WO2019187093A1 - 物体同定装置 - Google Patents
物体同定装置 Download PDFInfo
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- WO2019187093A1 WO2019187093A1 PCT/JP2018/013851 JP2018013851W WO2019187093A1 WO 2019187093 A1 WO2019187093 A1 WO 2019187093A1 JP 2018013851 W JP2018013851 W JP 2018013851W WO 2019187093 A1 WO2019187093 A1 WO 2019187093A1
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- sensor
- information
- vehicle
- specifier
- sensor position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
-
- 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/50—Systems of measurement based on relative movement of target
- G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/12—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to parameters of the vehicle itself, e.g. tyre models
-
- 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
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
-
- 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
- G01S13/86—Combinations of radar systems with non-radar systems, e.g. sonar, direction finder
- G01S13/867—Combination of radar systems with cameras
-
- 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
- G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar
- G01S13/874—Combination of several systems for attitude determination
-
- 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
- G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
- G01S13/92—Radar or analogous systems specially adapted for specific applications for traffic control for velocity measurement
-
- 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
-
- 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/86—Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders
-
- 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/87—Combinations of systems using electromagnetic waves other than radio waves
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
- G06V20/58—Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
- G06V20/588—Recognition of the road, e.g. of lane markings; Recognition of the vehicle driving pattern in relation to the road
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2422/00—Indexing codes relating to the special location or mounting of sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2554/00—Input parameters relating to objects
- B60W2554/40—Dynamic objects, e.g. animals, windblown objects
- B60W2554/404—Characteristics
Definitions
- the present invention relates to an object identification device.
- the sensor has a camera that can obtain size information, which is information about the size of the measured vehicle, and a radar that can measure position and speed continuously, but LIDAR (LIght Detection And Ranging), which cannot obtain size information.
- LIDAR LIght Detection And Ranging
- a radar will be described as an example of an apparatus that cannot measure size information but can continuously measure position and velocity.
- each of the plurality of radars transmits a measurement result of a different part of the vehicle that can be measured, depending on the installation position of the radar, the radar characteristics, or the direction of the vehicle that the radar can measure.
- the measurement result of the radar installed on the road side that is in front of the vehicle and the measurement result of the radar that is installed on the road side in the rear of the vehicle are the size of the vehicle. If the measurement results are integrated without information, whether the measurement results of multiple radars are due to the same vehicle, such as erroneously recognizing that it is the measurement result of another vehicle even though it is the measurement result of the same vehicle It becomes difficult to determine whether.
- Patent Document 1 discloses an object identification device that combines a radar measurement result and a camera measurement result to determine whether the vehicle detected by the radar and the target vehicle that is the camera measurement result are the same vehicle. To do.
- the object identification device described in Patent Document 1 on the assumption that the radar device and the camera are facing the same direction, the vehicle detected by the radar and the target vehicle that is the measurement result of the camera are the same vehicle. It is determined whether there is. There are various orientations of cameras and radar devices installed on the roadside, but the problem is that the object identification device described in Patent Document 1 cannot be applied to object identification using cameras and radar devices installed on the roadside. was there.
- the present invention has been made in view of the above, and an object of the present invention is to obtain an object identification device that can suppress an error in determining whether the measurement results of a plurality of sensors are from the same vehicle.
- an object identification device acquires sensor information measured by a sensor from a sensor that measures the position of the object and the speed of the object, and the size of the object.
- An acquisition unit that acquires size information from a device that transmits size information indicating a position, a specifier adding unit that assigns a sensor position specifier that indicates which part of an object is easily detected for each sensor information, and a sensor position
- an information integration unit that determines whether the object corresponding to the size information and the object corresponding to the sensor information are the same based on the specifier.
- the object identification device has an effect of suppressing an error in determining whether the measurement results of a plurality of sensors are from the same vehicle.
- FIG. 1 is a diagram showing functional blocks of an object identification device according to a first embodiment.
- 1 is a diagram illustrating a control circuit according to a first embodiment;
- FIG. which shows the operation
- FIG. Flowchart of the operation of the object identification device according to the first exemplary embodiment.
- Embodiment 1 FIG.
- the object identification device is installed on the road side, and detects information related to a vehicle traveling on a road which is an example of an object.
- Sensors such as millimeter wave radar and LIDAR can obtain sensor information that is information on the position of a part of an object such as a vehicle and the speed of the object, but cannot measure the entire object. For this reason, when the measurement results of a plurality of sensors are obtained, it is difficult to determine whether these measurement results are for the same object or different objects based on these measurement results alone. is there. For this reason, it is necessary to identify which part of which object each measurement result is measured using size information that is information indicating the size and position of the object.
- a sensor position specifier that is a value indicating which part of an object is easily detected is assigned to the sensor, thereby facilitating the association between the measurement result of the sensor and the object.
- the object identified by the object identification device is a vehicle will be described as an example.
- FIG. 1 is a diagram illustrating functional blocks of the object identification device according to the first embodiment.
- the object identification device 10 includes an acquisition unit 11, a specifier assignment unit 12, an information integration unit 13, a distribution information conversion unit 14, and a distribution unit 15.
- the acquisition unit 11 receives sensor information from the sensors 1-1 to 1-n.
- the acquisition unit 11 receives size information from the size information transmitter 2-1 to the size information transmitter 2-m.
- the acquisition unit 11 acquires the current time from GPS (Global Positioning System).
- the distribution information conversion unit 14 converts the information integrated by the information integration unit 13 into information for distribution.
- the distribution unit 15 distributes the converted distribution information to a dynamic map user such as an automatic traveling vehicle.
- sensors 1-1 to 1-n are shown without being distinguished from each other, they are referred to as sensors 1.
- the size information transmitter 2-1 to the size information transmitter 2-m are indicated without being distinguished from each other, they are referred to as a size information transmitter 2.
- the sensor 1 is installed on the road side and obtains sensor information from the vehicle.
- the size information transmitter 2 is, for example, a camera installed above the road and having a transmission function for acquiring an image of the entire vehicle from above, or the vehicle type information of the own vehicle, the size information of the own vehicle, and the own vehicle at a specific time.
- the vehicle-mounted device that transmits the position information of the vehicle, and obtains vehicle size information.
- the specifier assignment unit 12 receives sensor information from the acquisition unit 11.
- the specifier assigning unit 12 receives assignment information, which is information defining the definition of each sensor position specifier, in order to assign sensor position specifiers from an external device or the like.
- the sensor position designator assignment information may be created inside the object identification device 10.
- the specifier assigning unit 12 assigns sensor position specifiers to the sensors 1-1 to 1-n based on the assignment information.
- the specifier assigning unit 12 transmits the first information obtained by adding the sensor position specifier to the sensor information to the information integration unit 13. Details of the sensor position specifier will be described later.
- the information integration unit 13 receives the first information from the specifier assigning unit 12. Further, the information integration unit 13 receives size information from the acquisition unit 11. In addition, the information integration unit 13 uses the plurality of first information and the size information to associate whether or not the plurality of first information is information on the same object. Further, the information integration unit 13 uses the plurality of first information and the position information indicated by the sensor position specifier calculated using the size information to determine whether the plurality of first information is information from the same vehicle. Determine whether or not.
- the distribution information conversion unit 14 converts the vehicle position information indicated in the traveling direction and the crossing direction into latitude and longitude or vehicle position information for distribution using a lane link.
- the distribution unit 15 distributes the distribution information converted by the distribution information conversion unit 14 to a user of a dynamic map such as an automatic traveling vehicle.
- the acquisition unit 11, the specifier assignment unit 12, the information integration unit 13, the distribution information conversion unit 14, and the distribution unit 15 according to the first embodiment are realized by a processing circuit that is an electronic circuit that performs each process.
- the processing circuit may be dedicated hardware or a control circuit including a memory and a CPU (Central Processing Unit) that executes a program stored in the memory.
- the memory corresponds to, for example, a nonvolatile or volatile semiconductor memory such as a RAM (Random Access Memory), a ROM (Read Only Memory), or a flash memory, a magnetic disk, or an optical disk.
- the control circuit is, for example, the control circuit 20 having the configuration shown in FIG.
- the control circuit 20 includes a processor 20a, which is a CPU, and a memory 20b.
- a processor 20a which is a CPU
- a memory 20b When realized by the control circuit 20 shown in FIG. 2, it is realized by the processor 20a reading and executing a program corresponding to each process stored in the memory 20b.
- the memory 20b is also used as a temporary memory in each process performed by the processor 20a.
- FIG. 3 is a diagram illustrating an example of the definition of the sensor position specifier according to the first embodiment.
- FIG. 3 is a diagram in which the vertical axis represents the crossing direction of the road and the horizontal axis represents the traveling direction of the road.
- a vehicle is arranged in a range defined by the vertical axis and the horizontal axis.
- left and right are determined based on the traveling direction of the road. That is, the direction in which the vertical axis extends in FIG. 3 is the left.
- the direction in which the horizontal axis extends is the front.
- FIG. 3 is a diagram illustrating an example of the definition of the sensor position specifier according to the first embodiment.
- FIG. 3 is a diagram in which the vertical axis represents the crossing direction of the road and the horizontal axis represents the traveling direction of the road.
- a vehicle is arranged in a range defined by the vertical axis and the horizontal axis.
- left and right are determined based on the traveling direction of the road. That is,
- the sensor position specifier located at the rear right end of the vehicle is 1
- the sensor position specifier located at the rear left end of the vehicle is 2
- the sensor position specifier located at the front right end of the vehicle is 3, the front left end of the vehicle
- the sensor position specifier located at 4 the front center of the vehicle or the sensor position specifier located at the part where the left end and right end of the vehicle cannot be distinguished, and the rear center of the vehicle or the left end and right end of the vehicle can be distinguished.
- a sensor position specifier located in a non-existing portion is defined as 6.
- Information indicating the definitions of these sensor position specifiers is sensor position specifier assignment information received by the specifier assigning unit 12.
- FIG. 4 is a diagram illustrating an example of setting a sensor position specifier according to the first embodiment.
- the arrow indicates the traveling direction of the road.
- a road area is defined by dividing road information obtained by approximating a road with a plurality of straight lines.
- the road that draws an arc is approximated by ten straight lines, and each of the ten straight lines corresponds to one region. That is, one straight line becomes one area.
- the road coordinate system may be a coordinate system expressed by the traveling direction of the road and the crossing direction of the road, or a general orthogonal coordinate system.
- the information integration unit 13 holds information on the position of each divided road area.
- the sensor 1-1, the sensor 1-2, and the sensor 1-3 measure the vehicle in each of 10 road areas.
- a measurement range 31, a measurement range 32, and a measurement range 33 indicated by triangles are ranges that can be measured by the sensor 1-1, the sensor 1-2, and the sensor 1-3, respectively.
- the sensor 1-1 transmits the measurement point measured in the measurement range 31 to the object identification device 10.
- the sensor 1-2 transmits the measurement point measured in the measurement range 32 to the object identification device 10.
- the sensor 1-3 transmits the measurement point measured in the measurement range 33 to the object identification device 10.
- the left and right discrimination of the sensor position specifier set for each road area is determined as to which position of the extended straight line the sensor 1 is located when the straight lines defined for each road area are extended to the sensor 1 respectively.
- the area No. A case where one sensor position specifier is set will be described.
- FIG. A straight line obtained by extending the straight line defined by 1 to the sensor 1-1 is indicated by a broken line.
- the sensor 1-1 is located on the left side in the traveling direction of the extended broken line.
- Sensor 1-1 has the area No. 1 and the sensor 1-1 is located on the left side of the extended straight line. Therefore, it is determined that the sensor 1-1 can easily measure the front left end of the vehicle. 1 is set to 4 for the sensor position specifier.
- the area No. When the sensor position specifier of 2 is set, the area No. When the straight line 2 is extended to the sensor 1-1, the sensor 1-1 is positioned at the center of the extended straight line. Therefore, the sensor 1-1 has a region No. In 2, it is determined that the front center of the vehicle is easy to measure, and 5 is set as the sensor position specifier. Thus, the sensor position specifier is set for each sensor 1 and for each road area.
- the measured value of sensor 1 is not valid, so no sensor position specifier is assigned.
- 0 or the like that is a sensor position specifier indicating that the measured value of the sensor 1 is not valid may be defined, and if the sensor position specifier is set to 0, the measured value of the sensor may be invalidated.
- the measurement range 31 of the sensor 1-1 is an area No. 1 to region No. 3, the area No. 1 to region No. Region No. 3 other than No sensor position specifier is assigned to the area No. 1 to region No.
- a sensor position specifier other than 3 may be set to 0.
- FIG. 5 is a diagram illustrating another example of the setting of the sensor position specifier according to the first embodiment.
- FIG. 5 shows an example of setting the sensor position specifier assuming that the sensor 1 is installed at a position away from the road side of the road on which the vehicle is measured or the sensor 1 is installed on a road not shown. is there.
- the sensor position specifier 5 and the sensor position specifier 6 are set using the start point of the road in the road region and the road width of the road.
- the line formed by extending the right end point of the road (referred to as line A) and the right end point of the road
- An extended line (referred to as line B) is obtained.
- the sensor position specifier cannot be discriminated between right and left, and the sensor position specifier of the sensor 1 on the front side of the vehicle is set to 5.
- the sensor position specifier of the sensor 1 on the rear side of the vehicle is set to 6. Further, in FIG. 4, among the ones on the right side of the line A, the sensor position specifier of the sensor 1 in front of the vehicle is set to 3.
- the sensor position specifier of the sensor 1 located behind the vehicle is set to 1.
- the sensor position specifier of the sensor 1 in front of the vehicle is set to 4.
- 2 is set as the sensor position specifier of the sensor 1 located behind the vehicle. If the sensor 1 is a millimeter wave radar, the speed of the vehicle cannot be measured directly beside the road. Therefore, a sensor position specifier is not set for the sensor 1 installed beside the road because the measurement result is invalid. A sensor position specifier 0 indicating invalidity is set.
- the information integration unit 13 identifies the object using the first information, which is information obtained by adding a sensor position specifier to the sensor information, and the size information.
- FIG. 6 is a diagram illustrating an operation of identifying a vehicle according to the first embodiment.
- the sensor 1-4 and the sensor 1-5 and the camera which is the size information transmitter 2 are used, and the information obtained by adding the sensor position specifier to the sensor information and the size information are used.
- Sensors 1-4 and 1-5 are, for example, millimeter wave radars. As an example shown in FIG.
- each of the sensor 1-4 and the sensor 1-5 has a fixed sensor position specifier and observes the position of the vehicle at a constant period.
- the camera can measure the entire vehicle from above and obtain size information.
- the camera measurement has a limited angle of view, and the vehicle image can be acquired only at a specific time.
- the sensor arrangement diagram of FIG. 6 shows a diagram in which the sensors 1-4 and the sensors 1-5 are arranged such that the horizontal axis is the traveling direction of the road and the vertical axis is the transverse direction of the road.
- the circle with no hatching inside is the measurement of the sensor 1-4
- the circle with a hatching inside is the measurement of the sensor 1-5.
- the straight lines extending from the sensor 1-4 and the sensor 1-5 are the respective measurement ranges of the sensor 1-4 and the sensor 1-5.
- the sensor 1-4 is installed on the right side of the road and faces the same direction as the traveling direction. Measure. For this reason, since the sensor 1-4 is located at a place where the rear right end of the vehicle is easy to measure, 1 is set as the sensor position specifier.
- Sensor 1-5 is installed on the left side of the road and measures the vehicle in the direction opposite to the traveling direction. Therefore, since the sensor 1-5 can easily measure the front left end of the vehicle, the sensor position specifier is set to 4. Since the camera captures the entire vehicle from above, the size of the entire vehicle and the position of the vehicle at a specific time can be determined clearly. In addition, the camera transmits to the object identification device 10 size information that is information on the size of the entire vehicle such as an image and information on the position of the vehicle. For this reason, the information integration unit 13 calculates the position corresponding to the sensor position specifier assigned to the sensor information transmitted from the sensor 1 by using the size information for a specific time when the size information is acquired. can do.
- the object identification device 10 will be described in the time series of the times T 1 to T 6 in FIG. At times T 1 to T 6 , the vehicle moves in the traveling direction of the road.
- the sensor 1-4 and the sensor 1-5 by the vehicle to the respective measurement range enters, which may initiate a position and measurement of the vehicle speed of the vehicle.
- sensor information sensor 1-4 is measured is indicated by the measurement point 41.
- sensor information sensor 1-5 is measured is indicated by the measurement point 51.
- or sensor 1-4 and the sensor 1-5 measures the same vehicle is unknown.
- the measurement points measured by the sensors 1-4 and 1-5 are transmitted to the object identification device 10.
- the object identification device 10 records the measurement points measured by the sensors 1-4 and 1-5 as trajectory information.
- the sensor 1-4 and the sensor 1-5 to continue the measurement.
- the trajectory information records the vehicle speed in addition to the vehicle position at each time.
- Measuring point 42 and the measurement point 52 is a measurement point sensor 1-4 and the sensor 1-5 is measured at each time T 2.
- Time T 3 is a specific time of the above.
- An image captured by the camera is transmitted to the acquisition unit 11.
- FIG. 7 is a diagram illustrating a method for calculating the positions of the six sensor position specifiers using the image according to the first embodiment.
- the method of calculating the positions of the six sensor position specifiers includes, for example, position information of the sensor position specifier 3 from the image (X is the coordinate in the traveling direction and Y is the coordinate in the transverse direction), the vertical width L of the vehicle, and When the lateral width W of the vehicle is obtained, the position information coordinates of the sensor position designator 4 are X in the traveling direction and Y + W in the transverse direction.
- other sensor position specifiers can be calculated using the position information of one sensor position specifier, the vehicle vertical width, and the vehicle horizontal width. Note that the position information of the six sensor position specifiers may be obtained from the image. Measuring point 43 and the measurement point 53 is a measurement point sensor 1-4 and the sensor 1-5 was measured at time T 4, respectively.
- the sensor position specifier having the same value as the sensor position specifier of the vehicle acquired by the sensors 1-4 and 1-5 is compared. If the difference between the positions is within the first threshold as a result of the comparison, the sensor position specifier having the same value as the sensor position specifier acquired by the sensors 1-4 and 1-5 is measured by the same vehicle.
- the sensor position specifier having the same value as the sensor position specifier acquired by the sensors 1-4 and 1-5 is measured by the same vehicle.
- the sensor information of the sensors 1-4 and 1-5 is corrected to the time when the camera size information is acquired.
- the sensor information about the time T 1 , the time T 2 , and the time T 4 of the sensors 1-4 and the sensor 1-5 is registered as trajectory information in the information integration unit 13, respectively. For this reason, in order to correct the sensor information of the sensors 1-4 and 1-5, the sensor information at the time T 2 or the time T 4 closest to the time T 3 that is the measurement time of the camera is used.
- a process velocity V2 of the vehicle when the process position X4, and time T 2 when the traveling direction position X2 and the time T 4 the time T 2,, process velocity V4 of the vehicle at time T 4 is if it is clear, the average velocity at time T 4 from the time T 2, by using these (V_ave) can be calculated by the equation (1).
- V_ave (V2 + V4) / 2 (1)
- hosei_X3 X2 + V_ave ⁇ (T 3 ⁇ T 2 ) (2) Position of the sensor position specifier is calculated using the sensor information corrected at time T 3 and (hosei_X3), the difference between the position of the sensor position specifier is calculated using the size information of the time T 3 is within the threshold If it can be determined, sensor information and size information can be determined to be the same object.
- the measurement point 44 measured by the sensor 1-4 having the sensor position specifier 1 is compared with the position of the measurement point having the sensor position specifier 1 of the six sensor position specifiers. To do. As a result of the comparison, if the difference between the positions is within the first threshold, the measurement point 44 measured by the sensor 1-4 and the vehicle measured by the camera are associated with each other as the same vehicle. Similarly, the measurement point 54 measured by the sensor 1-5 whose sensor position specifier is 4 and the position of the measurement point whose sensor position specifier is 4 among the six sensor position specifiers obtained by the camera are shown. Compare.
- the measurement point 54 measured by the sensor 1-5 is associated with the vehicle measured by the camera as the same vehicle.
- the second information is the time at which the sensor 1-5 has acquired a track including the measurement point 54 is measured
- the center position and size information of the vehicle is calculated using the size information obtained by the camera at time T 3 Is associated.
- the track acquired by the sensor 1-4 and the track acquired by the sensor 1-5 are derived from the same vehicle.
- Measuring point 44 and the measurement point 54 is a measurement point sensor 1-4 and the sensor 1-5 was measured at time T 5, respectively.
- the track pair 61 is a track pair of the same vehicle is determined at time T 5.
- information integration section 13 continues the integration of the position information based on the information of the track pair.
- Measuring point 45 and the measurement point 55 is a measurement point sensor 1-4 and the sensor 1-5 was measured at time T 6, respectively.
- the track pair 62 is a track pair of the same vehicle is determined at time T 6.
- FIG. 6 shows an example in which the sensor position specifiers of the sensors 1-4 and 1-5 do not change at times T 1 to T 6 , but the sensor position specifiers of the sensors 1-4 and 1-5 are shown. Even if is changed according to time, it can be determined that they are the same vehicle. For example, at time T 6, when the sensor position specifier sensor 1-5 is 2 and setting the relative positional relationship of the vehicle obtained by the measurement points 44 and the measuring point 54, at time T 6 The relative positional relationship of the vehicle obtained by the measurement point 45 and the measurement point 55 is changed. Even in such a case, if the size information is obtained and the sensor position specifier is set, the second information associated with the size information is the same. Can be recognized.
- FIG. 8 is a flowchart of the operation of the object identification device 10 according to the first exemplary embodiment.
- the operation of the object identification device 10 is processed at regular intervals.
- the acquisition unit 11 receives sensor information from the sensor 1 or size information from the size information transmitter 2 (step S1).
- the specifier assigning unit 12 transmits the first information obtained by adding the sensor position specifier to the received sensor information to the information integration unit 13. (Step S3).
- the information integration unit 13 records the first information as trajectory information in association with past measurement results (step S4). In addition, when there is no past measurement result, it is not associated but is simply recorded as trajectory information.
- the information integration unit 13 calculates positions corresponding to all sensor position specifiers using the size information (step S5).
- step S6 If other sensor information or size information is received in the determination cycle (step S6, Yes), the process returns to step S2. If no other sensor information or size information is received in the determination period (step S6, No), the process proceeds to step S7. When only the size information is received within the current determination cycle (step S7, Yes), the process ends. If other than size information is received within the current determination cycle (step S7, No), the process proceeds to step S8.
- the information integration unit 13 uses the position of the sensor position specifier assigned to the sensor information and the position of the sensor position specifier having the same value as the sensor information among all the sensor position specifiers obtained from the current or past size information. Are compared (step S8).
- the information integration unit 13 assigns the first information to the first information and transmits the second information, which is the time when the size information is acquired (step S10).
- a second threshold value may be provided for the difference between the current time and the time when the size information is acquired, and size information within the second threshold value may be compared.
- the sensor information may be corrected to a value corresponding to the time when the size information was acquired, and the corrected sensor information may be compared with the size information.
- the first information to which the same second information is assigned is regarded as the same vehicle information, and the location information is integrated and transmitted to the distribution information conversion unit 14 as information derived from the same vehicle. .
- the integration of the position information is, for example, by calculating a value obtained by averaging the center positions of the vehicles using the first information determined to be the same vehicle and the information on the positions of all the sensor position specifiers. Giving to the first information to which the information on the positions of all sensor position specifiers is given.
- integrating the position information includes, for example, converting the vehicle size and the vehicle center position into an integrated information format.
- the information integration unit 13 does not add the second information to the first information and transmits the first information to the distribution information conversion unit 14 (step S11).
- the distribution information conversion unit 14 converts the information received from the information integration unit 13 into information for distribution (step S12).
- the distribution unit 15 distributes information for distribution (step S13).
- the acquisition unit 11 acquires sensor information from the sensor 1.
- the acquisition unit 11 acquires size information from the size information transmitter 2 and transmits the size information to the information integration unit 13.
- the specifier assigning unit 12 transmits the first information obtained by adding the sensor position specifier to the sensor information to the information integrating unit 13.
- the information integration unit 13 calculates all sensor position specifiers of the vehicle using the size information.
- the information integration unit 13 also detects the position of the sensor position specifier obtained from the first information and the value of the sensor position specifier that is the same as the first information in all the sensor position specifiers obtained using the size information. It is determined whether the difference from the position is within the first threshold range.
- the vehicle that has acquired the first information is assumed to be the same as the vehicle that has acquired the size information, and the second information is added to the first information. Moreover, the positional information of the 1st information to which the same 2nd information was provided is integrated.
- the first information to which the second information is assigned has high reliability, and the first information to which the second information is not assigned has low reliability. Therefore, it is possible to determine whether the measurement points by the plurality of sensors 1 are the same vehicle by using the sensor information obtained by the sensor 1, the size information that is the measurement result of the camera, and the sensor position specifier. it can. For this reason, it is possible to suppress errors in determining whether the measurement results of the plurality of sensors 1 are from the same vehicle.
- FIG. 9 is a diagram illustrating an example of the definition of the sensor position specifier according to the second embodiment.
- a truck sensor position specifier is defined as a vehicle type different from the ordinary vehicle. Since the truck has a long shape in the traveling direction of the road, the side of the vehicle can be measured in addition to the sensor position specifier defined for the ordinary vehicle. However, since the shape is long, it may be difficult to determine whether the front of the track is measured or the rear of the track is measured. Therefore, a sensor position specifier 7 that newly measures the right side of the vehicle but cannot distinguish between front and rear and a sensor position specifier 8 that measures the left side of the vehicle but cannot distinguish between front and rear are defined.
- FIG. 10 is a diagram illustrating an example of setting a sensor position specifier according to the second embodiment.
- the region No. The sensor position specifier of 3 is set to 7.
- Sensor 1-2 area No. The sensor position specifier of 5 is set to 8.
- the sensor position specifier 7 and the sensor position specifier 8 are used for a vehicle having a long vehicle length such as a truck when passing right next to the sensor 1 such as a radar or near the angle limit of the measurement range of the sensor 1. It is effective to set it when it is unclear where on the side of the vehicle the vehicle is passing.
- the information integration unit 13 needs to collect not only size information but also target vehicle type information. Alternatively, the information integration unit 13 needs to estimate the vehicle type information from the size information.
- the object identification device 10 by adding the vehicle type information to the sensor position specifier, it becomes easier for the object identification device 10 to determine whether the measurement points by the plurality of sensors 1 are the same vehicle. . For this reason, it is possible to suppress errors in determining whether the measurement results of the plurality of sensors 1 are from the same vehicle.
- FIG. 11 is a diagram illustrating an example of setting a sensor position specifier according to the third embodiment.
- FIG. 11 is an example of assignment of sensor position specifiers when there is a road 71 and a road 72 opposite to the road 71.
- the information integration unit 13 obtains information on the traveling direction of the road on which the vehicle travels based on the speed of the vehicle or distribution information from the vehicle-mounted device.
- sensor information with different road traveling directions is acquired, sensor information with different road traveling directions is often information from vehicles traveling on roads with different traveling directions. When information is acquired, these are defined as paths having different directions, and a sensor position specifier is set for each.
- the object identification device 10 by adding road direction information to the sensor position specifier, the object identification device 10 further determines whether or not the measurement points by the plurality of sensors 1 are the same vehicle. It becomes easy. For this reason, it is possible to suppress errors in determining whether the measurement results of the plurality of sensors 1 are from the same vehicle.
- Embodiment 4 Information on the direction of travel of the road may be obtained with a camera or the like. If the information on the direction of travel of the road obtained by the camera does not match the information on the sensor position specifier obtained from the sensor 1, the sensor position specifier is selected based on the direction of travel of the road obtained by the camera. It may be updated.
- the sensor position specifier is updated using the information on the traveling direction of the road obtained by the camera or the like. This makes it easier to determine whether or not the vehicles are the same. For this reason, it is possible to suppress errors in determining whether the measurement results of the plurality of sensors 1 are from the same vehicle.
- the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
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Abstract
Description
実施の形態1にかかる物体同定装置は、路側に設置され、例えば、物体の一例である道路を走行する車両に関する情報を検出する。ミリ波レーダ、LIDARなどであるセンサでは、車両などの物体の一部分の位置および物体の速度の情報であるセンサ情報を得ることはできるが、物体全体を測定することができない。このため、複数のセンサの測定結果が得られた場合に、これらの測定結果が同一の物体のものであるのか異なる物体のものであるのかを、これらの測定結果だけで判定することは困難である。このため、物体の大きさおよび位置を示す情報であるサイズ情報を用いて、各測定結果がどの物体のどの部分を測定したものであるかを同定する必要がある。本実施の形態では、センサに、物体のどの部分が検出されやすいかを示す値であるセンサ位置指定子を付与することにより、センサの測定結果と物体との対応付けを容易にする。以下では、物体同定装置が同定する物体が、車両である場合を例に説明する。
時刻T3に補正されたセンサ情報を用いて算出されるセンサ位置指定子の位置(hosei_X3)と、時刻T3のサイズ情報を用いて算出されるセンサ位置指定子の位置との差が閾値以内と判断できれば、センサ情報とサイズ情報とは同一物体であると判断することができる。
実施の形態1ではセンサ1および道路領域ごとにセンサ位置指定子を設定するとしたが、本実施の形態では車種ごとにおいてもセンサ位置指定子を設定する。図9は、実施の形態2にかかるセンサ位置指定子の定義の例を示す図である。本実施の形態では、普通車両に加えて、普通車両とは異なる車種としてトラックのセンサ位置指定子を定義する。トラックは道路の進行方向に長い形状をしているため、普通車両で定義したセンサ位置指定子に加えて、車両の横を計測できる。しかし、形状が長いため、トラックの前方を計測したか、トラックの後方を計測したかが判別しにくい状態が発生する。そこで新たに車両の右側面を計測したが前後の区別がつかないセンサ位置指定子7と、車両の左側面を計測したが前後の区別がつかないセンサ位置指定子8を定義する。
実施の形態1ではセンサ1および道路の領域ごとにセンサ位置指定子を設定するとしたが、本実施の形態では道路の進行方向においてもセンサ位置指定子を設定する。図11は、実施の形態3にかかるセンサ位置指定子の設定の例を示す図である。図11は、道路71と道路71に対して逆向きの道路72とがある場合のセンサ位置指定子の割り当て例である。
カメラなどで道路の進行方向の情報が得られる場合がある。カメラで得られた道路の進行方向の情報と、センサ1から得られるセンサ位置指定子の情報とが一致しない場合は、カメラなどで得られた道路の進行方向をもとにセンサ位置指定子を更新しても良い。
Claims (5)
- 物体の位置および前記物体の速度を測定するセンサから前記センサにより測定されたセンサ情報を取得し、前記物体の大きさおよび位置を示すサイズ情報を送信する装置からサイズ情報を取得する取得部と、
前記物体のどの部分が検出されやすいかを示すセンサ位置指定子を前記センサ情報ごとに付与する指定子付与部と、
前記センサ位置指定子に基づいて前記サイズ情報に対応する物体と前記センサ情報に対応する物体とが同一であるかを判別する情報統合部と、
を備えることを特徴とする物体同定装置。 - 道路を複数の直線で近似して得られる各直線に対応する領域に分割し、前記センサ位置指定子は、前記領域ごとに設定されることを特徴とする請求項1に記載の物体同定装置。
- 前記センサ位置指定子は、
前記道路の進行方向ごとに設定されることを特徴とする請求項2に記載の物体同定装置。 - 前記センサ位置指定子は、
車種ごとに設定されることを特徴とする請求項1から3のいずれか1つに記載の物体同定装置。 - 前記情報統合部は、
前記道路の進行方向を用いて前記センサ位置指定子を更新することを特徴とする請求項2または3に記載の物体同定装置。
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PCT/JP2018/013851 WO2019187093A1 (ja) | 2018-03-30 | 2018-03-30 | 物体同定装置 |
US17/041,929 US20210039658A1 (en) | 2018-03-30 | 2018-03-30 | Object identification device |
CN201880091826.XA CN111971579A (zh) | 2018-03-30 | 2018-03-30 | 物体辨识装置 |
JP2020508862A JP6789440B2 (ja) | 2018-03-30 | 2018-03-30 | 物体同定装置 |
EP18911925.8A EP3754372A4 (en) | 2018-03-30 | 2018-03-30 | OBJECT IDENTIFICATION DEVICE |
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