WO2017061230A1 - 表示支援装置及び表示支援方法 - Google Patents
表示支援装置及び表示支援方法 Download PDFInfo
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- WO2017061230A1 WO2017061230A1 PCT/JP2016/076566 JP2016076566W WO2017061230A1 WO 2017061230 A1 WO2017061230 A1 WO 2017061230A1 JP 2016076566 W JP2016076566 W JP 2016076566W WO 2017061230 A1 WO2017061230 A1 WO 2017061230A1
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- virtual viewpoint
- lane
- vehicle
- viewpoint position
- steering angle
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Images
Classifications
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- 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
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- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
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- B60R1/20—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/22—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle
- B60R1/23—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle with a predetermined field of view
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60R1/20—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
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- 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
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- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B60W2050/146—Display means
Definitions
- the present invention relates to a display support apparatus and a display support method.
- Patent Document 1 displays a composite image on a display to notify the driver of the surrounding situation of the host vehicle (for example, a subsequent vehicle).
- Patent Document 1 when the virtual viewpoint is set behind the host vehicle, the position of the virtual viewpoint is moved by the driver's steering. And if the position of a virtual viewpoint moves, the succeeding vehicle displayed on the synthetic
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a display support that allows the driver to grasp the surrounding situation of the host vehicle by controlling the position of the virtual viewpoint based on steering.
- An apparatus and a display support method are provided.
- the display support apparatus detects the steering angle of the vehicle and changes the position of the virtual viewpoint based on the detected steering angle.
- the driver can grasp the surrounding situation of the own vehicle.
- FIG. 1 is a configuration diagram of a display support apparatus according to the first embodiment of the present invention.
- FIG. 2A is a diagram for explaining a virtual viewpoint position when traveling at a reference speed.
- FIG. 2B is a diagram illustrating the virtual viewpoint position when traveling at a speed higher than the reference speed.
- FIG. 2C illustrates the virtual viewpoint position when traveling at a lower speed than the reference speed.
- FIGS. 3A and 3B are diagrams for explaining the virtual viewpoint position changed by the display support apparatus according to the first embodiment of the present invention.
- 4 (a) to 4 (g) are diagrams illustrating images displayed on the display by the display support apparatus according to the first embodiment of the present invention.
- FIG. 5 is a flowchart for explaining an operation example of the display support apparatus according to the first embodiment of the present invention.
- FIG. 6 is a diagram for explaining the virtual viewpoint position changed by the display support apparatus according to the second embodiment of the present invention.
- FIG. 7 is another diagram illustrating the virtual viewpoint position changed by the display support apparatus according to the second embodiment of the present invention.
- FIG. 8 is still another diagram illustrating the virtual viewpoint position changed by the display support apparatus according to the second embodiment of the present invention.
- FIG. 9 is a flowchart for explaining an operation example of the display support apparatus according to the second embodiment of the present invention.
- FIG. 10 is a configuration diagram of a display support apparatus according to the third embodiment of the present invention.
- FIGS. 11A and 11B are diagrams for explaining the virtual viewpoint position changed by the display support apparatus according to the third embodiment of the present invention.
- FIG. 12 is a diagram illustrating an image displayed on the display by the display support apparatus according to the third embodiment of the present invention.
- FIG. 13 is a flowchart for explaining an operation example of the display support apparatus according to the third embodiment of the present invention.
- FIGS. 14A to 14C are diagrams illustrating display examples displayed on the display by the display support apparatus according to another embodiment of the present invention.
- a display support apparatus 1 according to the first embodiment will be described with reference to FIG.
- the display support apparatus 1 includes a front camera 10, a right camera 11, a left camera 12, a rear camera 13, a navigation device 14, a steering angle sensor 15, a vehicle speed sensor 16, and a blinker.
- a switch 17, a controller 30, and a display 50 are provided.
- the front camera 10, the right camera 11, the left camera 12, and the rear camera 13 are cameras each having an image sensor such as a charge-coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). It is installed at a position where the front, right side, left side, and rear of the vehicle can be photographed. These cameras output the captured image to the controller 30.
- CCD charge-coupled device
- CMOS complementary metal oxide semiconductor
- the four cameras of the front camera 10, the right camera 11, the left camera 12, and the rear camera 13 are referred to as “front camera 10 etc.”.
- the navigation device 14 includes a GPS receiver and a map database, and calculates a travel route to the destination set by the occupant using the vehicle position detected by the GPS receiver and the map database.
- the navigation device 14 outputs the calculated travel route to the controller 30.
- the map database may be stored on the server instead of the navigation device 14. When the map database is stored on the server, the navigation device 14 can acquire map information at any time by communication.
- the steering angle sensor 15 detects the steering angle of the host vehicle, and outputs the detected steering angle to the controller 30.
- the vehicle speed sensor 16 detects the speed of the host vehicle from the number of rotations of the wheels, and outputs the detected speed to the controller 30.
- the blinker switch 17 is installed near the steering wheel and detects the turning direction when the host vehicle turns right or left or changes lanes. The blinker switch 17 outputs the detected turning direction to the controller 30.
- the controller 30 is a device that generates a composite image to be displayed on the display 50 using a camera image, a rudder angle, and the like. is there. When the controller 30 grasps this functionally, the controller 30 classifies it into a lane detection unit 31, a virtual viewpoint position calculation unit 32, a viewpoint conversion unit 33, a storage unit 34, a viewpoint switching unit 35, and a synthesis unit 36. can do.
- the lane detection unit 31 acquires information from an image captured by the front camera 10 or the like or the navigation device 14 and detects a lane on a road including a traveling lane in which the host vehicle is traveling (hereinafter simply referred to as the host lane). .
- the lane detector 31 also detects lane boundaries and lane markings such as roadway outer lines that distinguish areas other than lanes and lanes.
- the virtual viewpoint position calculation unit 32 uses the steering angle and vehicle speed acquired from the steering angle sensor 15 and the vehicle speed sensor 16 to calculate the position of the virtual viewpoint over which the host vehicle is looked down from above (hereinafter simply referred to as the virtual viewpoint position). . More specifically, the virtual viewpoint position calculation unit 32 calculates the virtual viewpoint position with respect to the traveling direction of the host vehicle using the vehicle speed, and calculates the virtual viewpoint position with respect to the vehicle width direction of the host vehicle using the steering angle. In the first embodiment, the virtual viewpoint position is described as being set on the central axis with respect to the vehicle width direction of the host vehicle, but the virtual viewpoint position is not limited to this.
- the viewpoint conversion unit 33 converts an image taken by the front camera 10 or the like using the conversion map stored in the storage unit 34 into a bird's-eye view image looking down from the virtual viewpoint.
- the storage unit 34 stores a conversion map used by the viewpoint conversion unit 33, an icon used by the synthesis unit 36, and the like.
- the viewpoint switching unit 35 (changing means) determines whether or not the virtual viewpoint position calculated by the virtual viewpoint position calculating unit 32 protrudes from the own lane. Then, the viewpoint switching unit 35 changes the virtual viewpoint position based on the determination result. Detailed operation of the viewpoint switching unit 35 will be described later.
- the synthesizing unit 36 (processing means) generates a synthesized image by superimposing an icon or the like stored in the storage unit 34 on the overhead view image converted by the viewpoint converting unit 33. Then, the synthesis unit 36 outputs the generated synthesized image to the display 50.
- the display 50 is, for example, a liquid crystal display mounted on an instrument panel or a liquid crystal display used for the navigation device 14, and displays various information to the passenger.
- the virtual viewpoint position calculation unit 32 sets the virtual viewpoint position C1 from the host vehicle to the horizontal rear direction by 50 m and from the ground to the vertical upward direction. Calculated as a 25m position. Further, the virtual viewpoint position calculation unit 32 sets the angle formed by the direction of the line of sight when looking down at the host vehicle from the virtual viewpoint position C1 (dotted line in FIG. 2A) and the horizontal plane at the height of the virtual viewpoint position C1. Set to degrees.
- the virtual viewpoint position calculation unit 32 compares the virtual viewpoint position C2 with the virtual viewpoint position C1 and is located farther backward from the host vehicle and the ground. To calculate as a low position. Specifically, as shown in FIG. 2B, the virtual viewpoint position calculation unit 32 calculates the virtual viewpoint position C2 as a position 70 m in the horizontal rear direction from the host vehicle and 15 m in the vertical upward direction from the ground.
- the virtual viewpoint position calculation unit 32 sets the angle formed by the direction of the line of sight when looking down at the host vehicle from the virtual viewpoint position C2 (dotted line in FIG. 2B) and the horizontal plane at the height of the virtual viewpoint position C2. Set to degrees.
- the virtual viewpoint position C2 shown in FIG. 2 (b) the bird's-eye view image looking down from the virtual viewpoint position C2 is behind the host vehicle in a wider range compared to FIG. 2 (a). Can be captured.
- the driver can quickly know the presence of the following vehicle. This makes it easier for the driver to join and change lanes.
- the virtual viewpoint position calculation unit 32 compares the virtual viewpoint position C3 with the virtual viewpoint position C1 and is located at a position closer to the rear than the host vehicle. To calculate as a high position. Specifically, as shown in FIG. 2C, the virtual viewpoint position calculation unit 32 calculates the virtual viewpoint position C3 as a position 30 m in the horizontal rearward direction from the host vehicle and 30 m in the vertical upward direction from the ground.
- the virtual viewpoint position calculation unit 32 sets the angle formed by the direction of the line of sight when looking down at the host vehicle from the virtual viewpoint position C3 (dotted line in FIG. 2C) and the horizontal plane at the height of the virtual viewpoint position C3. Set to degrees.
- the virtual viewpoint position C3 shown in FIG. 2C the overhead view image looking down from the virtual viewpoint position C3 shows the degree of change around the host vehicle as compared with FIG. It becomes easy to catch.
- the driver can easily confirm the change in the inter-vehicle distance with the succeeding vehicle. This makes it easier for the driver to merge and change lanes.
- the virtual viewpoint position is described from the viewpoint of whether it is faster or slower than this reference speed with respect to one reference speed. Is not limited to one.
- a plurality of reference speeds may be set (reference speed 1, reference speed 2, reference speed 1> reference speed 2, etc.), the vehicle speed may be subdivided and associated with the reference speed, and the virtual viewpoint position may be calculated.
- the travel scene shown in FIG. 3A is a scene in which the host vehicle traveling in the left lane on the two-lane road changes the lane to the right lane.
- P1 to P7 shown in FIG. 3A are the vehicle positions.
- P1 'to P7' shown in FIG. 3A are virtual viewpoint positions corresponding to the own vehicle positions P1 to P7, respectively.
- the distance from the own vehicle to the virtual viewpoint position in the traveling direction of the own vehicle (hereinafter simply referred to as the own vehicle virtual viewpoint distance) is set according to the speed of the own vehicle.
- An arrow extending from each virtual viewpoint position indicates the direction of the line of sight of each virtual viewpoint.
- the virtual viewpoint position exists on the central axis with respect to the vehicle width direction of the host vehicle. For this reason, when the driver turns the steering wheel clockwise to change the lane to the right lane, the host vehicle moves from the host vehicle position P1 to the host vehicle position P2. At this time, the virtual viewpoint position P1 'moves to the virtual viewpoint position P2'. Thus, the virtual viewpoint position moves according to the driver's steering, that is, the steering angle. More specifically, at the vehicle position P1, the steering wheel is in the neutral position, and the steering angle is 0 degree. When the driver turns the steering wheel clockwise from the vehicle position P1, the steering angle increases. The virtual viewpoint position calculation unit 32 calculates the virtual viewpoint position P2 'according to the increased steering angle. In this way, the state in which the virtual viewpoint position moves in conjunction with the rudder angle is expressed as the vehicle fixed below.
- the virtual viewpoint position P3 ′′ protrudes from the own lane.
- the virtual viewpoint position is the own lane.
- the viewpoint switching unit 35 changes the virtual viewpoint position to the right lane to which the lane is changed when the virtual viewpoint position P3 ′′ protrudes from the own lane. . Specifically, as shown in FIG.
- the viewpoint switching unit 35 changes the virtual viewpoint position from the virtual viewpoint position P3 ′′ to the virtual viewpoint position P3 ′. As a result, the viewpoint switching unit 35 looks down from the virtual viewpoint position P3 ′.
- the bird's-eye view image can capture more information behind the host vehicle than the bird's-eye view image looking down from the virtual viewpoint position P3 ′′.
- the virtual viewpoint position when the host vehicle is traveling on a straight road, the virtual viewpoint position can be uniquely determined from the steering angle and the host vehicle virtual viewpoint distance. For example, as the own vehicle virtual viewpoint distance increases with respect to a certain steering angle, the virtual viewpoint position moves away from the own lane. In addition, the virtual viewpoint position is further away from the own lane as the rudder angle is larger than a certain own virtual viewpoint distance. Thus, the steering angle and the own vehicle virtual viewpoint distance have a correlation with the distance from the own lane to the virtual viewpoint position.
- the viewpoint switching unit 35 includes a map showing the relationship between the steering angle obtained in advance through experiments and simulations and the distance from the own lane to the virtual viewpoint position, and the own vehicle virtual viewpoint distance and the distance from the own lane to the virtual viewpoint position. It is possible to determine whether or not the virtual viewpoint position protrudes from the own lane with reference to the map indicating the relationship between The map can be stored in the storage unit 34.
- the virtual viewpoint position moves like the virtual viewpoint positions P4 'and P5'. That is, after the viewpoint switching unit 35 changes the virtual viewpoint position to the virtual viewpoint position P3 ′, the virtual viewpoint position remains fixed in the vehicle width direction without being linked to the steering angle until the host vehicle crosses the lane. The vehicle moves on the right lane of the lane change destination while maintaining the virtual viewpoint distance. In this way, a state in which the virtual viewpoint position moves on the lane while being fixed in the vehicle width direction without being linked to the steering angle is expressed as ground fixation below. The reason why the virtual viewpoint position is fixed to the ground until the host vehicle crosses the lane is that the overhead image obtains a lot of information behind the host vehicle.
- the viewpoint switching unit 35 switches the virtual viewpoint position from the ground fixed to the host vehicle fixed.
- the virtual viewpoint position moves from the virtual viewpoint position P5 'to the virtual viewpoint position P6'.
- the steering angle becomes approximately 0 degrees as shown by the own vehicle position P7
- the virtual viewpoint position moves from the virtual viewpoint position P6 'to the virtual viewpoint position P7'.
- FIG. 3A when the virtual viewpoint position protrudes from the own lane, the virtual viewpoint position is changed to the lane to which the lane is changed.
- the present invention is not limited to this.
- the virtual viewpoint position may be changed not on the lane to which the lane is changed but on the lane boundary.
- FIGS. 4A to 4G show examples of overhead images displayed on the display 50 when the virtual viewpoint position is changed as shown in FIG.
- FIGS. 4A to 4G correspond to the overhead images viewed from the virtual viewpoint positions P1 'to P7' shown in FIG. 3B, respectively.
- the virtual viewpoint position is fixed to the own vehicle, that is, moves in conjunction with the steering angle until the virtual viewpoint position protrudes from the own lane.
- FIGS. 4C to 4E when the virtual viewpoint position protrudes from the own lane, the virtual viewpoint position is fixed to the ground until the own vehicle crosses the lane, and the lane boundary line is at the center of the overhead image. Is displayed. Thereby, the back of the own vehicle can be displayed in a wide range. When there is a following vehicle in the right lane, the driver can quickly know the presence of the following vehicle.
- the viewpoint switching unit 35 switches the virtual viewpoint position from the ground fixation to the own vehicle fixation.
- the present invention is not limited to this.
- the virtual viewpoint position may be changed to the right lane when the virtual viewpoint position protrudes from the center lane to the left lane.
- the virtual viewpoint position may be changed not on the right lane but on the lane boundary line between the center lane and the right lane.
- the viewpoint switching unit 35 can determine whether or not the host vehicle straddles the lane using the steering angle.
- the rudder angle in the lane change changes by one cycle in a sine wave shape by turning the steering wheel back and forth. For example, when the lane is changed to the right lane, the rudder angle gradually increases as the steering wheel is increased and takes a certain positive peak. After taking a positive peak, the steering angle decreases toward the neutral position by turning the steering wheel back. The rudder angle decreases beyond the neutral position, increases after exceeding the negative peak, and finally reaches 0 degree.
- the steering angle is positive when the steering wheel is rotated clockwise, and the steering angle is negative when the steering wheel is rotated counterclockwise.
- the viewpoint switching unit 35 determines that the host vehicle straddles the lane at the timing when the rudder angle switches from decrease to increase. Can do.
- the viewpoint switching unit 35 may determine that the host vehicle has straddled the lane at the timing when the rudder angle finally becomes 0 degrees. Further, the viewpoint switching unit 35 may determine whether or not the host vehicle straddles a lane using an image of the front camera 10 or the like.
- step S101 the controller 30 determines whether or not the blinker switch 17 is ON. If the winker switch is on (Yes in step S101), the process proceeds to step S102. On the other hand, if the winker switch is not on (No in step S101), the controller 30 stands by.
- step S102 the controller 30 acquires the vehicle speed from the vehicle speed sensor 16.
- step S103 the virtual viewpoint position calculation unit 32 calculates a virtual viewpoint position with respect to the traveling direction of the host vehicle based on the acquired vehicle speed.
- step S104 the controller 30 acquires the traveling environment from an image such as the front camera 10 or the navigation device 14. Specifically, the controller 30 determines whether the road on which the host vehicle is traveling is a straight line or a curve, and acquires the presence / absence of a subsequent vehicle or a preceding vehicle.
- the road on which the host vehicle travels is determined to be a straight line. A case where it is determined that the road on which the vehicle travels is a curve will be described in the second embodiment.
- step S105 the virtual viewpoint position calculation unit 32 acquires the steering angle from the steering angle sensor.
- step S106 the virtual viewpoint position calculation unit 32 calculates a virtual viewpoint position with respect to the vehicle width direction based on the acquired steering angle.
- step S107 the viewpoint switching unit 35 determines whether or not the virtual viewpoint position calculated in step S106 protrudes from the own lane.
- the process proceeds to step S108.
- the process returns to step S105.
- step S108 the viewpoint switching unit 35 changes the virtual viewpoint position to the lane to be changed or to the lane boundary. That is, the viewpoint switching unit 35 switches the virtual viewpoint position from the own vehicle fixing to the ground fixing.
- step S109 the viewpoint switching unit 35 determines whether or not the host vehicle straddles the lane.
- the viewpoint switching unit 35 switches the virtual viewpoint position from the ground fixation to the own vehicle fixation.
- the process waits.
- the display support apparatus 1 determines whether or not the virtual viewpoint position is out of the own lane based on the detected steering angle. When the display support apparatus 1 determines that the virtual viewpoint position has protruded from the own lane, the display assistance apparatus 1 changes the virtual viewpoint position. By controlling the virtual viewpoint position based on the steering in this way, the driver can grasp the surrounding situation of the host vehicle.
- the display support apparatus 1 determines that the virtual viewpoint position protrudes from the own lane, the display support apparatus 1 changes the virtual viewpoint position to the adjacent lane side adjacent to the own lane.
- the virtual viewpoint position is set on the adjacent lane adjacent to the own lane or on the lane boundary line between the own lane and the adjacent lane. change.
- the bird's-eye view image looked down from the virtual viewpoint can include the vehicle rear side in a wide range.
- the virtual viewpoint position moves in conjunction with steering.
- steering occurs like a lane change
- the scenery around the host vehicle displayed on the display 50 shakes greatly, which may cause motion sickness.
- the display support apparatus 1 determines that the virtual viewpoint position is out of the own lane, the virtual viewpoint position is on the lane that is the lane change destination from the own lane or the lane between the own lane and the lane that is the lane change destination. Change the virtual viewpoint on the boundary. In this way, the display support apparatus 1 can suppress the shaking of the scenery around the vehicle displayed in the display 50 by switching the virtual viewpoint position from the vehicle fixed to the ground fixed, and can reduce image sickness. .
- the virtual viewpoint position changing process based on the steering angle may be started.
- the fact that the driver turns on the blinker switch 17 on the right side expresses the intention to change the lane to the right lane. Therefore, by starting the virtual viewpoint position changing process based on the steering angle after the signal of the blinker switch 17 is input, it is possible to prevent a situation in which the virtual viewpoint position is changed due to a malfunction of the driver's steering wheel. it can.
- the display support apparatus 1 may fix the virtual viewpoint position to the ground and fix it to the own lane. In this case, after the host vehicle changes the lane, the display support apparatus 1 moves the virtual viewpoint position from the lane before the lane change to the lane to which the lane is changed.
- the timing for moving the virtual viewpoint position can be set as follows. When the virtual viewpoint position is fixed to the own lane, as shown in FIG. 3A, the virtual viewpoint position is fixed to the virtual viewpoint position P1 'when the host vehicle is traveling in the left lane. At this time, the rudder angle is neutral. When the host vehicle changes to the right lane, the rudder angle changes to a sine wave as described above, and finally the rudder angle returns to neutral as shown by the host vehicle position P7 in FIG.
- the viewpoint switching unit 35 can detect a change in the steering angle, and can switch the virtual viewpoint position after a predetermined time has elapsed since the steering angle finally returned to neutral.
- the reason for providing the predetermined time is that there is an individual difference in the timing at which the steering wheel is finally returned to neutral when changing the lane. In this way, after changing the lane, the host vehicle moves on the display 50 by switching the virtual viewpoint position after a predetermined time has elapsed since the rudder angle finally returned to neutral. This makes it easier for the driver to check the vehicle on the display 50.
- the display support apparatus 1 according to the second embodiment has the same configuration as that of the first embodiment described above, and the driving scene is different.
- the operation on a straight road has been described as a traveling scene.
- the operation on a curve will be described.
- the traveling scene shown in FIG. 6 is a scene in which the host vehicle traveling in the right lane (outer lane) changes to the left lane (inner lane) on a two-lane road curve.
- P1 to P3 shown in FIG. 6 are own vehicle positions.
- P1 ′ to P3 ′ shown in FIG. 6 are virtual viewpoint positions corresponding to the own vehicle positions P1 to P3, respectively.
- R1 to R3 shown in FIG. 6 is a following vehicle.
- the viewpoint switching unit 35 changes the virtual viewpoint position P1 ′ to the virtual viewpoint position P1 ′′. Specifically, the viewpoint switching unit 35 positions the virtual viewpoint position P1 ′′ inside the curve from the virtual viewpoint position P1 ′. Thus, the virtual viewpoint position P1 ′ is changed to the virtual viewpoint position P1 ′′ so that the distance between the virtual viewpoint position P1 ′ and the virtual viewpoint position P1 ′′ is one lane width.
- the steering wheel is fixed at a predetermined rudder angle during driving on the curve.
- a predetermined rudder angle for driving along a curve is referred to as a fixed rudder angle.
- the amount of change in the steering angle with respect to the fixed steering angle is almost zero.
- the steering wheel is further increased in the curve turning direction from the fixed steering angle. That is, the amount of change in the steering angle with respect to the fixed steering angle increases in the curve turning direction.
- the viewpoint switching unit 35 acquires the amount of change in the steering angle, and compares the acquired amount of change with a preset threshold value. When the viewpoint switching unit 35 determines that the acquired change amount is larger than the threshold, the viewpoint switching unit 35 moves the virtual viewpoint position P1 ′ to the inside of the curve by one lane width, and changes the virtual viewpoint position P1 ′′.
- the visual field range R1 ′ at the position P1 ′′ can include the following vehicle V2.
- the virtual viewpoint position remains in the offset state from the virtual viewpoint position P1 "to the virtual viewpoint position P2. Move to ”.
- the visual field range R2 'of the virtual viewpoint position P2 is likely to include the subsequent vehicle V2 as compared to the visual field range R2 of the virtual viewpoint position P2'.
- the viewpoint switching unit 35 releases the offset.
- the virtual viewpoint at the host vehicle position P3 becomes the virtual viewpoint position P3 '. Note that a method similar to the method described in the first embodiment can be applied to determine whether or not the host vehicle straddles a lane.
- the virtual viewpoint position is moved by one lane width, but the moving distance is not limited to this and can be changed as appropriate.
- the angle and threshold value of the fixed rudder angle can be obtained by experiments and simulations using data relating to the curve shape of the road.
- the virtual viewpoint position is moved based on the change amount of the steering angle with respect to the fixed steering angle, but the present invention is not limited to this.
- the viewing angle of the virtual viewpoint at the virtual viewpoint position P1 ' may be tilted to the inside of the curve based on the amount of change in the steering angle with respect to the fixed steering angle.
- the inclination angle can be set such that the tangent line L1 extending from the virtual viewpoint position P1 'is in contact with the roadway outer line inside the curve.
- the visual field range R1 'of the virtual viewpoint position P1' can include the following vehicle V2.
- the magnitude of the tilt angle can be set such that the tangent line L2 extending from the virtual viewpoint position P2' touches the roadway outer line inside the curve.
- the visual field range R2 'of the virtual viewpoint position P2' is likely to include the subsequent vehicle V2 as compared to the visual field range R2 of the virtual viewpoint position P2 '.
- the travel scene shown in FIG. 8 is a scene in which the host vehicle traveling in the left lane (inner lane) changes to the right lane (outer lane) on a two-lane road having a curve.
- the subsequent vehicle V2 since the subsequent vehicle V2 is included in the visual field range R1 of the virtual viewpoint position P1 ', it is not necessary to change the virtual viewpoint position.
- the viewpoint switching unit 35 keeps the virtual viewpoint position fixed when the lane is changed from the inner lane to the outer lane in the curve.
- the viewpoint switching unit 35 changes from the inner lane to the outer lane. It can be determined that the lane will be changed.
- steps S201 to S203 and step S205 are the same as the operations in steps S101 to 103 and step S105 in FIG.
- step S204 the controller 30 acquires the traveling environment from the image of the front camera 10 or the like or the navigation device 14. Specifically, the controller 30 determines whether the road on which the host vehicle is traveling is a straight line or a curve, and acquires the presence / absence of a subsequent vehicle or a preceding vehicle.
- the road on which the host vehicle travels is a curve.
- step S206 the viewpoint switching unit 35 determines whether the steering angle has changed in the curve turning direction with respect to the fixed steering angle. If the rudder angle has changed in the curve turning direction (Yes in step S206), the process proceeds to step S207. On the other hand, the steering angle has changed in the direction opposite to the curve turning direction (No in step S206), and the process proceeds to step S210.
- step S207 the viewpoint switching unit 35 determines whether or not the change amount of the steering angle with respect to the fixed steering angle is larger than the threshold value. If the amount of change in the steering angle is greater than the threshold (Yes in step S207), the process proceeds to step S208. On the other hand, when the amount of change in the steering angle is equal to or less than the threshold (No in step S207), the process returns to step S205.
- step S208 the viewpoint switching unit 35 moves the virtual viewpoint position by one lane width to the inside of the curve, or tilts the viewing angle of the virtual viewpoint to the inside of the curve.
- step S209 the viewpoint switching unit 35 determines whether or not the host vehicle straddles the lane.
- the viewpoint switching unit 35 cancels the offset of the virtual viewpoint position.
- the process waits.
- step S210 the viewpoint switching unit 35 keeps the virtual viewpoint position fixed to the own vehicle.
- the display support device 1 moves the virtual viewpoint position by one lane width to the inside of the curve or changes the viewing angle of the virtual viewpoint when the vehicle changes lanes from the outer lane of the curve to the inner lane of the curve while the host vehicle is traveling on the curve. Tilt the inside of the curve.
- the bird's-eye view image looked down from the virtual viewpoint can include the vehicle rear side in a wide range.
- the driver can quickly know the presence of the following vehicle on the display 50, and it becomes easy to perform merging and lane change.
- the display support apparatus 1 can suppress the shaking of the scenery around the own vehicle displayed in the display 50 by moving the virtual viewpoint position to the inside of the curve, and can reduce motion sickness.
- the virtual viewpoint position changing process based on the steering angle may be started. As a result, it is possible to prevent a situation in which the virtual viewpoint position is changed due to a malfunction of the driver's steering wheel.
- the virtual viewpoint position may be changed using the R value of the curve stored in the map database of the navigation device 14.
- the curve becomes tighter.
- the driver increases the steering wheel in the curve turning direction, but this increase corresponds to the curve and can be determined not to change the lane. Therefore, the viewpoint switching unit 35 can compare the R value of the curve and the steering angle, and change the virtual viewpoint position according to the comparison result. For example, if the R value of the curve and the rudder angle are the same, the driver can determine that the driver will proceed along the road, so the viewpoint switching unit 35 keeps the virtual viewpoint position fixed to the own vehicle.
- the display assistance apparatus 1 can display the surrounding condition which a driver
- the third embodiment differs from the first embodiment in that the display support apparatus 2 includes a laser range finder 18 as shown in FIG.
- the description of the same components as those in the first embodiment will be omitted by citing the reference numerals, and the following description will focus on the differences.
- the laser range finder 18 (periphery detection means) is a device that detects the surrounding environment of the host vehicle, and detects obstacles (pedestrians, bicycles, two-wheeled vehicles, other vehicles, etc.) existing around the host vehicle (for example, within 30 m). To detect. More specifically, the laser range finder 18 scans the laser light within a certain angle range, receives the reflected light at that time, and detects the time difference between the laser emission time and the light receiving time of the reflected light. Detects the distance and angle between the object and the obstacle. The laser range finder 18 outputs the detected information to the controller 30.
- obstacles for example, within 30 m.
- the narrow road S shown in FIG. 11A indicates a narrow path.
- the narrow road S refers to a road that is narrower than a normal road width due to the presence of obstacles such as the utility pole M and the parked vehicle V3.
- the narrow range S is detected by the laser range finder 18.
- the narrow road S exists 20 meters ahead of the host vehicle and the host vehicle faces the center of the narrow path S at the host vehicle position P1, it looks down from the virtual viewpoint position P1 ′.
- the center of the overhead view image and the center of the narrow road S overlap. Thereby, since the narrow road S is displayed at the center of the display 50, the driver can quickly notice the presence of the narrow road S on the display 50.
- the viewpoint switching unit 35 changes the virtual viewpoint position from the virtual viewpoint position P1 ′ to the virtual viewpoint position P1 ′′ as shown in FIG. That is, the viewpoint switching unit 35 changes the virtual viewpoint position from the fixed vehicle position to the fixed ground position so that the virtual viewpoint position becomes a position facing the center of the narrow road S.
- the virtual viewpoint position P1 The center of the bird's-eye view image looking down from “and the center of the narrow road S overlap.
- step S304 the controller 30 determines from the output of the laser range finder 18 whether or not the narrow road S exists in front of the host vehicle. When the narrow path S exists (Yes in step S304), the process proceeds to step S305. On the other hand, when the narrow path S does not exist (No in step S304), the process waits.
- step S305 the controller 30 detects the distance from the output of the laser range finder 18 to the narrow path S.
- step S306 the controller 30 determines whether or not the distance to the narrow path S is equal to or less than a predetermined value.
- the predetermined value is 20 m, for example. If the distance to the narrow path S is equal to or smaller than the predetermined value (Yes in step S306), the process proceeds to step S307. On the other hand, when the distance to the narrow path S is larger than the predetermined value (No in step S307), the process waits.
- the reason for determining whether or not the distance to the narrow road S is equal to or less than a predetermined value is that if the narrow road S exists at a distance away from the predetermined value, the driver is still not notified of the presence of the narrow road S. Because it is early.
- step S307 the controller 30 determines whether or not the virtual viewpoint position is directly facing the center of the narrow path S. If the virtual viewpoint position does not face the center of the narrow road S (No in step S307), the process proceeds to step S308. On the other hand, when the virtual viewpoint position is directly facing the center of the narrow path S (Yes in step S307), the process proceeds to step S309.
- step S308 the viewpoint switching unit 35 changes the virtual viewpoint position so as to face the center of the narrow path S.
- step S309 the viewpoint switching unit 35 keeps the virtual viewpoint position fixed to the own vehicle.
- the display support apparatus 2 determines whether or not the virtual viewpoint position is directly facing the center of the narrow road S. Then, when the virtual viewpoint position does not face the center of the narrow path S, the display support apparatus 2 changes the virtual viewpoint position so that the virtual viewpoint position faces the center of the narrow path S. On the other hand, when the virtual viewpoint position is directly facing the center of the narrow road S, the display support apparatus 2 keeps the virtual viewpoint position fixed to the own vehicle. Thereby, since the narrow road S is displayed at the center of the display 50, the driver can quickly notice the presence of the narrow road S on the display 50.
- the virtual viewpoint position is changed based on the steering angle.
- the virtual viewpoint position may be changed using the steering angle.
- the display support apparatus 2 can set a dead zone that ignores the change in the steering angle, and can determine whether or not the steering angle is within the dead zone. If the rudder angle is within the dead zone, it is considered that the driver finely adjusts the steering wheel and passes through the narrow road S. Therefore, the display support apparatus 2 causes the virtual viewpoint position to face the center of the narrow road S.
- the display support device 2 changes the virtual viewpoint position from the own lane to the lane to which the lane is changed or from the own lane.
- the virtual viewpoint position is changed on the lane boundary line between the lane and the lane to be changed.
- the display assistance apparatus 2 can display the surrounding condition which a driver
- the dead zone can be obtained through experiments and simulations.
- the host vehicle V1 displayed on the display 50 is displayed with respect to the host vehicle V1.
- the upper end line L3 indicating the upper end and the lower end line L4 indicating the lower end of the host vehicle V1 may be extended from the host lane and superimposed on the right lane to which the lane is changed. This makes it easier for the driver to grasp the position of the host vehicle on the display 50.
- the combining unit 36 may superimpose the upper end line L3 and the lower end line L4 only on the right lane to which the lane is changed.
- the host vehicle V1 may be displayed on the display 50 as a transparent icon that can be seen through.
- the driver can easily distinguish the preceding vehicle V4 and the succeeding vehicle V2 from the host vehicle V1, and can easily grasp the surrounding situation of the host vehicle V1.
- the host vehicle V1 may be processed to be displayed above the center of the display 50. This makes it easier for the driver to confirm the presence of the following vehicle.
- the virtual viewpoint position is changed based on the steering angle, but the present invention is not limited to this.
- the virtual viewpoint position may be changed based on the detected yaw rate using a yaw rate sensor.
- the present invention can be applied to an autonomous driving vehicle.
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Abstract
Description
図1を参照して第1実施形態に係る表示支援装置1について説明する。図1に示すように、表示支援装置1は、フロントカメラ10と、ライトカメラ11と、レフトカメラ12と、リアカメラ13と、ナビゲーション装置14と、舵角センサ15と、車速センサ16と、ウィンカースイッチ17と、コントローラ30と、ディスプレイ50とを備える。
なお、以下の説明において、フロントカメラ10、ライトカメラ11、レフトカメラ12、及びリアカメラ13の4つカメラのことを「フロントカメラ10など」と記載する。
次に、図6~図9を参照して本発明の第2実施形態について説明する。第2実施形態に係る表示支援装置1は、前述した第1実施形態と構成は同一であり、走行シーンが相違する。第1実施形態では走行シーンとして直線道路での動作を説明したが、第2実施形態ではカーブでの動作を説明する。
図6に示す走行シーンは、2車線道路のカーブにおいて右車線(外側車線)を走行している自車両が、左車線(内側車線)に車線変更するシーンである。図6に示すP1~P3は、自車位置である。また、図6に示すP1’~ P3’はそれぞれ、自車位置P1~P3に対応する仮想視点位置である。また、図6に示すR1~R3は、仮想視点から見下ろす俯瞰画像の視野範囲を示す。また、図6に示すV2は、後続車両である。
次に、図10~図13を参照して、本発明の第3実施形態について説明する。第3実施形態が、第1実施形態と異なる点は、図10に示すように表示支援装置2がレーザレンジファインダー18を備えることである。第1実施形態と重複する構成については符号を引用してその説明は省略することとし、以下、相違点を中心に説明する。
11 ライトカメラ
12 レフトカメラ
13 リアカメラ
14 ナビゲーション装置
15 舵角センサ
16 車速センサ
17 ウィンカースイッチ
18 レーザレンジファインダー
30 コントローラ
31 車線検出部
32 仮想視点位置演算部
33 視点変換部
34 記憶部
35 視点切替部
36 合成部
50 ディスプレイ
Claims (10)
- 車両に設置された複数の撮影手段で撮影された画像を上空の仮想視点から見下ろした俯瞰画像に変換し、前記俯瞰画像に前記車両の位置を示す自車アイコンを重畳して表示手段に表示する表示支援装置において、
前記車両の舵角を検出する舵角センサと、
前記舵角センサによって検出された前記舵角に基づいて前記仮想視点の位置を変更する変更手段と
を備えることを特徴とする表示支援装置。 - 前記変更手段は、前記車両が走行している走行車線から隣接する隣接車線に車線変更する場合、前記仮想視点の位置を前記隣接車線側に変更することを特徴とする請求項1に記載の表示支援装置。
- 前記変更手段は、前記車両が走行している走行車線から隣接する隣接車線に車線変更する場合、前記仮想視点の位置を隣接車線上または前記走行車線と前記隣接車線との境界線上に変更することを特徴とする請求項1または2に記載の表示支援装置。
- 前記俯瞰画像を加工する加工手段をさらに備え、
前記加工手段は、前記自車アイコンの上端を示す上端線と、前記自車アイコンの下端を示す下端線を前記隣接車線に重畳することを特徴とする請求項2または3に記載の表示支援装置。 - 前記加工手段は、前記自車アイコンを透視可能な透明性を有するアイコンとして重畳することを特徴とする請求項4に記載の表示支援装置。
- 前記加工手段は、前記自車アイコンを前記俯瞰画像の中央より上に重畳することを特徴とする請求項4または5に記載の表示支援装置。
- 前記変更手段は、前記車両がカーブを走行中に前記カーブの外側車線から前記カーブの内側車線に車線変更する場合、前記仮想視点の位置をカーブ内側に移動させる、または前記仮想視点の視野角を前記カーブ内側に傾けることを特徴とする請求項1に記載の表示支援装置。
- 前記車両の周辺環境を検出する周辺検出手段をさらに備え、
前記変更手段は、前記周辺検出手段によって前記車両の前方に狭路が検出された場合、前記仮想視点が前記狭路の中心に正対するように前記仮想視点の位置を変更することを特徴とする請求項1に記載の表示支援装置。 - 前記変更手段は、前記車両が車線変更した後、前記舵角が中立に戻ってから所定時間経過後に前記仮想視点の位置を車線変更後の車線上に変更することを特徴とする請求項1に記載の表示支援装置。
- 車両に設置された複数の撮影手段で撮影された画像を上空の仮想視点から見下ろした俯瞰画像に変換し、前記俯瞰画像に前記車両の位置を示す自車アイコンを重畳して表示手段に表示する表示支援方法において、
前記車両の舵角を検出し、
検出した前記舵角に基づいて前記仮想視点の位置を変更することを特徴とする表示支援方法。
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
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US15/765,957 US10311618B2 (en) | 2015-10-08 | 2016-09-09 | Virtual viewpoint position control device and virtual viewpoint position control method |
CA3001287A CA3001287C (en) | 2015-10-08 | 2016-09-09 | Display assistance device and display assistance method |
MX2018004231A MX367989B (es) | 2015-10-08 | 2016-09-09 | Dispositivo de asistencia de despliegue y método de asistencia de despliegue. |
RU2018116738A RU2678436C1 (ru) | 2015-10-08 | 2016-09-09 | Устройство помощи при отображении и способ помощи при отображении |
CN201680057775.XA CN108141569B (zh) | 2015-10-08 | 2016-09-09 | 显示辅助装置及显示辅助方法 |
JP2017544426A JP6521086B2 (ja) | 2015-10-08 | 2016-09-09 | 表示支援装置及び表示支援方法 |
EP16853384.2A EP3361721B1 (en) | 2015-10-08 | 2016-09-09 | Display assistance device and display assistance method |
BR112018007131-5A BR112018007131A2 (ja) | 2015-10-08 | 2016-09-09 | A display supporting device and a display support method |
KR1020187010342A KR101983957B1 (ko) | 2015-10-08 | 2016-09-09 | 표시 지원 장치 및 표시 지원 방법 |
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BR (1) | BR112018007131A2 (ja) |
CA (1) | CA3001287C (ja) |
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WO2019142660A1 (ja) * | 2018-01-19 | 2019-07-25 | ソニー株式会社 | 画像処理装置および画像処理方法、並びにプログラム |
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CA3001287A1 (en) | 2017-04-13 |
MX367989B (es) | 2019-09-13 |
JPWO2017061230A1 (ja) | 2018-09-13 |
CN108141569A (zh) | 2018-06-08 |
MX2018004231A (es) | 2018-05-15 |
CN108141569B (zh) | 2020-04-28 |
BR112018007131A2 (ja) | 2018-11-06 |
US20180286095A1 (en) | 2018-10-04 |
KR101983957B1 (ko) | 2019-05-29 |
EP3361721A1 (en) | 2018-08-15 |
CA3001287C (en) | 2020-01-14 |
EP3361721B1 (en) | 2020-02-26 |
JP6521086B2 (ja) | 2019-05-29 |
US10311618B2 (en) | 2019-06-04 |
EP3361721A4 (en) | 2018-08-15 |
KR20180053710A (ko) | 2018-05-23 |
RU2678436C1 (ru) | 2019-01-29 |
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