EP3014598A1 - Verfahren zum verarbeiten von messdaten eines fahrzeugs zur bestimmung des beginns einer parkplatzsuche - Google Patents
Verfahren zum verarbeiten von messdaten eines fahrzeugs zur bestimmung des beginns einer parkplatzsucheInfo
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- EP3014598A1 EP3014598A1 EP14731561.8A EP14731561A EP3014598A1 EP 3014598 A1 EP3014598 A1 EP 3014598A1 EP 14731561 A EP14731561 A EP 14731561A EP 3014598 A1 EP3014598 A1 EP 3014598A1
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/145—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas
- G08G1/147—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas where the parking area is within an open public zone, e.g. city centre
Definitions
- the invention relates to a method for processing measurement data of a vehicle for determining the beginning of a parking space search.
- Parking information on free parking spaces are used, for example, by parking guidance systems and / or navigation devices for navigating a parking space-seeking vehicle.
- Modern inner-city systems work according to a simple principle. If the number of parking spaces and the inflow and outflow of the vehicles are known, this can easily determine the availability of free parking. Appropriate signage of the access roads and dynamic updating of the parking place information enable vehicles to navigate to free parking spaces. In principle, this results in restrictions in that the parking areas must be clearly defined and the entry and exit of the vehicles must always be precisely controlled. For this purpose, structural measures, such as barriers or other access control systems are required.
- the Applicant also describes under the application number 10 2012 201 472.1 a method for providing parking information on free parking spaces, in which a knowledge database with historical data is generated from ascertained information about available, free parking spaces.
- the historical data includes statistical data on free parking spaces for given streets and / or given times or periods. From the historical data and current information, which are determined at a given time for one or more selected streets of vehicles in circulation, a probability distribution of expected free parking spaces for the selected street or streets is determined.
- the probability distribution represents parking information on free parking spaces in the selected street or streets.
- the accuracy of the probability distribution depends inter alia on the knowledge of a so-called parking rate ⁇ ⁇ .
- the parking rate will be according to the form!
- ⁇ ⁇ (t) (1-P n) ⁇ ( ⁇ ), where ⁇ ( ⁇ ) represents a request rate, which for a parking segment, ie, a region considered in which a parking operation is desired, the number of requests for a Parking space per time (ie time unit) indicates.
- P n indicates the probability of a free parking space.
- This object is achieved by a method according to the features of patent claim 1 and a computer program product according to the features of claim 16.
- Advantageous embodiments are specified in the dependent claims.
- the invention provides a method for processing measurement data of a vehicle for determining the beginning of a search for a parking space.
- the method described below may be onboard, i. in the vehicle looking for the parking space or offboard, i. be performed by a central computer to which the driving data are transmitted.
- the proposed method offers the possibility of making the calculations online, i. in real-time while driving, or offline, i. to carry out downstream after the trip.
- a number of travel data vectors are acquired, wherein each travel data vector comprises information about a speed, position data and the time of the detection of the speed and the position data.
- the detection of the number of travel data vectors takes place in a predetermined time interval (also referred to below as the sampling rate) in the seconds range, e.g. every second or every five or ten seconds.
- the trip data vectors thus follow a fixed chronological order.
- the position data may be represented by GPS (Global Positioning System) data.
- the position data can be determined by a GPS module of the vehicle.
- the speed can optionally be determined by the speed sensor of the vehicle or from the position data and detection times of two consecutive measurements.
- a next step the determination of a feature vector at each time of the detection of a trip data vector, wherein the information of the current and temporally past travel data vectors are processed, wherein the feature vector comprises as feature components at least one speed information and a path information.
- the course of the journey of the vehicle is taken into account.
- the values of the features are recalculated for each newly acquired trip data vector and combined in a feature vector. To each (Measurement or detection) time is thus a Merkmaisvektor calculated using current and previous trip data vectors are used.
- each of the feature vectors is assigned to one of two traffic categories.
- the first traffic category denotes the train traffic, wherein the driver does not search for a parking space
- the second traffic category designates the parking search traffic, wherein the driver searches for a parking space.
- a probability is calculated which indicates with which probability the feature vector is to be assigned to the first or the second traffic category.
- the generated feature vectors are considered individually and classified with respect to two traffic classes, namely a destination traffic represented by the first traffic category and a parking search traffic represented by the second traffic category.
- there is a probability for each feature vector which indicates with which probability a feature vector belongs to the parking search traffic and to the destination traffic.
- a segmentation takes place over the time profile of the determined traffic categories of the feature vectors, a subdivision of the journey from the start to the last detection of a travel data vector corresponding to the particular traffic categories of the feature vectors into two segments and the transition from one segment to the other segment the beginning of Parking search represents.
- the task of the segmentation is to determine, based on the analysis of the time profile of the classification of feature vectors, the travel data vector which marks the start of the search for a parking space.
- the result of the segmentation is a subdivision of the journey into two segments, according to the traffic categories, which forms the basis for calculating the desired information on the intensity and location of the parking search traffic.
- the beginning of a parking space search can be used to calculate the probability of an available parking space in the area more accurately.
- the method described in the introduction can be used in DE 10 20 2 201 472.1 of the Applicant.
- the knowledge of the beginning of a parking Planners can also be used by city planners to estimate parking situations in individual streets or neighborhoods.
- travel data vectors may be disregarded in determining the beginning of the parking space search if the information about the speed of the trip data vector is greater than a first threshold or less than a second threshold.
- the first threshold may e.g. between 50 km / h and 100 km / h and is in particular 80 km / h.
- the second threshold may e.g. between 2 km / h and 8 km / h and is in particular 4 km / h.
- the travel data vectors within a feature window representing a predetermined distance are processed, wherein the feature window propagates the travel data vectors from the current position or measurement to the first position or measurement on the traveled distance includes as the predetermined distance ago.
- the number of travel data vectors in a feature window can thus vary as a function of sampling rate and speed. For example, if the size of the feature window is 1 km, then with a higher average speed in the last kilometer, fewer trip data vectors will be included in the feature window than at a lower speed if a constant scan rate is assumed.
- the feature vector as feature corn components comprises, in addition to the velocity information and the path information, one or more of the following feature components:
- Circularity takes into account a typical pattern of behavior in the case of parking-seeking vehicles, the route of which often describes a circular choice of route guidance (for example, by foot traffic).
- the reference quantity here is the distance of the current position to a center of gravity of the previously detected waypoints, which result from the position data of the respective travel data vectors.
- PCA Principal Component Analysis
- This feature calculates the inefficiency of the route based on the destination of the trip. During the journey, the destination can not be determined on the basis of the trip data, therefore this feature can only be formed after the end of the journey, after all the trip data vectors are known.
- the destination position assumed is the position of the last trip data vector, which represents the location of the found parking space. This feature component can thus be used only in a method that is performed offline after the completed drive.
- the speed information may be an arithmetic mean and / or the median of the mean speeds of the travel data vectors taken into account for the determination of a respective feature vector.
- the route information may be a route inefficiency, which indicates how inefficient the traveled route is by the ratio of the actually traveled route with respect to the shortest route between the positions of two travel data vectors.
- the inefficiency of the route guidance is a feature that indicates how inefficient the driver-selected, driven route is with respect to the approach to the vehicle. This takes into account the characteristics of the classifiers (traffic classes), since vehicles belonging to the destination traffic try to reach the desired destination As fast as possible and efficient way closer, while parking-looking vehicles have already reached their destination and in the search for a parking lot orbiting.
- path inefficiency for a feature vector which is the maximum for the processed amount of travel data vectors is the maximum for the processed amount of travel data vectors.
- the feature vectors are normalized to classify each feature vector.
- Different feature components in short: Merkmaie
- feature components with numerically higher value range do not dominate over feature component with numerically smaller value range and in order to make the feature value comparable
- the features are normalized. This has the effect that both features with a large range of values and features with a small range of values reflect the same range of values.
- a z normalization known to the person skilled in the art can be used in which the mean value and the standard deviation are determined for each feature component and the feature components are transformed therewith.
- Principal component analysis is an unsupervised feature reduction technique. It pursues the goal of finding those principal axes in a feature space on which the feature vectors mapped on them reach a maximum variance.
- the calculation of the probability of the classifier can then be done with the set of Bayes, which is known to those skilled in the art, e.g. from [1] or [2] is known.
- the beginning of the parking space search is defined by a positive transition of the first traffic category to the second traffic category, wherein the travel data vector, which is assigned to the second traffic category, represents the beginning of the parking space search.
- a transfer of the second The first category of traffic is referred to as a negative transition.
- a positive transition occurs on a journey at most once.
- the reality shows that several positive transitions can occur during a journey.
- the beginning of the parking space search can then be determined with the following alternatives:
- the last positive transition of the first classifier to the second classifier is selected as the start of the parking search as long as the classification result of the subsequent travel data vectors constantly comprises the second classifier.
- the travel data vector marking the beginning of the parking space search is discarded so that from this point on there is no longer any detected search start.
- the temporally referenced positive transition of the first classifier to the second classifier is selected as the start of the parking space search, as long as the classification result of the subsequent trip data vectors for a given journey path constantly comprises the second traffic category.
- This segmentation alternative extends the first alternative with a distance criterion. In this case, a determined journey data vector is not immediately forgotten after a negative transition, but maintained for a certain distance after the negative transition. If a further positive transition is found within this route, it is ignored and the previously determined travel data vector is retained. If no positive transition is found, the previous trip data vector marking the beginning of the parking space search is forgotten at the end of the route after the negative transition.
- the beginning of the parking space search is determined on the basis of an integral of the course of the probability over the distance traveled.
- the hard decision as to whether a feature vector is parking search traffic or not is utilized to determine the start of search, but also the security with which the decision was made. If, if no search start exists, a positive transition is detected with a new trip data vector, the integral of the course of the so-called a posteriori probabilistic chain over the distance traveled is continuously calculated. If the result of the integral calculation is negative, the previously determined travel data vector is discarded.
- the invention further provides a computer program product which can be loaded directly into the internal memory of a digital computer or computer system, eg a computer of a vehicle or a central computer, and comprises software code sections with which the steps according to one of the preceding claims are executed Product on the computer or computer system is running.
- FIG. 1 shows a schematic representation of travel data vectors collected temporally successively
- FIG. 2 is a schematic representation of a flowchart of the method according to the invention.
- FIG. 3 shows a schematic illustration of display window windows applied to the detected trip data vectors
- Fig. 5 and 6 is an illustration for explaining a circularity
- FIGS. 7 and 8 are diagrams for explaining a PCA circularity
- Fig. 9 is an illustration for explaining an average change in direction
- FIG. 10 shows a schematic representation of a smoothing of the processed data taken in the context of the method
- FIG. 11 shows a table with a training matrix
- Figures 12, 13 and 14 show a histogram, the kiassen Together and resulting decision limits for determining a probability for the classification of the feature vectors.
- Figs. 15, 16, and 17 show various alternatives for performing a segmentation.
- the proposed method makes it possible to determine the parking search amount of a car trip in order to determine information about a car park search that has been made, e.g. the time that has effectively elapsed to find a parking space, or the distance traveled while searching for a parking space, or the location or area in which a parking space was searched.
- the method makes it possible in particular to determine the beginning of the search for a parking space for a car.
- the method may be performed by a computing unit in the vehicle (i.e., onboard) or by a central off-vehicle computing unit (i.e., offboard).
- the trip data vectors x e. determined by the vehicle at predetermined measuring times and processed sequentially in several steps. If the method is carried out offboard, the journey data vectors are preferably transmitted in real time via a communication interface to the central computer.
- a trip is represented by a payable set of N trip data vectors [, x 2 ; x N ], where
- a trip data vector x (Eq. 3.1) consists in each case of information on speed v, and GPS position p, at the time ti of the detection of the travel data vector.
- the trip data vectors follow a fixed time order since t, ⁇ tj + i.
- the GPS postions i can be detected by a navigation system installed in or incorporated in the vehicle.
- the speed is eg detected by a sensor of the vehicle and is typically available in the vehicle in a computing unit or on a data bus.
- a driver of the vehicle makes the decision to search for a parking space only once during a journey. Occasionally, a driver may begin to search in one area and, after a certain period of time, stop the search and continue in another area. In this case, the last decision to search for a parking space is taken as a true search start. In addition, it is assumed that each trip ends in a public parking lot at the roadside.
- T park T enC i e .
- a journey into two segments can be subdivided according to the type of driving type Cj (so-called traffic categories or traffic classes):
- the first segment since the start of the journey always represents the so-called "destination traffic" ZV, while the second segment represents the so-called Parking search "PSV corresponds.
- Ais target traffic ZV one TEII driving is referred to, in which the driver of a start point T star t the way to the region goes, where a parking lot is being sought. During the destination traffic ZV the driver does not look for a parking space.
- i park is the first index from which the trip data vector Xi belongs to the parking search traffic and thus represents the beginning of the parking search .
- the true time T pai1t and the corresponding location of the start of a journey can be determined by ty » * and Pi_p 3 rk can be approximated in Xu »*.
- search duration T park and search distance S pafk can be approximated as follows: Tpark - i j V tipark 3) where ⁇ (.,.) represents the distance between two GPS positions on the earth's surface in meters. Alternatively, a distance function may be used which calculates the shortest path between two points with respect to a correct navigation map.
- the location of the search for a parking space can either be indicated directly by the GPS positions of the search route, by map matching of the positions on roads, or indirectly by an indication of the so-called search center of gravity and average search radius of the search route.
- the basis for calculating these values is p3rk .
- non-relevant trip data vectors are sorted out in the course of an optional prefiltering (step S1).
- feature vectors are generated on the basis of known travel data vectors (step S2) and optionally smoothed (step S3).
- the classification step S4) calculates for each feature vector a probability for the class affiliation to the traffic class parking search traffic.
- the subsequent segmentation (step S5) analyzes the classification history and determines the final class labels by the determined search start of the journey.
- the determined results are optionally pi-sensitized (step S6).
- discarding means that the relevant trip data vector j is not sent to the next step for further processing noticeably malsextratation, is passed on. These include, for example, driving outside of city traffic and stance phases.
- a roadside parking lot is typically searched for in city traffic.
- the upper limit for the permitted speed is 80 km / h on inner-city roads. Since at a higher speed it is no longer possible to proceed from parking search traffic, a travel data vector x a with eg v,> 80 km / h is sorted out. This limit can also be set lower or higher.
- the recorded journey data vectors x s during stance phases contain, with the exception of the tally stamp, the same information. Since information about stance phases is not relevant for any of the subsequent steps, trip data vectors Xj with eg Vi ⁇ 4 km / h are sorted out. The choice of this welding value is due to the fact that in this way parking operations are not recorded, the speed is typically between 0-4 km / h.
- step S2 the feature extraction takes place.
- a low average speed, frequent turns and Blockumfahrten can be used.
- a single trip data vector with its information about the current speed and position is not sufficient, but its course must be taken into account.
- a feature corn vector is calculated with the following feature components: .Mittler (k ⁇ i mdigkdi
- the average speed and the path inefficiency are taken into account as feature components (also referred to below as features). By taking into account further feature components, the accuracy of the determination of the beginning of the parking space search can still be improved, the accuracy increasing only to a small extent.
- the current and previous trip data vector are used to calculate the various characteristics.
- the travel data vectors to be taken into account for calculating features are determined on the basis of a feature window MF, which is shown in greater detail in FIG.
- the size l f of the feature window MF is based on the distance traveled, since most of the constructed feature analyzes the course of the route. If the feature window was based on the past time, the length of the route section in a feature window F S would vary depending on the speed, and a minimum length of the route section would not be guaranteed. However, this is necessary in order to be able to compare the calculated characteristics in the course of the journey.
- the feature window MF- a includes the travel data vectors from the current position x, to the first position, which lies farther back than 1 f on the traveled distance.
- the number of travel data vectors in a feature window can thus vary as a function of sampling rate and speed. For example, if the size of the beacon window is 1 km, then at a higher average speed in the last kilometer, fewer trip data vectors are included in the feature window than at a lower one, assuming a constant sample rate.
- Feature vectors m can only be calculated from a distance covered by l f since the beginning of the journey in order to ensure the verglatsclerosis between the calculated Merkmaisvektoren m.
- Vi median ⁇ v t "v / 2 ,. ⁇ ., Vf M ⁇
- this value represents the mean velocity in driving phases.
- the inefficiency of the route guidance ⁇ is a feature which indicates how inefficient the driver-selected, driven route is with respect to the approach to the destination.
- the idea for this is derived from the characteristics of the traffic classes, since vehicles belonging to the destination traffic try to get closer to the desired destination in the quickest and most efficient way, whereas parking-seeking vehicles have already reached their destination and in the search for one Park the car park.
- s d is the shortest distance between pi and p, the airline being used in this description.
- s z represents the distance covered between ⁇ ⁇ , and p K. This corresponds to the length of the selected route from to P K. It is s z > s d .
- the relationship of the two routes to each other indicates whether the selected route represents a direct route to the end position (efficient) or a detour (inefficient).
- a value for the inefficiency of the Weg Installation can through
- the traveled distance s z is approximated by the sum of all partial distances between the individual waypoints.
- the index k indicates soft waypoint in the set [pi; ...; p "J should serve as a starting point for calculating the inefficiency.
- a value of ⁇ «- ⁇ 0 indicates an efficient route, while ⁇ ⁇ -> 1 means an inefficient route.
- the goal in the calculation of the feature is to determine the highest inefficiency between the current position p m and all remaining positions in the feature window:
- this feature is intended to provide the circularity ⁇ of the route within the feature area.
- the reference quantity here is the distance s m of the current position p M to the center of gravity of the waypoints p f . If s m ⁇ l f / 2, then we assume a straight line (Fig. 5). The smaller this distance becomes, the more circular the routing becomes (FIG. 6).
- the value for the circularity is calculated by:
- the distance between the center of gravity and the current position is normalized by the effective size of the feature window to obtain a value between 0 and 1.
- the normalized term is additionally subtracted from 1.
- the PCA is applied to the position information within a feature window. Subsequently, the quotient is formed from the resulting scales and ⁇ 2 :
- Fig. 9 shows directions ⁇ - ⁇ and at the corresponding positions p M and their difference.
- This feature calculates the inefficiency of the routing relative to the destination of the ride.
- the destination can not be determined on the basis of the journey data, therefore this feature can not be formed until after the end of the journey (ie offline), after all travel data vectors are known.
- the destination position assumed is the position p N of the last trip data vector, which represents the location of the found parking space.
- step S3 the feature vectors of a journey are smoothed.
- the purpose of smoothing is to combine feature vectors on a particular link to a smooth feature vector. In this way, not individual waypoints are processed, but sections.
- the generation of smoothed feature vectors is done by combining several feature vectors m, which are within a smoothing window GMF.
- the smoothing window GMF is advanced with respect to the traveled distance and may overlap. This is shown in FIG. 11.
- the length of a respective smoothing window GMF is determined by! gf determined. It is anchored to the first feature vector m g1 of a route section.
- the feature vector at the end of the route segment m gR is the last traffic vector vector that is less than Ig t away from m g1 with respect to the distance traveled.
- the number of feature vectors rrti within a smoothing window GMF can vary analogously to the number of travel data vectors Xj within a feature window MF.
- a new smoothing window MGF can be anchored within the current smoothing window MGF after exceeding a certain distance l gr . So that no more than two smoothing windows overlap simultaneously in order to limit the complexity of this step, the same applies
- Each smoothed feature vector generated by the feature vectors in a smoothing window MGF characterizes a link segment of length lgr> which starts at the position of the first enclosing feature vector and ends at the position of the first feature vector of the next smoothing window.
- the corresponding stretch of the last smoothed feature vector of a ride may be shorter or longer. In this way, it is ensured that all sections of a journey represented by smoothed feature vectors are disjoint, whereby the smoothing windows themselves do not necessarily have to be disjoint.
- the mean velocity corresponds to the median of the mean velocity of all feature vectors, while the maximum of all other features is determined.
- step S4 the generated feature vectors are considered individually and classified with respect to the traffic classes destination traffic Z and parking search traffic P.
- p P
- the feature vector vectors are first normalized, reduced, and then classified. For all these sub-steps, training data in the form of feature vectors is required in order to be able to learn the parameters for the individual sub-steps.
- This method uses supervised learning methods. Therefore, the class affiliation of the individual feature vectors, in Form of true labeis c, to be known. This is made possible by the use of test drives recorded for learning purposes, where the traffic class is known at all times.
- the training data are in the form of an N ⁇ K matrix T, each row representing a feature, and each column representing a feature vector is shown in FIG. Figure 11.
- 11 shows a training matrix T.
- the times of the matrix represent the different features, while the columns represent their occurrences in a feature vector.
- the training data in T can be divided into two matrices T z and T P.
- Normalized feature values are calculated using z-normalization known to those skilled in the art.
- each entry of the training matrix is transformed using the calculated parameters: (3.20)
- the background of the feature reduction is the reduction of the feature components in a feature vector with minimal information loss.
- the number of features in m is reduced from N to 1 .s D ⁇ N.
- a vector projection ⁇ N ⁇ D ⁇ D is performed.
- PCA Principal Component Analysis
- the basis for calculating the transformation matrix is the A / x N covariance matrix ⁇ of the training matrix T, consisting of the entries ⁇ %.
- the eigenvectors and eigenvalues of the covariance matrix are calculated, as described eg in [3].
- the eigenvectors w represent axes in the feature space, while the eigenvalues ⁇ , indicate the relative proportion of the total variance of the feature vectors projected on the resulting eigenvectors.) W ! Corresponds to the eigenvector with the largest eigenvalue A 1 ( while w N is the eigenvector with the smallest Eigenvalue A N. If the eigenvectors are known, an arbitrary 1 s D ⁇ N can now be selected, which determines the dimension of the transformed features. indicated.
- the D lines of the transformation matrix are then combined with the first D eigenvectors [wt; ...; w D ] filled.
- the classification assigns a probability to each (reduced) feature vector. Based on this probability, it is possible to make a statement about the class membership c of a Merkmaisvektor.
- c z denotes the membership of the class "destination traffic”
- c P represents the affiliation to "parking search traffic”.
- the known set of Bayes is applied, e.g. in [1] or [2].
- Feature vector indicates to belong to class c.
- p (c) is called the a-priori probability and represents the probability with which class c occurs.
- p (m) indicates the probability of the occurrence of a feature vector without distinguishing between classes. It can be calculated by summing up all class-specific probabilities multiplied by the
- ⁇ is calculated according to the mean value in the normalization step and ⁇ according to the covariance matrix of the PCA.
- the training data divided into classes in T z and T P serve as the data basis for the calculation of the parameters of the class-specific density functions. Consequently, ⁇
- ⁇ ⁇ ) ⁇ ( ⁇ , ⁇ ⁇ ) and ( ⁇
- ⁇ ) ( ⁇ /) , ⁇ ⁇ ).
- N indicates the number of feature vectors in T
- N 2 and N P the number of feature vector vectors in the class-specific training matrices T z and T P.
- Kiassifikator is a maximum a-postori Klassifikaior. This means that a feature vector is classified on the basis of the greatest a posteriori probability:
- FIG. 12 to 14 illustrate the construction of the decision boundary with the aid of the class-specific training data in the one-dimensional feature space. Those graphic elements constructed using the feature vectors in T 2 are designated 10, 12, 14, while the elements labeled 11, 13, 15 have been constructed from the feature vectors in T P. The decision limit is indicated in FIG. 14 by GR.
- the task of the segmentation is to determine, based on the analysis of the temporal course of the classification of feature vectors, that travel data vector which marks the start of the parking space search.
- the result of the segmentation is a subdivision of the journey into two segments, according to the traffic classes, which forms the basis for calculating the desired information on the intensity and location of the parking search traffic.
- the last trip data vector is accepted as the start of the parking space search. This ensures that a value> 0 for parking search distance and parking search duration can be calculated.
- FIGS. 15 to 17 determine at most one travel data vector x + with a positive transition of the classification result as the start of the parking space search.
- a driving data vector x_ represents a driving data vector with a negative transition of the classification result.
- the segmentation with distance criterion extends the simple segmentation method with a distance criterion.
- the segmentation with integral criterion shown in FIG. 17 also uses the a posteriori
- Equation 3.32 Since the a posteriori probability sequence does not follow an analytically calculable function, and moreover, there is no continuous value curve, the integral in Equation 3.32 must be given for a segment represented by the positions [p ⁇ p 2 ; p N j and the associated a posteriori probabilities [p ap i; p aP 2; 8 ⁇ ] can be numerically approximated:
- the segmentation step provides a result regarding the start of the search for a parking space.
- the result is not necessarily true, because it is based on the result of the classification.
- the classification is based on a probabilistic model, which was first used with the help of training data.
- step S6 the result of the segmentation is assessed and discarded if necessary.
- the criteria for withholding the segmentation result are eg an implausible long park search route. It seems implausible after the assumed journey that almost one entire journey serves the search for a parking space. Since it may be that the search for a parking space takes longer due to possible obstacles, this criterion is measured by the distance traveled in the destination traffic and in the parking search traffic. It is believed that the result implausibe! if the distance s p traveled to the destination since the start of the search for a parking space is greater than half of the distance traveled since the start of the journey until the start of search s z :
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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- Navigation (AREA)
Abstract
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DE102013212235.7A DE102013212235A1 (de) | 2013-06-26 | 2013-06-26 | Verfahren zum Verarbeiten von Messdaten eines Fahrzeugs zur Bestimmung des Beginns einer Parkplatzsuche |
PCT/EP2014/061633 WO2014206699A1 (de) | 2013-06-26 | 2014-06-04 | Verfahren zum verarbeiten von messdaten eines fahrzeugs zur bestimmung des beginns einer parkplatzsuche |
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US (1) | US10115309B2 (de) |
EP (1) | EP3014598B1 (de) |
JP (1) | JP6247754B2 (de) |
CN (1) | CN105359200B (de) |
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WO (1) | WO2014206699A1 (de) |
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DE102014217654A1 (de) * | 2014-09-04 | 2016-03-10 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Verarbeiten von Messdaten eines Fahrzeuges zur Bestimmungdes Beginns eines Parksuchverkehrs und Computerprogrammprodukt |
US9558664B1 (en) * | 2015-08-13 | 2017-01-31 | Here Global B.V. | Method and apparatus for providing parking availability detection based on vehicle trajectory information |
KR101806619B1 (ko) * | 2015-09-21 | 2017-12-07 | 현대자동차주식회사 | 차량의 주차 안내 장치 및 방법 |
DE102016000970A1 (de) * | 2016-01-29 | 2017-08-03 | Audi Ag | Verfahren zum Betreiben einer Detektionsvorrichtung eines Kraftfahrzeugs |
TWI581207B (zh) * | 2016-04-28 | 2017-05-01 | 國立清華大學 | 共乘路徑的計算方法及使用此方法的計算裝置與記錄媒體 |
WO2018060472A1 (en) * | 2016-09-29 | 2018-04-05 | Tomtom Traffic B.V. | Methods and systems for generating profile data for segments of an electronic map |
CN108108831B (zh) * | 2016-11-24 | 2020-12-04 | 中国移动通信有限公司研究院 | 一种目的地预测方法及装置 |
DE102017200196B3 (de) * | 2017-01-09 | 2018-04-05 | Ford Global Technologies, Llc | Steuern von Parkraum für Fahrzeuge |
CN107622301B (zh) * | 2017-08-16 | 2021-01-05 | 温州大学 | 一种停车场空余停车泊位数的预测方法 |
US10115307B1 (en) * | 2017-10-03 | 2018-10-30 | Sherece Upton | Parking space availability system |
GB201804395D0 (en) * | 2018-03-19 | 2018-05-02 | Tomtom Navigation Bv | Methods and systems for generating parking routes |
FR3084628B1 (fr) * | 2018-07-31 | 2021-06-11 | Renault Sas | Procede de determination d'un type d'emplacement de stationnement |
EP3611470B1 (de) * | 2018-08-14 | 2021-04-07 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und vorrichtungen zur ermittlung von routen zur streckenführung eines fahrzeugs |
CN110111600B (zh) * | 2019-05-08 | 2022-01-11 | 东华大学 | 一种基于VANETs的停车场推荐方法 |
CN112185157B (zh) * | 2019-07-04 | 2022-10-28 | 奥迪股份公司 | 路边停车位检测方法、系统、计算机设备及存储介质 |
CN112445215B (zh) * | 2019-08-29 | 2024-07-12 | 阿里巴巴集团控股有限公司 | 自动导引车行驶控制方法、装置及计算机系统 |
CN110659774B (zh) * | 2019-09-23 | 2022-08-02 | 北京交通大学 | 大数据方法驱动的停车需求预测方法 |
CN111009151B (zh) * | 2019-12-10 | 2021-01-22 | 珠海格力电器股份有限公司 | 一种停车位推荐方法、存储介质及终端设备 |
CN112101804B (zh) * | 2020-09-21 | 2021-11-02 | 北京嘀嘀无限科技发展有限公司 | 车辆调度方法、装置、可读存储介质和电子设备 |
CN112509362B (zh) * | 2020-11-12 | 2021-12-10 | 北京邮电大学 | 一种车位分配方法及装置 |
KR20220068710A (ko) * | 2020-11-19 | 2022-05-26 | 삼성전자주식회사 | 차량 측위 방법 및 장치 |
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CN102819965B (zh) * | 2012-08-27 | 2015-05-06 | 红门智能科技股份有限公司 | 停车场的车位引导及寻车系统 |
-
2013
- 2013-06-26 DE DE102013212235.7A patent/DE102013212235A1/de not_active Withdrawn
-
2014
- 2014-06-04 CN CN201480036148.9A patent/CN105359200B/zh active Active
- 2014-06-04 EP EP14731561.8A patent/EP3014598B1/de active Active
- 2014-06-04 WO PCT/EP2014/061633 patent/WO2014206699A1/de active Application Filing
- 2014-06-04 JP JP2016522366A patent/JP6247754B2/ja active Active
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2015
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See references of WO2014206699A1 * |
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EP3014598B1 (de) | 2017-03-08 |
CN105359200B (zh) | 2017-10-27 |
CN105359200A (zh) | 2016-02-24 |
JP2016522526A (ja) | 2016-07-28 |
WO2014206699A1 (de) | 2014-12-31 |
US10115309B2 (en) | 2018-10-30 |
US20160210860A1 (en) | 2016-07-21 |
JP6247754B2 (ja) | 2017-12-13 |
DE102013212235A1 (de) | 2014-12-31 |
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