CN101122466A - Electronic map track and its video data memory and inquiring method - Google Patents
Electronic map track and its video data memory and inquiring method Download PDFInfo
- Publication number
- CN101122466A CN101122466A CNA2006101096030A CN200610109603A CN101122466A CN 101122466 A CN101122466 A CN 101122466A CN A2006101096030 A CNA2006101096030 A CN A2006101096030A CN 200610109603 A CN200610109603 A CN 200610109603A CN 101122466 A CN101122466 A CN 101122466A
- Authority
- CN
- China
- Prior art keywords
- video
- track
- data
- framing
- file
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Television Signal Processing For Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
The invention discloses an electronic map trajectory and video data storing method. The method includes steps that the set system time of a location sensor is in accordance with the set system time of a camera. The synchronous trajectory data documents and video documents are copied in an optical disk, which is given a unique label. The trajectory data documents are converted to be a road graph layer form and the code of the optical disk is regarded as an attribute of the road graph layer. The road graph layer is referred to a layer for storing line map road elements in the electronic map. The road graph layer is slit into a plurality of framings. The framings are stored in a map framing database. The relative query method includes that the latitude and longitude coordinates of the roads to be queried are obtained. The framings of the roads are calculated according to the latitude and longitude coordinates. The label of the optical disk for storing the video documents of the roads is obtained according to the codes of the framings. The optical disk is found according to the label of the disk and the trajectory and the video data are read. The invention can improve the safe performance of the data and save storing media.
Description
Technical field
The present invention relates to the map of navigation electronic field, refer to a kind of track of electronic chart and the storage and the querying method of video data thereof especially.
Background technology
In the map of navigation electronic field, obtaining accurately, detailed road geographic position and peripheral information is vital.Now, adopt the method for field measurement usually, as shown in Figure 3, promptly by installing and locating sensor 4 (as GPS, inertial navigation etc.) and digital camera 1 on vehicle.Driver C controls vehicle ', camera operation person B operand word shooting 11, notebook operator A operation PC.
Described alignment sensor 4 is used to measure the running orbit of vehicle to obtain the geographic position data of vehicle place road; Described digital camera 1 is used for taking in real time the video image of road peripheral information.Indoor electronics map edit personnel edit electronic map road and relevant information data according to the track data and the video image that are obtained, can obtain road geographic position and peripheral information accurately and reliably.
The track of prior art electronic chart and the storage means of video data thereof comprise the steps:
Obtain the data of the running orbit of vehicles by the vehicle positioning sensor on the vehicle that travels on road to be measured 4, simultaneously vehicle-mounted digital video camera 1 information of taking the road periphery;
Track data file and video file are carried out classifying and numbering and be deposited in the database of hard disk by rules such as address or times.
Correspondingly, when editing or inquiring about certain bar road, transfer corresponding track data file and video file according to numbering, track and video are carried out playback, operator therefrom obtains the relevant information of road and periphery.
The track of prior art electronic chart and the storage of video data thereof and querying method have following shortcoming:
At first since with video file storage in the database of hard disk, the hard disk resource cost is huge, the data backup workload is big, data security is poor, hard disk is if there is damage then to need full recovery.The road video data capacity in the whole nation is in TG level (1000G).
Secondly, do not consider the correlativity between the data, as the data of a road duplicate measurements, the data of adjacent road all are isolated the storages.When needs are inquired about the track of a certain road correspondence and video data, can not utilize coordinate information concrete in the track data to carry out position enquiring fast and accurately, and can only from database, transfer by numbering, whether corresponding check then by playback, therefore can not accurately transfer corresponding data fast, cause inquiry work to be wasted time and energy.
In addition, adopt prior art can not guarantee that track data and video file are corresponding fully one by one, make that its corresponding video image of point in the electronic chart is consistent at any time.
Moreover, because video file is to leave in the database of hard disk, also be in the database server, when needs are edited it, video file need be copied on editor's the machine from database server, and the capacity of video data is very big, therefore need expends a large amount of time.
Summary of the invention
The problem to be solved in the present invention provides a kind of track of the electronic chart that can improve electronic map data security and conserve memory media resource and the storage means of video data thereof.
Another problem that the present invention will solve provides the track of the fast electronic chart of a kind of inquiry velocity and the querying method of video data thereof.
In order to address the above problem, the technical scheme of the track of electronic chart of the present invention and the storage means of video data thereof is, carries out data acquisition by the vehicle that alignment sensor and video camera are installed, and comprises the steps:
1) system time of described alignment sensor of setting and described video camera is consistent;
2) track data that described alignment sensor is gathered forms the track data file, and the video data that described video camera is taken forms video file simultaneously;
3) with synchronous track data file with CD is gone in the video file imprinting and give described CD unique label;
4 become mileage chart layer form with described track data file conversion and with the coding of a described CD attribute as the mileage chart layer, described mileage chart layer refers to the layer of wire road element in the storing electronic map;
5) according to certain rule described mileage chart layer is cut into some framings and also gives unique number for each framing;
6) described framing is deposited in the sheet line system database.
Also comprise step 5a after the described step 5)) if described framing exists, corresponding mileage chart layer segment is appended to described framing.
Described step 2) also comprise step 2a after) described track data file of coupling and described video file.
Described framing data storehouse comprises described CD label and described picture number.
Described track data comprises longitude, latitude and time.
Correspondingly, the technical scheme of the querying method of the track of electronic chart of the present invention and video data thereof comprises:
Obtain the latitude and longitude coordinates of road to be checked;
Calculate the framing at its place according to described latitude and longitude coordinates;
Obtain the CD label at the video file place of described road according to the numbering of described framing;
Find described CD to read wherein track and video data according to described CD label.
Compared with prior art, the beneficial effect of the storage of the track of electronic chart of the present invention and video data thereof and querying method is:
At first, deposit track data file and video file in CD, saved storage medium, improved safety of data owing to adopt.
Secondly, the system time of alignment sensor 4 and video camera 1 set consistent, guaranteed the corresponding one by one of track data file and video file, improved the accuracy of electronic chart owing to adopt.
Moreover owing to be subjected to the restriction of transfer rate, the video data of magnanimity transmits by network or disk copy can expend a large amount of time, and is directly then fast a lot of by the visit CD.Thereby the data moving process is fast.
At last, according to the geographic coordinate of certain position, can search track and video information that this position comprises fast.
Description of drawings
Fig. 1 is the process flow diagram of the storage means of the track of electronic chart of the present invention and video data thereof;
Fig. 2 is the process flow diagram of the querying method of the track of electronic chart of the present invention and video data thereof;
Fig. 3 is the synoptic diagram with vehicle of alignment sensor and video camera.
Embodiment
As shown in Figure 1, the track of electronic chart and the storage means of video data thereof are carried out data acquisition by the vehicle that alignment sensor 4 and video camera 1 are installed, and comprise the steps:
1) the described alignment sensor 4 of setting is consistent with the system time of described video camera 1;
2) track data that described alignment sensor 4 is gathered forms the track data file, and the video data that described video camera 1 is taken forms video file simultaneously;
3) with synchronous track data file with CD is gone in the video file imprinting and give described CD unique coding;
4) described track data file conversion is become mileage chart layer form and with the coding of a described CD attribute as the mileage chart layer, described mileage chart layer refers to the layer of wire road element in the storing electronic map;
5) according to certain rule described mileage chart layer is cut into some framings and also gives unique number for each framing;
6) described framing is deposited in the sheet line system database.
From the above, be set as consistent by system time with alignment sensor 4 and video camera 1, can make that just certain position and the corresponding video file thereof on the electronic chart can be corresponding one by one so that the time of the video file that track data file that alignment sensor 4 obtains and video camera 1 obtain is consistent.After obtaining track data file and video file, it is deposited in the CD and encode for CD.And then the track data file conversion become mileage chart layer form and with the coding of CD a attribute as the mileage chart layer.Video file in track data file and the CD can be coupled together by described attribute field.Next, described mileage chart layer is cut into some framings and gives unique number for each framing, can adopt rectangular mapsubdivision, also can adopt warp and weft framing or other modes for rule according to certain rule.At last, framing is deposited in the sheet line system database, promptly finished the storage of the track and the video data thereof of electronic chart.Can be for the track data file with binary form or the storage of other arbitrary form.For the purpose of further safety, also can encrypt the track data file.
As shown in Figure 1, the present invention also comprises step 5a after described step 5)) if described framing exists, corresponding mileage chart layer segment is appended to described framing.That is to say, the mileage chart layer is carried out framing after, if the framing that obtains of cutting exists, directly the data supplementing with this segment path figure layer get final product in this framing, has avoided repetition like this, the while has also been saved storage medium.
In addition, in described step 2) after also comprise step 2a) coupling described track data file and described video file.Though in step 1), the system time setting of alignment sensor 4 and video camera 1 has been become consistent, might their time life period intervals of starting working, it is a little inconsistent to make track data file and video file exist.By step 2a) can make the track data file corresponding fully one by one this a little inconsistently also eliminated with video file.
At least comprise described CD label and described picture number for described framing data storehouse.Just can inquire corresponding CD according to picture number like this.Described framing data storehouse also comprises the city name, acquisition time of collection or the like information.
Comprise longitude, latitude and time for described track data.Just each tracing point of electronic chart is by longitude, latitude and time representation.
Be that example describes technical scheme of the present invention in detail with the track of the electronic chart of certain company and the storage means of video data thereof below.
16 o'clock on the 23rd November in 2005, the track data file of gathering in North 4th Ring Road, Beijing (11231601.tdf) was stored with binary file.For convenience of explanation, convert binary file to text formatting at this:
418471.393588，144729.809388，2005-11-23?16:01:41
418471.986412，144729.822945，2005-11-23?16:01:42
418472.626809，144729.836147，2005-11-23?16:01:43
418473.283644，144729.850187，2005-11-23?16:01:44
418473.930770，144729.864749，2005-11-23?16:01:45
418474.553708，144729.877025，2005-11-23?16:01:46
418475.155082，144729.886150，2005-11-23?16:01:47
418475.733974，144729.892883，2005-11-23?16:01:48
…?…
418454.503327，144729.756337，2005-11-23?17:08:17
418454.223052，144729.748274，2005-11-23?17:08:18
418453.951706，144729.740889，2005-11-23?17:08:19
418453.689490，144729.733580，2005-11-23?17:08:20
In this trail file, each tracing point is by three kinds of information representations, the longitude that is followed successively by tracing point is (as 418471.393588, unit: second), latitude is (as 144729.809388, unit: second) and time (2005-11-2316:03:41, represent 16: 03: 41 on the 23rd November in 2005), the time interval of adjacent track point is 1 second.The zero-time of track data file is 16: 01: 41 on the 23rd November in 2005, and the concluding time is 17: 08: 20 on the 23rd November in 2005
Corresponding video file is 11231602.mpg, and the zero-time of video file is 16: 02: 00 on the 23rd November in 2005, and the concluding time is 17: 08: 00 on the 23rd November in 2005.
Subsequently, track data file and video file are mated, get identical part of both times, different parts are reduced.In the last example with before 16: 02: 00 on the 23rd November in 2005 in the track data file and 17: 08: 00 on the 23rd November in 2005 later track data reduce, promptly finished track data file and video file fully synchronously.
When track and video fully synchronously after, adopt the des encryption algorithm to encrypt trail file 11231601.tdf, CD is gone in trail file and video file imprinting after encrypting, add a unique coding according to gathering address and time, can finish numbering to CD, this routine CD is numbered: Beijing _ North 4th Ring Road _ 20051123_A001, will number with the CD pen write on imprint CDs on.
Then, the tracing point of track data file (11231601.tdf) is linked to be a curve (road) successively, this curve negotiating GIS platform (as mapobjects) is converted to the mileage chart layer (11231601.shp of shape form, 11231601.shx, 11231601.dbf), wherein, 11231601.shp is used to represent positional information, i.e. the information of the longitude of each tracing point and latitude; 11231601.shx be used to represent index information; 11231601.dbf be used to represent other information of tracing point.Then CD is numbered the value of Beijing _ North 4th Ring Road _ 20051123_A001 as CD number field (cd_NO) in the 11231601.dbf table.
Then, CD is put into the pane that CD server is designated Beijing _ 20051123.
Below the mileage chart layer is carried out framing.
According to " national primary scale topomap framing and numbering ", 1: 25000 engineer's scale is cut into sheet line system K50F046018, K50F046019 to this example with 11231601.shp.The data of these two framings are deposited in the sheet line system database.
For the ease of retrieval, this example has been set up a concordance list that contains CD label and picture number, and CD is numbered Beijing _ North 4th Ring Road _ 20051123_A001 and picture number K50F046018, K50F046019 add in this concordance list.
As shown in Figure 2, the track of electronic chart of the present invention and the querying method of video data thereof comprise the steps:
10) obtain the latitude and longitude coordinates of road to be checked;
20) calculate the framing at its place according to described latitude and longitude coordinates;
30) obtain the CD label at the video file place of described road according to the numbering of described framing;
40) find described CD to read wherein track and video data according to described CD label.
In the time need inquiring about to the track of electronic chart and video data thereof, at first obtain the latitude and longitude coordinates of road to be checked, can calculate the framing at road to be checked place according to the latitude and longitude coordinates that is obtained, can obtain the CD label at the video file place of road to be checked according to the numbering of described framing, can find this CD according to this CD label thus, thereby read track and video data in this CD.
For above-mentioned example, when operating personnel in the industry will North 4th Ring Road, editor Beijing certain bar road the time, position by this road place of click, system detects the coordinate figure of mouse correspondence, this example is: (longitude: 418471.9863, latitude: 144729.8230), by this according to " national primary scale topomap framing and numbering " and the used engineer's scale of cutting mileage chart layer, this routine engineer's scale is 1: 25000, calculates the framing at its place by following expression formula.
In following expression formula, the integral part that y is got in Int (y) expression, “ " to represent to divide exactly, " * " expression is multiplied each other, and Mod represents complementation.
Longitude: x=418471.9863,
Latitude: y=144729.8230
A=Int (y) (4*3600)+1, a=11, in A, B, C, D... English alphabet order, the 11st character is K, so first character of picture number is K
B=Int (x) (6*3600)+31, b=50, so second and third character of picture number is 50
1: 25000 engineer's scale corresponding characters is F, so the 4th character of character number is F
Modv=Int (y) Mod (4*3600) gets modv=729
Shangv=modv (5*60), shangv=2
C=48-shangv gets c=46, and three fronts of less than mend 0, so the 5th, 6,7 character of picture number is 046
Modv2=Int (x) Mod (6*3600) gets modv2=8071
Shangv2=modv2 (7*60+30), shangv2=17
D=shangv2+1 gets d=18, and 3 fronts of less than mend 0, so 8,9,10 characters of picture number are 018
Obtaining character number at last is K50F046018.
Therefore, the framing at this place is K50F046018, call this track framing, search for this point all interior path locus of certain limit on every side, the CD label of checking these road correspondences is: Beijing _ North 4th Ring Road _ 20051123_A001, take CD according to the CD label, can finish the inquiry work of track and video data fast.
Claims (6)
1. the storage means of the track of an electronic chart and video data thereof is carried out data acquisition by the vehicle that alignment sensor and video camera are installed, and it is characterized in that, comprises the steps:
1) system time of described alignment sensor of setting and described video camera is consistent;
2) track data that described alignment sensor is gathered forms the track data file, and the video data that described video camera is taken forms video file simultaneously;
3) with synchronous track data file with CD is gone in the video file imprinting and give described CD unique label;
4) described track data file conversion is become mileage chart layer form and with the coding of a described CD attribute as the mileage chart layer, described mileage chart layer refers to the layer of wire road element in the storing electronic map;
5) according to certain rule described mileage chart layer is cut into some framings and also gives unique number for each framing;
6) described framing is deposited in the sheet line system database.
2. storage means as claimed in claim 1 is characterized in that, also comprises step 5a after the described step 5)) if described framing exists, corresponding mileage chart layer segment is appended to described framing.
3. storage means as claimed in claim 2 is characterized in that, described step 2) after also comprise step 2a) coupling described track data file and described video file.
4. storage means as claimed in claim 3 is characterized in that, described framing data storehouse comprises described CD label and described picture number.
5. as described any one storage means of claim 1 to 4, it is characterized in that described track data comprises longitude, latitude and time.
6. the electronic chart track of depositing according to described any one storage means of claim 1 to 5 and the querying method of video data thereof is characterized in that, comprise the steps:
Obtain the latitude and longitude coordinates of road to be checked;
Calculate the framing at its place according to described latitude and longitude coordinates;
Obtain the CD label of looking face file place of described road according to the numbering of described framing;
Find described CD to read wherein track and video data according to described CD label.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101096030A CN101122466A (en) | 2006-08-09 | 2006-08-09 | Electronic map track and its video data memory and inquiring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101096030A CN101122466A (en) | 2006-08-09 | 2006-08-09 | Electronic map track and its video data memory and inquiring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101122466A true CN101122466A (en) | 2008-02-13 |
Family
ID=39084896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101096030A Pending CN101122466A (en) | 2006-08-09 | 2006-08-09 | Electronic map track and its video data memory and inquiring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101122466A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893443A (en) * | 2010-07-08 | 2010-11-24 | 上海交通大学 | System for manufacturing road digital orthophoto map |
| CN101999237A (en) * | 2008-04-11 | 2011-03-30 | 日本电气株式会社 | Movement history reference system, movement information registration server, information collection server, movement history reference method and program |
| CN101382435B (en) * | 2008-09-17 | 2012-02-08 | 深圳市凯立德科技股份有限公司 | navigation device and navigation method with track switching function |
| CN104006816A (en) * | 2014-06-06 | 2014-08-27 | 四川宝英光电有限公司 | Trajectory tracking and replaying method |
| CN106022527A (en) * | 2016-05-27 | 2016-10-12 | 河南明晰信息科技有限公司 | Trajectory prediction method and device based on map tiling and LSTM cyclic neural network |
| CN106998476A (en) * | 2017-04-06 | 2017-08-01 | 南京三宝弘正视觉科技有限公司 | A kind of video inspection method and device based on GIS-Geographic Information System |
| CN107729511A (en) * | 2017-10-24 | 2018-02-23 | 南京市测绘勘察研究院股份有限公司 | A kind of customizable geographic information data rectangular mapsubdivision method |
| CN108810817A (en) * | 2018-05-18 | 2018-11-13 | 东南大学 | Indoor map based on mobile crowdsourcing model generates and track encryption method |
| CN109634507A (en) * | 2018-12-03 | 2019-04-16 | 广东国图勘测地理信息有限公司 | It is a kind of can touch-control electronic map control method and device |
| CN110243368A (en) * | 2019-04-29 | 2019-09-17 | 丰疆智能科技研究院(常州)有限公司 | The driving trace of intelligent agricultural machinery establishes system and its application |
| CN111324825A (en) * | 2020-01-20 | 2020-06-23 | 北京百度网讯科技有限公司 | Method and device for searching target person |
| CN111798508A (en) * | 2020-09-09 | 2020-10-20 | 四川长园工程勘察设计有限公司 | Distribution line path diagram framing method |
| CN112541045A (en) * | 2019-09-23 | 2021-03-23 | 北京四维图新科技股份有限公司 | Electronic map data processing method and device and electronic equipment |
-
2006
- 2006-08-09 CN CNA2006101096030A patent/CN101122466A/en active Pending
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101999237A (en) * | 2008-04-11 | 2011-03-30 | 日本电气株式会社 | Movement history reference system, movement information registration server, information collection server, movement history reference method and program |
| CN101999237B (en) * | 2008-04-11 | 2013-07-24 | 日本电气株式会社 | Movement history reference system, movement information registration server, information collection server, movement history reference method and program |
| CN101382435B (en) * | 2008-09-17 | 2012-02-08 | 深圳市凯立德科技股份有限公司 | navigation device and navigation method with track switching function |
| CN101893443B (en) * | 2010-07-08 | 2012-03-21 | 上海交通大学 | System for manufacturing road digital orthophoto map |
| CN101893443A (en) * | 2010-07-08 | 2010-11-24 | 上海交通大学 | System for manufacturing road digital orthophoto map |
| CN104006816A (en) * | 2014-06-06 | 2014-08-27 | 四川宝英光电有限公司 | Trajectory tracking and replaying method |
| CN104006816B (en) * | 2014-06-06 | 2016-09-07 | 王洁 | A kind of track following back method |
| CN106022527A (en) * | 2016-05-27 | 2016-10-12 | 河南明晰信息科技有限公司 | Trajectory prediction method and device based on map tiling and LSTM cyclic neural network |
| CN106998476B (en) * | 2017-04-06 | 2020-06-30 | 南京三宝弘正视觉科技有限公司 | Video viewing method and device based on geographic information system |
| CN106998476A (en) * | 2017-04-06 | 2017-08-01 | 南京三宝弘正视觉科技有限公司 | A kind of video inspection method and device based on GIS-Geographic Information System |
| CN107729511A (en) * | 2017-10-24 | 2018-02-23 | 南京市测绘勘察研究院股份有限公司 | A kind of customizable geographic information data rectangular mapsubdivision method |
| CN107729511B (en) * | 2017-10-24 | 2020-12-01 | 南京市测绘勘察研究院股份有限公司 | Customizable geographic information data rectangular framing method |
| CN108810817A (en) * | 2018-05-18 | 2018-11-13 | 东南大学 | Indoor map based on mobile crowdsourcing model generates and track encryption method |
| CN108810817B (en) * | 2018-05-18 | 2020-10-27 | 东南大学 | Indoor map generation and track encryption method based on mobile crowdsourcing mode |
| CN109634507A (en) * | 2018-12-03 | 2019-04-16 | 广东国图勘测地理信息有限公司 | It is a kind of can touch-control electronic map control method and device |
| CN109634507B (en) * | 2018-12-03 | 2021-04-13 | 广东国图勘测地理信息有限公司 | Touch electronic map control method and device |
| CN110243368A (en) * | 2019-04-29 | 2019-09-17 | 丰疆智能科技研究院(常州)有限公司 | The driving trace of intelligent agricultural machinery establishes system and its application |
| CN112541045A (en) * | 2019-09-23 | 2021-03-23 | 北京四维图新科技股份有限公司 | Electronic map data processing method and device and electronic equipment |
| CN112541045B (en) * | 2019-09-23 | 2024-06-04 | 北京四维图新科技股份有限公司 | Electronic map data processing method and device and electronic equipment |
| CN111324825A (en) * | 2020-01-20 | 2020-06-23 | 北京百度网讯科技有限公司 | Method and device for searching target person |
| CN111324825B (en) * | 2020-01-20 | 2024-04-30 | 北京百度网讯科技有限公司 | Method and device for searching target personnel |
| CN111798508A (en) * | 2020-09-09 | 2020-10-20 | 四川长园工程勘察设计有限公司 | Distribution line path diagram framing method |
| CN111798508B (en) * | 2020-09-09 | 2020-11-24 | 四川长园工程勘察设计有限公司 | Distribution line path diagram framing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101122466A (en) | Electronic map track and its video data memory and inquiring method | |
| CN110222445B (en) | BIM and design information based integration, collaborative design and delivery method and system | |
| CN104008212B (en) | Method for storing IOT time series data related to geographical location information | |
| CN102607577B (en) | A kind of increment updating method of map of navigation electronic, Apparatus and system | |
| CN108898668A (en) | The creation of the mapped system of two-dimentional drawing and threedimensional model and Map Searching method | |
| CN110109896B (en) | UAV flight parameter intelligent reduction method | |
| CN112463908B (en) | Cadastre rapid checking system and method based on electronic access point and unmanned aerial vehicle | |
| EP3637057B1 (en) | Method, device, system and storage medium for storing and loading visual positioning map | |
| CN116680648B (en) | Service fusion data generation method and system for digital twin city | |
| CN101842662A (en) | Verification of digital maps | |
| CN104102677A (en) | Method and device for updating data of electronic map and server | |
| CN101436211A (en) | City road network data increment recognizing method and increment updating method based on buffer zone analysis | |
| CN110867090B (en) | Method and system for calculating average travel time between adjacent bus physical stops based on bus-mounted GPS data | |
| CN110274601A (en) | The method and device of place longitude and latitude violating the regulations is obtained by wheelpath | |
| CN107229682A (en) | A kind of taxi position data processing method based on large database | |
| CN111488634A (en) | Railway survey design delivery result management method based on 3DGIS + BIM | |
| CN111522892A (en) | Geographic element retrieval method and device | |
| Quiroga et al. | Travel time information using global positioning system and dynamic segmentation techniques | |
| Nguyen et al. | A multi-perspective approach to interpreting spatio-semantic changes of large 3D city models in CityGML using a graph database | |
| CN102252685A (en) | Navigation electronic map data processing method and storage method based on same | |
| CN104063421A (en) | Retrieval method and device for mass transportation remote sensing data | |
| CN115375864B (en) | Unmanned aerial vehicle-based high-speed railway completion acceptance method | |
| Andersen et al. | An advanced data warehouse for integrating large sets of GPS data | |
| CN111581306B (en) | Driving track simulation method and device | |
| CN103198148A (en) | Integrated management and multimedia release method for map publishing data |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080213 |