EP3065989A2 - Dispositif de détection de la position latérale d'un piéton par rapport à la trajectoire du véhicule - Google Patents
Dispositif de détection de la position latérale d'un piéton par rapport à la trajectoire du véhiculeInfo
- Publication number
- EP3065989A2 EP3065989A2 EP14825394.1A EP14825394A EP3065989A2 EP 3065989 A2 EP3065989 A2 EP 3065989A2 EP 14825394 A EP14825394 A EP 14825394A EP 3065989 A2 EP3065989 A2 EP 3065989A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- trajectory
- obstacle
- camera
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
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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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/08—Active safety systems predicting or avoiding probable or impending collision or attempting to minimise its consequences
- B60W30/095—Predicting travel path or likelihood of collision
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
- B60K35/28—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
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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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/029—Steering assistants using warnings or proposing actions to the driver without influencing the steering system
- B62D15/0295—Steering assistants using warnings or proposing actions to the driver without influencing the steering system by overlaying a vehicle path based on present steering angle over an image without processing that image
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
- B60K2360/16—Type of output information
- B60K2360/179—Distances to obstacles or vehicles
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
- B60W2050/143—Alarm means
-
- 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
- B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
- B60W2420/40—Photo, light or radio wave sensitive means, e.g. infrared 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
- B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
- B60W2420/40—Photo, light or radio wave sensitive means, e.g. infrared sensors
- B60W2420/403—Image sensing, e.g. optical camera
-
- 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
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
-
- 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
- B60W2540/00—Input parameters relating to occupants
- B60W2540/18—Steering angle
-
- 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
Definitions
- the subject of the invention is the systems for assisting the driving of a vehicle, and more particularly the systems for assisting in the identification of obstacles or persons in the path of the vehicle. If the driver is helped in his driving decisions by the bright reflective floor markings on the roadway, he does not always have the time to analyze the nature of the objects or people on the road. other of the roadway, in particular in bad visibility situation as in time of fog or night.
- Different night vision systems are available on a motor vehicle. Such systems can detect pedestrians at night and highlight them through different human-machine interfaces (HMI).
- HMI human-machine interfaces
- the HMI can, for example, highlight the image area representing the pedestrian on a screen, or a pictogram symbolizing a pedestrian can appear on the dashboard.
- the US patent application 2009 023 11 16 of the Toyota company indicates the position of the pedestrian detected with respect to the vehicle by projecting with the aid of LEDs, on the windshield of the vehicle, which project light beams supposed to frame the image. pedestrian as seen by the driver.
- US Patent 2010 025 35 26 discloses a method of signaling an obj and or a pedestrian detected in front of the vehicle. The document proposes to indicate to the driver the direction of movement of the object and with respect to a direction transverse to the direction of the vehicle, but does not indicate the means by which the set of motion is determined.
- the aim of the invention is to propose a driving assistance system which makes it possible not only to identify the position of a possible pedestrian with respect to the windshield of the vehicle or with respect to the digitized image on a screen, but which allows to give directly to the driver an information concerning the side towards which he will have to deviate his trajectory.
- the invention proposes a device for assisting the driving of a vehicle comprising a camera and comprising an optical recognition device capable of recognizing an obstacle, in particular a pedestrian or an obstacle identified as potentially accidentogenic, in a vehicle. the field of view of the camera.
- the device includes a trajectory estimation unit configured to define a right boundary curve and a trailing edge boundary curve superimposable to the camera image, and includes a lateral discrimination unit configured to output at least two image values.
- the warning value is a function of the position of the obstacle image with respect to the right and left trajectories.
- the two distinct warning values can be two different values assigned, according to the position of the image of the obstacle, to the same variable in memory.
- the two warning values can, according to another variant of realization, correspond to two different memory variables, which can each take several values.
- the right and left limit curves can be confused, and correspond for example to the predictable trajectory of a central point of the front bumper of the vehicle.
- the right and left trajectories limits may for example correspond to traj ectoires predictable from the right and left edges of the vehicle, or may still correspond to these trajectories expanded a constant margin of safety.
- the trajectory estimation unit can determine globally each right or left limit curve as a function of the instantaneous angle of the wheels of the vehicle, or as a function of parameters making it possible to go back to this angle of the steering wheels.
- the trajectory estimation unit can determine each right or left limit curve taking into account recent variations in the angle of the wheels and extrapolating the variations of this angle of the wheels, for example to determine the portions of the trajectories most distant from the vehicle in the field of the camera.
- obstacle or pedestrian is meant here an element detected by the image analysis system, with a particular signature, for example an infra-red type and / or a form factor signature and / or a typical motion type. , and / or a proximity or intersection with an area identified as the image of the roadway.
- the forms detected as pedestrians may for example include a standing human being, a cyclist or a person in a wheelchair, a dog, a deer, a boar, a tree leaning towards the road ..., or, as other variants , on the contrary, to selectively understand standing and / or moving human beings.
- the objects or pedestrians taken into account by the device may be limited to objects or pedestrians close to the roadway or objects or pedestrians encroaching on the roadway.
- feet of the pedestrian or obstacle By feet of the pedestrian or obstacle, the following are the points of contact with the ground of the pedestrian or obstacle, or failing that, the bottom of the form detected, the "bottom” being understood according to the vertical axis of the image corresponding to the vertical lines of the filmed scene.
- the device may be connected to an estimator of the angle of the steering wheels of the vehicle, and the trajectory estimating unit may be configured to define a right limit curve and a left limit curve of trajectory according to the angle of the steering wheels.
- the steering wheel angle estimator may for example be connected to a steering wheel angle sensor of the vehicle and to a driving angle estimator. the speed of the vehicle, and use the history of these two values to calculate the angle of the wheels.
- the right limit and the left trajectory limit can be determined according to the steering wheel angle, for example for a vehicle without power steering.
- the trajectories or portions of trajectories can be calculated, or preferably mapped, for example depending on the angle of the wheels, to allow a rapid analysis of the situation when the pedestrian is detected.
- the optical axis of the camera is at the time of estimation of the warning values, in a vertical plane comprising the direction of advance of the vehicle, the optical axis being oriented in a partially plunging direction .
- a partially plunging direction here is meant a direction directed towards the ground, without being perpendicular to the plane.
- one of the coordinates of the image typically a vertical ordinate of the image, can reflect both the distance of an object and in a horizontal plane in front of the vehicle, and the height of the image. an obj and s ensibly vertical.
- the other coordinate represents a dimension s horizontally horizontal, transverse to the traj ectoire of the vehicle.
- the lateral discrimination unit may be configured to determine a right intersection point, which is calculated as an intersection of the right trajectorial boundary, with a foot line of the obstacle.
- the foot line is determined by the recognition system as bordering the image of the obstacle in a direction of the image corresponding to a horizontal axis transverse to the direction of advance of the vehicle.
- the lateral discrimination unit may further be configured to determine a left intersection point, as an intersection between the left trajectorial boundary and the same foot line of the obstacle.
- the lateral discrimination unit can for example calculate the abscissae of the two points of intersection, their ordinate being that of the foot line of the obstacle, therefore known.
- the lateral discrimination unit may be configured to compare the abscissae of the right and left intersection points, with at least one abscissa characteristic of the detected obstacle.
- the abscis characteristic of the detected obstacle can correspond for example to the abscissa of a barycenter of the image of the obstacle.
- the lateral discrimination unit takes into account both a rightmost abscissa and an extreme left abscissa of the obstacle, the right and left extremum abscissae being determined by the recognition system such as those of FIG. two vertical lines bordering the image of the obstacle. Vertical lines are lines of the camera image corresponding to the vertical lines of the camera's field of view.
- the lateral discrimination unit calculates only a central line of trajectory instead of a right and left limit of trajectory, calculates an intersection of the foot line with the center line of the line. traj ectoire, and then compares the position of this inters ection with abscissa characteristics of the detected obstacle, by checking if this abscis is at a minimum distance to the right or left of the inters ection with the central line.
- This embodiment is in fact equivalent to that comparing the characteristic abscissa with the positions of the two intersection points along the trajectory to the right and left of the vehicle.
- the lateral discrimination unit may, for example, emit a first signal if the left abscis is located to the right of the right intersection point, and emit a different signal if the right extremal abscissa is to the left of the point d left intersection.
- the lateral discrimination unit may for example emit a first signal if the right intersection point is between the abscis and its right and left extremals, and transmit a different signal if the point d The left intersection is between the right and left extreme abscissae.
- the lateral discrimination unit may emit a first signal if the left extreme abscissa is to the right of the right intersection point, at a distance less than one of the right intersection point.
- the lateral discrimination unit is configured to adapt the warning values as a function of the distance of the right intersection point with the abscissa characteristic of the obstacle, or as a function of the distance of the left intersection point with the characteristic abscissa of the obstacle.
- distance from the point to the abscissa we mean the distance from the point to the vertical line passing through this abscissa.
- the device comprises a warning interface configured to transmit, according to the values of the estimated warnings, light, tactile or audible signals, which are transmitted on a right side of the driver of the vehicle for at least one value. of the warning value, and which are issued on a driver's left side for at least one other value of the warning value.
- the warning variable corresponds for example to a single variable that can take at least three distinct values
- a signal is emitted on the left side of the driver when the variable acquires a first predefined value
- a signal is transmitted on the right side. of the driver when the variable acquires a second predefined value, and no signal is transmitted as long as the variable is equal to a third predefined value.
- warning values correspond to two variables each of which may take more values
- a signal is emitted on the left side of the driver when a first of the two variables acquires a predefined value, and is transmitted on the right side of the driver when the second of the two variables acquires the predefined value.
- predefined values of the same variable can then cause signals of different intensity on the same side of the driver
- the device comprises a camera capable of detecting images in the infrared range.
- the invention proposes a motor vehicle equipped with a driving assistance device as described above.
- the invention furthermore proposes a method of assisting the driving of a motor vehicle, in which the positions of at least two lines of paths, determined in particular according to the steering angle of the vehicle, are compared in a common reference frame.
- vehicle and at least one characteristic element of an image obtained by a camera pointing towards the front of the vehicle, and is sent to the driver of the vehicle, at least two different signals depending on whether the element is located to the right or left of the two lines of trajectory.
- FIG 1 is a schematic representation of a vehicle equipped with a driver assistance device according to the invention
- FIG. 2 is a simplified representation of the taking into account of the geometrical elements used by a driver assistance device according to the invention.
- FIG. 3 is an example of a simplified algorithm for operating a driving assistance device according to the invention.
- a vehicle 2 rolls on a roadway limited by a straight edge of roadway 7 and by a left edge of roadway 8.
- the vehicle follows a path delimited by a straight edge of trajectory 5 and by an edge left of trajectory 6.
- a pedestrian 3 is on the road, in the vicinity of the right edge of trajectory 5.
- the right and left limits of the trajectory may arbitrarily be defined for example as the trajectories of the outer casing of the trajectories of the wheels 9 of the vehicle, or may, depending on the variant embodiments, be defined as the outer casings of the trajectories of one or more points of the vehicle bodywork .
- the trajectories are defined from trajectories of points of the wheels or trajectories of points of the vehicle body, it is possible to define an enlarged secure trajectory of arbitrary width with respect to the trajectories actually described. by physical points of the vehicle. It is considered in the rest of the text, that the trajectory of the vehicle is defined in the same plane as the roadway. The trajectory is therefore most often in a substantially horizontal plane, or at least in a plane parallel to a plane defined by the axes of the vehicle wheels and passing through the points of contact with the road of the vehicle wheels.
- the vehicle comprises an electronic control unit 13, a man-machine interface 12, guide wheels 9, a camera 10, a wheel speed sensor 11, a steering wheel 14.
- the electronic control unit 13 comprises a trajectory estimation unit 24 and a lateral discrimination unit 25.
- the trajectory estimation unit 24 is connected to or comprises a map 15 and is connected either to an estimator of angle ⁇ of the vehicle wheel is directly to a steering wheel angle sensor which transmits a steering angle ⁇ value and a linear estimator of the vehicle speed, for example to a wheel speed sensor 11 of the vehicle.
- the lateral discrimination unit 25 is linked to the man-machine interface 12, to the trajectory estimation unit 24 and to an image analysis system receiving the images transmitted by the camera 10.
- the camera 10 is arranged relative to the vehicle 2 so as to be able to film towards the front of the vehicle.
- the camera 10 receives the light rays in visible light, in light infrared or in other wavelengths from a cone 4 of light beam, representing the field of view of the camera. At least a portion of the light directions of the cone 4 are diagonally oriented towards the front of the vehicle, so as to record in the image of the camera, a portion of the roadway located towards the front of the vehicle .
- the camera 10 transmits the stored image values to an electronic control unit 13.
- the electronic control unit 13 also receives information from the steering wheel 14 of the vehicle, for example in the form of a steering wheel angle data ⁇ . It receives a value of linear speed of forward v of the vehicle from, for example, the wheel speed sensor 11 of the vehicle. From the steering angle of the vehicle, the electronic control unit 13 is able to calculate the angle of the steering wheels of the vehicle relative to the longitudinal axis of the vehicle.
- the electronic control unit 13 can directly receive the information concerning the angle of the steering wheels of the vehicle instead of the steering angle ⁇ and the forward speed v.
- the electronic control unit 13 is connected to the map 15 making it possible, from the angle made by the wheels with the longitudinal axis Z of the vehicle, to construct two theoretical limits of trajectories superimposable on the image of the camera 10
- Z is called the axis corresponding to the usual vehicle advancement direction when the vehicle is traveling in a straight line
- Y is referred to as the vertical direction when the vehicle is traveling on level ground or else
- Y is the direction perpendicular to the mean plane defined by the axes of the wheels and is called X the transverse direction of the vehicle, that is to say a horizontal direction perpendicular to the usual direction of advance of the vehicle.
- FIG. 2 schematically illustrates an image captured by the camera 10 of FIG. 1, in which curves 19 and 20 representing the left and right limits 5 of the FIG. trajectory as they could project if they were visible in the image digitized by the camera 10.
- the image 16 of the camera 10 is represented in an x axis system, y.
- the direction of the x-axis, or x-axis corresponds to the direction of lines which could be visible by the camera at the front of the vehicle and which would be oriented in the transverse direction X of the vehicle.
- the y direction, or ordinate axis corresponds to the other axis of the camera image perpendicular to the x direction, and corresponds to both the projection directions of the vertical lines seen by the camera in front of the vehicle and the lines parallel to the direction of advance Z of the vehicle.
- the image 16 illustrated in FIG. 2 is an image that has already undergone a series of filtering and analysis by known image analysis methods. These filtering and analyzes make it possible in particular to determine a contour 17 of the image of the pedestrian 3 shown in FIG. 1, and possibly lines (not shown in FIG. 2) corresponding to the physical limits of the roadway, and / or lines corresponding to the markings on the roadway and on its edges.
- the pedestrian 3 of Figure 1 can be detected for example as a particular contrast element and / or form factor.
- the contour 17 of the image of the pedestrian 3 has been defined in the image 16.
- the image analysis system has also defined an outside contour of the pedestrian, here in the form of a rectangle 18, which makes it possible to define a left side xi and a right side x 2 of the contour 17 of the silhouette of the pedestrian 3.
- the left side corresponds for example to the coordinate on the left side of the rectangle 18 and the right side corresponds to the coordinate on the right side of the rectangle 18.
- the silhouette 17 of the pedestrian would be associated not with an outline 18 but for example to an ellipsoidal contour
- the left and right limit coordinates x1 and x2 can then be defined as the abscissa of the ellipse points lying furthest to the x-axis and being the most right along the x-axis.
- the lowest point of frame 18 allows define a foot line 23 of the pedestrian silhouette 17.
- the foot line 23 may for example be defined as the line parallel to the x axis and passing through the lowest point, along the y axis, from the frame 18.
- the ordinate yi of this line of feet 23 of the pedestrian 17 is here reported on the y-axis.
- two curves 19 and 20 have been reported on the filtered analyzed image 16.
- the curve 19 represents a left-hand trajectory edge of the vehicle 2 and the curve 20 represents a right-hand trajectory edge of the vehicle 2.
- the invention requires an analysis of the image detected by the camera to identify the possible pedestrian and also requires knowing the coordinates that would have in this image of the camera the right and left edges of the vehicle trajectory , which are in Figure 2 shown respectively by the curves 20 and 19.
- the curves 20 and 19 may for example be stored in the form of mapping 15 as a first function "edge R" and a second function "edge L". These functions corresponding to the curves 20 and 19 are mapped for example along the x-axis, as a function of a steering wheel angle ⁇ , and as a function of an ordinate y in the plane of FIG. 16.
- the mapping can take into account the angle of the steered wheels, according to other embodiments, the map can directly take into account a vehicle speed and a steering wheel angle ⁇ of the vehicle. According to still other embodiments, a unit for calculating the angle of the steered wheels calculates this angle ⁇ of the steered wheels from a history of speeds v of the vehicle and a history of angles ⁇ at the wheel of the vehicle.
- the lateral discrimination unit 25 analyzes whether the pedestrian silhouette 17 is to the right or left of the path delimited by the lines 20 and 20, and, depending on the position of the silhouette 17, sends to the driver of the vehicle a signal indicating a pedestrian is to the right of the vehicle's path or a pedestrian is to the left of the vehicle's path, possibly allowing the driver to deviate slightly from the path of the vehicle even before he has actually seen the pedestrian.
- the signal may be for example a light signal, a sound signal, a vibrating signal sent depending on the position of the pedestrian, either on the right side of the driver, or on the left side of the driver, thus making the interpretation of the signal more intuitive, especially if the driver does not know where his right side and his left side are.
- the discrimination unit 25 determines for example the coordinates of the intersection points-respectively 21 and 22- of the feet line 23 of the pedestrian, with the curves 19 and 20 respectively representing the left edge of the vehicle trajectory and the right trajectory edge of the vehicle.
- the discrimination unit 25 sends a signal that is transmitted to the right of the driver of the vehicle. If the silhouette 17 or its outline 18 are to the left of the point 21 or straddling this point 21, the discrimination unit 25 sends to the HMI 12 a signal that is emitted to the left of the driver of the vehicle.
- FIG. 3 illustrates an example of an operating algorithm that can be used by the discrimination unit 25 to determine whether the pedestrian 3 is to the right or to the left of the path of the vehicle 2.
- the discriminating unit 25 generates WarnR and WarnL variables which are 0 when no lateral detection signal is to be sent to the driver, which is 1 when the pedestrian is at the right at the same time. outside the trajectory, either to the left outside the trajectory of the vehicle, and which are worth 2 when the silhouette of the pedestrian straddles the left edge 19 or overlaps the right edge 20 of the trajectory.
- a WarnM variable can also be used, which is for example maintained at zero as long as the pedestrian is not in the path of the vehicle, and which is brought to the value 1 for example if the discrimination unit 25 detects that the pedestrian is in the path of the vehicle.
- an emergency strategy can be set up, for example a braking strategy.
- the discrimination unit may for example cause the transmission of a first signal on the right of the driver when the WarnR variable is equal to 1, and cause the transmission of a stronger signal always to the right of the driver when the signal WarnR is equal to 2.
- the discrimination unit 25 can cause the transmission of a signal to the driver's left when the variable WarnL is equal to 1, and cause the transmission of a stronger signal when the variable WarnL is equal to 2.
- WarnR, WarnL and WarnM variables are set to zero.
- a step 32 the analysis system of the camera 10 performs a test to decide whether a pedestrian 3 is visible in the field of the camera. If the result is negative, it returns to the initialization step 31. If the result is positive, in a step 33 the image analysis system determines the extreme positions xi, x 2 , along the x axis of the X, the silhouette of the pedestrian 17 and determines the low position yi along the y axis of the silhouette 17 of the pedestrian.
- a series of tests 34 to 38 or 34 to 37 are then conducted to determine the position of the pedestrian with respect to the path of the vehicle.
- the test 34 checks whether the silhouette 17 of the pedestrian is to the left of the line 9 representing the left edge of trajectory. If the answer is positive, the variable WarnL is brought to the value 1 at a step 41.
- step 35 we test at step 35 if the silhouette 17 is straddling the line 19. If it is the case, we bring the value WarnL to 2 at a step 42. If it is not no longer the case, at a step 36 is tested whether the silhouette 17 of the pedestrian, at its line of feet, is between the lines 19 and 20 that is to say if the pedestrian is in the path of the vehicle. If this is the case, the WarnM variable is switched to the value 1 at a step 39.
- a test 37 is made to check whether the pedestrian, at his line of feet, straddles the line 20 representing the right trajectory edge, and if this is the case, brings the WarnR variable to a step 43.
- the operating mode described in FIG. 3 is only one of the possible modes of operation according to the invention. For example, it is possible to activate a signal only when the pedestrian is completely to the left or completely to the right of the trajectory, and to activate emergency procedures as soon as the pedestrian engages in the path of the vehicle.
- the positions of the trajectory lines 19 and 20 may be chosen so as to correspond to an enlarged trajectory of the vehicle 2, that is to say to draw on the image if they are superimposed on the image of the camera a trajectory wider than that traveled by physical points of the vehicle.
- the driver assistance system allows the driver to react in case of poor visibility even if he has not had time to identify himself the pedestrian at the edge of the road.
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- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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- Traffic Control Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1360772A FR3012784B1 (fr) | 2013-11-04 | 2013-11-04 | Dispositif de detection de la position laterale d'un pieton par rapport a la trajectoire du vehicule |
| PCT/FR2014/052760 WO2015063422A2 (fr) | 2013-11-04 | 2014-10-30 | Dispositif de détection de la position latérale d'un piéton par rapport à la trajectoire du véhicule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3065989A2 true EP3065989A2 (fr) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14825394.1A Withdrawn EP3065989A2 (fr) | 2013-11-04 | 2014-10-30 | Dispositif de détection de la position latérale d'un piéton par rapport à la trajectoire du véhicule |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3065989A2 (fr) |
| CN (1) | CN105830131A (fr) |
| FR (1) | FR3012784B1 (fr) |
| WO (1) | WO2015063422A2 (fr) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE539098C2 (en) * | 2015-08-20 | 2017-04-11 | Scania Cv Ab | Method, control unit and system for path prediction |
| SE539097C2 (en) | 2015-08-20 | 2017-04-11 | Scania Cv Ab | Method, control unit and system for avoiding collision with vulnerable road users |
| US10589741B2 (en) * | 2015-08-27 | 2020-03-17 | Ford Global Technologies, Llc | Enhanced collision avoidance |
| FR3055870B1 (fr) * | 2016-09-15 | 2019-09-27 | Renault S.A.S. | Methode d'aide a la conduite, procede d'implementation d'une telle methode et dispositif d'aide a la conduite |
| GB201712004D0 (en) | 2017-07-26 | 2017-09-06 | Jaguar Land Rover Ltd | Proximity sensing systems and their control |
| CN109727188A (zh) * | 2017-10-31 | 2019-05-07 | 比亚迪股份有限公司 | 图像处理方法及其装置、安全驾驶方法及其装置 |
| CN110843910A (zh) * | 2018-08-21 | 2020-02-28 | 上海博泰悦臻网络技术服务有限公司 | 车辆拐弯控制装置及方法 |
| CN111127582B (zh) * | 2018-10-31 | 2023-06-23 | 驭势(上海)汽车科技有限公司 | 一种轨迹重合段识别方法、装置、系统及存储介质 |
| CN110113580B (zh) * | 2019-06-06 | 2024-04-09 | 天津艾思科尔科技有限公司 | 一种站台越界检测系统 |
| US11292458B2 (en) * | 2019-07-31 | 2022-04-05 | Toyota Research Institute, Inc. | Autonomous vehicle user interface with predicted trajectories |
| CN114078326B (zh) * | 2020-08-19 | 2023-04-07 | 北京万集科技股份有限公司 | 碰撞检测方法、装置、视觉传感器和存储介质 |
| CN114485511A (zh) * | 2020-10-27 | 2022-05-13 | 湖南中车智行科技有限公司 | 一种车辆限界宽度的测量方法及装置 |
| CN114446092B (zh) * | 2022-01-19 | 2022-12-27 | 无锡学院 | 一种基于三维相机组网的s型公路模拟障碍物预警方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2073185A2 (fr) * | 2007-12-20 | 2009-06-24 | Robert Bosch Gmbh | Procédé destiné à l'affichage de consignes d'alerte dans un véhicule automobile et dispositif d'affichage correspondant |
| WO2012076952A2 (fr) * | 2010-12-08 | 2012-06-14 | Toyota Jidosha Kabushiki Kaisha | Dispositif de transmission d'informations de véhicule |
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| WO2005055189A1 (fr) * | 2003-12-01 | 2005-06-16 | Volvo Technology Corporation | Affichages d'ameliorations perceptives bases sur la connaissance de la position de la tete et/ou des yeux et/ou du regard |
| JP5130638B2 (ja) * | 2006-03-22 | 2013-01-30 | 日産自動車株式会社 | 回避操作算出装置、回避制御装置、各装置を備える車両、回避操作算出方法および回避制御方法 |
| JP4856656B2 (ja) * | 2008-01-22 | 2012-01-18 | 富士重工業株式会社 | 車両検出装置 |
| JP2009217682A (ja) | 2008-03-12 | 2009-09-24 | Yazaki Corp | 車両用表示装置 |
| JP4675395B2 (ja) * | 2008-05-19 | 2011-04-20 | 三菱電機株式会社 | 車両用警報装置 |
| US8344894B2 (en) | 2009-04-02 | 2013-01-01 | GM Global Technology Operations LLC | Driver drowsy alert on full-windshield head-up display |
| JP5197679B2 (ja) * | 2010-06-09 | 2013-05-15 | 株式会社豊田中央研究所 | 対象物検出装置及びプログラム |
| JP2012040950A (ja) * | 2010-08-19 | 2012-03-01 | Koito Mfg Co Ltd | 車両用照明システム |
| JP2012212351A (ja) * | 2011-03-31 | 2012-11-01 | Mazda Motor Corp | 車両用情報提供装置 |
| FR2979299B1 (fr) * | 2011-08-31 | 2014-09-12 | Peugeot Citroen Automobiles Sa | Dispositif de traitement pour estimer une trajectoire future d'un vehicule, associee a une couleur fonction d'un niveau de risque de collision estime, pour un systeme d'aide a la conduite |
| EP2618108B1 (fr) * | 2012-01-19 | 2018-10-17 | Volvo Car Corporation | Système de conduite assistée |
-
2013
- 2013-11-04 FR FR1360772A patent/FR3012784B1/fr active Active
-
2014
- 2014-10-30 CN CN201480068803.9A patent/CN105830131A/zh active Pending
- 2014-10-30 EP EP14825394.1A patent/EP3065989A2/fr not_active Withdrawn
- 2014-10-30 WO PCT/FR2014/052760 patent/WO2015063422A2/fr not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2073185A2 (fr) * | 2007-12-20 | 2009-06-24 | Robert Bosch Gmbh | Procédé destiné à l'affichage de consignes d'alerte dans un véhicule automobile et dispositif d'affichage correspondant |
| WO2012076952A2 (fr) * | 2010-12-08 | 2012-06-14 | Toyota Jidosha Kabushiki Kaisha | Dispositif de transmission d'informations de véhicule |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2015063422A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3012784B1 (fr) | 2016-12-30 |
| WO2015063422A3 (fr) | 2015-10-29 |
| WO2015063422A2 (fr) | 2015-05-07 |
| FR3012784A1 (fr) | 2015-05-08 |
| CN105830131A (zh) | 2016-08-03 |
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