CN107063282A - A kind of automobile navigation method and its device based on tunnel - Google Patents

A kind of automobile navigation method and its device based on tunnel Download PDF

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Publication number
CN107063282A
CN107063282A CN201710250965.XA CN201710250965A CN107063282A CN 107063282 A CN107063282 A CN 107063282A CN 201710250965 A CN201710250965 A CN 201710250965A CN 107063282 A CN107063282 A CN 107063282A
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China
Prior art keywords
vehicle
tunnel
picture
information
turn
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CN201710250965.XA
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陈卫文
杨承晋
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Shenzhen Branch Of National Semiconductor Ltd By Share Ltd
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Shenzhen Branch Of National Semiconductor Ltd By Share Ltd
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Priority to CN201710250965.XA priority Critical patent/CN107063282A/en
Publication of CN107063282A publication Critical patent/CN107063282A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34Route searching; Route guidance
    • G01C21/3407Route searching; Route guidance specially adapted for specific applications
    • G01C21/3415Dynamic re-routing, e.g. recalculating the route when the user deviates from calculated route or after detecting real-time traffic data or accidents

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Navigation (AREA)

Abstract

The invention discloses the automobile navigation method based on tunnel and its device, wherein, the automobile navigation method includes:The picture that S1 is shot according to capture apparatus obtains the travel speed of vehicle;The picture that S2 is shot according to capture apparatus judges the turn information of vehicle;The turn information for the vehicle that S3 is obtained in the travel speed and step S2 according to the obtained vehicles of step S1 judges positional information of the vehicle in tunnel;S4 judges whether to travel according to predetermined paths according to the positional information of vehicle, if it is not, jumping to step S5;S5 is according to the positional information of vehicle again programme path.Its travel speed, turn information according to vehicle in tunnel etc. obtains positional information of the vehicle in tunnel, and positioning of the vehicle in tunnel is realized with this, and then is positioned in tunnel, and facility is provided for driver.

Description

A kind of automobile navigation method and its device based on tunnel
Technical field
The present invention relates to field of locating technology, more particularly to a kind of automobile navigation method and its device.
Background technology
Vehicular navigation technology is the important branch of GPS (Global Positioning System, GPS) technology, its work Principle is:Navigation equipment receives the position coordinates of at least 3 satellite transmission in earth-circling 24 gps satellites, and will receive To the electronic map that is stored with itself of position coordinates described in position coordinates matched, determine to carry the navigation with this Accurate location of the vehicle of equipment in electronic map.Navigation equipment can be car-mounted terminal, portable navigation device, mobile phone terminal Deng.Based on this, after user sets departure place and destination, the guidance path that navigation equipment is obtained according to calculating is user Navigation, helps car owner quickly to arrive at.
At present, after navigation equipment enters tunnel, because navigation equipment can not receive gps signal, or it can only receive To the position coordinates transmitted less than three satellites, so that the current location of navigation equipment can not be obtained, with this, vehicle is in tunnel During middle traveling, navigation equipment can not be navigated for user.
If tunnel Nei You fork on the road, typically can enter tunnel before make navigation instruction, still, if tunnel away from Distance from bifurcated mouthful is longer, and navigation equipment can not provide navigation information in time when vehicle reaches fork on the road;Further, If driver makes false judgment in the fork on the road in tunnel, now GPS can not upgrade in time the road information, again of vehicle New programme path and prompting is made, can undoubtedly be made troubles to driver.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of automobile navigation method and its device based on tunnel, effectively solve The technical problem that existing navigation equipment of having determined can not be navigated in tunnel.
A kind of automobile navigation method based on tunnel, applied to navigation equipment, the right ahead includes capture apparatus, And the vehicle is travelled in tunnel, the automobile navigation method includes:
The picture that S1 is shot according to capture apparatus obtains the travel speed of vehicle;
The picture that S2 is shot according to capture apparatus judges the turn information of vehicle;
The turn information for the vehicle that S3 is obtained in the travel speed and step S2 according to the obtained vehicles of step S1 judges car Positional information in tunnel;
S4 judges whether to travel according to predetermined paths according to the positional information of vehicle, if it is not, jumping to step S5;
S5 is according to the positional information of vehicle again programme path.
In the technical program, when vehicle traveling is in tunnel, according to travel speed of the vehicle in tunnel, turns and believe Breath etc. obtains positional information of the vehicle in tunnel, realizes positioning of the vehicle in tunnel with this, and then determined in tunnel Position, facility is provided for driver.
It is further preferred that specifically including in step sl:
S11 capture apparatus shoots picture according to predeterminated frequency;
S12 chooses at least one reference point in picture is shot;
S13 calculates the travel speed of vehicle according to the displacement and shooting time of reference point in the picture of shooting in real time.
In the technical program, reference point is chosen in the picture of shooting, so as to be calculated according to the change in location of reference point The real time running speed of vehicle, it is simple and convenient.
It is further preferred that specifically including in step s 2:
S21 extracts the characteristic point for the picture not shot in the same time respectively;
S22 matches the characteristic point of different pictures;
S23 calculates the transformational relation between different pictures according to the characteristic point of matching, so that the turn information of vehicle is obtained, The turn information includes angle of turn and turn direction.
It is further preferred that also including before step S1:
In the technical program, obtain shooting the anglec of rotation of picture by matching the characteristic point between different pictures, with This obtains the angle of turn information of vehicle, and further information is provided for the positioning of vehicle.
The geographical location information that S0 navigation equipments collection vehicle enters before tunnel, plans in tunnel according to destination and travels Predetermined paths.
It is further preferred that specifically including in step s3:
Geographical location information, the travel speed of vehicle and the running time that S31 enters before tunnel according to vehicle, which are calculated, to be obtained Displacement of the vehicle in tunnel;
The turn information of displacements of the S32 according to vehicle in tunnel, combining cartographic information and vehicle, obtains vehicle in tunnel In positional information.
It is further preferred that including in step s 4:
S41 judges whether vehicle have selected correct bifurcated mouthful according to the turn information of vehicle, if so, jumping to step S42, otherwise jumps to step S5;
S42 navigates according to predetermined paths.
Present invention also offers a kind of vehicle navigation apparatus based on tunnel, applied to navigation equipment, the navigation equipment The geographical location information that collection vehicle enters before tunnel, and the predetermined paths travelled in tunnel are planned according to destination, it is described Right ahead includes capture apparatus, and the vehicle navigation apparatus includes:
Picture acquisition module, for obtaining the picture shot from capture apparatus;
Computing module, the travel speed for obtaining vehicle and vehicle are calculated for the picture that is obtained according to picture acquisition module Turn information, and obtain position letter of the vehicle in tunnel for the travel speed and the turn information of vehicle according to vehicle Breath;
Judge module, the positional information of the vehicle for being obtained according to computing module judges whether according to predetermined paths row Sail.
In the technical program, when vehicle traveling is in tunnel, according to travel speed of the vehicle in tunnel, turns and believe Breath etc. obtains positional information of the vehicle in tunnel, realizes positioning of the vehicle in tunnel with this, and then determined in tunnel Position, facility is provided for driver.
It is further preferred that the computing module includes:
Reference point chooses unit, for choosing at least one reference point in the picture that picture acquisition module is obtained;
Arithmetic element, the position of vehicle is calculated for choosing position of the reference point of module selection in picture according to reference point Move, and displacement according to vehicle and shooting time calculate the travel speed of vehicle in real time.
It is further preferred that also including in the computing module:
Feature extraction unit, the characteristic point of the picture not shot in the same time for extracting the acquisition of picture acquisition module;
Characteristic matching unit, the characteristic point for the different pictures that point is extracted is extracted for matching characteristic;
The arithmetic element calculates the transformational relation between different pictures according to the characteristic point of characteristic matching units match, from And obtain the turn information of vehicle.
It is further preferred that also include position information acquisition module in the vehicle navigation apparatus, wherein,
Geographical location information, the travel speed of vehicle and running time that the arithmetic element enters before tunnel according to vehicle Calculating obtains displacement of the vehicle in tunnel;
Displacement of the vehicle that the position information acquisition module is calculated according to arithmetic element in tunnel, combining cartographic information With the turn information of vehicle, positional information of the vehicle in tunnel is obtained.
Brief description of the drawings
The present invention is explained in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the automobile navigation method schematic flow sheet based on tunnel in the present invention;
Fig. 2 is a kind of embodiment schematic diagram of vehicle navigation apparatus based on tunnel in the present invention;
Fig. 3 is the vehicle navigation apparatus another embodiment schematic diagram based on tunnel in the present invention;
Fig. 4 is the vehicle navigation apparatus another embodiment schematic diagram based on tunnel in the present invention;
Fig. 5 is the vehicle navigation apparatus another embodiment schematic diagram based on tunnel in the present invention.
Reference:
100- vehicle navigation apparatus, 110- picture acquisition modules, 120- computing modules, 121- reference points choose unit, 122- arithmetic elements, 123- feature extraction units, 124- characteristic matching units, 130- judge modules, 140- positional informations are obtained Module.
Embodiment
The automobile navigation method schematic flow sheet based on tunnel provided as shown in Figure 1 for the present invention, specifically, the vehicle is led Boat method is applied to navigation equipment, and vehicle includes capture apparatus, and vehicle is travelled in tunnel.It can be seen that at this Automobile navigation method includes:The picture that S1 is shot according to capture apparatus obtains the travel speed of vehicle;S2 is according to capture apparatus The picture of shooting judges the turn information of vehicle;What S3 was obtained in the travel speed and step S2 according to the obtained vehicles of step S1 The turn information of vehicle judges positional information of the vehicle in tunnel;S4 judges whether according to default according to the positional information of vehicle Route running, if it is not, jumping to step S5;S5 is according to the positional information of vehicle again programme path.
In the automobile navigation method, vehicle enters before tunnel, according to the geographical location information of navigation equipment collection vehicle And temporal information, real-time speed of the vehicle before tunnel is entered is calculated with this.In addition, navigation equipment plans tunnel according to destination The predetermined paths of middle traveling, including tunnel prong turn direction etc..
Vehicle is advanced into behind tunnel by tunnel, and the navigation information of navigation equipment is lost, and is arranged on the shooting of right ahead Equipment shoots picture according to predeterminated frequency immediately.During calculating, at least one reference is chosen in picture is shot first Point (choosing in picture has the object of reference of prominent features as a reference point), then according to the displacement of reference point in the picture of shooting (displacement of retrogressing) and shooting time calculate the travel speed of vehicle in real time.In other embodiments, in the left and right two of vehicle Rearview mirror, the rear of vehicle etc. include capture apparatus, the real time running speed of vehicle are calculated according to the picture of its shooting, really Protect the accuracy of obtained travel speed.If being difficult to find that reference point in the picture that vehicle front is shot, vehicle can be used Left and right sides rearview mirror, the picture that shoots of the rear of vehicle etc. calculated.
In one example, if the capture apparatus of rear view of vehicle shoots the frequency of photo and taken the photograph once for 1 second beats, set according to shooting Standby front and rear two photos shot obtain referring to 7 meters of point backing, then the travel speed for obtaining now vehicle is 25 kilometers/hour. In other instances, capture apparatus can also be taken pictures with other frequencies, and such as every 0.5 second beats is taken the photograph once, every 2 second beats is taken the photograph once Deng being not specifically limited, set according to actual conditions herein.
Calculate after the real time running speed for obtaining vehicle, picture (e.g., the capture apparatus not shot in the same time is extracted respectively Two width pictures of front and rear shooting) characteristic point and the characteristic point extracted is matched, then according to the characteristic point meter of matching The transformational relation between different pictures is calculated, the turn information of vehicle, including angle of turn and turn direction is obtained.
In one example, if the capture apparatus of rear view of vehicle shoots the frequency of photo and taken the photograph once for 1 second beats, two figures are obtained After piece, the SIFT feature or SURF characteristic points of two pictures are extracted successively, afterwards using open CV Brute Force The method of exhaustion or the approximate k nearest neighbor algorithms of FLANN are matched to the SIFT feature extracted in two pictures, then pass through following formula meter The transformational relation between two pictures is calculated, open CV SolvePnPRANSAC functions or PCL ICP is called (Iterative Closest Point, iteration closest approach) algorithm solve the turn information for obtaining vehicle.
Calculating is obtained after the turn information of vehicle, geographical location information, the vehicle entered immediately according to vehicle before tunnel Travel speed and running time calculate and obtain displacement of the vehicle in tunnel, and the turning letter of combining cartographic information and vehicle Breath, obtains positional information of the vehicle in tunnel, and then believe according to the position for entering the predetermined paths of tunnel preplanning and obtaining Breath judges whether vehicle is travelled according to predetermined paths, if so, then continuing to travel, if it is not, then programme path is carried out again Navigation, and give a warning.Furthermore, it is understood that in tunnel, when driver runs into bifurcated mouthful, the picture shot according to capture apparatus Judge the turn information of vehicle, and then judge the bifurcated mouthful of vehicle selection, if correct bifurcated mouthful is have selected, if so, according to pre- If route guidance;Otherwise, according to the cartographic information of storage, programme path again.
A kind of real-time mode schematic diagram of the vehicle navigation apparatus based on tunnel that the present invention is provided is illustrated in figure 2, it should For navigation equipment, and vehicle includes capture apparatus.Before vehicle enters tunnel, navigation equipment collection vehicle enters before tunnel Geographical location information, and the default road that travels in tunnel is planned according to destination.It can be seen that in the automobile navigation Device 100 includes:Picture acquisition module 110, computing module 120 and judge module 130, wherein, computing module 120 is distinguished It is connected with picture acquisition module 110 and judge module 130.
In the automobile navigation method, vehicle enters before tunnel, according to the geographical location information of navigation equipment collection vehicle And temporal information, real-time speed of the vehicle before tunnel is entered is calculated with this.In addition, navigation equipment plans tunnel according to destination The predetermined paths of middle traveling, including tunnel prong turn direction etc..
Vehicle is advanced into behind tunnel by tunnel, and the navigation information of navigation equipment is lost, and capture apparatus is immediately according to default frequency Rate shoots picture.Picture acquisition module 110 in vehicle navigation apparatus 100 (is such as arranged on right ahead/left side from capture apparatus Rear of right sided mirror unit/vehicle etc.) obtain shoot picture after, computing module 120 is obtained according to picture acquisition module 110 The picture that takes calculates the turn information of the travel speed for obtaining vehicle and vehicle, then according to the travel speed of vehicle and vehicle Turn information obtains positional information of the vehicle in tunnel;Finally, the vehicle that judge module 130 is obtained according to computing module 120 Positional information judge whether to travel according to predetermined paths, if so, then being travelled according to predetermined paths, otherwise according to vehicle Positional information programme path again.
Above-mentioned embodiment is improved and obtains present embodiment, as shown in figure 3, in the present embodiment, the vehicle Guider 100 includes:Wrapped in picture acquisition module 110, computing module 120 and judge module 130, computing module 120 The reference point for including interconnection chooses unit 121 and arithmetic element 122.
Vehicle is advanced into behind tunnel by tunnel, and the navigation information of navigation equipment is lost, and capture apparatus is immediately according to default frequency Rate shoots picture.Picture acquisition module 110 in vehicle navigation apparatus 100 is after capture apparatus obtains the picture shot, meter Calculate the selection unit 121 of the reference point in module 120 and at least one reference point is chosen in picture (with prominent special in selection picture The object of reference levied is as a reference point), subsequent arithmetic element 122 is according to the displacement (displacement of retrogressing) of reference point in the picture of shooting Calculate the travel speed of vehicle in real time with shooting time.Car is then obtained according to the travel speed of vehicle and the turn information of vehicle Positional information in tunnel;Finally, the positional information for the vehicle that judge module 130 is obtained according to computing module 120 judges Whether travel, if so, then being travelled according to predetermined paths, otherwise advised again according to the positional information of vehicle according to predetermined paths Draw route.In other embodiments, in vehicle left and right sides rearview mirror, the rear of vehicle etc. include capture apparatus, root The real time running speed of vehicle is calculated according to the picture of its shooting, it is ensured that the accuracy of obtained travel speed.If vehicle front Reference point is difficult to find that in the picture of shooting, can use what left and right sides rearview mirror, rear of vehicle of vehicle etc. were shot Picture is calculated.
Above-mentioned embodiment is improved and obtains present embodiment, as shown in figure 4, in the present embodiment, the vehicle Guider 100 includes:Wrapped in picture acquisition module 110, computing module 120 and judge module 130, computing module 120 The reference point for including interconnection is chosen outside unit 121 and arithmetic element 122, in addition to:The feature extraction unit of interconnection 123 and characteristic matching unit 124.
Vehicle is advanced into behind tunnel by tunnel, and the navigation information of navigation equipment is lost, and capture apparatus is immediately according to default frequency Rate shoots picture.Picture acquisition module 110 in vehicle navigation apparatus 100 is after capture apparatus obtains the picture shot, meter Calculate the selection unit 121 of the reference point in module 120 and at least one reference point is chosen in picture (with prominent special in selection picture The object of reference levied is as a reference point), subsequent arithmetic element 122 is according to the displacement (displacement of retrogressing) of reference point in the picture of shooting Calculate the travel speed of vehicle in real time with shooting time.Subsequent feature extraction unit 123 extracts what picture acquisition module 110 was obtained The characteristic point for the picture not shot in the same time, and the different pictures that point is extracted are extracted by the matching characteristic of characteristic matching unit 124 Characteristic point, the characteristic point that arithmetic element 122 is matched according to characteristic matching unit 124 afterwards calculates the conversion between different pictures Relation, so as to obtain the turn information of vehicle.Finally, the position letter for the vehicle that judge module 130 is obtained according to computing module 120 Breath judges whether to travel according to predetermined paths, if so, then being travelled according to predetermined paths, otherwise according to the positional information of vehicle Again programme path.
Above-mentioned embodiment is improved and obtains present embodiment, as shown in figure 4, in the present embodiment, the vehicle Guider 100 is included outside picture acquisition module 110, computing module 120 and judge module 130, in addition to position letter Cease acquisition module 140.
Vehicle is advanced into behind tunnel by tunnel, and the navigation information of navigation equipment is lost, and capture apparatus is immediately according to default frequency Rate shoots picture.Picture acquisition module 110 in vehicle navigation apparatus 100 is after capture apparatus obtains the picture shot, meter Calculate the selection unit 121 of the reference point in module 120 and at least one reference point is chosen in picture (with prominent special in selection picture The object of reference levied is as a reference point), subsequent arithmetic element 122 is according to the displacement (displacement of retrogressing) of reference point in the picture of shooting Calculate the travel speed of vehicle in real time with shooting time.Subsequent feature extraction unit 123 extracts what picture acquisition module 110 was obtained The characteristic point for the picture not shot in the same time, and the different pictures that point is extracted are extracted by the matching characteristic of characteristic matching unit 124 Characteristic point, the characteristic point that arithmetic element 122 is matched according to characteristic matching unit 124 afterwards calculates the conversion between different pictures Relation.Afterwards, arithmetic element 122 according to vehicle enter tunnel before geographical location information, the travel speed and traveling of vehicle when Between calculate obtain displacement of the vehicle in tunnel, the vehicle that position information acquisition module 140 is calculated according to arithmetic element 122 is in tunnel The turn information of displacement in road, combining cartographic information and vehicle, obtains positional information of the vehicle in tunnel.Finally, judge The positional information for the vehicle that module 130 is obtained according to computing module 120 judges whether to travel according to predetermined paths, if so, then pressing Travelled according to predetermined paths, otherwise according to the positional information of vehicle again programme path.
In this course, in tunnel, when driver runs into bifurcated mouthful, the figure that computing module is shot according to capture apparatus Piece judges the turn information of vehicle, and then judges the bifurcated mouthful of vehicle selection, if having selected correct bifurcated mouthful, if so, according to Predetermined paths are navigated;Otherwise, according to the cartographic information of storage, programme path again.

Claims (10)

1. a kind of automobile navigation method based on tunnel, it is characterised in that applied to navigation equipment, the vehicle is set including shooting It is standby, and the vehicle travels in tunnel, the automobile navigation method includes:
The picture that S1 is shot according to capture apparatus obtains the travel speed of vehicle;
The picture that S2 is shot according to capture apparatus judges the turn information of vehicle;
The turn information for the vehicle that S3 is obtained in the travel speed and step S2 according to the obtained vehicles of step S1 judges that vehicle exists Positional information in tunnel;
S4 judges whether to travel according to predetermined paths according to the positional information of vehicle, if it is not, jumping to step S5;
S5 is according to the positional information of vehicle again programme path.
2. automobile navigation method as claimed in claim 1, it is characterised in that specifically include in step sl:
S11 capture apparatus shoots picture according to predeterminated frequency;
S12 chooses at least one reference point in picture is shot;
S13 calculates the travel speed of vehicle according to the displacement and shooting time of reference point in the picture of shooting in real time.
3. automobile navigation method as claimed in claim 1, it is characterised in that specifically include in step s 2:
S21 extracts the characteristic point for the picture not shot in the same time respectively;
S22 matches the characteristic point of different pictures;
S23 calculates the transformational relation between different pictures according to the characteristic point of matching, so that the turn information of vehicle is obtained, it is described Turn information includes angle of turn and turn direction.
4. the automobile navigation method as described in claim 1 or 2 or 3, it is characterised in that also include before step S1:
The geographical location information that S0 navigation equipments collection vehicle enters before tunnel, it is pre- according to what is travelled in the planning tunnel of destination If route.
5. automobile navigation method as claimed in claim 4, it is characterised in that specifically include in step s3:
Geographical location information, the travel speed of vehicle and the running time that S31 enters before tunnel according to vehicle, which are calculated, obtains vehicle Displacement in tunnel;
The turn information of displacements of the S32 according to vehicle in tunnel, combining cartographic information and vehicle, obtains vehicle in tunnel Positional information.
6. the automobile navigation method as described in claim 1 or 2 or 3 or 5, it is characterised in that include in step s 4:
S41 judges whether vehicle have selected correct bifurcated mouthful according to the turn information of vehicle, if so, step S42 is jumped to, it is no Then jump to step S5;
S42 navigates according to predetermined paths.
7. a kind of vehicle navigation apparatus based on tunnel, it is characterised in that applied to navigation equipment, the navigation equipment collecting vehicle The geographical location information entered before tunnel, and the predetermined paths that travel in tunnel, the vehicle bag are planned according to destination Capture apparatus is included, the vehicle navigation apparatus includes:
Picture acquisition module, for obtaining the picture shot from capture apparatus;
Computing module, the picture for being obtained according to picture acquisition module calculates the travel speed for obtaining vehicle and the turning of vehicle Information, and obtain positional information of the vehicle in tunnel for the travel speed and the turn information of vehicle according to vehicle;
Judge module, the positional information of the vehicle for being obtained according to computing module judges whether to travel according to predetermined paths.
8. vehicle navigation apparatus as claimed in claim 7, it is characterised in that the computing module includes:
Reference point chooses unit, for choosing at least one reference point in the picture that picture acquisition module is obtained;
Arithmetic element, the displacement of vehicle is calculated for choosing position of the reference point of module selection in picture according to reference point, And displacement according to vehicle and shooting time calculate the travel speed of vehicle in real time.
9. vehicle navigation apparatus as claimed in claim 8, it is characterised in that also include in the computing module:
Feature extraction unit, the characteristic point of the picture not shot in the same time for extracting the acquisition of picture acquisition module;
Characteristic matching unit, the characteristic point for the different pictures that point is extracted is extracted for matching characteristic;
The arithmetic element calculates the transformational relation between different pictures according to the characteristic point of characteristic matching units match, so that To the turn information of vehicle.
10. vehicle navigation apparatus as claimed in claim 9, it is characterised in that also include position in the vehicle navigation apparatus Data obtaining module, wherein,
Geographical location information, the travel speed of vehicle and the running time that the arithmetic element enters before tunnel according to vehicle are calculated Obtain displacement of the vehicle in tunnel;
Displacement of the vehicle that the position information acquisition module is calculated according to arithmetic element in tunnel, combining cartographic information and car Turn information, obtain positional information of the vehicle in tunnel.
CN201710250965.XA 2017-04-18 2017-04-18 A kind of automobile navigation method and its device based on tunnel Pending CN107063282A (en)

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CN110164164A (en) * 2019-04-03 2019-08-23 浙江工业大学之江学院 The method for identifying complicated road precision using camera shooting function enhancing Mobile Telephone Gps software
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Publication number Priority date Publication date Assignee Title
CN110967006A (en) * 2018-09-28 2020-04-07 巴拿拿科技(香港)有限公司 Navigation positioning method and device based on tunnel map, storage medium and terminal equipment
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CN111323038A (en) * 2020-03-27 2020-06-23 新石器慧通(北京)科技有限公司 Method and system for positioning unmanned vehicle in tunnel and electronic equipment
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CN115762208A (en) * 2022-11-08 2023-03-07 中汽创智科技有限公司 Method, device and equipment for controlling running of vehicles in tunnel

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Application publication date: 20170818