WO2005119177A1 - 車載ナビゲーション装置、自車位置補正方法 - Google Patents
車載ナビゲーション装置、自車位置補正方法 Download PDFInfo
- Publication number
- WO2005119177A1 WO2005119177A1 PCT/JP2005/005382 JP2005005382W WO2005119177A1 WO 2005119177 A1 WO2005119177 A1 WO 2005119177A1 JP 2005005382 W JP2005005382 W JP 2005005382W WO 2005119177 A1 WO2005119177 A1 WO 2005119177A1
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- WIPO (PCT)
- Prior art keywords
- vehicle
- road
- map matching
- marking line
- map
- Prior art date
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
- G08G1/0969—Systems involving transmission of navigation instructions to the vehicle having a display in the form of a map
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/28—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network with correlation of data from several navigational instruments
- G01C21/30—Map- or contour-matching
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
- G06V20/588—Recognition of the road, e.g. of lane markings; Recognition of the vehicle driving pattern in relation to the road
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
- G09B29/10—Map spot or coordinate position indicators; Map reading aids
- G09B29/106—Map spot or coordinate position indicators; Map reading aids using electronic means
Definitions
- the present invention relates to an in-vehicle navigation device that displays a vehicle position on a road map using a map matching technique.
- a navigation device having a function of automatically searching for a new recommended route based on the own vehicle position when the own vehicle position deviates from the recommended route (automatic rerouting function) is also known.
- automatic rerouting function a navigation device having a function of automatically searching for a new recommended route based on the own vehicle position when the own vehicle position deviates from the recommended route.
- the position jumping phenomenon occurs while the own vehicle is traveling on the recommended route, so that the own vehicle position is displayed outside the recommended route, and is displayed again on the recommended route.
- the auto reroute is executed each time.
- the useless execution of auto-reroute can be bothersome and confusing for the user.
- a route guidance device that prohibits auto reroute in a situation where a position jump phenomenon occurs (Patent Document 1).
- Patent Document 1 JP-A-2000-241182
- the route guidance device disclosed in Patent Literature 1 is useful when there are a plurality of roads that are map matching candidates, for example, when the vehicle is traveling near a branch point. Prohibited. As a result, even if a position jump phenomenon occurs and the current position of the vehicle deviates from the recommended route and is displayed, the auto reroute is not executed. Disclosure of the invention
- An on-vehicle navigation device includes a vehicle position detecting means for detecting the position of the vehicle and the traveling direction of the vehicle, and a road from an image of a road ahead or behind the vehicle captured by a camera. Based on the road marking line detecting means for detecting the marking line and the own vehicle position and own vehicle traveling direction detected by the own vehicle position detecting means! Based on the map matching candidate specifying means for specifying a road as a map matching candidate and the road marking line detection result of the road marking line detecting means, the road specified by the map matching candidate specifying means is searched for on the road.
- Determining means for determining whether or not the own vehicle is traveling; and detecting the self-vehicle position detected by the own vehicle position detecting means in accordance with the road on which the own vehicle is determined to be traveling.
- a map matching means for correcting the vehicle position, and a vehicle position display means for displaying the corrected vehicle position corrected by the map matching means on a road map.
- the map-matching candidate specifying means includes: one branch point which is within a predetermined distance range of the own vehicle position force and further extends in a predetermined angle from the own vehicle traveling direction. It is preferable to identify a plurality of roads that have diverged forces as map matching candidate roads. The determining means determines that the own vehicle is traveling on only one of the plurality of roads identified by the map matching candidate identifying means, and determines that the own vehicle is traveling on the other roads. Then, it is preferable to judge that. Further, it is preferable that the map matching means corrects the position of the vehicle according to any one of the roads on which the vehicle is determined to be traveling.
- the determining means determines the lane in which the vehicle has traveled to the branch point based on the positional relationship of the plurality of road marking lines detected by the road marking line detecting means. It is preferable to determine that the vehicle travels only on one of the plurality of roads.
- the determining means determines whether or not the own vehicle has a force exceeding the road marking line based on the detection result of the road marking line by the road marking line detection means, and determines whether or not the vehicle has a force exceeding the road marking line. If it is determined that the vehicle has exceeded the vehicle, the own vehicle may travel on the road identified by the map matching candidate identification means, and may be determined to be unacceptable. In this on-vehicle navigation device, the determining means determines whether or not the own vehicle is running in the lane based on the positional relationship on the screen of the plurality of road marking lines detected by the road marking line detecting means.
- the vehicle when it is determined that the vehicle is traveling in the lane, regardless of the result of the determination as to whether or not the own vehicle has a force exceeding the road marking line, the vehicle is driven on the road specified by the map matching candidate specifying means. It is preferable to determine that the own vehicle is running.
- the own vehicle position and the own vehicle traveling direction are detected, and a road as a map matching candidate is specified based on the detected own vehicle position and the own vehicle traveling direction. Then, based on the detection result of the road marking line based on the captured image of the road ahead or behind the own vehicle, it is determined whether the own vehicle is traveling on the identified map matching candidate road. . Based on the result of this judgment, map matching processing was performed in accordance with the road on which the vehicle was determined to be traveling, and the corrected vehicle position was displayed on the road map. With this configuration, even if there are a plurality of roads that are map matching candidates, the vehicle position can be correctly displayed on the roads. As a result, it is possible to execute the auto reroute based on the displayed own vehicle position.
- FIG. 1 is a block diagram showing a configuration of a navigation device according to an embodiment of the present invention.
- FIG. 2 is a diagram exemplifying a state where a vehicle is traveling on a road having a branch point.
- FIG. 3 is a diagram showing an example of a captured image captured by a camera in the situation of FIG. 2.
- FIG. 4 is a flowchart of a map matching process executed in the first embodiment.
- FIG. 5 is a diagram exemplifying a state in which a vehicle turns left into a parking lot along a road power road.
- FIG. 6 is a diagram illustrating an example of a captured image captured by a camera in the situation of FIG. 5.
- FIG. 7 is a flowchart of a map matching process executed in the second embodiment.
- FIG. 1 shows a configuration of a navigation device according to an embodiment of the present invention.
- the navigation device 1 shown in FIG. 1 displays a vehicle position correctly on a road by improving map matching accuracy by using an image captured in front of the vehicle.
- the navigation device 1 is mounted on a vehicle, and can display a road map and guide the own vehicle to a set destination.
- the navigation device 1 includes a control circuit 11, a ROM 12, a RAM 13, a current position detecting device 14, an image memory 15, a display monitor 16, an input device 17, and a disk drive 19.
- the camera 2 is connected to the control circuit 1, and the disk drive 19 is loaded with a DVD-ROM 20 on which map data is recorded.
- the control circuit 11 includes a microprocessor and its peripheral circuits, and performs various processes and controls by executing a control program stored in the ROM 12 using the RAM 13 as a work area.
- the current position detection device 14 is a device that detects the current position of the own vehicle, that is, the own vehicle position, and the traveling direction of the own vehicle, that is, the own vehicle traveling direction.For example, a vibration gyro 14a that detects a change in the direction of the own vehicle, The vehicle speed sensor 14b detects vehicle speed and the GPS sensor 14c detects GPS signals from GPS satellites. The position of the vehicle detected by the current position detection device 14 is corrected in accordance with the road by a well-known map matching process executed in the control circuit 11.
- the image memory 15 temporarily stores image data to be displayed on the display monitor 16.
- the image data is composed of road map drawing data for displaying a road map, various graphic data, and the like, and is controlled based on the map data recorded in the DVD-ROM 20. Created by the control circuit 11.
- the created image data is output from the control circuit 11 to the image memory 15, so that a road map is displayed on the display monitor 16, and the own vehicle position is displayed thereon.
- the input device 17 has various input switches for the user to set a destination or a transit point of the vehicle (hereinafter, these are simply referred to as a destination).
- the input device 17 is realized by an operation panel, a remote controller, or the like. By operating the input device 17 in accordance with a screen instruction displayed on the display monitor 16, the user can set a destination by designating a place name, a position on a map, and the like.
- the disk drive 19 reads map data for displaying a road map from the loaded DVD-ROM 20.
- This map data includes route calculation data used for route search, route guidance data used to guide the vehicle to the destination according to recommended routes, such as intersection names and road names, and road data representing roads. It is included.
- the map data also includes background data representing map shapes other than roads, such as rivers, railroads, and various facilities (landmarks) on the map.
- the minimum unit representing a road section is called a link
- each road is constituted by a plurality of links.
- the point connecting the links is called a node, and each node has position information (coordinate information).
- the link shape that is, the shape of the road is determined based on the position information of the node.
- the map data described in the example using the DVD-ROM may be read from a recording medium other than the DVD-ROM, for example, a CD-ROM / node disk.
- the camera 2 is installed at a position where an image of a road ahead of the own vehicle can be taken.
- the image captured by the camera 2 is output as image data to the control circuit 11 at a predetermined frame rate.
- the control circuit 11 uses the captured image data of the road ahead of the vehicle output from the camera 2 to execute a white line extraction process as described later, and determines the traveling lane of the vehicle.
- a CCD camera or the like can be used as the camera 2, for example.
- the own vehicle position corrected by the map matching process is used as a route search start point, and a predetermined algorithm performed based on the above-described route calculation data is used. From the current location to the destination The route search up to is performed. The recommended route obtained as a result of this route search is displayed on a road map so as to be distinguished from other roads by changing its display form, for example, the display color. Thus, the user can recognize the recommended route to the destination on the road map displayed on the display monitor 16.
- the navigation device 1 guides the user's vehicle by instructing the user to proceed in the direction of the image or sound so that the vehicle can travel along the recommended route. As described above, the navigation device 1 performs the route guidance to the destination by displaying the recommended route on the road map and guiding the own vehicle to the destination according to the recommended route.
- the navigation device 1 has an auto reroute function.
- the navigation device 1 determines that the position of the own vehicle has deviated from the recommended route force during the route guidance to the destination, the navigation device 1 automatically performs a reroute process. Can be performed.
- a route search to the destination is performed again based on the position of the own vehicle at the time of departure from the recommended route, and subsequent route guidance is performed according to the new recommended route obtained as a result.
- this automatic rerouting even if the host vehicle runs off the recommended route power, the route guidance to the destination can be continued.
- a road as a map matching candidate is specified based on the own vehicle position detected by the current position detection device 14 and the own vehicle traveling direction. Is done. Specifically, a road which is within the detected distance range of the detected position of the vehicle and extends in a direction within a predetermined angle from the traveling direction of the vehicle is set as a map matching candidate. The road of such a map matching candidate is specified based on the map data recorded in the DVD-ROM 20, and the position of the own vehicle on the road is corrected. At this time, the own vehicle position corrected by the current map matching process is obtained in consideration of the own vehicle position corrected by the previous map matching process.
- the traveling lane of the own vehicle is determined using the image captured by the camera 2, so that even when there are a plurality of map matching candidate roads, V
- the map matching process is executed according to one of the roads. By doing so, the position jump phenomenon described above can be prevented.
- the specific method is described below.
- FIG. 2 is a diagram exemplifying a state where a vehicle is traveling on a road having a branch point.
- the host vehicle 100 is traveling in the direction of the upward direction on the road 200, where the power is also diverging, with the lower force shown in the figure, traveling in the left lane up to the junction, and splitting to the left from the junction. Road.
- the vehicle 100 is equipped with the navigation device 1 and the camera 2 shown in FIG.
- FIG. 3 shows an example of an image taken by the camera 2 in the situation shown in FIG. 2, that is, a taken image of a road extending in front of the host vehicle 100.
- Each of the captured images shown in FIGS. 3 (a), (b), (c) and (d) is an image taken at the own vehicle position A, B, C and D in FIG. 2, respectively. .
- the navigation device 1 executes a road marking line detection process for detecting a road marking line on a road using each captured image shown in FIG.
- This road marking line detection processing is realized by, for example, an edge extraction processing for extracting an edge portion in an image.
- the road marking lines 31, 32, and 33 are also detected by the road marking line detection processing, for example, in the captured image power of (a).
- the navigation device 1 After the road marking line on the road is detected by the above-described road marking line detection process, the navigation device 1 further determines the traveling lane in which the host vehicle 100 is traveling based on the detection result. .
- Road marking lines 31 and 32 are detected at symmetrical positions from the center of the image, and a road marking line 33 is detected at a position on the right side of the road marking line 32. Based on the positional relationship between these road marking lines, it can be determined that the vehicle 100 is traveling on the left lane. In this lane determination process, it is preferable to know in advance how many lanes the vehicle is traveling on by referring to the information on the number of traveling lanes recorded in the map data. .
- the own vehicle 100 travels in the left lane even with the captured images of (b) and (c). It can be determined that As described above, when it can be determined that the vehicle is traveling in the left traveling lane before the branch, it can be understood that the traveling lane force on the left continues after the branch and that the vehicle travels on the left road. .
- the correspondence between the traveling lane before the branch and the road after the branch can be determined based on the map data.
- FIG. 4 shows a flowchart of the map matching process executed in the present embodiment. This flowchart is always executed by the control circuit 11 at predetermined processing intervals when a road map is displayed on the display monitor 16.
- step S1 the current position detecting device 14 detects the own vehicle position and the own vehicle traveling direction. At this point, the map matching process has not been performed yet, so the vehicle position at this time is corrected according to the road! /.
- step S2 the camera 2 images a road ahead of the host vehicle.
- step S3 the above-described road marking line detection processing is executed using the captured image captured in step S2.
- step S4 based on the result of the road marking line detection processing executed in step S3, the lane determination processing is executed as described above.
- step S5 it is determined whether or not there is a plurality of roads as map matching candidates. This At this time, based on the own vehicle position and own vehicle traveling direction detected in step SI, the road as a map matching candidate is specified by the method described above. If there are two or more map matching candidate roads specified in this way, the process proceeds to step S6, and if there is only one V, the process proceeds to step S7.
- step S5 If there is no road specified as the map matching candidate in step S5, the processes in steps S6 and S7 described below cannot be executed. Therefore, in such a case, the process proceeds from step S5 to step S8, and the own vehicle position detected in step S1 is displayed on the road map as it is, so that the own vehicle position is displayed at a place other than on the road. You can do it.
- step S6 based on the result of the lane determination process in step S4, one of the plurality of map matching candidates is used to determine the road on which the vehicle is traveling, as described above.
- step S7 a well-known map matching process is executed based on the own vehicle position and the own vehicle traveling direction detected in step S1. At this time, if it is determined in step S5 that there are a plurality of roads that are map matching candidates, and if it is determined that the vehicle is running in step S6, only one of the roads is determined. Execute map matching processing. By executing the map matching process in step S7, the position of the host vehicle is corrected according to the road on which the host vehicle is traveling.
- step S8 the display monitor 16 displays the own vehicle position on a road map based on the own vehicle position corrected by the map matching processing in step S7. In this way, it is possible to improve the map matching accuracy using the captured image in front of the own vehicle. As a result, even in an area where a plurality of roads are close to each other, such as near a junction, the position of the vehicle can be correctly displayed on the road, and the position skipping phenomenon can be prevented.
- step S1 The vehicle position and the traveling direction of the vehicle are detected (step S1), and a road marking line is detected from the image of the road ahead of the vehicle captured by the camera 2 (step S3). Based on the detected own vehicle position and own vehicle traveling direction, a road as a map matching candidate is specified (step S5). If there are a plurality of map matching candidate roads identified in this way, the vehicle is traveling on which road based on the detection result of the road marking lines. Is determined (step S6). Based on the result of this determination, map matching processing is performed according to the road on which the vehicle is determined to be traveling (step S7), and the corrected vehicle position is displayed on the road map (step S8). I decided. In this way, even if there are a plurality of roads that are map matching candidates, the own vehicle position can be correctly displayed on the roads. As a result, it is possible to execute the auto reroute based on the displayed own vehicle position.
- Step S6 From among a plurality of roads branching from one branch point, which are specified as map matching candidate roads, one of the roads on which the host vehicle is traveling is determined (Step S6). ). The map matching process is performed according to this road (step S8). With such a configuration, the position of the own vehicle can be correctly corrected in accordance with one of the roads that diverge, and the position jumping phenomenon near the branch point can be prevented.
- step S4 The lane in which the vehicle has traveled to the branch point is determined based on the positional relationship between the plurality of road marking lines detected from the captured image (step S4). Based on this lane determination result, it is determined that the vehicle is traveling on only one of the roads, and that it is a road (step S6). With this configuration, it is possible to easily and accurately determine the road on which the vehicle is traveling using the captured image.
- the lane in which the host vehicle is traveling in front of the branch point is determined using the image captured by the camera 2, and the result of the determination is used to determine which lane on the road after the branch.
- the road on which the vehicle travels by other methods may be determined.
- the road marking lines 34 and 35 are on the left road where the vehicle 100 is traveling, and the road marking line 36 is on the right road.
- the road marking line 36 is detected at a position on the right side of the road marking lines 34 and 35, which indicates that the vehicle is traveling on the left road after the branch.
- the road on which the own vehicle is traveling can be determined based on the positional relationship between the plurality of road marking lines detected from the captured image after branching.
- the own vehicle is running after the branch based on the captured image immediately before the branch.
- Roads can also be determined. Normally, two road marking lines overlap at a junction, so the road marking lines are thicker than in other places. By detecting which side of the road marking line, which is thicker than the other places, is located on the left or right, based on the own vehicle's power, it is possible to judge whether the own vehicle has advanced to the left or right at the junction. it can. In this way, it is possible to determine the road on which the vehicle is traveling after the branch.
- a second embodiment of the present invention will be described below.
- the position of the own vehicle is erroneously displayed on the road by map matching. It prevents elephants. Note that the configuration of the navigation device according to this embodiment is the same as that of the first embodiment shown in FIG.
- FIG. 6 shows an example of a captured image when the camera 2 captures an image in front of the host vehicle 100 in the situation shown in FIG.
- Each of the captured images shown in FIGS. 6 (a), (b), (c) and (d) is an image captured at the own vehicle position E, F, G and H in FIG.
- a road marking line detection process similar to that described in the first embodiment is executed, and based on the road marking line detection result, the vehicle 100 generates a road marking line. Determine whether or not it has been exceeded.
- FIG. 7 shows a flowchart of the map matching process executed in the present embodiment.
- processing steps having the same contents as those in the flowchart of the first embodiment shown in FIG. 4 have the same step numbers.
- the description of the same step numbers as those in FIG. 4 will be omitted below.
- step S1A it is determined based on the own vehicle position and the own vehicle traveling direction detected in step S1 whether or not a road that is a map matching candidate has a certain force.
- a road that also has its own vehicle position force within a predetermined distance range and further extends in a direction within a predetermined angle from the own vehicle traveling direction is specified as a map matching candidate. If there is a map matching candidate road identified in this way, the process proceeds to step S2. On the other hand, if there is no road that satisfies these conditions, it is determined that there is no map matching candidate road, and the process proceeds to step S8.
- the map matching process in step S7 is not performed, and the own vehicle position corrected in step S8, that is, the In step 1, the detected vehicle position is displayed on a road map as it is.
- step S5A based on the result of the lane determination processing in step S4, it is determined whether or not the vehicle travels in a lane on the road. If it is determined that the vehicle runs in the lane, the process proceeds to step S7. In this case, since the host vehicle is considered to be running on the road, map matching processing is executed in step S7. On the other hand, if it is determined that the vehicle has not traveled in the lane in step S5A, the process proceeds to step S5B.
- step S5B it is determined based on the result of the road marking line detection processing in step S3 whether or not the own vehicle has crossed the road marking line. If it is determined that the vehicle has crossed the road marking line, go to step S8. In this case, it is considered that the vehicle is not traveling on the road. In step S8, without executing the map matching process in step S7, the corrected vehicle position is displayed. On the other hand, if it is determined in step S5B that the vehicle has crossed the road marking line and is determined to be! / ⁇ , the process proceeds to step S7. In this case, since it is considered that the own vehicle has turned around the intersection, the map matching processing is executed at step S7 in step S7.
- step S5B it is determined whether the vehicle has crossed the road marking line. If it is determined that the vehicle has crossed the road, the map matching candidate is determined. It is determined that the own vehicle is running on the road that has been set, and that no map matching processing is performed. With this configuration, it is possible to prevent a situation in which the own vehicle position is erroneously displayed on the road by map matching when the own vehicle is not traveling on the road while entering a parking lot or the like along the road.
- step S5A Based on the positional relationship of the plurality of road marking lines detected from the captured image, it is determined whether or not the own vehicle travels in the lane (step S5A), and the vehicle travels in the lane. If it is determined that the vehicle is running, it is determined that the vehicle is running on the road that is a candidate for the map matching, and the map matching process is executed (step S7). With this configuration, it is possible to prevent the map matching process from being executed by mistake when the vehicle crosses the road marking line due to a lane change or the like.
- the traveling lane of the own vehicle is determined by imaging the road ahead of the own vehicle by camera 2 and detecting the road marking line from the captured image. For example, it was determined whether or not the vehicle crossed the road marking line. However, an image of a road behind the host vehicle may be taken. The processing described in each of the above embodiments can also be executed using the captured image behind the host vehicle.
- various traffic sign lines drawn on the road such as a white line and a yellow line, for example, can be used to detect a captured image force.
- an object installed on the road such as a median strip may be detected.
- a navigation device that displays a road map based on map data recorded on a storage medium such as a DVD-ROM has been described as an example. Is not limited to this content.
- the present invention can be applied to a communication navigation device that downloads map data from an information distribution center using wireless communication by a mobile phone or the like.
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN200580017999XA CN1961197B (zh) | 2004-06-02 | 2005-03-24 | 车载导航装置和目标车辆位置修正方法 |
DE112005001307.3T DE112005001307B4 (de) | 2004-06-02 | 2005-03-24 | Eingebaute Navigationsvorrichtung und Verfahren zur Korrektur der eigenen Fahrzeugposition |
US11/597,937 US7653482B2 (en) | 2004-06-02 | 2005-03-24 | On-vehicle navigation apparatus and subject vehicle position correction method |
Applications Claiming Priority (2)
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JP2004164744A JP4377284B2 (ja) | 2004-06-02 | 2004-06-02 | 車載ナビゲーション装置 |
JP2004-164744 | 2004-06-02 |
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WO2005119177A1 true WO2005119177A1 (ja) | 2005-12-15 |
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PCT/JP2005/005382 WO2005119177A1 (ja) | 2004-06-02 | 2005-03-24 | 車載ナビゲーション装置、自車位置補正方法 |
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US (1) | US7653482B2 (ja) |
JP (1) | JP4377284B2 (ja) |
CN (1) | CN1961197B (ja) |
DE (1) | DE112005001307B4 (ja) |
WO (1) | WO2005119177A1 (ja) |
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CN101089558B (zh) * | 2006-06-13 | 2011-11-30 | 环达电脑(上海)有限公司 | 位置显示导正系统及其方法 |
CN106323289A (zh) * | 2016-08-23 | 2017-01-11 | 北京小米移动软件有限公司 | 平衡车的控制方法及装置 |
WO2022052567A1 (zh) * | 2020-09-08 | 2022-03-17 | 广州小鹏自动驾驶科技有限公司 | 一种车辆定位的方法及装置、车辆、存储介质 |
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KR100674506B1 (ko) * | 2005-06-01 | 2007-01-25 | 주식회사 현대오토넷 | 원터치 맵매칭 보정 기능을 가지는 네비게이션 시스템 및그 방법 |
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Also Published As
Publication number | Publication date |
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CN1961197A (zh) | 2007-05-09 |
US20080077322A1 (en) | 2008-03-27 |
CN1961197B (zh) | 2011-01-12 |
JP2005345240A (ja) | 2005-12-15 |
JP4377284B2 (ja) | 2009-12-02 |
DE112005001307B4 (de) | 2018-08-02 |
DE112005001307T5 (de) | 2007-05-03 |
US7653482B2 (en) | 2010-01-26 |
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