WO2011114815A1 - 車両周辺監視装置 - Google Patents
車両周辺監視装置 Download PDFInfo
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- WO2011114815A1 WO2011114815A1 PCT/JP2011/052724 JP2011052724W WO2011114815A1 WO 2011114815 A1 WO2011114815 A1 WO 2011114815A1 JP 2011052724 W JP2011052724 W JP 2011052724W WO 2011114815 A1 WO2011114815 A1 WO 2011114815A1
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- WIPO (PCT)
- Prior art keywords
- vehicle
- type determination
- monitoring device
- determination unit
- wheeled vehicle
- Prior art date
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims description 25
- 238000012544 monitoring process Methods 0.000 claims description 16
- 238000012545 processing Methods 0.000 abstract description 6
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
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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
- G01S13/02—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
- G01S13/589—Velocity or trajectory determination systems; Sense-of-movement determination systems measuring the velocity vector
-
- 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
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- 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
-
- 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
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
- G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
- G01S7/415—Identification of targets based on measurements of movement associated with the target
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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
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/20—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from infrared radiation only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
-
- 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
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9323—Alternative operation using light waves
-
- 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
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9327—Sensor installation details
- G01S2013/93271—Sensor installation details in the front of the vehicles
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V2201/00—Indexing scheme relating to image or video recognition or understanding
- G06V2201/08—Detecting or categorising vehicles
-
- 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
- G08G1/015—Detecting movement of traffic to be counted or controlled with provision for distinguishing between two or more types of vehicles, e.g. between motor-cars and cycles
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/167—Driving aids for lane monitoring, lane changing, e.g. blind spot detection
Definitions
- the present invention relates to a vehicle periphery monitoring device for recognizing an object located around a vehicle using position information of an object by a radar mounted on the vehicle and a captured image by a camera mounted on the vehicle.
- a vehicle is equipped with a radar and a camera, and the type of detected object is determined based on the distance to the object detected by the radar and the image of the object captured by the camera.
- An apparatus has been proposed (see, for example, Patent Document 1).
- the relative speed between the host vehicle and the object is calculated from the change in the distance to the object detected by the radar, and the relative speed and the vehicle speed sensor detected by the vehicle speed sensor are calculated.
- the moving speed (absolute speed) of the object is calculated based on the traveling speed.
- the object is another vehicle, a two-wheeled vehicle, a road structure. , A pedestrian, or any other object.
- an object of the present invention is to provide a vehicle periphery monitoring device that prevents the accuracy of object type determination from being lowered when the reliability of a captured image of a camera is lowered due to environmental influences.
- the present invention has been made to achieve the above object, and a radar mounted on a vehicle for detecting a relative position between an object located within a first monitoring range around the vehicle and the vehicle, and the vehicle Type determination that determines the type of an object located in the vicinity of the vehicle, based on a camera that is mounted on the camera and captures a second monitoring range that overlaps the first monitoring range, and data detected by the radar and an image captured by the camera
- the vehicle periphery monitoring apparatus provided with the part.
- a movement direction determination unit that determines whether the object is moving in the traveling direction of the vehicle or in a transverse direction orthogonal to the traveling direction from a change in detection position or detection speed of the object by the radar.
- the type determining unit has an object whose size determined from the detection position by the radar is within a first predetermined range for an object determined to be moving in the traveling direction by the moving direction determining unit.
- the first type determination process for determining that the object is a four-wheeled vehicle, and the determined object moving in the transverse direction by the movement direction determination unit from the detection position by the radar When the size of the object is within a second predetermined range, a second type determination process for determining that the object is a four-wheeled vehicle is executed.
- the movement direction (traveling direction / crossing direction) of the object detected by the radar is determined by the movement direction determination unit.
- the type determination unit is configured to determine the first type determination process or the second type determination based on the size of the object obtained from the detection position by the radar for each movement direction for the object whose movement direction is determined. Processing is performed to determine whether the object is a four-wheeled vehicle. In this case, since the determination is made without using the captured image of the camera for the four-wheeled vehicle, the object is a four-wheeled vehicle when the reliability of the captured image of the camera is lowered due to the influence of the environment. It is possible to prevent the determination accuracy of.
- the type determination unit determines whether the object is a two-wheeled vehicle according to the size and speed of the object for a size smaller than the first predetermined range.
- the type of the object is determined by classifying whether the vehicle is a two-wheeled vehicle or a bicycle, a two-wheeled vehicle or a bicycle or a pedestrian, a two-wheeled vehicle or a bicycle, a pedestrian, or a structure.
- the classification according to the size and speed of the object is performed to narrow down the type of the object to some extent, and then the captured image
- the object type can be determined by Therefore, it is possible to efficiently perform the object type determination based on the captured image, and it is possible to reduce the erroneous type determination.
- the type determination unit determines whether the object is a two-wheeled vehicle according to the size and speed of the object for a size smaller than the second predetermined range. It is a motorcycle, a bicycle, a two-wheeled motorist, a bicycle or a structure, a pedestrian, a pedestrian or a structure, and the type of the object is determined. To do.
- the classification according to the size and speed of the object is performed to narrow down the type of the object to some extent, and then the captured image
- the object type can be determined by Therefore, it is possible to efficiently perform the object type determination based on the captured image, and it is possible to reduce the erroneous type determination.
- the type determination unit for the object that is not determined to be a four-wheeled vehicle by the first determination process or the second determination process, the reflection intensity level or reflection intensity of the object detected by the radar The type of the object is determined based on the distribution of.
- the type determination unit can determine the type of the object based on the reflection intensity level or the reflection intensity distribution of the object detected by the radar. Also in this case, since the type is determined without using the captured image of the camera, the accuracy of the object type determination is reduced when the reliability of the captured image of the camera is reduced due to the influence of the environment. This can be prevented.
- the type determination unit is configured to reflect a reflector attached to the object based on a reflection intensity level of the object detected by the radar for an object that is not determined to be a four-wheeled vehicle by the second type determination process. And detecting whether the object is a two-wheeled vehicle or a bicycle based on the position or number of the reflector in the object.
- the type determination unit determines whether the object is a motorcycle or a bicycle based on the detected position or the detected number of reflectors in the object. It can be determined whether there is.
- the type determination of the motorcycle and the bicycle is performed without using the captured image of the camera, the type determination of the object is performed when the reliability of the captured image of the camera is lowered due to the influence of the environment. It is possible to prevent the accuracy of the decrease.
- the type determination unit is configured to reflect a reflector attached to the object based on the reflection intensity level of the object detected by the radar for an object that has not been determined to be a four-wheeled vehicle by the second type determination process.
- the position of the reflector in the object changes periodically, it is determined that the object is a bicycle.
- the type determination unit can determine that the object detected by the radar is a bicycle.
- the type of the object is determined. It is possible to prevent the determination accuracy from being lowered.
- the block diagram of the vehicle periphery monitoring apparatus of this invention Explanatory drawing of the attachment aspect to the vehicle of a vehicle periphery monitoring apparatus. Explanatory drawing of the classification determination of the object located in the advancing direction. Explanatory drawing of the object type determination which considered the reflection intensity of the laser radar. Explanatory drawing of discrimination
- a vehicle periphery monitoring device irradiates an object with a ECU (Electronic Control Unit) 1, an infrared camera (corresponding to the camera of the present invention) capable of detecting far infrared rays, and a laser beam.
- the laser radar 8 (corresponding to the radar of the present invention) that detects the relative position (including the relative distance) in real space between the object and the vehicle by receiving the reflected wave, and the yaw rate that detects the yaw rate of the vehicle
- a sensor 3 and a vehicle speed sensor 4 for detecting the traveling speed of the vehicle are provided.
- the ECU 1 determines the type of an object located in front of the vehicle (four-wheeled vehicle, two-wheeled vehicle, bicycle, pedestrian, etc.) from the detection data of the position of the object by the laser radar 8 and the image captured by the infrared camera 2. An alarm is output when a bicycle or pedestrian that is likely to come into contact is detected.
- the vehicle periphery monitoring apparatus is provided with the speaker 5 for performing a warning by an audio
- the laser radar 8 is a scanning type laser radar and is disposed in the front portion of the vehicle 10. Then, the laser radar 8 scans in a horizontal direction and a vertical direction within a first monitoring range set in advance (the traveling direction of the vehicle 10).
- the infrared camera 2 has a characteristic that the output level increases (the luminance increases) as the temperature of the imaged object increases.
- the infrared camera 2 is arranged in the front portion of the vehicle 10 and images a second front monitoring range (set within the first monitoring range) set in advance.
- the HUD 7 is provided so that the screen 7 a is displayed at a front position on the driver side of the front window of the vehicle 10.
- the ECU 1 converts an analog video signal output from the infrared camera 2 into digital data and imports it into an image memory, and an interface for accessing (reading and writing) the image data captured in the image memory
- the ECU 1 is a computer (an arithmetic processing circuit composed of a CPU, a memory, an input / output circuit, etc., or a microcomputer integrating these functions) that performs various arithmetic processes on image data in front of the vehicle captured in the image memory. ) And the like.
- the computer moves the object located in the vicinity of the vehicle 10 based on the detection data from the laser radar 8 (the traveling direction / crossing direction of the vehicle 10).
- the moving direction determination unit 20 that determines the type of the object
- the type determination unit 21 that determines the type of the object located around the vehicle 10 from the detection data by the laser radar 8 and the image captured by the infrared camera 2, and the detection data by the laser radar 8
- an object detection unit 22 that detects an object (object) that is highly likely to come into contact with the vehicle 10 from the captured image of the infrared camera 2.
- the moving direction determination unit 20 determines that the moving direction of the object is the moving direction of the vehicle 10 when the position of the object detected by the laser radar 8 changes in the moving direction (front-rear direction) of the vehicle. To do. Further, when the position of the object detected by the laser radar 8 changes in the vehicle transverse direction (left-right direction), the movement direction determination unit 20 is in the direction transverse to the vehicle 10. Is determined.
- the speed of the object (relative speed with respect to the vehicle 10) may be detected from the change in the position of the object detected by the laser radar 8, and the moving direction of the object may be determined from the direction of the speed.
- the object detection unit 22 reads the outputs of the vehicle speed sensor 4 and the yaw rate sensor 3 and calculates the turning angle of the vehicle 10. Then, based on the distance measurement data from the laser radar 8, the object located in the first monitoring area is tracked while the turning angle correction is performed. Further, when the object detection unit 22 determines that the object being tracked is a pedestrian or a bicycle that has a high possibility of contact with the vehicle 10 from an image captured by the infrared camera 2, the display on the HUD 7 And informing by voice output from the speaker 5.
- the type determining unit 21 calculates the relative speed of the object with respect to the vehicle 10 from the change in the position of the object detected by the laser radar 8, and from the relative speed and the traveling speed of the vehicle 10 detected by the vehicle speed sensor 4, The absolute velocity of this object is calculated.
- the type determination unit 21 recognizes the size of the object from the position detection data obtained by the laser radar 8 and determines the type of the object by the following first type determination process or second type determination process.
- the type determination unit 21 executes the first type determination process when the movement direction determination unit 20 determines that the movement direction is the traveling direction of the vehicle 10. In the first type determination process, as shown in FIG. 3, the type determination unit 21 performs the object speed (absolute speed) and the object width (the width of the object in the transverse direction with respect to the vehicle 10, the size of the object of the present invention). The type of the object is determined.
- the vertical axis is set to the moving speed (absolute speed) of the object
- the horizontal axis is set to the width of the object (width in the transverse direction of the vehicle 10)
- the corresponding type range is shown.
- A1 having a width of 1.5 m to 2.5 m (corresponding to the first predetermined range of the present invention) is assigned to a four-wheeled vehicle.
- the speed of an object can be easily classified by using the maximum speed obtained by tracking the speed of the object for a predetermined time instead of the speed at a certain moment.
- the range A2 where the speed exceeds 30km / h is a two-wheeled vehicle
- the range A3 where the speed is 8km / h to 30km / h is a two-wheeled vehicle, a bicycle
- the speed is 8km.
- the range A4 less than / h is allocated to motorcycles, bicycles and pedestrians.
- a range A5 where the speed is near 0 km / h is allocated to two-wheeled vehicles, bicycles, pedestrians, and structures.
- the type determination unit 21 determines that an object belonging to A1 is a four-wheeled vehicle, and determines that an object belonging to A2 is a two-wheeled vehicle. Further, it is determined whether or not the object belonging to A4 is a pedestrian based on the difference in reflection intensity of the laser radar 8 shown in FIG.
- FIG. 4 is obtained by adding a classification according to the intensity of the reflection intensity of the object to FIG. 3, and determines that an object having a low reflection intensity belonging to A 4 (the reflection intensity level is less than a predetermined threshold) is a pedestrian. To do.
- the type determining unit 21 detects the reflector from the distribution of the reflection intensity of the object, and determines the two-wheeled vehicle belonging to A3 or A4 and the bicycle.
- the two-wheeled vehicle 31 of FIG. 5 one reflector 31a having a high reflection intensity can be detected.
- the reflector having a high reflection intensity includes the left and right pedal parts 32b, 32c is detected.
- the type determination unit 21 can distinguish and determine a two-wheeled vehicle and a bicycle based on the difference in the position or number of the detected reflectors.
- the four-wheeled vehicle 30 can also be determined separately from the two-wheeled vehicle and the bicycle by the difference in the position (height from the ground surface) or the number of the reflectors 30a and 30b.
- the type determining unit 21 determines that this object is a two-wheeled vehicle when a reflector (a portion where the reflection intensity is equal to or higher than a predetermined level) is detected with respect to an object belonging to A3 or A4. judge.
- the type determination unit 21 determines whether or not the object belonging to A4 is a pedestrian from the characteristics of the image portion in the image captured by the infrared camera 2.
- the type determination unit 21 has characteristics of an assumed structure such as a power pole or a roadside tree and a two-wheeled vehicle from an image captured by the infrared camera 2 for an object belonging to A5 (having an image portion of a heat source such as a muffler). After performing the process of excluding those having, the bicycle and the pedestrian are discriminated based on the above-described difference in reflection intensity, the presence or absence of a reflector, and the like.
- the type determining unit 21 executes the second type determining process when the moving direction determining unit 20 determines that the moving direction is the transverse direction with respect to the vehicle 10.
- the type determination unit 21 determines the object according to the speed of the object (absolute speed) and the width of the object (width in the direction orthogonal to the traveling direction of the vehicle). Determine the type.
- the vertical axis is set to the moving speed (absolute speed) of the object
- the horizontal axis is set to the width of the object (the width in the transverse direction with respect to the vehicle 10, corresponding to the size of the object of the present invention).
- the range of the corresponding type is shown.
- First, B1 which is a range whose width exceeds 2.5 m (corresponding to the second predetermined range of the present invention), is allocated to a four-wheeled vehicle.
- Range B4 is assigned to motorcycles, bicycles and structures.
- a range B5 with a speed of 1km / h to 8km / h is assigned to a pedestrian
- a range B6 with a speed of approximately 0km / h is a pedestrian or structure. Assigned.
- the type determination unit 21 determines that an object in the range of B1 is a four-wheeled vehicle, and determines that an object in the range of B2 is a two-wheeled vehicle. Further, for an object belonging to B3, it is determined whether the object is a two-wheeled vehicle or a bicycle based on the difference in the distribution of the reflection intensity of the laser radar 8 shown in FIG.
- the type determination unit 21 is an object that is a two-wheeled vehicle or a bicycle depending on a ratio of a portion with a high reflection intensity level in the entire article or a difference in height from the ground surface of a portion with a high reflection intensity level. Can be determined.
- the type determining unit 21 determines that an object belonging to B5 is a pedestrian. Further, the type determination unit 21 excludes assumed structures such as utility poles and roadside trees from the characteristics of the image captured by the infrared camera 2 for the object belonging to B4, and then determines whether the object is a two-wheeled vehicle. Determine if it is a bicycle.
- the type determination unit 21 excludes assumed structures such as utility poles and roadside trees from the characteristics of the image captured by the infrared camera 2 for the object belonging to B6, and determines whether or not this object is a pedestrian. Determine whether.
- the width of the object is used as the size of the object.
- other elements such as the peripheral length and area of the object and the length of the diagonal line may be used.
- the infrared camera 2 is used as the imaging means of the present invention, but a normal video camera capable of detecting only visible light may be used.
- the vehicle periphery monitoring device of the present invention it is possible to prevent the object type determination accuracy from being lowered when the reliability of the image captured by the camera is lowered due to the influence of the environment. Therefore, it is useful for determining and monitoring the types of objects around the vehicle.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
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Abstract
Description
種別判定部21は、移動方向判定部20により移動方向が車両10の進行方向であると判定されたときに、第1種別判定処理を実行する。第1種別判定処理では、図3に示したように、種別判定部21は、物体の速度(絶対速度)と物体の幅(物体の車両10に対する横断方向の幅、本発明の物体の大きさに相当する)とにより、物体の種別を判定する。
次に、種別判定部21は、移動方向判定部20により移動方向が車両10に対する横断方向であると判定されたときに、第2種別判定処理を実行する。第2種別判定処理では、図7に示したように、種別判定部21は、物体の速度(絶対速度)と物体の幅(車両の進行方向と直交する方向での幅)とにより、物体の種別を判定する。
Claims (6)
- 車両に搭載されて該車両の周辺の第1監視範囲内に所在する物体と該車両との相対位置を検出するレーダーと、該車両に搭載されて該第1監視範囲と重複する第2監視範囲を撮像するカメラと、該レーダーによる検出データと該カメラによる撮像画像に基づいて、車両周辺に所在する物体の種別を判定する種別判定部とを備えた車両周辺監視装置であって、
前記レーダーによる物体の検出位置の変化又は検出速度から、該物体が前記車両の進行方向に移動しているか該進行方向と直交する横断方向に移動しているかを判定する移動方向判定部を有し、
前記種別判定部は、前記移動方向判定部により前記進行方向に移動していると判定された物体について、前記レーダーによる検出位置から求められた該物体の大きさが第1所定範囲内であるときに、該物体が四輪自動車であると判定する第1種別判定処理と、前記移動方向判定部により前記横断方向に移動している判定された物体について、前記レーダーによる検出位置から求められた該物体の大きさが前記第1所定範囲よりも小さい第2所定範囲内であるときに、該物体が四輪自動車であると判定する第2種別判定処理とを実行することを特徴とする車両周辺監視装置。 - 請求項1記載の車両周辺監視装置において、
前記種別判定部は、前記第1種別判定処理において、大きさが前記第1所定範囲よりも小さい物体について、該物体の大きさと速度に応じて、該物体が、二輪自動車であるか、二輪自動車又は自転車であるか、二輪自動車又は自転車又は歩行者あるか、二輪自動車又は自転車又は歩行者又は構造物であるか、を区分して該物体の種別を判定することを特徴とする車両周辺監視装置。 - 請求項1記載の車両周辺監視装置において、
前記種別判定部は、前記第2種別判定処理において、大きさが前記第2所定範囲よりも小さい物体について、該物体の大きさと速度に応じて、該物体が、二輪自動車であるか、二輪自動車又は自転車であるか、二輪自動者又は自転車又は構造物であるか、歩行者であるか、歩行者又は構造物であるか、を区分して該物体の種別を判定することを特徴とする車両周辺監視装置。 - 請求項1記載の車両周辺監視装置において、
前記種別判定部は、前記第1判定処理又は前記第2判定処理により、四輪自動車であると判定されなかった物体について、前記レーダーにより検出された該物体の反射強度のレベル又は反射強度の分布により、該物体の種別を判定することを特徴とする車両周辺監視装置。 - 請求項4記載の車両周辺監視装置において、
前記種別判定部は、前記第2種別判定処理により四輪自動車であると判定されなかった物体について、前記レーダーにより検出された該物体の反射強度のレベルから、該物体に装着されたリフレクターの位置又は個数を検出し、該物体における該リフレクターの位置又は個数に基づいて、該物体が二輪自動車であるか自転車であるかを判定することを特徴とする車両周辺監視装置。 - 請求項5記載の車両周辺監視装置において、
前記種別判定部は、前記第2種別判定処理により四輪自動車であると判定されなかった物体について、前記レーダーにより検出された該物体の反射強度のレベルから、該物体に装着されたリフレクターの位置を検出し、該物体における該リフレクターの位置が周期的に変化するときに、該物体が自転車であると判定することを特徴とする車両周辺監視装置。
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JP5959581B2 (ja) | 2016-08-02 |
CN102713989A (zh) | 2012-10-03 |
EP2506234A4 (en) | 2013-09-18 |
JP2014209387A (ja) | 2014-11-06 |
JPWO2011114815A1 (ja) | 2013-06-27 |
US20120293357A1 (en) | 2012-11-22 |
EP2506234A1 (en) | 2012-10-03 |
CN104251993A (zh) | 2014-12-31 |
CN104251993B (zh) | 2017-04-12 |
US8988276B2 (en) | 2015-03-24 |
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