WO2017036676A2

WO2017036676A2 - Method for converting point-based data into segment-based data for the attribution of route segments in a navigation device

Info

Publication number: WO2017036676A2
Application number: PCT/EP2016/067745
Authority: WO
Inventors: Katharina JUELGE; Jan Wietse Balkema
Original assignee: Robert Bosch Gmbh
Priority date: 2015-09-03
Filing date: 2016-07-26
Publication date: 2017-03-09
Also published as: DE102015216916A1; WO2017036676A3

Abstract

The invention relates to a method for converting point-based data into segment-based data at intersections (10) that have at least a first branch (20) and a second branch (30) on a road map (1) of a navigation device (100) or a back end in order to attribute route segments (A, B, C, D, E) on the road map (1). According to the invention, a correct path along the first branch (20) or the second branch (30) is verified by an operator.

Description

description

title

Method for converting point-based information into

segment-based information for the attribution of route segments in a navigation device

The present invention relates to a method for converting point-based information into segment-based information at intersections with at least one first branch and one second branch in one

Road map of a navigation device or a backend for the attribution of route segments of the road map.

STATE OF THE ART

DE 10 2009 017 731 A1 describes a self-learning road map for a navigation device, and sensors are used which record topographical data of the environment, and a creation unit is used to create the digital map based on the determined topographic data. With a memory unit, the created digital maps can be stored. For example, map data provided on a data carrier for a vehicle, such as a navigation CD-ROM, may be supplemented with additional data. This additional data is gradually collected during the operation of the vehicle and always stored again, so that the digital map is enriched more and more. With a multiple travel on a route, the data can thus be refined and the quality of the existing digital maps can be improved, since each time the same route is traveled, the sensor unit again determines data of the environment from which the creation unit can create an improved digital map. Thus, an example is given that a basic data record can be enriched with additional data that can be collected during the driving operation of a vehicle, for example.

EP 0 947 970 A1 describes a method for generating an integrated representation of traffic routes and public transport stops. The method relies on providing a first set of data that describing geographical traffic routes, each traffic route being defined by a sequence of segments. Furthermore, a second amount of data is to be provided, which represents the stops of the public transport, and it is to be identified a segment to which a particular stop is assigned. Furthermore, the distance should be determined

Stop are calculated from an endpoint of the identified segment, whereupon an entry of a reference of the specific stop is made to the identified segment. Finally, the above steps repeat for the second data set, whereby the third data set contains a corresponding number of references. It also states that the segment can have attributes that are based on the

Speed class of the segment, indicating the type of traffic route, such as tunnel, bridge, the number of lanes, on the type of traffic route, such as highway, highway, highway, rail, waterway, allowable loads and / or parking regulations , These hints are often punctual information that is for a certain

Section and thus have to be determined

Track section must be rolled out.

The punctual information must be converted into

Route information, wherein the conversion according to a way of rolling out the punctual information into linear information as attributes to the

Segments in the digital map done. For example, there is a speed limit sign as point information on a segment. Consequently, the speed must be valid for a certain distance, for example until the speed is canceled or a new, different speed is displayed. The question of whether the speed also at junctions, turns,

Junctions and the like is often not finalized. In the data acquisition for the production of the digital map they are

Point information is thus captured, with the position of, for example

Speed limit signs along a road, however, too

Weight class restrictions for driving on the road or the like can be given as examples. In the map making process, this point information is then scrolled along the road so that the point-based Information is converted into a linear information. In this

Coasting process raises the question, to where, for example, the

Speed limit sign should be rolled out and for which path at an intersection the speed limit is still valid. For example, both branches at an intersection may be subject to the same speed limit or, for example, in the follow-up of a federal highway, the

Speed limit further, whereas at a turn into a dirt road, a private road or the like, the speed limit is no longer valid.

For this so-called segment attribution exist semiautomatic methods that allow a sufficient quality, but are very expensive, with fully automatic methods are known, which are usually faulty. The semi or fully automatic methods are based on the information from sensors for powering a processor unit, and from the

Information collected by the sensors can be used to generate segment attribution with some reliability.

In order to carry out the conversion, that is to say the rolling out of the point-based information, it is necessary to know which segments, ie which turns at an intersection, must be attributed. This is achieved by a so-called path tracking. The validity of point-based information in the form of traffic signs, the

Show speed limits or overturn bans is

For example, in Germany defined as a so-called route requirement, but not defined beyond doubt, what makes a route actually and whether this includes, for example, branches. The segment attribution is thus continued especially at intersections. Thus, with the current state of the art of digital cards, it is not unquestionably possible to set up a set of criteria that can be used with the semi-automatic or the

fully automatic procedures make the continuation clear in any case. In addition, the criteria vary from country to country.

GB 2 487 263 A describes a method of encoding paths in a digital map for the purpose of location referencing. These paths are through a fully automatic route search from a starting point to an end point calculated according to a defined set of attributes. A reliable one

Segment attribution is also not possible at intersections.

Thus, attempts to fully automatically define the path for rolling out using an attribute set are only partially successful. In each instance of such an attribute set, counter-examples can be found in reality in which rolling does not occur along a path, which a human driver would perceive as a distance command.

DISCLOSURE OF THE INVENTION

The object of the invention is to improve a method for converting point-based information into segment-based information for

Attributing route segments in a navigation device. In particular, a reliable attribution of distance segments in or after an intersection in a road map is to be achieved.

This object is achieved starting from a method according to the preamble of claim 1 and starting from a navigation device according to claim 8 with the respective characterizing features. Advantageous developments of the invention are specified in the dependent claims.

The invention includes the technical teaching that at least one correct path along the first branch or the second branch is verified at an intersection by an operator.

An intersection in the sense of the present invention does not have to be pronounced in the actual sense as an intersection between two roads and it can also be an intersection, a turn, a fork or the like. The verification describes an information input process by an operator, whereby for the

Navigation device clarifies whether at least one of the branches can be attributed accordingly. Thus, the verification can be understood as confirmation or as a correction, for example, if the navigation device already makes a proposal to the operator, which branch should be attributed accordingly. The verification or verification thus describes a definition of the correct path by the operator to the navigation device.

According to the invention thus the rolling out of the

point-based information in intersections supplemented by a one-time manual process by the operator, for example by the driver of a vehicle that is equipped with the navigation device or in which the navigation device is carried. This one-time encoding of the correct history of segment attribution at intersections becomes the

Decision as to which path is traced by the intersection in subsequent coasting procedures. Once encoded paths can then be used as often as required for rolling out point-based information.

Advantageously, the correct path for the segment-based information is stored in a data memory of the navigation device and provided for further uses. The data memory may for example be part of the navigation device, and provided by the operator

Information can be used to already have a record of the

However, the method can also be carried out independently of the navigation device, for example when this is switched off, and the navigation device in the sense of the present invention represents any further form of driver assistance system. In particular, the storage and provision of the data obtained can also be done in the Backend, for example, with a card manufacturer via the Internet connection, so that the provision of the data obtained to a variety of users easier.

According to a further advantageous embodiment of the method, the communication between the navigation device and the operator is carried out by means of a communication interface, in particular by means of an operating display. By means of the communication interface can by the

Navigation device to the operator a suggestion of a possible path for the correct attribution are issued, wherein the operator verifying by means of the communication interface, for example manually or phonetically. If the communication interface is based on an operator display, a manual verification can be carried out

for example, by the operator tapping the correct path displayed in the operator display. With phonetic verification, it is possible to verify the correct path via speech recognition. The operator can thus be displayed by means of the communication interface, a selection of possible paths such that the operator with a one-time operation, so for example, touching the

Operator displays or the pronunciation of the right path, this can verify.

Furthermore, it is possible for the segment-based information to be stored independently of the card via the correct path in a data memory of the navigation device or of a backend. For example, if the navigation device is not turned on in the vehicle, the

Possibility to capture the segment-based information to verify by the operator and store it in the data memory accordingly. In this case, the segment-based information of the point-based information can be assigned, wherein the assignment can be carried out according to card independent.

In the present case, any back-to-back device, in particular a network-connected or telecommunications-connected device, is considered, for example a central server of a card provider. The information can be output and stored to this server via data transmission, for example via telecommunications equipment and / or via the Internet. Thus, it is also conceivable with advantage that one or more stored paths are exported to the backend or imported from the backend, in particular card-independent in the navigation device.

The segment-based information becomes, according to another advantage, the correct path in the data store along with location information

stored, for example, based on GPS data. According to a further advantageous embodiment is with the

Communication interface of the operator crossing with the

display at least a first branch and the second branch, wherein the verification by the operator by a manual tap of the correct branch can be performed. This type of verification is particularly advantageous when the operator display a

includes touch-sensitive screen.

The invention further relates to a navigation device for carrying out a method for converting point-based information into segment-based information at intersections with at least one first branch and a second branch in a road map of the

Navigation device for the attribution of route segments of the road map, and it is provided that a correct path along the first branch or the second branch is verifiable by an operator.

Advantageously, the navigation device has a data memory in which manually entered information about a correct path for the

segment-based information can be stored. Furthermore, it is advantageous that the navigation device has a communication interface, by means of which the operator a suggestion of a possible path to the right

Attribution is outputable.

Advantageous Embodiment of the Invention

Further, measures improving the invention will be described in more detail below together with the description of a preferred embodiment of the invention with reference to FIGS. 1 shows a schematic view of an intersection, which follows a basic path and divides the basic path into a first branch and into a second branch,

Figure 2 is a schematic representation of a process flow for

Execution of the method of the present invention and 3 shows an exemplary representation of a navigation device with a communication interface and with a data memory.

A path in the sense of the present invention defines a set of links arranged geometrically in succession. This will be the

Distance segments A, B, C, D, E and F in the sense of distance-based

Represents information. Paths are encoded as attributes on segments, so each path is unique. Each path may serve as a basis for converting a point-based information 60 located at this point into route-based information 70. The paths in the road map 1 are coded without actual attribute value or the attribute value itself is considered volatile. As attribute values, for example

Speed data along the coded section A, B, C, D, E and F apply. The stored paths serve as input for the actual coasting step for example, a designated by a traffic sign specific speed limit, the traffic sign reproduces the point-based information 60.

In contrast to the concrete content of the attribute information, which can change frequently, the information which distance segments A, B, C, D, E and F are to be attributed in the context of a roll-out method, is relatively stable and this changes, for example, only one structural change of

Path segments A, B, C, D, E, and F. The content of the attributes changes as soon as a new sign is set up and thus another point-based information 60 is added or point-based information 60 is removed.

The embodiment in Figure 1 shows a road map 1, from which a path branches off. The track segments A and B represent the area of the main road before the branch, and the track segments C and D form the first

Branch 20 and enter the area after the turn of the path again. The dirt road itself forms the second branch 30 and is through the

Distance segments E and F represents. At the segment B in

Driving direction to the right in the sketch is a point-based

Information 60, which as an example a speed limit for 70 km / h represents, which is canceled at the end of the segment segment D again.

For the encoding of the path, only the segments within the intersection or in direct contact with the intersection are relevant. In this case, segments A, D and F are therefore not relevant. For complex intersections, e.g. Multi-lane intersections with structurally separated lanes, the course can be encoded by this intersection.

For the human driver it is obvious that the

Speed limit on continuation of the journey in straight-ahead direction along the route segments A, B, C and D sequence is to be afforded, while it loses its validity in a turning operation in the field path along the route segments E and F. If the driver bends, for example, into the field path, the latter can transmit the information via the communication interface to the navigation device that the route segments E and F have the

Point-based information 60 no longer applies to segment A segment.

It is also easy to imagine that the speed sign is replaced by a speed sign that sets a different speed, for example the 70 sign is replaced by a 50 sign without any change in the speed limit, and nothing changes at the rule, as it continues at the intersection 10.

FIG. 2 shows a sequence of individual steps of the invention

Procedure, and with 120 is displaying the road map in one

Communication interface designated, and 130 denotes the proposal of a possible branch, which is output from the navigation device to an operator. The position 140 indicates verifying the correct path by the operator to the navigation device by a

corresponding input, for example manually or by voice input. Position 150 indicates the storage of the correct path in

Data storage, which may be part of the navigation device. Finally, method step 160 describes the re-display with the correct segment attribution based on verification by the operator from the Method step 140 is based. In a repeated driving the

In the case of corresponding route segments, the operator can also be given the opportunity for future events to verify the segment attribution, for example if something has changed in the segment attribution.

FIG. 3 shows an example of a navigation device 100 having a

Communication interface 50 and with a data memory 40. In the running as a display display communication interface 50, an example of a road map 1 is shown, which corresponds to the road map 1 shown in Figure 1. In the communication interface 50, corresponding branches can be indicated after the intersection, which are indicated by the operator via the

Communication interface 50 can be selected to give this the correct path to the segment attribution. This input by the operator can then be stored in the data memory 40 of the navigation device 100.

The invention is not limited in its execution to the above-mentioned preferred embodiment. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use. All from the

Claims, the description or the drawings

Features and / or advantages, including design details, spatial arrangements and method steps, can be essential to the invention both in themselves and in the most diverse combinations.

Claims

claims

1. Method for converting point-based information into

segment-based information at intersections (10) with at least one first branch (20) and a second branch (30) in a road map (1) of a navigation device (100) or a backend for the attribution of route segments (A, B, C, D, E , F) the road map (1),

characterized,

a correct path along the first branch (20) or the second branch (30) is verified by an operator.

2. The method according to claim 1, characterized in that the correct path for the segment-based information in a data memory (40) of the navigation device (100) is stored and provided for further uses.

3. The method according to claim 1 or 2, characterized in that the communication with the operator by means of a

Communication interface (50), in particular operator display, is executed, wherein by means of the communication interface (50) by the

Navigation device (100) to the operator a proposal of a possible path for the correct attribution is issued and wherein the

Operator performs the verification by means of the communication interface (50).

4. The method according to claim 3, characterized in that the

Operator by means of the communication interface (50) a selection of possible paths is displayed such that the operator with a single operation can verify the correct path.

5. The method according to any one of the preceding claims, characterized

in that the segment-based information about the correct path is stored in a data memory (40) of the navigation device (100) or a backend independently of the card.

6. The method according to any one of the preceding claims, characterized

characterized in that one or more stored paths to the Backend can be exported in particular card-independent or imported from the backend.

7. The method according to claim 5 or 6, characterized in that the

Segment-based information about the correct path is stored in the data memory (40) along with location information based on GPS data.

8. The method according to any one of claims 3 to 7, characterized in that with the communication interface (50) of the operator

Crossing (10) with the at least one first branch (20) and the second branch (30) is displayed, wherein the verification by the operator by a manual tap of the correct branch (20, 30) is performed.

9. Navigation device for carrying out a method according to one of

Claims 1 to 8.

10. Navigation device (100) according to claim 8, characterized in that the navigation device (100) has a data memory (40) in which a manually entered information on a correct path for the segment-based information can be stored and / or that the

Navigation device (100) has a communication interface (50) by means of which a suggestion of a possible path for correct attribution can be output to the operator.