of the Invention]

[0010] According to this disclosure, the degree of wear of road markings of multiple types can be easily determined. [Brief explanation of the drawing]

[0011] [Figure 1] This is a block diagram showing an example configuration of a management support system 100 according to one embodiment. [Figure 2] This figure shows an example of a road surface image taken from a road. [Figure 3] This is a diagram showing an example screen. [Figure 4] This flowchart shows an example of the operation of the management support system 100 according to one embodiment. [Figure 5] An example of an icon representing a pedestrian crossing is shown. [Figure 6]Shows other display examples of the icon representing the crosswalk. [Figure 7] It is a flowchart showing another operation example of the management support system 100. [Figure 8] It is a diagram showing another example of the screen. [Figure 9] It is a block diagram showing an example of the hardware configuration.

Mode for Carrying Out the Invention

[0012] Hereinafter, referring to the drawings, embodiments of a management support system, a management support method, a program, and a non-temporary recording medium for recording the program according to the present disclosure will be described in detail. This embodiment does not limit the disclosed technology.

[0013] FIG. 1 is a block diagram showing a configuration example of a management support system 100 according to an embodiment. The management support system 100 according to an embodiment includes a determination unit 101 and a display control unit 102.

[0014] In one embodiment, the management support system 100 is used for the management of road markings painted on the road surface with paint. The road markings are markings related to passage drawn on the road surface. The road markings include road signs, lane lines, and unauthorized displays.

[0015] Note that the road surface targeted by the management support system 100 is not limited to a general road on which vehicles and people pass, and also includes a vehicle test course, an airport runway, a guiding road, and the like. That is, the management support system 100 can widely target the road surface on which road markings are drawn.

[0016] The determination unit 101 determines the type of the road marking and the degree of wear of the road marking from the road surface image obtained by imaging the road surface.

[0017] The road surface image is captured by an in-vehicle camera such as a drive recorder. However, the type of camera is not limited to this, and various types of cameras may be used. For example, the road surface image may be captured by a camera mounted on another moving object such as a bicycle or a drone, a camera carried by a person, or a fixed camera installed on the road. The road surface image may be captured by a person or automatically.

[0018] FIG. 2 is a diagram showing an example of a road surface image captured of a road on which a vehicle is running. In the road surface image of FIG. 2, a crosswalk, which is an example of a road marking, is imaged.

[0019] The road surface image captured by the camera may be stored in a database (not shown). At this time, the determination unit 101 may acquire the road surface image from the database. Alternatively, when the management support system 100 is communicably connected to an arbitrary camera by wire or wirelessly, the determination unit 101 may acquire the road surface image from the camera.

[0020] In addition, the determination unit 101 acquires position information of the location where the road surface image was captured together with the road surface image. The position information includes, for example, latitude and longitude, position information by GNSS (Global Navigation Satellite System), GPS (Global Positioning System), or a position on a map.

[0021] The method of acquiring the position is not particularly limited. A device that receives radio waves from GNSS satellites may be provided on a moving object such as a camera or a vehicle. Further, the determination unit 101 may acquire the position information of the newly captured road surface image by, for example, comparing the road surface image stored in the database in association with the position information with the newly captured road surface image.

[0022] Furthermore, the determination unit 101 may acquire the date and time when the road surface image was captured together with the road surface image.

[0023] The determination unit 101 detects, for example, the portion of the road surface where road markings are drawn from the acquired road surface image. The determination unit 101 detects road markings by recognizing the color or shape of the road markings, for example, using known image recognition technology. Road markings are generally drawn with white or yellow paint. However, the determination unit 101 may also detect road markings drawn with blue, green, and other colors.

[0024] There are many types of road markings. These include, but are not limited to, stop lines, pedestrian crossings, stop signs, pedestrian crossing warnings, no overtaking signs, center lines, road boundary lines, and road edge lines.

[0025] The determination unit 101, for example, refers to a database of road marking shapes and determines the type of road marking from the shape of the area where it has detected that a road marking is drawn. The method for determining the type of road marking is not particularly limited. For example, the determination unit 101 may perform road marking detection and determination of the type of road marking simultaneously. The determination unit 101 may also determine the type of road marking by image recognition using a machine learning model of road markings.

[0026] Furthermore, the determination unit 101 may use location information of the location where the road surface image was taken in order to determine the type of road surface marking. For example, the determination unit 101 may refer to a database that stores a correspondence between a location and the type of road surface marking drawn at that location. By referring to the database, the determination unit 101 may determine the type of road surface marking included in the road surface image from the location information of the location where the road surface image was taken.

[0027] The determination unit 101 may refer to a database that stores previously taken road surface images at the location where the road surface image was taken in order to determine the type of road surface marking. For example, it is conceivable that the current degree of wear is high, making it difficult to detect road surface markings from the road surface image. In such cases, it is expected that previously taken road surface images will show a lower degree of wear than the current image. Therefore, by referring to past images, road surface markings that should be included in the road surface image can be recognized. Consequently, the accuracy of determining the type of road surface marking may improve.

[0028] The determination unit 101 determines the degree of wear of the road markings for which the type has been determined. The degree of wear may be expressed in multiple stages, such as "high, medium, low." Alternatively, the degree of wear may be expressed as a numerical value or a percentage. For example, a state where there is no wear on the road markings may be defined as a degree of wear of 0%. For example, the degree of wear may approach 100% as the area where the color of the road surface pavement is visible increases over the area where the road markings are drawn. The degree of wear may be set so that the higher the percentage of the worn area, the higher the value representing the degree of wear. Alternatively, the degree of wear may be defined as the similarity to the shape of unworn road markings stored in the database. In this case, the lower the similarity, the higher the degree of wear.

[0029] The method for determining the degree of wear of road markings is not particularly limited. For example, the determination unit 101 may refer to a database of road marking shapes for each degree of wear and simultaneously determine the type of road marking and the degree of wear. Alternatively, the degree of wear may be determined by a machine learning model that has acquired data on the degree of wear of road markings.

[0030] The display control unit 102 causes a map to be displayed on a display (not shown), such as a computer display or tablet. Figure 3 shows an example of a screen displayed on a display by the display control unit 102. The display control unit 102 displays map 31. Although only one map 31 is displayed on the screen in Figure 3, the display control unit 102 may display multiple maps on the screen.

[0031] The display control unit 102 displays the degree of wear of each type of road marking on a single map, using different types of icons for each type of road marking, based on the location information of the point where the road surface image was taken. The icons include symbols and signs.

[0032] For example, the display control unit 102 displays icons superimposed on the map. The display control unit 102, for instance, identifies the location on the map 31 of the road markings based on the location information of the point where the road surface image acquired by the determination unit 101 was taken. The display control unit 102 displays an icon representing the road markings at the identified location on the map 31.

[0033] If the acquired location information indicates a point other than a road on the map 31, the display control unit 102 may identify a location on the map 31 that is close to the location indicated by the location information and corresponds to a road. With this configuration, errors in the location information are corrected.

[0034] The icons displayed by the display control unit 102 indicate the type of road marking and the degree of wear. The display control unit 102 displays the type of road marking using one attribute of the icon, and the degree of wear using a different attribute from the attribute representing the road marking.

[0035] Icon attributes include, for example, the icon's color, pattern, size, and shape. However, these icon attributes are illustrative and not limited to them. As shown in Figure 3, for example, the display control unit 102 may display the type of road marking by the shape of the icon and the degree of wear of the road marking by the color of the icon. Legend 32 shows the type of road marking represented by the shape of the icon. Legend 33 shows the degree of wear represented by the color of the icon.

[0036] When the degree of wear is represented by the color of the icon, a darker color may indicate a higher degree of wear. The display control unit 102 may also assign and display colors for each range of wear levels. For example, the display control unit 102 may represent road markings with a predetermined level of wear using a red icon. Alternatively, the display control unit 102 may represent road markings with a predetermined low level of wear using a green icon. When the degree of wear is represented by size, a larger icon size may indicate a higher degree of wear.

[0037] Road markings and wear levels may be represented by a combination of multiple attributes. For example, wear levels may be represented by both the color and size of the icon.

[0038] Icon attributes do not need to differ for all types of road markings. In other words, different types of road markings may be represented by icons with the same attributes. For example, a pedestrian crossing and a pedestrian crossing warning may be represented by icons of the same shape.

[0039] The display control unit 102 displays two or more icons representing different types of road markings on a single map 31 so that the user can distinguish and recognize multiple types of road markings. Therefore, the degree of wear of each type of road marking is displayed on the map 31. However, depending on the display range of the map, only one type of road marking may be displayed.

[0040] The display control unit 102 may accept the selection of road markings for which icons should be displayed. For example, the display control unit 102 may control whether or not to display the corresponding type of road marking icon depending on whether the checkbox in the legend 32 is selected.

[0041] Figure 4 is a flowchart illustrating an example of the operation of a management support system 100 according to one embodiment. The determination unit 101 of the management support system 100 determines the type of road marking and the degree of wear of the road marking from a road surface image captured of the road surface (step S1). The determination unit 101 transmits the determined type of road marking and degree of wear to the display control unit 102. In step S1, the determination unit 101 may further acquire location information of the point where the road surface image was taken.

[0042] The display control unit 102 displays the degree of wear of each road marking on a single map using different types of icons for each type of road marking, based on the location information of the location where the road surface image was taken (step S2). In step S2, the display control unit 102 may, for example, obtain location information of the location where the road surface image was taken from the determination unit 101. Furthermore, the display control unit 102 may identify the location of the road marking from the obtained location.

[0043] In this embodiment, the management support system 100 displays the degree of wear of each type of road marking on a single map using different types of icons for each type of road marking. This allows the user to easily understand the degree of wear of multiple types of road markings.

[0044] The embodiments are not limited to the examples described above and can be modified in various ways. Furthermore, the determination unit 101 and the display control unit 102 may be implemented by a single device. Alternatively, the determination unit 101 and the display control unit 102 may be implemented by multiple devices.

[0045] The display control unit 102 may display icons for each type of road marking in various ways. Specific examples of various display modes are shown below.

[0046] The display control unit 102 may also display the degree of wear of the road markings representing each pedestrian crossing surrounding the intersection by representing them in each of the regions into which a single icon is divided, based on the attributes of each region. Figure 5 shows several examples of displaying icons representing pedestrian crossings surrounding an intersection. For simplicity, Figure 5 does not show icons for road markings other than those surrounding the pedestrian crossings surrounding the intersection. In map 31A, the degree of wear of the road markings representing the four pedestrian crossings surrounding the intersection is represented by each of the four regions into which a single icon is divided.

[0047] In map 31B, the degree of wear of the road markings representing the four pedestrian crossings surrounding the intersection is represented by separate icons. The display control unit 102 may switch the display mode to show the degree of wear by representing it with an icon for each intersection, as in map 31A, or by representing it with an icon for each pedestrian crossing, as in map 31B. The display control unit 102 may switch the display mode according to the user's selection.

[0048] The display control unit 102 may switch between displaying an icon for each intersection or an icon for each pedestrian crossing, depending on the area represented by the map being displayed. For example, when the display control unit 102 displays a wide-area map, it displays an icon for each intersection. When the display control unit 102 displays a narrow-area map, it displays an icon for each pedestrian crossing. A wide-area map is generally a map that shows a wide area by zooming out. A narrow-area map is generally a map that shows a narrow area by zooming in. The display control unit 102 may also switch the display mode, depending on the scale of the map being displayed, between showing the degree of wear for each intersection or showing the degree of wear for each pedestrian crossing.

[0049] Figure 6 shows other examples of how icons representing pedestrian crossings surrounding intersections are displayed. When a wide-area map or a large-scale map is displayed, icons may be displayed for each intersection, as in Map 31A. When a narrow-area map or a small-scale map is displayed, icons may be displayed for each pedestrian crossing, as in Map 31C.

[0050] Figure 7 is a flowchart showing an example of the operation of the management support system 100 when the display is switched. Steps S1 and S2 in Figure 7 are the same as steps S1 and S2 in Figure 4, so their explanation is omitted.

[0051] After step S2, the display control unit 102 accepts a change in scale (step S3). Then, the display control unit 102 changes the icon representing the pedestrian crossing and redisplays the wear degree of multiple types of road markings (step S4). In step S4, the display control unit 102 displays the wear degree on a map with a different scale than the map displayed in step S2.

[0052] In addition, the display control unit 102 may limit the number of icons displayed if a single map contains more than a predetermined number of road markings. The threshold for the predetermined number may be appropriately determined, for example, so that the density, which is calculated from the area of ​​the map and the number of icons displayed, is less than a predetermined value.

[0053] Furthermore, the display control unit 102 may limit the number of icons displayed in a sub-region of a map if that sub-region contains more than a predetermined number of road markings. A sub-region is a region of the map divided into a predetermined area. The number of icons to be displayed may be determined for each sub-region. This prevents icons from being densely displayed in some sub-regions. The shape of the sub-region can be defined as, for example, a circle or a square, but is not particularly limited. The predetermined area that divides the map can be appropriately determined, for example, by the size of the map. A sub-region containing more than a predetermined number of road markings includes cases where two road markings are within a predetermined distance of each other.

[0054] For example, the display control unit 102 controls the display to show icons for some of the road markings. For example, the display control unit 102 may show icons for some of the road markings that are close together, and omit the display of icons for the remaining road markings. For example, the display control unit 102 may show icons for road markings with a high degree of wear, and omit the display of icons for road markings with a low degree of wear.

[0055] Furthermore, the display control unit 102 may display road markings of the same type within a predetermined distance using a single icon. For example, the display control unit 102 may calculate a representative value that represents the degree of wear of multiple road markings. The representative value may represent, for example, the average degree of wear of multiple road markings. Alternatively, the representative value may represent the degree of wear of the road marking with the highest degree of wear among multiple road markings. Based on the calculated representative value, the display control unit 102 displays multiple road markings using a single icon.

[0056] For example, the display control unit 102 may limit the number of icons displayed in a partial area by displaying the degree of wear of at least two or more road markings within that partial area using a single icon.

[0057] The display control unit 102 may display or control the same type of road markings as a single icon based on conditions other than distance. For example, the display control unit 102 may display or control multiple road markings as a single icon for each unit in which repairs are performed. For example, adjacent roads are repaired as the same unit. Therefore, the road markings of adjacent roads may be displayed as a single icon. Even if the two-dimensional distance is short, multiple roads that intersect at different levels, or general roads and expressways, may have different units for repairs. Therefore, the road markings drawn on these roads may each be displayed as separate icons.

[0058] An icon representing the wear level of a certain type of road marking may have different attributes from icons representing the wear level of each individual road marking. In other words, the shape of an icon representing multiple road markings may differ from the shape of an icon representing the wear level of each individual road marking.

[0059] The display control unit 102 may display icons representing the degree of wear based on a display priority determined for each type of road marking. For example, the display control unit 102 may control the display of icons for some types of road markings based on the display priority. The display control unit 102 may also control the display of icons for some types of road markings based on the display priority only when there are many road markings included in the map. For example, the display control unit 102 may display icons representing a predetermined number of road markings in order of highest display priority. Alternatively, the display control unit 102 may highlight and display some types of road markings based on the display priority.

[0060] The display priority may be set by the user. This is because different users may prioritize different types of road markings. For example, a user may set a high display priority for pedestrian crossings and stop lines. In accordance with such settings, the display control unit 102 will not display any types of road markings other than pedestrian crossings and stop lines.

[0061] The display priority may be determined based on road-related parameters corresponding to the road surface. These road-related parameters indicate characteristics of the road's traffic conditions. The management support system 100 may further include a determination unit that determines the display priority based on the road-related parameters. The road-related parameters are stored in an arbitrary database in association with the road's location.

[0062] Road-related parameters include, for example, traffic accident information, traffic violation information, hazard level, nearby facility information, traffic volume, and pedestrian volume at the location where the road surface image was taken. Display priority may be determined based on multiple road-related parameters.

[0063] Traffic accident information and traffic violation information indicate whether or not a traffic accident or violation has occurred, or the number of occurrences. Roads with a high incidence of traffic accidents and violations may be given higher priority for displaying types of road markings designed to prevent accidents. Examples of road markings designed to prevent accidents include stop lines, "STOP" signs, and speed limit indicators.

[0064] The degree of danger represents the degree of danger based on the shape of the road. For example, the degree of danger may represent the poor visibility of the road or whether or not the road is curved. Among the road markings painted on roads with a high degree of danger, the priority of displaying road markings that warn drivers may be determined to be high. Road markings that warn drivers include words such as "Slow Down." Also, on roads with heavy traffic, the priority of displaying lane markings may be determined to be high.

[0065] Nearby facility information indicates whether or not there are facilities requiring attention, such as schools, near the road. For example, on roads with schools nearby or roads with many pedestrians, the priority of displaying pedestrian crossings and warning signs on those roads may be set higher.

[0066] The above describes the various ways in which icons can be displayed by the display control unit 102. The display control unit 102 may also display various other types of information on the screen. Specific examples of information that may be displayed are shown below.

[0067] Figure 8 shows another example of a screen displayed on the display. The display control unit 102 may display the road surface image 34 together with the map 31. The display control unit 102 may also display the road surface image 34 of the location corresponding to the selected icon, depending on the icon selected by the user.

[0068] The display control unit 102 may also display additional information 35 regarding the location where the road surface image was taken. The additional information 35 may include, for example, the type of road markings at the location where the road surface image was taken, and the degree of wear of the road markings. The additional information 35 may also include the road-related parameters mentioned above. The display control unit 102 may also display additional information 35 for the location corresponding to the selected icon, depending on the icon selected by the user.

[0069] The display control unit 102 may display different additional information 35 depending on the type of road marking. For example, if there is a pedestrian crossing at the location where the road image was taken, the pedestrian traffic volume may be displayed, but if there is no pedestrian crossing, the pedestrian traffic volume may not be displayed.

[0070] Furthermore, the display control unit 102 may display the repair priority. The repair priority indicates the priority for repainting the road markings. The user can plan the repainting of the road markings based on the repair priority. The repair priority may be determined based on the degree of wear of the road markings and the display priority for each type of road marking mentioned above. The management support system 100 may include a determination unit for determining the repair priority. The repair priority may be included in an example of the additional information 35.

[0071] The display control unit 102 may display a list of road markings in order of highest repair priority. The display control unit 102 may accept a selection of a road marking from the list. Then, according to the selection, the display control unit 102 may display a map 31 showing the location of the selected road marking.

[0072] The display control unit 102 may designate a portion of the map 31 as a highlighted area 36 and display it in a different manner from other areas. A different manner includes, for example, displaying it in a different color. The highlighted area 36 may indicate, for example, an area with a higher degree of wear than other areas.

[0073] In Figure 8, the emphasis area 36 is shown as a circle. However, the display of the emphasis area 36 is not limited to a circle; a rectangle or other shape may be used. Furthermore, the emphasis area 36 may display the road to be emphasized in a different color from other roads.

[0074] The display control unit 102 may, for example, display the highlighted area 36 in red and the other areas in blue. By displaying the highlighted area 36, ​​the user can prioritize checking the degree of wear for each type of road marking within the highlighted area 36.

[0075] [Hardware configuration] In the embodiments described above, each component of the management support system 100 represents a functional unit block. Some or all of each component may be implemented by any combination of computer 500 and program.

[0076] Figure 9 is a block diagram showing an example of the hardware configuration of computer 500. Referring to Figure 9, computer 500 includes, for example, a CPU (Central Processing Unit) 501, ROM (Read Only Memory) 502, RAM (Random Access Memory) 503, a program 504, a storage device 505, a drive device 507, a communication interface 508, an input device 509, an input / output interface 511, and a bus 512.

[0077] Program 504 includes instructions for implementing each function of the management support system 100. Program 504 is pre-stored in ROM 502, RAM 503, and storage device 505. The CPU 501 implements each function of the management support system 100 by executing the instructions contained in Program 504. For example, the CPU 501 of the management support system 100 implements the functions of the management support system 100 by executing the instructions contained in Program 504. In addition, RAM 503 may store data processed in each function of the management support system 100. For example, road surface images may be stored in the RAM 503 of computer 500.

[0078] The drive device 507 reads and writes to the recording medium 506. The communication interface 508 provides an interface with the communication network. The input device 509 is, for example, a mouse or keyboard, and accepts information input from the user. The output device 510 is, for example, a display, and outputs (displays) information to the user. The input / output interface 511 provides an interface with peripheral devices. The bus 512 connects each of these hardware components. The program 504 may be supplied to the CPU 501 via the communication network, or it may be stored in the recording medium 506 beforehand, read by the drive device 507, and supplied to the CPU 501.

[0079] Note that the hardware configuration shown in Figure 9 is an example, and other components may be added, or some components may be omitted.

[0080] There are various variations in how the management support system 100 can be implemented. For example, the management support system 100 may be implemented by any combination of different computers and programs for each component. Alternatively, the multiple components of the management support system 100 may be implemented by any combination of a single computer and program.

[0081] Furthermore, some or all of the components of the management support system 100 may be implemented by general-purpose or dedicated circuits, including processors, or by combinations thereof. These circuits may consist of a single chip or multiple chips connected via a bus. Some or all of the components of the management support system 100 may be implemented by a combination of the aforementioned circuits and programs.

[0082] Furthermore, if some or all of the components of the management support system 100 are implemented by multiple computers, circuits, etc., these multiple computers, circuits, etc. may be centrally located or distributed.

[0083] Furthermore, at least a portion of the management support system 100 may be provided in SaaS (Software as a Service) format. That is, at least a portion of the functions necessary to realize the management support system 100 may be executed by software that runs over a network.

[0084] Although the present disclosure has been described above with reference to embodiments, the present disclosure is not limited to the embodiments described above. Various modifications to the configuration and details of the present disclosure are possible, as can be understood by those skilled in the art within the scope of the present disclosure. Furthermore, the configurations in each embodiment can be combined with one another, as long as they do not depart from the scope of the present disclosure.

[0085] Some or all of the above embodiments may be described as follows, but are not limited to the following:

[0086] [Note 1] A determination means for determining the type of road marking and the degree of wear of the road marking from a road surface image captured from the road surface, A display control means that, based on the location information of the point where the road surface image was taken, displays the degree of wear of each road surface marking on a single map using different types of icons for each type of road surface marking, A management support system equipped with these features.

[0087] [Note 2] The display control means displays the type of road marking using one attribute of an icon, and the degree of wear using another attribute different from the aforementioned attribute. The management support system described in Appendix 1.

[0088] [Note 3] The attributes of the aforementioned icon are one of the following: color, pattern, size, or shape. The management support system described in Appendix 2.

[0089] [Note 4] The display control means displays the degree of wear of the road markings representing each pedestrian crossing surrounding the intersection, in each of the regions into which a single icon is divided, using the other attribute. The management support system described in Appendix 2 or 3.

[0090] [Note 5] The display control means switches between display modes in which the degree of wear of the road markings representing each pedestrian crossing surrounding the intersection is represented by separate icons, and display modes in which the degree of wear is represented by each of the regions into which a single icon is divided. The management support system described in Appendix 4.

[0091] [Note 6] The display control means switches between two display modes, depending on the map scale: one in which the degree of wear of the road markings representing each pedestrian crossing surrounding the intersection is represented by separate icons, and another in which the degree of wear is represented by each of the divided regions of a single icon. The management support system described in Appendix 5.

[0092] [Note 7] The display control means limits the number of icons displayed when a predetermined number or more road markings are included in a single map. A management support system as described in any one of the appendices 1 to 6.

[0093] [Note 8] The display control means, when a portion of a map contains more than a predetermined number of road markings, limits the number of icons displayed within that portion of the map. A management support system as described in any one of the appendices 1 to 7.

[0094] [Note 9] The display control means causes road markings of the same type within a predetermined distance to be displayed by a single icon. A management support system as described in any one of the appendices 1 through 8.

[0095] [Note 10] The display control means displays the icons based on the display priority determined for each type of road marking. A management support system as described in any one of the appendices 1 through 9.

[0096] [Note 11] The display priority is determined based on parameters relating to the road corresponding to the road surface. The management support system described in Appendix 10.

[0097] [Note 12] The parameters relating to the road are at least one of the following: traffic accident information, traffic violation information, risk level, nearby facility information, traffic volume, and pedestrian volume at the location where the road surface image was taken. The management support system described in Appendix 11.

[0098] [Note 13] The display control means displays the repair priority for the road markings, which is determined based on the degree of wear and the display priority for each type of road marking. A management support system as described in any one of the appendices 10 to 12.

[0099] [Note 14] The display control means displays additional information regarding the location where the road surface image was taken, in response to the user selecting the icon. A management support system as described in any one of the appendices 1 to 13.

[0100] [Note 15] The display control means causes the additional information, which differs for each type of road marking, to be displayed. The management support system described in Appendix 14.

[0101] [Note 16] From the road surface image captured from the road surface, the type of road marking and the degree of wear of the road marking are determined. Based on the location information of the point where the road surface image was taken, the degree of wear of each type of road marking is displayed on a single map using different types of icons for each type of road marking. Management support methods.

[0102] [Note 17] From the road surface image captured from the road surface, the type of road marking and the degree of wear of the road marking are determined. Based on the location information of the point where the road surface image was taken, the degree of wear of each type of road marking is displayed on a single map using different types of icons for each type of road marking. A recording medium that temporarily stores programs that cause a computer to execute a process. [Explanation of Symbols]

[0103] 100 Management Support Systems 101 Judgment section 102 Display Control Unit 31 Map 32, 33 Legend 34 Road surface images 35 Additional Information 36 Emphasis area

Claims

1. A determination means for determining the type of road marking and the degree of wear of the road marking from a road surface image captured from the road surface, A display control means that, based on the determined type and degree of wear of the road markings and the location information of the point where the road surface image was taken, displays the degree of wear of each road marking on a single map using different types of icons for each type of road marking. Equipped with, The display control means is One attribute of the icon represents the type of road marking, and another attribute, different from the aforementioned attribute, represents and displays the degree of wear. The degree of wear of the road markings representing each pedestrian crossing surrounding the intersection is represented and displayed in each of the regions into which a single icon is divided, according to the aforementioned different attributes. Management support system.

2. The attributes of the aforementioned icon are one of the following: color, pattern, size, or shape. The management support system according to claim 1.

3. The display control means switches between display modes in which the degree of wear of the road markings representing each pedestrian crossing surrounding the intersection is represented by separate icons, and display modes in which the degree of wear is represented by each of the regions into which a single icon is divided. The management support system according to claim 1 or 2.

4. The display control means switches between two display modes depending on the map scale: one in which the degree of wear of the road markings representing each pedestrian crossing surrounding the intersection is represented by separate icons, and another in which the degree of wear is represented by each of the regions into which a single icon is divided. The management support system according to claim 3.

5. The display control means causes identical road markings within a predetermined distance to be displayed by a single icon. The management support system according to any one of claims 1 to 4.

6. The display control means displays the icons based on the display priority determined for each type of road marking. The management support system according to any one of claims 1 to 5.

7. From the road surface image captured from the road surface, the type of road marking and the degree of wear of the road marking are determined. Based on the determined type and degree of wear of the road markings, and the location information of the point where the road surface image was taken, the degree of wear of each road marking is displayed on a single map using different types of icons for each type of road marking. In the display on the aforementioned map, One attribute of the icon represents the type of road marking, and another attribute, different from the aforementioned attribute, represents and displays the degree of wear. The degree of wear of the road markings representing each pedestrian crossing surrounding the intersection is represented and displayed in each of the regions into which a single icon is divided, according to the aforementioned different attributes. Management support methods.

8. From the road surface image captured from the road surface, the type of road marking and the degree of wear of the road marking are determined. Based on the determined type and degree of wear of the road markings, and the location information of the point where the road surface image was taken, the degree of wear of each road marking is displayed on a single map using different types of icons for each type of road marking. In the display on the aforementioned map, One attribute of the icon represents the type of road marking, and another attribute, different from the aforementioned attribute, represents and displays the degree of wear. The degree of wear of the road markings representing each pedestrian crossing surrounding the intersection is represented and displayed in each of the regions into which a single icon is divided, according to the aforementioned different attributes. A program that instructs a computer to perform a process.

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