WO2023100309A1 - 状態判定装置、状況判定方法、及び、記録媒体 - Google Patents
状態判定装置、状況判定方法、及び、記録媒体 Download PDFInfo
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- sensor information
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- 238000012545 processing Methods 0.000 claims abstract description 81
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- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000004441 surface measurement Methods 0.000 claims abstract description 9
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/3453—Special cost functions, i.e. other than distance or default speed limit of road segments
- G01C21/3461—Preferred or disfavoured areas, e.g. dangerous zones, toll or emission zones, intersections, manoeuvre types, segments such as motorways, toll roads, ferries
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/38—Electronic maps specially adapted for navigation; Updating thereof
- G01C21/3804—Creation or updating of map data
- G01C21/3807—Creation or updating of map data characterised by the type of data
- G01C21/3815—Road data
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
- G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
- G01S13/9004—SAR image acquisition techniques
- G01S13/9011—SAR image acquisition techniques with frequency domain processing of the SAR signals in azimuth
Definitions
- the present disclosure relates to a state determination device, a situation determination method, and a recording medium.
- SAR synthetic aperture radar
- Patent Literature 2 describes an in-vehicle system that performs image recognition processing on an image captured by a camera or the like installed in the vehicle to detect an abnormal road condition such as a collapse of the road or the occurrence of another disaster.
- An apparatus is disclosed.
- determination using SAR cannot determine detailed conditions such as the road surface.
- determination using a drive recorder can grasp the detailed state of structures such as road surfaces, but analysis using a drive recorder requires a large amount of data processing.
- the investigation range includes an area that should be investigated in detail and an area that may be investigated roughly to some extent. However, it is not possible to grasp the areas to be investigated in detail in advance by the investigation using the drive recorder.
- An example of the purpose of the present disclosure is to provide a state determination device or the like that enables appropriate state determination of structures while reducing the amount of data processing.
- a state determination device includes a ground surface information acquisition unit that acquires ground surface displacement using a measurement image acquired from a ground surface measurement device, and a process that acquires sensor information from the sensor information acquisition device based on the ground surface displacement.
- Area setting means for setting the processing amount of sensor information used in each predetermined area, sensor information processing means for processing sensor information based on the processing amount of sensor information corresponding to the set area, and processed It comprises state determination means for determining the state of the structure using sensor information, and output means for outputting the determined state of the structure.
- a situation determination method acquires ground surface displacement using a measurement image acquired from a ground surface measurement device, and acquires sensor information from a sensor information acquisition device based on the ground surface displacement.
- the processing amount is set for each predetermined area, the sensor information is processed based on the processing amount of the sensor information corresponding to the set area, and the state of the structure is determined using the processed sensor information. output the state of the structure.
- a recording medium acquires ground surface displacement using a measurement image acquired from a ground surface measurement device, and processes sensor information used in processing for acquiring sensor information from a sensor information acquisition device based on the ground surface displacement.
- the amount is set for each predetermined area, the sensor information is processed based on the amount of processing of the sensor information corresponding to the set area, and the state of the structure is determined using the processed sensor information.
- One example of the effect of the present disclosure is that it is possible to appropriately determine the state of structures while reducing the amount of data processing.
- FIG. 1 is a block diagram illustrating an example of a configuration of a state determination device according to a first embodiment
- FIG. FIG. 2 is a conceptual diagram illustrating an example of the configuration of the state determination device and its peripherals according to the first embodiment
- 3 is a diagram for explaining an example of acquisition of sensor information by a sensor information processing unit according to the first embodiment
- FIG. 4 is a diagram illustrating an example of output from an output unit according to the first embodiment
- FIG. 5 is a diagram illustrating another example of output of the output unit according to the first embodiment
- FIG. 6 is a diagram illustrating another example of output of the output unit according to the first embodiment
- FIG. 7 is a flowchart illustrating an example of the operation of the state determination device according to the first embodiment
- FIG. 8 is a block diagram illustrating an example of a hardware configuration of the state determination device according to the first embodiment
- FIG. FIG. 9 is a block diagram illustrating an example of a configuration of a state determination device according to a second embodiment
- FIG. 10 is a diagram illustrating an example of route information according to the second embodiment
- FIG. 11 is a flowchart illustrating an example of the operation of the state determination device according to the second embodiment
- FIG. 1 is a block diagram showing an example of the configuration of a state determination device 10 according to the first embodiment.
- the state determination device 10 includes a ground surface information acquisition unit 101 , an area setting unit 102 , a sensor information processing unit 103 , a state determination unit 104 and an output unit 105 .
- Each component may store at least part of the information specified by each component, the acquired information, and the determined information in a storage unit (not shown). In this case, each component may acquire necessary information from the storage unit.
- the state determination device 10 is a device for determining a state such as deterioration of a structure based on sensor information acquired from a sensor information acquisition device. Examples of structures include civil engineering structures such as roads, bridges, ramps, embankments, piers, revetments, and runways.
- FIG. 2 is a conceptual diagram showing an example of the configuration of the state determination device 10 and its surroundings according to the first embodiment.
- the state determination device 10 includes a computer 510, a drive recorder 520 and an SAR 530 as an example of a sensor information acquisition device, a terminal device 540 as an example of a display device, and a vehicle 550 as an example of a moving object.
- a network 580 is a communication path that interconnects devices and systems.
- the state determination device 10 (computer 510) and the drive recorder 520 may be directly connected, or may be connected via a cloud or the like.
- the terminal device 540 displays information about the state of the structure output by the state determination device 10.
- the terminal device 540 may be any device as long as it can display information about the state of the structure.
- the terminal device 540 may be a terminal device of a road administrator such as a local government.
- the number of configurations included in FIG. 2 is an example.
- the drive recorder 520 may be singular or plural. Alternatively, at least some drive recorders 520 may not be mounted on vehicle 550 . Note that FIG. 2 displays the drive recorder 520 outside the vehicle 550 for easy understanding. However, drive recorder 520 may be mounted inside vehicle 550 .
- the ground surface information acquisition unit 101 acquires the ground surface displacement using the measurement image acquired from the ground surface measurement device. Specifically, the ground surface information acquisition unit 101 acquires the SAR image from the SAR 530, analyzes the acquired SAR image, and acquires the ground surface displacement. Alternatively, the ground surface information acquisition unit 101 may directly acquire ground surface displacement from the SAR 530 . The ground surface information acquisition unit 101 may acquire, as the ground surface displacement, the maximum value or the average value of the ground surface displacement in units of grids divided into sections by drawing grid lines at regular intervals on the map. Alternatively, the ground surface information acquisition unit 101 may acquire the ground surface displacement only for the road surface area on the map.
- the ground surface information acquisition unit 101 may acquire observation results using multispectrum from the SAR 530 .
- the ground surface information acquiring unit 101 may analyze the ground surface type in addition to the ground surface displacement using the acquired observation results.
- the ground surface information acquisition unit 101 outputs the acquired ground surface displacement to the area setting unit 102 .
- the ground surface information acquisition unit 101 may acquire ground surface displacement using SAR images stored in a cloud system configured using cloud computing to which the drive recorder 520 is connected.
- the area setting unit 102 Based on the ground surface displacement acquired by the ground surface information acquisition unit 101, the area setting unit 102 sets the processing amount of sensor information used in the process of acquiring sensor information from the sensor information acquisition device for each predetermined area.
- the predetermined area is an area specified according to the magnitude of ground surface displacement.
- the region setting unit 102 identifies regions where the ground surface displacement is large, for example, based on the ground surface displacement acquired by the ground surface information acquisition unit 101 .
- the region setting unit 102 identifies, for example, a region in which the ground surface displacement such as ground subsidence is larger than a predetermined threshold in the region from which the SAR image has been acquired.
- the area setting unit 102 may specify an area where the displacement of the ground surface is larger than the threshold and a predetermined range around it (for example, a range of several tens of meters around).
- the magnitude of the ground surface displacement is expressed by, for example, the ground surface displacement velocity or the cumulative amount of ground surface displacement.
- Ground displacement velocity is the degree of change in ground displacement (subsidence or uplift) over time (eg, mm/year).
- the area setting unit 102 may identify an area where the ground surface displacement is abruptly displaced and the ground surface displacement is moving non-linearly, even if it is not an area where the ground surface displacement is greater than the threshold.
- the area setting unit 102 sets the processing amount of sensor information used in the process of acquiring sensor information from the sensor information acquisition device for the specified area and other areas.
- the region setting unit 102 may specify a plurality of regions instead of one.
- the area setting unit 102 may specify several types of areas according to the magnitude of the ground surface displacement.
- the region setting unit 102 sets the processing amount of sensor information according to the magnitude of the ground surface displacement.
- the area setting unit 102 sets the amount of sensor information to be processed such that the amount of sensor information to be processed increases in areas where the magnitude of ground surface displacement is large.
- the region setting unit 102 outputs to the sensor information processing unit 103 together with the processing amount of the sensor information that sets the specified region.
- the processing amount of sensor information is the processing amount of sensor information used in the process of acquiring sensor information from the sensor information acquisition device.
- the process of acquiring sensor information includes the process of acquiring sensor information from the sensor information acquisition device (simply referred to as “acquisition processing”), and the process of uploading the sensor information acquired from the sensor information acquisition device to the state determination device (simply (also referred to as “upload processing”) or structure state determination processing by the state determination unit 104 (simply referred to as “state determination processing”).
- the amount of processing of sensor information used in the process of acquiring these sensor information can be set by, for example, the frequency of processing sensor information or the amount of processing per unit time (for example, bit rate) of sensor information used in one process.
- the processing amount of the sensor information in the acquisition process is the resolution of the image acquired from the drive recorder 520, and the image taken per distance traveled by the drive recorder 520. It is defined by the number of times or by the traveling interval of the moving body on which the drive recorder 520 is mounted.
- the area setting unit 102 can set, for each area, a resolution such as 1920 ⁇ 1080, 1024 ⁇ 768, or 720 ⁇ 480 as the resolution of the image acquired from the drive recorder 520 .
- the area setting unit 102 sets the travel interval to be increased in the season when the ground surface displacement is large, for example, when the snow melts in early spring. Further, when the sensor information is a moving image, the area setting unit 102 can set the frame rate of the moving image to be acquired for each area as the processing amount of the sensor information in the acquisition process.
- the processing amount of sensor information in the state determination process is defined, for example, by the frequency of using the sensor information uploaded to the state determination device 10 for state determination.
- the area setting unit 102 uses all images uploaded to the state determination device 10 for state determination, and selects a part of the uploaded images (for example, 1 out of 10 images). is used for state determination, or an image in a predetermined section is not used for state determination.
- the frequency of use for determining the state of an image it is possible to set such that one image is used every day, one image is used per week, one image is used per month, or not used for a predetermined period.
- the area setting unit 102 sets the frame rate of the moving image used by the state determination unit 104 to determine the state of the structure for each area as the processing amount of the sensor information in the state determination process. can be done.
- the area setting unit 102 may set a fixed value for the processing amount of sensor information set for each predetermined area, and accepts a value set by the user from an input device (not shown). may Further, the processing amount of sensor information uploaded to the state determination device 10 by the drive recorder 520 and the processing amount of sensor information in the acquisition process may differ.
- FIG. 3 is a diagram for explaining an example of acquisition of processing for acquiring sensor information from a sensor information acquisition device by the sensor information processing unit 103 according to the first embodiment.
- the lines are roads.
- An ellipse is an area set by the area setting unit 102 where the displacement of the ground surface is large.
- the region setting unit 102 sets the processing amount of sensor information for the elliptical region and other regions.
- the area setting unit 102 sets, for example, the frame rate (processing amount) of sensor information acquired by the sensor information acquisition device installed in the drive recorder 520 .
- the area setting unit 102 increases the frame rate of the sensor information (for example, 30 fps) when traveling on a road that includes the range of the elliptical portion.
- the frame rate of the sensor information is reduced (for example, 1 fps).
- the sensor information processing unit 103 can set the acquisition frequency of sensor information, for example, within a range of 0 (no sensor information is acquired) to 60 fps. Further, the sensor information processing unit 103 can similarly set the frame rate in upload processing of sensor information or state determination processing.
- the state determination unit 104 uses the sensor information input by the sensor information processing unit 103 to determine the state of the structure.
- the state determination unit 104 determines the deterioration state of a structure by using, for example, a model that is trained using an image of the structure as sensor information or sensor information such as acceleration as teacher data. In this embodiment, a method for determining the state of road deterioration as a structure will be described.
- Road deterioration is deterioration that occurs on paved roads due to factors such as vehicle driving and rainfall.
- Road deterioration is classified into several types including, for example, cracks, potholes, rutting, and road unevenness.
- Cracks may be classified into different types, linear cracks and tortoiseshell cracks, depending on their shape.
- a straight crack is a single linear crack.
- a tortoiseshell crack is a tortoiseshell-shaped crack that occurs, for example, when vertical and horizontal straight cracks are connected.
- Road cracks generally tend to progress into straight cracks, tortoiseshell cracks and potholes.
- the degree of road deterioration is represented by the degree of deterioration.
- the degree of deterioration may be any index including degree of cracking, number of potholes, size of potholes, amount of rutting, or flatness.
- the degree of deterioration may be determined based on a combination of a plurality of indicators representing the degree of road deterioration.
- the degree of cracking is represented by the shape, length, area, number of cracks, or a combination thereof.
- Crack rate is an example of crack degree.
- the crack ratio is represented by, for example, 100 ⁇ (crack area/road section area). In this case, the value of the degree of deterioration ranges from 0% to 100%.
- the crack area is calculated by any method. Note that the method for calculating the crack rate is not particularly limited, and other known calculation methods can be applied.
- the size of a pothole is represented by, for example, the area, width, length, or depth of the pothole, or a combination of these.
- the amount of rutting is the depth of the rut where the running track of the vehicle is lower than other road surfaces due to the load of the vehicle and the friction with the tires.
- the degree of cracking, the number and size of potholes, and the amount of rutting may be calculated based on measurement data obtained by measuring the road surface with a sensor. Alternatively, these indexes may be calculated based on the recognition result of recognizing road deterioration from an image of the road.
- the IRI is an index that associates the road surface with the ride comfort of the driver, and expresses the degree of unevenness as a numerical value.
- the IRI may be calculated based on measurement data obtained by measuring the road surface with a sensor.
- the IRI may be calculated based on the value of an acceleration sensor attached to the vehicle while the vehicle is running.
- the IRI is calculated based on the vertical acceleration value included in the acceleration acquired at the detection position. Note that the method for calculating the IRI is not limited to the above, and a known calculation method can be employed.
- the degree of deterioration is not limited to the indexes described above, and any index representing road deterioration including, for example, MCI (Maintenance Control Index) may be used.
- MCI Maintenance Control Index
- the value of MCI is the minimum result of calculating four defining equations using crack rate, rut depth, and flatness. MCI decreases as the road deteriorates.
- the output unit 105 outputs the state of the structure determined by the state determination unit 104 to a predetermined notification destination. For example, when the state determination unit 104 determines the deterioration state of the road, the output unit 105 notifies a predetermined notification destination of information indicating the position and degree of deterioration of the road determined by the state determination unit 104 .
- the output unit 105 may select a notification destination.
- the output unit 105 may output to the terminal device 540 of a road administrator such as a local government, for example.
- FIG. 4 is a diagram illustrating an example of output from an output unit according to the first embodiment; FIG. As shown in FIG. 4, the output unit 105 may display and acquire an index representing the degree of road deterioration together with the road image of the point specified by the user.
- FIG. 4 shows an image of a road on which a car is running, which is taken, for example, by a camera mounted in front of a vehicle running in the left lane.
- the road in FIG. 4 has a crack on the left edge of the road, and the crack is surrounded by dotted lines of different thicknesses depending on the size of the crack.
- FIG. 4 shows an image of a road on which a car is running, which is taken, for example, by a camera mounted in front of a vehicle running in the left lane.
- the road in FIG. 4 has a crack on the left edge of the road, and the crack is surrounded by dotted lines of different thicknesses depending on the size of the crack.
- FIG. 4 shows an example of output from an output unit
- an index representing the degree of road deterioration to be displayed can be selected, and in the example of FIG. 4, only the crack rate is displayed.
- the crack rate increases as the degree of deterioration worsens. It should be noted that the method of representing the degree of deterioration is not limited to this, and for example, the value of the degree of deterioration may be made smaller when the deterioration has occurred.
- FIG. 5 is a diagram showing another example of output from the output section according to the first embodiment.
- the crack rate is indicated by an arrow with three levels of gradation for each unit that divides the road surface into predetermined sections. The darker the gradation, the higher the crack rate.
- the crack ratio for each unit may be the average value of crack ratios calculated at a plurality of locations in the unit, the maximum value, or a value calculated by other statistical processing.
- the directions of the arrows are different according to the downward direction and the upward direction.
- the output unit 105 displays the crack width in shades of an inverted triangle, which is a predetermined symbol.
- the crack width is classified into three stages of less than 5 mm, 5 to less than 10 mm, and 10 mm or more, and the darker the shade, the larger the crack width.
- the output unit 105 may display a predetermined symbol of an inverted triangle at each position where the crack is detected.
- FIG. 6 is a diagram showing another example of output by the output unit according to the first embodiment.
- the output unit 105 may display the position and degree of deterioration (for example, crack rate) of the road determined by the state determination unit 104 on a road map.
- degree of deterioration is indicated by symbols in three stages of "large”, “medium” and "small”.
- FIG. 7 is a flow chart showing an example of the operation of the state determination device 10 according to the first embodiment.
- the ground surface information acquisition unit 101 acquires ground surface displacement in the specified area (step S101).
- the area setting unit 102 sets, for each predetermined area, the processing amount of sensor information used in the process of acquiring sensor information from the sensor information acquisition device, based on the displacement of the ground surface (step S102).
- the sensor information processing unit 103 processes the data amount of sensor information based on the processing amount of sensor information corresponding to the area set by the area setting unit 102 (step S103).
- the state determination unit 104 uses the sensor information to determine the state of the structure (step S104).
- the output unit 105 outputs the state of the structure determined by the state determination unit 104 (step S105).
- the sensor information processing section 103 processes the data amount of sensor information based on the processing amount of sensor information corresponding to the area set by the area setting section 102 .
- the state determination device 10 increases the data amount of sensor information used for structure state determination in areas where ground surface displacement is large, and reduces the data amount of sensor information used for structure state determination in areas where ground surface displacement is small. It becomes possible to Therefore, according to the state determination device 10, it is possible to appropriately determine the state of the structure while reducing the processing amount of sensor information.
- the state determination device 10 also outputs the state of the structure determined by the state determination unit 104 . This makes it possible to provide users, etc. with detailed information on structures in areas where ground surface displacement is large while reducing the amount of sensor information to be processed.
- Each component of the state determination device 10 may be configured by a hardware circuit.
- each component may be configured using a plurality of devices connected via a network.
- the state determination device 10 may be configured using cloud computing.
- the plurality of components may be configured by one piece of hardware.
- state determination device 10 may be implemented as a computer device including a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory).
- the state determination device 10 may be implemented as a computer device that further includes a network interface circuit (NIC: Network Interface Circuit).
- NIC Network Interface Circuit
- the CPU 610 may use the RAM 630 or storage device 640 as a temporary storage medium for programs and data when implementing each function.
- CPU 610 may read a program included in recording medium 690 storing the computer-readable program using a recording medium reading device (not shown).
- CPU 610 may receive a program from an external device (not shown) via NIC 650, store the program in RAM 630 or storage device 640, and operate based on the stored program.
- the ROM 620 stores programs executed by the CPU 610 and fixed data.
- the ROM 620 is, for example, a P-ROM (Programmable-ROM) or a flash ROM.
- RAM 630 temporarily stores programs and data executed by CPU 610 .
- the RAM 630 is, for example, a D-RAM (Dynamic-RAM).
- the storage device 640 stores data and programs that the state determination device 10 saves for a long time. Storage device 640 may also operate as a temporary storage device for CPU 610 .
- the storage device 640 is, for example, a hard disk device, a magneto-optical disk device, an SSD (Solid State Drive), or a disk array device.
- the ROM 620 and storage device 640 are non-transitory recording media.
- the RAM 630 is a volatile (transitory) recording medium.
- the CPU 610 can operate based on programs stored in the ROM 620 , the storage device 640 , or the RAM 630 . That is, the CPU 610 can operate using a non-volatile recording medium or a volatile recording medium.
- the NIC 650 relays data exchange with external devices (driving recorder 520, SAR 530, terminal device 540, etc.) via the network.
- the NIC 650 is, for example, a LAN (Local Area Network) card.
- the NIC 650 is not limited to wired, and may be wireless.
- the state determination device 10 configured in this way can obtain the same effect as the state determination device 10 of FIG. The reason is that the CPU 610 of the state determination device 10 can implement the same functions as the state determination device 10 of FIG. 1 based on the program.
- FIG. 9 is a block diagram showing an example of the configuration of the state determination device 11 according to the second embodiment.
- the state determination device 11 includes a ground surface information acquisition unit 111 , an area setting unit 112 , a sensor information processing unit 113 , a state determination unit 114 , a route calculation unit 115 and an output unit 116 .
- the second embodiment differs from the first embodiment in that a path calculation unit 115 is provided. Configurations other than the path calculation unit 115 and the output unit 116 are the same as the configurations corresponding to those in the first embodiment, so description thereof is omitted.
- the route calculation unit 115 calculates a route that travels through a region in which the processing amount of sensor information is set higher than the threshold value by the region setting unit 112 .
- the area where the processing amount of sensor information is set higher than the threshold is an area where the displacement of the ground surface is larger than the predetermined threshold.
- the route calculation unit 115 includes the set area in the route and searches for a route from the specified departure point to the destination. Running in the set area means, for example, running in or around the set area.
- the sensor information processing unit 230 acquires sensor information on the route with the amount of processing set by the region setting unit 112 .
- the route calculation unit 250 acquires, for example, an image of a road as sensor information from the drive recorder 520 .
- the route calculation unit 250 may acquire the sensor information from the drive recorder 520 or may acquire the sensor information from a device that stores the sensor information acquired by the drive recorder 520 .
- the starting point and destination of the route are not particularly limited.
- the route calculation unit 115 may acquire at least one of a route search road, a departure point, a transit point, and a destination from a user or the like. In this case, the state of the structure in the set area can be determined while the moving object travels along the route specified by the user.
- the output unit 116 outputs the route information calculated by the route calculation unit 115 in addition to the state of the structure determined by the state determination unit 114 to a predetermined notification destination.
- These notification destination devices may be arbitrary devices as long as they are devices mounted on a moving object.
- FIG. 10 is a diagram showing an example of route information according to the second embodiment.
- RouteA and RouteB which run in a set area and run from a specified departure point to a destination. If sensor information within the set area has not been acquired, both RouteA and RouteB may be presented. Also, if the sensor information on one of the route information (for example, route RouteA) has already been acquired, only the other route information (route RouteB) may be displayed. In this case, it is possible to efficiently acquire sensor information at different points within an area where ground surface displacement is large.
- route information may include structures other than roads.
- route information includes information related to whether or not people can pass through stairs, pedestrian bridges, sidewalks on top of embankments or at the top of embankments, roads in parks, boardwalks, farm roads, or piers. may contain.
- the route information may be generated using information related to multiple structures.
- FIG. 11 is a flowchart showing an example of the operation of the state determination device 11 according to the second embodiment. Steps S201 to S204 in the present embodiment are the same as steps S101 to S104 in the first embodiment, so description thereof will be omitted.
- the route calculation unit 115 calculates a route that travels through a region in which the processing amount of sensor information is set to be higher than the threshold value by the region setting unit 112 (step S205).
- the output unit 116 outputs the route information calculated by the route calculation unit 115 in addition to the state of the structure determined by the state determination unit 114 (step S206).
- the route calculation unit 115 calculates a route for traveling in a region in which the processing amount of sensor information is set higher than the threshold value by the region setting unit 112 .
- the moving body travels along the calculated route, thereby preferentially acquiring sensor information in areas where ground surface displacement is large. Therefore, it is possible to quickly determine the state of the area where there is a possibility of deterioration of the structure.
- the output unit 116 outputs the determination result of the state of the structure, it is possible to output the route information for acquiring the sensor information of the structure for determining the state next. is. Therefore, it is possible to efficiently determine the state of the structure.
- ground surface information acquiring means for acquiring ground surface displacement using the measurement image acquired from the ground surface measuring device; area setting means for setting, for each predetermined area, a processing amount of sensor information used in a process of acquiring sensor information from a sensor information acquisition device based on the ground surface displacement; sensor information processing means for processing the sensor information based on the processing amount of the sensor information corresponding to the set area; a state determination means for determining a state of a structure using the processed sensor information; output means for outputting the determined state of the structure;
- a state determination device comprising:
- the process of acquiring the sensor information includes a process of acquiring sensor information from the sensor information acquisition device, a process of uploading the sensor information acquired from the sensor information acquisition device to the state determination device, or a process of uploading the sensor information acquired from the sensor information acquisition device to the state determination device.
- Appendix 3 The state determination device according to appendix 1 or appendix 2, wherein the region setting means sets a frequency of processing the sensor information for each region.
- the sensor information is a moving image; 4.
- the state determination device according to any one of attachments 1 to 3, wherein the area setting means sets a frame rate of the moving image for each area.
- Appendix 6 the structure is a road, The state determination device according to appendix 5, wherein the moving body is a vehicle traveling on a road.
- the sensor information processing means acquires a captured image of the structure as the sensor information, 7.
- the state determination device according to any one of Appendices 1 to 6, wherein the output means displays information indicating the state of the structure on the captured image.
- Appendix 8 The state determination device according to any one of appendices 1 to 6, wherein the output means displays information indicating the degree of deterioration of the structure on a map.
- the output means displays, as information indicating the degree of deterioration of the structure, an index representing the degree of road deterioration of at least one of road cracks, potholes, rutting, and flatness abnormalities.
- the state determination device according to appendix 8.
- Appendix 10 further comprising route calculation means for calculating a route traveling in an area in which the processing amount of the sensor information is set higher than a predetermined threshold value by the area setting means;
- the state determination device according to any one of Appendices 1 to 9, wherein the output means outputs calculated route information in addition to the determined state of the structure.
- (Appendix 11) Acquire the ground surface displacement using the measurement image acquired from the ground surface measurement device, Based on the ground surface displacement, setting the processing amount of sensor information used in the process of acquiring sensor information from the sensor information acquisition device for each predetermined area, processing the sensor information based on the processing amount of the sensor information corresponding to the set area; determining a state of a structure using the processed sensor information; A situation determination method for outputting the determined state of the structure.
- (Appendix 12) Acquire the ground surface displacement using the measurement image acquired from the ground surface measurement device, Based on the ground surface displacement, setting the processing amount of sensor information used in the process of acquiring sensor information from the sensor information acquisition device for each predetermined area, processing the sensor information based on the processing amount of the sensor information corresponding to the set area; determining a state of a structure using the processed sensor information; A recording medium for recording a program that causes a computer to output the determined state of the structure.
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Abstract
Description
図面を参照して、本発明における第1の実施形態を説明する。
図1は、第1の実施形態にかかる状態判定装置10の構成の一例を示すブロック図である。状態判定装置10は、地表情報取得部101と、領域設定部102と、センサ情報処理部103と、状態判定部104と、出力部105とを備える。なお、各構成は、図示しない記憶部に、各構成が特定した情報、取得した情報、及び、判定した情報の少なくとも一部を保存してもよい。この場合、各構成は、記憶部から必要な情報を取得してもよい。状態判定装置10は、センサ情報取得装置から取得したセンサ情報に基づいて、構造物の劣化等の状態を判定するための装置である。構造物としては、例えば、道路、橋梁、のり枠、堤防、桟橋、護岸、又は、滑走路等の土木構造物が挙げられる。
図7は、第1の実施形態にかかる状態判定装置10の動作の一例を示すフロー図である。地表情報取得部101は、特定された領域における地表変位を取得する(ステップS101)。領域設定部102は、地表変位に基づいて、センサ情報取得装置からセンサ情報を取得する処理で用いるセンサ情報の処理量を所定の領域毎に設定する(ステップS102)。次いで、センサ情報処理部103は、領域設定部102により設定された領域に対応するセンサ情報の処理量に基づいて、センサ情報のデータ量を処理する(ステップS103)。状態判定部104は、センサ情報を用いて構造物の状態を判定する(ステップS104)。次いで、出力部105は、状態判定部104により判定した構造物の状態を出力する(ステップS105)。
また、状態判定装置10は、状態判定部104により判定された構造物の状態を出力する。これにより、利用者等に、センサ情報の処理量を削減しながら、地表変位が大きい領域における構造物の詳細情報を提供できる。
次に、状態判定装置10のハードウェア構成について説明する。状態判定装置10の各構成部は、ハードウェア回路で構成されてもよい。あるいは、状態判定装置10において、各構成部は、ネットワークを介して接続した複数の装置を用いて、構成されてもよい。例えば、状態判定装置10は、クラウドコンピューティングを利用して構成されてもよい。あるいは、状態判定装置10において、複数の構成部は、1つのハードウェアで構成されてもよい。あるいは、状態判定装置10は、CPU(Central Processing Unit)と、ROM(Read Only Memory)と、RAM(Random Access Memory)とを含むコンピュータ装置として実現されてもよい。状態判定装置10は、上記構成に加え、さらに、ネットワークインターフェース回路(NIC:Network Interface Circuit)を含むコンピュータ装置として実現されてもよい。
次に、本開示の第2の実施形態について図面を参照して詳細に説明する。以下、本実施形態の説明が不明確にならない範囲で、前述の説明と重複する内容については説明を省略する。
図11は、第2の実施形態にかかる状態判定装置11の動作の一例を示すフロー図である。本実施形態におけるステップS201~ステップS204は、第1の実施形態におけるステップS101~ステップS104と同様のため、説明を省略する。経路算出部115は、領域設定部112によりセンサ情報の処理量が閾値より高く設定された領域を走行する経路を算出する(ステップS205)。最後に、出力部116は、状態判定部114により判定した構造物の状態に加えて、経路算出部115により算出された経路情報を出力する(ステップS206)。
地表測定装置から取得した測定画像を用いて地表変位を取得する地表情報取得手段と、
前記地表変位に基づいて、センサ情報取得装置からセンサ情報を取得する処理で用いるセンサ情報の処理量を所定の領域毎に設定する領域設定手段と、
前記設定された領域に対応する前記センサ情報の処理量に基づいて、前記センサ情報を処理するセンサ情報処理手段と、
前記処理された前記センサ情報を用いて構造物の状態を判定する状態判定手段と、
前記判定した前記構造物の状態を出力する出力手段と、
を備える状態判定装置。
前記センサ情報を取得する処理は、前記センサ情報取得装置からセンサ情報を取得する処理、前記センサ情報取得装置から取得したセンサ情報を前記状態判定装置へアップロードする処理、又は前記状態判定手段により前記構造物を状態判定する処理の少なくとも一つの処理である
付記1に記載の状態判定装置。
前記領域設定手段は、前記センサ情報を処理する頻度を前記領域毎に設定する
付記1又は付記2に記載の状態判定装置。
前記センサ情報が、動画像であり、
前記領域設定手段は、前記動画像のフレームレートを前記領域毎に設定する
付記1~3のいずれかに記載の状態判定装置。
前記センサ情報が、前記センサ情報取得装置を搭載する移動体が走行する構造物に関連する前記センサ情報である
付記1~4のいずれかに記載の状態判定装置。
前記構造物が道路であり、
前記移動体が、道路を走行する車両である
付記5に記載の状態判定装置。
前記センサ情報処理手段は、前記センサ情報として、前記構造物を撮像した撮像画像を取得し、
前記出力手段は、前記撮像画像上に、前記構造物の状態を示す情報を表示する
付記1~6のいずれかに記載の状態判定装置。
前記出力手段は、地図上に、前記構造物の劣化の程度を示す情報を表示する
付記1~6のいずれか一項に記載の状態判定装置。
前記出力手段は、前記構造物の劣化の程度を示す情報として、道路のひび割れ、ポットホール、わだち掘れ、及び、平坦性異常の少なくともいずれかの道路劣化の程度を表す指標を表示する
付記7又は付記8に記載の状態判定装置。
前記領域設定手段により、前記センサ情報の処理量が所定の閾値より高く設定された領域を走行する経路を算出する経路算出手段を更に備え、
前記出力手段は、前記判定した構造物の状態に加えて、算出した経路情報を出力する
付記1~9のいずれかに記載の状態判定装置。
地表測定装置から取得した測定画像を用いて地表変位を取得し、
前記地表変位に基づいて、センサ情報取得装置からセンサ情報を取得する処理で用いるセンサ情報の処理量を所定の領域毎に設定し、
前記設定された領域に対応する前記センサ情報の処理量に基づいて、前記センサ情報を処理し、
前記処理された前記センサ情報を用いて構造物の状態を判定し、
前記判定した前記構造物の状態を出力する
状況判定方法。
地表測定装置から取得した測定画像を用いて地表変位を取得し、
前記地表変位に基づいて、センサ情報取得装置からセンサ情報を取得する処理で用いるセンサ情報の処理量を所定の領域毎に設定し、
前記設定された領域に対応する前記センサ情報の処理量に基づいて、前記センサ情報を処理し、
前記処理された前記センサ情報を用いて構造物の状態を判定し、
前記判定した前記構造物の状態を出力すること
をコンピュータに実行させるプログラムを記録する記録媒体。
101、111 地表情報取得部
102、112 領域設定部
103、113 センサ情報処理部
104、114 状態判定部
105、116 出力部
115 経路算出部
510 コンピュータ
520 ドライブレコーダー
530 SAR
540 端末装置
550 車両
580 ネットワーク
610 CPU
620 ROM
630 RAM
640 記憶装置
650 NIC
Claims (12)
- 地表測定装置から取得した測定画像を用いて地表変位を取得する地表情報取得手段と、
前記地表変位に基づいて、センサ情報取得装置からセンサ情報を取得する処理で用いるセンサ情報の処理量を所定の領域毎に設定する領域設定手段と、
前記設定された領域に対応する前記センサ情報の処理量に基づいて、前記センサ情報を処理するセンサ情報処理手段と、
前記処理された前記センサ情報を用いて構造物の状態を判定する状態判定手段と、
前記判定した前記構造物の状態を出力する出力手段と、
を備える状態判定装置。 - 前記センサ情報を取得する処理は、前記センサ情報取得装置からセンサ情報を取得する処理、前記センサ情報取得装置から取得したセンサ情報を前記状態判定装置へアップロードする処理、又は前記状態判定手段により前記構造物を状態判定する処理の少なくとも一つの処理である
請求項1に記載の状態判定装置。 - 前記領域設定手段は、前記センサ情報の処理量として、前記センサ情報を処理する頻度を前記領域毎に設定する
請求項1又は請求項2に記載の状態判定装置。 - 前記センサ情報が、動画像であり、
前記領域設定手段は、前記センサ情報の処理量として、前記動画像のフレームレートを前記領域毎に設定する
請求項1~3のいずれか一項に記載の状態判定装置。 - 前記センサ情報が、前記センサ情報取得装置を搭載する移動体が走行する構造物に関連する前記センサ情報である
請求項1~4のいずれか一項に記載の状態判定装置。 - 前記構造物が道路であり、
前記移動体が、道路を走行する車両である
請求項5に記載の状態判定装置。 - 前記センサ情報処理手段は、前記センサ情報として、前記構造物を撮像した撮像画像を取得し、
前記出力手段は、前記撮像画像と共に、前記構造物の劣化の程度を示す情報を表示する
請求項1~6のいずれか一項に記載の状態判定装置。 - 前記出力手段は、地図上に、前記構造物の劣化の程度を示す情報を表示する
請求項1~6のいずれか一項に記載の状態判定装置。 - 前記出力手段は、前記構造物の劣化の程度を示す情報として、道路のひび割れ、ポットホール、わだち掘れ、及び、平坦性異常の少なくともいずれかの道路劣化の程度を表す指標を表示する
請求項7又は請求項8に記載の状態判定装置。 - 前記領域設定手段により、前記センサ情報の処理量が所定の閾値より高く設定された領域を走行する経路を算出する経路算出手段を更に備え、
前記出力手段は、前記判定した構造物の状態に加えて、算出した経路情報を出力する
請求項1~9のいずれか一項に記載の状態判定装置。 - 地表測定装置から取得した測定画像を用いて地表変位を取得し、
前記地表変位に基づいて、センサ情報取得装置からセンサ情報を取得する処理で用いるセンサ情報の処理量を所定の領域毎に設定し、
前記設定された領域に対応する前記センサ情報の処理量に基づいて、前記センサ情報を処理し、
前記処理された前記センサ情報を用いて構造物の状態を判定し、
前記判定した前記構造物の状態を出力する
状況判定方法。 - 地表測定装置から取得した測定画像を用いて地表変位を取得し、
前記地表変位に基づいて、センサ情報取得装置からセンサ情報を取得する処理で用いるセンサ情報の処理量を所定の領域毎に設定し、
前記設定された領域に対応する前記センサ情報の処理量に基づいて、前記センサ情報を処理し、
前記処理された前記センサ情報を用いて構造物の状態を判定し、
前記判定した前記構造物の状態を出力すること
をコンピュータに実行させるプログラムを記録する記録媒体。
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JP2010049442A (ja) * | 2008-08-21 | 2010-03-04 | Sanyo Electric Co Ltd | 車載通信装置 |
JP2018021375A (ja) * | 2016-08-03 | 2018-02-08 | 株式会社東芝 | 舗装ひび割れ解析装置、舗装ひび割れ解析方法及び舗装ひび割れ解析プログラム |
JP2019179316A (ja) * | 2018-03-30 | 2019-10-17 | 株式会社Nttドコモ | 通行路判定システム |
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JP2010049442A (ja) * | 2008-08-21 | 2010-03-04 | Sanyo Electric Co Ltd | 車載通信装置 |
JP2018021375A (ja) * | 2016-08-03 | 2018-02-08 | 株式会社東芝 | 舗装ひび割れ解析装置、舗装ひび割れ解析方法及び舗装ひび割れ解析プログラム |
JP2019179316A (ja) * | 2018-03-30 | 2019-10-17 | 株式会社Nttドコモ | 通行路判定システム |
JP2020008996A (ja) * | 2018-07-04 | 2020-01-16 | 株式会社デンソーテン | 道路情報収集支援サーバ、道路情報収集装置、道路情報収集システム、及び道路情報収集方法 |
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