EP1701323A1 - Method for detecting a parking place - Google Patents
Method for detecting a parking place Download PDFInfo
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- EP1701323A1 EP1701323A1 EP05290449A EP05290449A EP1701323A1 EP 1701323 A1 EP1701323 A1 EP 1701323A1 EP 05290449 A EP05290449 A EP 05290449A EP 05290449 A EP05290449 A EP 05290449A EP 1701323 A1 EP1701323 A1 EP 1701323A1
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- parking
- free
- free parking
- image
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- 238000000034 method Methods 0.000 title claims description 6
- 238000001514 detection method Methods 0.000 claims abstract description 45
- 238000010191 image analysis Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
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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
Definitions
- the invention relates to the field of methods of detecting free parking space in the parking areas so as to allow users to know in advance whether a parking area includes or not free parking spaces allowing them to park. their respective vehicles.
- the parking spaces are predetermined and the result of the image analysis of the parking area is binary, that is to say that for each predetermined parking space, the result is " free place "or" occupied place ".
- the result will be incorrect; either a partially occupied parking space will be marked as free, or a free parking space on two partially occupied predetermined squares will not be marked as a free parking space.
- the invention proposes an image processing which extracts the free parking spaces and their respective lengths, whatever their arrangement with respect to the marking of the predetermined parking spaces; thus, a place of free parking located on two parking spaces predetermined predetermined partially occupied will be identified and its length. Moreover, in the absence of ground marking, each continuous length of free parking space will be identified. Free parking spaces and their lengths are used in such a way as to indicate to a user a free parking space the length of which is adequate to allow him to park his vehicle.
- the length of free parking space is communicated directly to the user who decides directly, given the length of his vehicle, if the free parking space indicated by the server to the user by via the location of said free parking space, is adapted or not; in short, if it is sufficiently greater than the length of its vehicle to allow it to park properly.
- this comparison between the length of the vehicle, provided by the user directly or indirectly via representative information, and the length of the free parking space is performed by the server itself which communicates then simply to the user the location of the free parking space, adaptation thereof to the length of the vehicle of the user having been previously verified by the server; for this purpose, in an option, the user can claim a personalized value of the minimum difference between the length of the free parking space and the length of his vehicle, a value that the user can choose himself, from the server, depending on his personal talent for parking maneuvers.
- a free parking space detection method comprising: a step of sending, from a user to a server, a request for a free parking space specifying a place ; a step of taking one or more images, by at least one image picking apparatus located in the vicinity of the specified location, of a parking zone comprising several parking spaces and being associated with the apparatus; an image processing step determining the respective lengths of the free parking spaces in the parking area from one or more images of the parking area; a step of sending to the server an identifier of the image pickup apparatus, and said respective lengths of said free parking spaces; a step of sending, from the server to the user, at least one free parking space location and at least one length associated with said free parking space.
- a free parking space detection terminal used by the free parking space detection method according to the first main mode of the invention, as well as a free parking space detection device included in the free parking detection terminal according to the first main embodiment of the invention.
- the invention also relates to a free parking space detection terminal comprising: an image taking apparatus associated with a parking area comprising several parking spaces and able to take images of said parking area; a free parking space detection device comprising: an image processing module able to determine, from one or more images taken by the image taking apparatus, the respective lengths of the free parking spaces; in the parking area; an interface to a server, able to send an identifier of the image taking apparatus and said respective lengths of said free parking spaces.
- the invention also relates to a free parking space detection device comprising: an image processing module able to determine, from one or more images of a parking area comprising several parking spaces; parking, the respective lengths of free parking spaces in the parking area; an interface to a server, able to send an identifier of an image taking apparatus having provided the image or images of the parking area, and said respective lengths of said free parking spaces.
- a free parking space detection method comprising: a step of sending, from a user to a server, a request for a free parking space specifying a location and information representative of a vehicle length; a step of taking one or more images, by at least one image picking apparatus located in the vicinity of the specified location, of a parking zone comprising several parking spaces and being associated with the apparatus; an image processing step determining the respective lengths of the free parking spaces in the parking area from one or more images of the parking area; a step of sending to the server an identifier of the image pickup apparatus, and said respective lengths of said free parking spaces; a step of comparison, by the server, between on the one hand at least one of said respective lengths and on the other hand the information representative of a vehicle length, selecting at least one free parking space having a length adapted to said information representative of a vehicle length; a step of sending, from the server to the user, at least one selected free parking space location.
- a free parking space detection terminal used by the free parking space detection method according to the second main mode of the invention, as well as a free parking space detection device included in the free parking detection terminal according to the second main embodiment of the invention.
- the invention also relates to a free parking space detection terminal comprising: an image taking apparatus associated with a parking area comprising several parking spaces and able to take images of said parking area; a parking space detection device free device comprising: an image processing module adapted to determine, from one or more images taken by the image pickup apparatus, the respective lengths of the free parking spaces in the parking area; an interface to the server, able to send an identifier of the image pickup apparatus and said respective lengths of said free parking spaces.
- the invention also relates to a free parking space detection device comprising: an image processing module able to determine, from one or more images of a parking area comprising several parking spaces, the lengths respective free parking spaces in the parking area; an interface to the server, able to send an identifier of an image taking apparatus having provided the image or images of the parking area, and said respective lengths of said free parking spaces.
- the invention also relates to the server cooperating with the free parking space detection terminal according to the second main embodiment of the invention for implementing the free parking space detection method according to the second main embodiment of the invention.
- the invention also relates to a free parking space detection server comprising: a comparison module adapted to perform a comparison between one or more respective lengths of free parking spaces and secondly information representative of a vehicle length provided by a user, selecting at least one free parking space having a length adapted to said information representative of a vehicle length; an interface to a user, able to send at least one selected free parking space location.
- the parking area associated with a parking space detection terminal is a parking area comprising several parking spaces arranged along one or more lines so that the length of the places is parallel to the parking space. line in which the said places are situated, each line being continuous or discontinuous and being lined at least on one side by a traffic carriageway, the length of the parking spaces being parallel to the carriageway which borders the line in which the said places are located.
- the method of detecting free parking space according to the invention is particularly well suited to the detection of parking space in this type of parking area. In practice, a common example of this type of parking area is the parking spaces located on the side or sides of a street in an urban area.
- FIG. 1 schematically represents a parking space area at which, for example, the free parking space detection method according to the invention can be implemented.
- the lines 2 are discontinuous because of the presence of obstacles, such as an adjacent lane 5, a garage exit 6, or flower boxes 7.
- the free parking space detection terminals 8 are preferably located on the sidewalks 3, and may consist of by the lampposts to which are then added some additional features. Thus even at night, the illumination necessary for the image pickup apparatus of the detection terminal exists, it is then provided by the lighting of the street lamp.
- the image taking apparatus is either a video camera or a relatively frequent image camera.
- the image taking and the image processing are done in the detection terminal which only sends back to the server the result of the image processing and not the images themselves which would require too much bandwidth at the level of the resources telecommunication network connecting the detection terminals to the server. Sending images for centralized processing of images remains possible but would be much more expensive in terms of operation.
- FIG. 2 diagrammatically represents the progress of the steps of the method of detecting free parking space according to the invention.
- An imaging step 31 is performed by the image pickup apparatus of the detection terminal.
- the image-taking apparatus takes one or more images of the parking zone to which the image-taking apparatus is associated.
- a step 32 of image processing is performed by the detection device of the detection terminal.
- the image processing step 32 comprises successively: an image analysis function differentiating between, on the one hand, the image zones corresponding to a category of free parking spaces and, on the other hand, the zones image corresponding to a category of occupied parking spaces; a function for extracting the positions and extents of at least one category from the image areas; a calculation function for at least one category of the image areas, incorporating a perspective correction dependent on the position and extent of said image areas and the height with respect to the ground of the recording apparatus; image, and determining the respective lengths of the free parking spaces.
- the user-to-server sending step in which the user sends his free parking space request specifying a location, and in the context of the second main embodiment of the invention also information representative of a vehicle length, which may for example be either the actual length of the vehicle is more simply the model of the vehicle.
- a step 33 of sending to server is performed.
- the detection terminal sends to the server on the one hand an identifier of the image taking apparatus having taken the image or images of the parking area with which it is associated so as to allow the location of the parking area as well as that the respective lengths of the free parking spaces of the parking area so as to allow their use by the server.
- the server sends the user at least one location of free parking place corresponding to the place specified by the user in his request as well as the length of the free parking space.
- the server sends one or more locations of free parking space with several lengths of free parking space so as to allow the user to make his choice based on his vehicle. Otherwise, if the length or lengths of free parking space sent by the server are unsuitable for the vehicle of the user, it may ask the server to increase the length of the next free parking spaces proposed.
- the server performs a comparison step 34 between on the one hand one or more lengths of free parking space and on the other hand the representative information of the length of the user's vehicle, so as to send the user only free parking space locations whose length is sufficiently greater than the length of the user's vehicle to allow the user to park properly.
- the step 35 of sending server to user then includes only the sending of one or more locations of parking spaces located in the vicinity of the place specified by the user in his request, without sending length of place free parking.
- the image processing step may in particular be carried out in three different ways.
- the image processing step makes a comparison between, on the one hand, the images taken by the apparatus image taking over time and secondly one or more reference images corresponding to the parking area having all its free parking spaces.
- the reference images may for example be three in number, one at day, one at night, the third at an intermediate point between day and night.
- the image processing step performs a shape recognition of the vehicles occupying the occupied parking spaces so as to determine the free parking spaces.
- the image processing step realizes a movement recognition of the parking vehicles in the parking spaces so as to determine the free parking spaces.
- the images are destroyed after processing and not stored.
- no storage memory is needed at the detection terminal.
- this option should help remove the scruples.
- the shadows, on the free parking spaces, by the vehicles located on the occupied parking spaces are essentially shadows depending on the height of the vehicles since the image taking apparatus is located substantially in the axis of the line of parking spaces of the parking area.
- vehicle heights can be very variable which makes the processing step more complex.
- the shadows, on the free parking spaces, by the vehicles located on the occupied parking spaces are essentially shadows depending on the width of the vehicles since the image taking apparatus is located largely off the axis of the line of parking spaces in the parking area.
- the vehicle widths are much less variable than their heights, which makes the processing step easier and therefore the free parking space detection method more interesting.
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Abstract
L'invention concerne un procédé de détection de place de parking libre comprenant : une étape d'envoi, d'un utilisateur vers un serveur, d'une demande de place de parking libre spécifiant un endroit ; une étape de prise d'une ou de plusieurs images, par au moins un appareil de prise d'image situé au voisinage de l'endroit spécifié, d'une zone de parking comprenant plusieurs places de parking et étant associée à l'appareil ; une étape de traitement d'image déterminant les longueurs respectives des places de parking libres dans la zone de parking à partir d'une ou de plusieurs images de la zone de parking ; une étape d'envoi vers le serveur d'un identifiant de l'appareil de prise d'image, et desdites longueurs respectives desdites places de parking libres ; une étape d'envoi, du serveur vers l'utilisateur, d'au moins une localisation de place de parking libre.
Description
L'invention concerne le domaine des procédés de détection de place de parking libre dans les zones de parking de manière à permettre à des utilisateurs de savoir à l'avance si une zone de parking comprend ou non des places de parking libres leur permettant de garer leurs véhicules respectifs.The invention relates to the field of methods of detecting free parking space in the parking areas so as to allow users to know in advance whether a parking area includes or not free parking spaces allowing them to park. their respective vehicles.
Selon un art antérieur, décrit dans la demande de brevet internationale
Selon un autre art antérieur, décrit dans la demande de brevet anglaise
Selon un autre art antérieur, décrit dans la demande de brevet néerlandaise
Selon un autre art antérieur, décrit dans les demandes de brevet américaines
Dans tous ces arts antérieurs, les places de parking sont prédéterminées et le résultat de l'analyse de l'image de la zone de parking est binaire, c'est-à-dire que pour chaque place de parking prédéterminée, le résultat est « place libre » ou « place occupée ». En cas de stationnement incorrect d'un véhicule en situation de chevauchement sur deux places de parking, le résultat sera incorrect ; soit une place de parking partiellement occupée sera signalée comme étant libre, soit une place de parking libre à cheval sur deux places prédéterminées partiellement occupées ne sera pas signalée comme place de parking libre.In all these prior arts, the parking spaces are predetermined and the result of the image analysis of the parking area is binary, that is to say that for each predetermined parking space, the result is " free place "or" occupied place ". In case of incorrect parking of a vehicle overlapping two parking spaces, the result will be incorrect; either a partially occupied parking space will be marked as free, or a free parking space on two partially occupied predetermined squares will not be marked as a free parking space.
L'invention propose un traitement d'image qui extrait les places de parking libres et leurs longueurs respectives, quelque soit leur disposition par rapport au marquage des places de parking prédéterminées ; ainsi, une place de parking libre située à cheval sur deux places de parking prédéterminées partiellement occupées sera indentifiée ainsi que sa longueur. Par ailleurs, en cas d'absence de marquage au sol, chaque longueur continue de place de parking libre sera identifiée. Les places de parking libres ainsi que leurs longueurs sont utilisées de manière à indiquer à un utilisateur une place de parking libre dont la longueur est adéquate pour lui permettre de garer son véhicule. La connaissance précise de la valeur de la longueur de la place de parking libre disponible permettra à la fois à l'utilisateur de se garer sans difficulté et sans perte de temps en n'essayant de se garer que dans des places de parking adaptées à la longueur de son véhicule et au serveur de gérer plus efficacement l'ensemble des places de parking disponibles dans l'ensemble des zones de parking en permettant l'utilisation optimisée de toutes les places de parking utilisables.The invention proposes an image processing which extracts the free parking spaces and their respective lengths, whatever their arrangement with respect to the marking of the predetermined parking spaces; thus, a place of free parking located on two parking spaces predetermined predetermined partially occupied will be identified and its length. Moreover, in the absence of ground marking, each continuous length of free parking space will be identified. Free parking spaces and their lengths are used in such a way as to indicate to a user a free parking space the length of which is adequate to allow him to park his vehicle. The precise knowledge of the value of the length of the free parking space available will allow both the user to park without difficulty and without loss of time by trying to park only in parking spaces adapted to the length of his vehicle and the server to more efficiently manage all available parking spaces in all parking areas by allowing the optimized use of all usable parking spaces.
Deux modes de réalisation principaux sont envisagés. Dans le premier mode, la longueur de place de parking libre est communiquée directement à l'utilisateur qui décide directement, compte tenu de la longueur de son véhicule, si la place de parking libre indiquée, par le serveur, à l'utilisateur, par l'intermédiaire de la localisation de ladite place de parking libre, est adaptée ou non ; en clair, si elle est suffisamment supérieure à la longueur de son véhicule pour lui permettre de se garer correctement. Dans le deuxième mode, cette comparaison entre la longueur du véhicule, fournie par l'utilisateur directement ou indirectement par l'intermédiaire d'une information représentative, et la longueur de la place de parking libre est réalisée par le serveur lui-même qui communique alors simplement à l'utilisateur la localisation de la place de parking libre, l'adaptation de celle-ci à la longueur du véhicule de l'utilisateur ayant été préalablement vérifiée par le serveur ; à cet effet, dans une option, l'utilisateur peut réclamer une valeur personnalisée de l'écart minimum entre la longueur de la place de parking libre et la longueur de son véhicule, valeur que l'utilisateur pourra choisir lui-même, auprès du serveur, en fonction de son talent personnel pour les manoeuvres de stationnement.Two main embodiments are envisaged. In the first mode, the length of free parking space is communicated directly to the user who decides directly, given the length of his vehicle, if the free parking space indicated by the server to the user by via the location of said free parking space, is adapted or not; in short, if it is sufficiently greater than the length of its vehicle to allow it to park properly. In the second mode, this comparison between the length of the vehicle, provided by the user directly or indirectly via representative information, and the length of the free parking space is performed by the server itself which communicates then simply to the user the location of the free parking space, adaptation thereof to the length of the vehicle of the user having been previously verified by the server; for this purpose, in an option, the user can claim a personalized value of the minimum difference between the length of the free parking space and the length of his vehicle, a value that the user can choose himself, from the server, depending on his personal talent for parking maneuvers.
Selon le premier mode de réalisation principal de l'invention, il est prévu un procédé de détection de place de parking libre comprenant : une étape d'envoi, d'un utilisateur vers un serveur, d'une demande de place de parking libre spécifiant un endroit ; une étape de prise d'une ou de plusieurs images, par au moins un appareil de prise d'image situé au voisinage de l'endroit spécifié, d'une zone de parking comprenant plusieurs places de parking et étant associée à l'appareil ; une étape de traitement d'image déterminant les longueurs respectives des places de parking libres dans la zone de parking à partir d'une ou de plusieurs images de la zone de parking ; une étape d'envoi vers le serveur d'un identifiant de l'appareil de prise d'image, et desdites longueurs respectives desdites places de parking libres ; une étape d'envoi, du serveur vers l'utilisateur, d'au moins une localisation de place de parking libre et d'au moins une longueur associée à ladite place de parking libre.According to the first main embodiment of the invention, there is provided a free parking space detection method comprising: a step of sending, from a user to a server, a request for a free parking space specifying a place ; a step of taking one or more images, by at least one image picking apparatus located in the vicinity of the specified location, of a parking zone comprising several parking spaces and being associated with the apparatus; an image processing step determining the respective lengths of the free parking spaces in the parking area from one or more images of the parking area; a step of sending to the server an identifier of the image pickup apparatus, and said respective lengths of said free parking spaces; a step of sending, from the server to the user, at least one free parking space location and at least one length associated with said free parking space.
Selon le premier mode de réalisation principal de l'invention, il est aussi prévu une borne de détection de place de parking libre utilisée par le procédé de détection de place de parking libre selon le premier mode principal de l'invention, ainsi qu'un dispositif de détection de place de parking libre inclus dans la borne de détection de parking libre selon le premier mode de réalisation principal de l'invention. L'invention concerne aussi une borne de détection de place de parking libre comprenant : un appareil de prise d'image associé à une zone de parking comprenant plusieurs places de parking et apte à prendre des images de ladite zone de parking ; un dispositif de détection de place de parking libre comprenant : un module de traitement d'image apte à déterminer, à partir d'une ou de plusieurs images prises par l'appareil de prise d'image, les longueurs respectives des places de parking libres dans la zone de parking ; une interface vers un serveur, apte à envoyer un identifiant de l'appareil de prise d'image et lesdites longueurs respectives desdites places de parking libres. L'invention concerne également un dispositif de détection de place de parking libre comprenant : un module de traitement d'image apte à déterminer, à partir d'une ou de plusieurs images d'une zone de parking comprenant plusieurs places de parking, les longueurs respectives des places de parking libres dans la zone de parking ; une interface vers un serveur, apte à envoyer un identifiant d'un appareil de prise d'image ayant fourni la ou les images de la zone de parking, et lesdites longueurs respectives desdites places de parking libres.According to the first main embodiment of the invention, there is also provided a free parking space detection terminal used by the free parking space detection method according to the first main mode of the invention, as well as a free parking space detection device included in the free parking detection terminal according to the first main embodiment of the invention. The invention also relates to a free parking space detection terminal comprising: an image taking apparatus associated with a parking area comprising several parking spaces and able to take images of said parking area; a free parking space detection device comprising: an image processing module able to determine, from one or more images taken by the image taking apparatus, the respective lengths of the free parking spaces; in the parking area; an interface to a server, able to send an identifier of the image taking apparatus and said respective lengths of said free parking spaces. The invention also relates to a free parking space detection device comprising: an image processing module able to determine, from one or more images of a parking area comprising several parking spaces; parking, the respective lengths of free parking spaces in the parking area; an interface to a server, able to send an identifier of an image taking apparatus having provided the image or images of the parking area, and said respective lengths of said free parking spaces.
Selon le deuxième mode de réalisation principal de l'invention, il est prévu un procédé de détection de place de parking libre comprenant : une étape d'envoi, d'un utilisateur vers un serveur, d'une demande de place de parking libre spécifiant un endroit et une information représentative d'une longueur de véhicule ; une étape de prise d'une ou de plusieurs images, par au moins un appareil de prise d'image situé au voisinage de l'endroit spécifié, d'une zone de parking comprenant plusieurs places de parking et étant associée à l'appareil ; une étape de traitement d'image déterminant les longueurs respectives des places de parking libres dans la zone de parking à partir d'une ou de plusieurs images de la zone de parking ; une étape d'envoi vers le serveur d'un identifiant de l'appareil de prise d'image, et desdites longueurs respectives desdites places de parking libres ; une étape de comparaison, par le serveur, entre d'une part au moins une desdites longueurs respectives et d'autre part l'information représentative d'une longueur de véhicule, sélectionnant au moins une place de parking libre ayant une longueur adaptée à ladite information représentative d'une longueur de véhicule ; une étape d'envoi, du serveur vers l'utilisateur, d'au moins une localisation de place de parking libre sélectionnée.According to the second main embodiment of the invention, there is provided a free parking space detection method comprising: a step of sending, from a user to a server, a request for a free parking space specifying a location and information representative of a vehicle length; a step of taking one or more images, by at least one image picking apparatus located in the vicinity of the specified location, of a parking zone comprising several parking spaces and being associated with the apparatus; an image processing step determining the respective lengths of the free parking spaces in the parking area from one or more images of the parking area; a step of sending to the server an identifier of the image pickup apparatus, and said respective lengths of said free parking spaces; a step of comparison, by the server, between on the one hand at least one of said respective lengths and on the other hand the information representative of a vehicle length, selecting at least one free parking space having a length adapted to said information representative of a vehicle length; a step of sending, from the server to the user, at least one selected free parking space location.
Selon le deuxième mode de réalisation principal de l'invention, il est aussi prévu une borne de détection de place de parking libre utilisée par le procédé de détection de place de parking libre selon le deuxième mode principal de l'invention, ainsi qu'un dispositif de détection de place de parking libre inclus dans la borne de détection de parking libre selon le deuxième mode de réalisation principal de l'invention. L'invention concerne aussi une borne de détection de place de parking libre comprenant : un appareil de prise d'image associé à une zone de parking comprenant plusieurs places de parking et apte à prendre des images de ladite zone de parking ; un dispositif de détection de place de parking libre comprenant : un module de traitement d'image apte à déterminer, à partir d'une ou de plusieurs images prises par l'appareil de prise d'image, les longueurs respectives des places de parking libres dans la zone de parking ; une interface vers le serveur, apte à envoyer un identifiant de l'appareil de prise d'image et lesdites longueurs respectives desdites places de parking libres. L'invention concerne également un dispositif de détection de place de parking libre comprenant : un module de traitement d'image apte à déterminer, à partir d'une ou de plusieurs images d'une zone de parking comprenant plusieurs places de parking, les longueurs respectives des places de parking libres dans la zone de parking ; une interface vers le serveur, apte à envoyer un identifiant d'un appareil de prise d'image ayant fourni la ou les images de la zone de parking, et lesdites longueurs respectives desdites places de parking libres.According to the second main embodiment of the invention, there is also provided a free parking space detection terminal used by the free parking space detection method according to the second main mode of the invention, as well as a free parking space detection device included in the free parking detection terminal according to the second main embodiment of the invention. The invention also relates to a free parking space detection terminal comprising: an image taking apparatus associated with a parking area comprising several parking spaces and able to take images of said parking area; a parking space detection device free device comprising: an image processing module adapted to determine, from one or more images taken by the image pickup apparatus, the respective lengths of the free parking spaces in the parking area; an interface to the server, able to send an identifier of the image pickup apparatus and said respective lengths of said free parking spaces. The invention also relates to a free parking space detection device comprising: an image processing module able to determine, from one or more images of a parking area comprising several parking spaces, the lengths respective free parking spaces in the parking area; an interface to the server, able to send an identifier of an image taking apparatus having provided the image or images of the parking area, and said respective lengths of said free parking spaces.
Par ailleurs, dans le deuxième mode de réalisation principal de l'invention, l'invention concerne encore le serveur coopérant avec la borne de détection de place de parking libre selon le deuxième mode de réalisation principal de l'invention pour la mise en oeuvre du procédé de détection de place de parking libre selon le deuxième mode de réalisation principal de l'invention. L'invention concerne encore un serveur de détection de place de parking libre comprenant : un module de comparaison apte à réaliser une comparaison entre une ou plusieurs longueurs respectives de places de parking libre et d'autre part une information représentative d'une longueur de véhicule fournie par un utilisateur, sélectionnant au moins une place de parking libre ayant une longueur adaptée à ladite information représentative d'une longueur de véhicule ; une interface vers un utilisateur, apte à envoyer au moins une localisation de place de parking libre sélectionnée.Furthermore, in the second main embodiment of the invention, the invention also relates to the server cooperating with the free parking space detection terminal according to the second main embodiment of the invention for implementing the free parking space detection method according to the second main embodiment of the invention. The invention also relates to a free parking space detection server comprising: a comparison module adapted to perform a comparison between one or more respective lengths of free parking spaces and secondly information representative of a vehicle length provided by a user, selecting at least one free parking space having a length adapted to said information representative of a vehicle length; an interface to a user, able to send at least one selected free parking space location.
L'invention sera mieux comprise et d'autres particularités et avantages apparaîtront à l'aide de la description ci-après et des dessins joints, donnés à titre d'exemples, où :
- la figure 1 représente schématiquement une zone de parking au niveau de laquelle peut par exemple être mis en oeuvre le procédé de détection de place de parking libre selon l'invention ;
- la figure 2 représente schématiquement le déroulement des étapes du procédé de détection de place de parking libre selon l'invention.
- FIG. 1 schematically represents a parking area at which, for example, the free parking space detection method according to the invention can be implemented;
- FIG. 2 diagrammatically represents the progress of the steps of the free parking space detection method according to the invention.
De préférence, la zone de parking associée à une borne de détection de place de parking selon l'invention est une zone de parking comprenant plusieurs places de parking disposées selon une ou plusieurs lignes de façon à ce que la longueur des places soit parallèle à la ligne dans laquelle lesdites places sont situées, chaque ligne étant continue ou discontinue et étant bordée au moins d'un côté par une chaussée de circulation, la longueur des places de parking étant parallèle à la chaussée de circulation qui borde la ligne dans laquelle lesdites places sont situées. Le procédé de détection de place de parking libre selon l'invention est particulièrement bien adapté à la détection de place de parking dans ce type de zone de parking. En pratique, un exemple courant de ce type de zone de parking est constitué par les places de parking situées sur le ou les côtés d'une rue en zone urbaine.Preferably, the parking area associated with a parking space detection terminal according to the invention is a parking area comprising several parking spaces arranged along one or more lines so that the length of the places is parallel to the parking space. line in which the said places are situated, each line being continuous or discontinuous and being lined at least on one side by a traffic carriageway, the length of the parking spaces being parallel to the carriageway which borders the line in which the said places are located. The method of detecting free parking space according to the invention is particularly well suited to the detection of parking space in this type of parking area. In practice, a common example of this type of parking area is the parking spaces located on the side or sides of a street in an urban area.
La figure 1 représente schématiquement une zone de place de parking au niveau de laquelle peut par exemple être mis en oeuvre le procédé de détection de place de parking libre selon l'invention. De chaque côté d'une chaussée de circulation 1, sont situées deux lignes 2 discontinues de places de parking 20, elles-mêmes bordées par des trottoirs 3, eux-mêmes bordés par des habitations 4. Les lignes 2 sont discontinues en raison de la présence d'obstacles, comme par exemple une ruelle adjacente 5, une sortie de garage 6, ou encore des bacs à fleurs 7. Les bornes 8 de détection de place de parking libre sont de préférence situées sur les trottoirs 3, et peuvent être constitués par les réverbères auxquels sont alors ajoutés quelques fonctionnalités supplémentaires. Ainsi même la nuit, l'éclairage nécessaire à l'appareil de prise d'image de la borne de détection existe, il est alors fourni par l'éclairage du réverbère.FIG. 1 schematically represents a parking space area at which, for example, the free parking space detection method according to the invention can be implemented. On each side of a traffic lane 1, are located two
De préférence, l'appareil de prise d'image est soit une caméra vidéo, soit un appareil photo à prise d'image relativement fréquente. La prise d'image et le traitement d'image se font dans la borne de détection qui ne renvoie au serveur que le résultat du traitement des images et non pas les images elles-mêmes ce qui demanderait une bande passante trop importante au niveau des ressources du réseau de télécommunication reliant les bornes de détection au serveur. Un envoi des images pour un traitement centralisé des images reste envisageable mais serait beaucoup plus coûteux au niveau du fonctionnement.Preferably, the image taking apparatus is either a video camera or a relatively frequent image camera. The image taking and the image processing are done in the detection terminal which only sends back to the server the result of the image processing and not the images themselves which would require too much bandwidth at the level of the resources telecommunication network connecting the detection terminals to the server. Sending images for centralized processing of images remains possible but would be much more expensive in terms of operation.
La figure 2 représente schématiquement le déroulement des étapes du procédé de détection de place de parking libre selon l'invention. Une étape 31 de prise d'image est réalisée par l'appareil de prise d'image de la borne de détection. Au cours de cette étape 31 de prise d'image, l'appareil de prise d'image prend une ou plusieurs images de la zone de parking à laquelle l'appareil de prise d'image est associé. Puis une étape 32 de traitement d'image est réalisée par le dispositif de détection de la borne de détection. Par exemple, l'étape 32 de traitement d'image comprend successivement : une fonction d'analyse d'image différenciant entre d'une part les zones d'image correspondant à une catégorie de places de parking libres et d'autre part les zones d'image correspondant à une catégorie de places de parking occupées ; une fonction d'extraction des positions et des étendues d'au moins une catégorie des zones d'image ; une fonction de calcul pour au moins une catégorie des zones d'image, intégrant une correction de perspective dépendant de la position et de l'étendue desdites zones d'image et de la hauteur par rapport au sol de l'appareil de prise d'image, et déterminant les longueurs respectives des places de parking libres. Dans un intervalle de temps qui commence avant l'étape 31 de prise d'image et qui se termine avant l'étape 33 d'envoi vers le serveur, se déroule l'étape 20 d'envoi utilisateur vers serveur au cours de laquelle l'utilisateur envoie sa demande de place de parking libre en spécifiant un endroit, et dans le cadre du second mode de réalisation principal de l'invention également une information représentative d'une longueur de véhicule, laquelle pourra par exemple être soit la longueur proprement dite du véhicule soit plus simplement le modèle du véhicule. Ensuite, une étape 33 d'envoi vers serveur est réalisée. La borne de détection envoie au serveur d'une part un identifiant de l'appareil de prise d'image ayant pris la ou les images de la zone de parking à laquelle il est associé de manière à permettre la localisation de la zone de parking ainsi que les longueurs respectives des places de parking libres de la zone de parking de manière à permettre leur utilisation par le serveur. Dans le premier mode de réalisation principal de l'invention, au cours de l'étape 35 d'envoi serveur vers utilisateur qui succède à l'étape 33 d'envoi vers serveur, le serveur envoie à l'utilisateur au moins une localisation de place de parking libre correspondant à l'endroit spécifié par l'utilisateur dans sa demande ainsi que la longueur de la place de parking libre. De préférence, le serveur envoie une ou plusieurs localisations de place de parking libre avec plusieurs longueurs de place de parking libre de manière à permettre à l'utilisateur de faire son choix en fonction de son véhicule. Sinon, si la ou les longueurs de place de parking libre envoyées par le serveur sont inadaptées au véhicule de l'utilisateur, celui-ci peut demander au serveur d'augmenter la longueur des prochaines places de parking libres proposées. Dans le deuxième mode de réalisation principal de l'invention, entre les étapes 33 et 35, le serveur réalise une étape 34 de comparaison entre d'une part une ou plusieurs longueurs de place de parking libre et d'autre part l'information représentative de la longueur du véhicule de l'utilisateur, de manière à n'envoyer à l'utilisateur que des localisations de place de parking libre dont la longueur est suffisamment supérieure à la longueur du véhicule de l'utilisateur pour permettre à l'utilisateur de se garer correctement. L'étape 35 d'envoi serveur vers utilisateur ne comprend alors que l'envoi d'une ou plusieurs localisations de places de parking situées dans le voisinage de l'endroit spécifié par l'utilisateur dans sa demande, sans envoyer de longueur de place de parking libre.FIG. 2 diagrammatically represents the progress of the steps of the method of detecting free parking space according to the invention. An
L'étape de traitement d'image peut être notamment réalisée de trois manières différentes. Dans une première réalisation, l'étape de traitement d'image réalise une comparaison entre d'une part les images prises par l'appareil de prise d'image au cours du temps et d'autre part une ou plusieurs images de référence correspondant à la zone de parking ayant toutes ses places de parking libres. Les images de référence peuvent par exemple être au nombre de trois, l'une le jour, l'autre la nuit, la troisième à un moment intermédiaire entre le jour et la nuit. Dans une deuxième réalisation, l'étape de traitement d'image réalise une reconnaissance de forme des véhicules occupant les places de parking occupées de manière à déterminer les places de parking libres. Dans une troisième réalisation, l'étape de traitement d'image réalise une reconnaissance de mouvement des véhicules se garant dans les places de parking de manière à déterminer les places de parking libres.The image processing step may in particular be carried out in three different ways. In a first embodiment, the image processing step makes a comparison between, on the one hand, the images taken by the apparatus image taking over time and secondly one or more reference images corresponding to the parking area having all its free parking spaces. The reference images may for example be three in number, one at day, one at night, the third at an intermediate point between day and night. In a second embodiment, the image processing step performs a shape recognition of the vehicles occupying the occupied parking spaces so as to determine the free parking spaces. In a third embodiment, the image processing step realizes a movement recognition of the parking vehicles in the parking spaces so as to determine the free parking spaces.
De préférence, les images sont détruites après traitement et non pas stockées. Ainsi, aucune mémoire de stockage n'est nécessaire au niveau de la borne de détection. De plus, dans les pays où il existe une méfiance envers tout ce qui concerne la surveillance volontaire ou accidentelle de la vie privée, cette option devrait aider à lever les scrupules.Preferably, the images are destroyed after processing and not stored. Thus, no storage memory is needed at the detection terminal. In addition, in countries where there is distrust of anything related to voluntary or accidental surveillance of privacy, this option should help remove the scruples.
Lorsque l'appareil de prise d'image est situé du même côté d'une rue que la zone de parking à laquelle il est associé, les ombres portées, sur les places de parking libres, par les véhicules situés sur les places de parking occupées sont essentiellement des ombres dépendant de la hauteur des véhicules puisque l'appareil de prise d'image est situé pratiquement dans l'axe de la ligne des places de parking de la zone de parking. Or les hauteurs de véhicule peuvent être très variables ce qui rend l'étape de traitement plus complexe. Tandis que dans le cas préférentiel où d'une part l'appareil de prise d'image et d'autre part la zone de parking associée à l'appareil de prise d'image sont situés de part et d'autre d'une rue, les ombres portées, sur les places de parking libres, par les véhicules situés sur les places de parking occupées sont essentiellement des ombres dépendant de la largeur des véhicules puisque l'appareil de prise d'image est situé largement hors de l'axe de la ligne des places de parking de la zone de parking. Or, les largeurs de véhicule sont nettement moins variables que leurs hauteurs, ce qui rend l'étape de traitement plus simple et par conséquent le procédé de détection de place de parking libre plus intéressant.When the imaging device is located on the same side of a street as the parking area with which it is associated, the shadows, on the free parking spaces, by the vehicles located on the occupied parking spaces are essentially shadows depending on the height of the vehicles since the image taking apparatus is located substantially in the axis of the line of parking spaces of the parking area. But vehicle heights can be very variable which makes the processing step more complex. While in the preferential case where on the one hand the image pickup device and on the other hand the parking area associated with the image taking apparatus are located on either side of a street , the shadows, on the free parking spaces, by the vehicles located on the occupied parking spaces are essentially shadows depending on the width of the vehicles since the image taking apparatus is located largely off the axis of the line of parking spaces in the parking area. However, the vehicle widths are much less variable than their heights, which makes the processing step easier and therefore the free parking space detection method more interesting.
Claims (12)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
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| EP05290449A EP1701323A1 (en) | 2005-02-28 | 2005-02-28 | Method for detecting a parking place |
| US11/362,916 US20060220911A1 (en) | 2005-02-28 | 2006-02-28 | Parking space detection method |
| CNA2006100550454A CN1828689A (en) | 2005-02-28 | 2006-02-28 | Parking Space Detection Method |
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|---|---|---|---|
| EP05290449A EP1701323A1 (en) | 2005-02-28 | 2005-02-28 | Method for detecting a parking place |
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| EP1701323A1 true EP1701323A1 (en) | 2006-09-13 |
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| EP05290449A Withdrawn EP1701323A1 (en) | 2005-02-28 | 2005-02-28 | Method for detecting a parking place |
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| US (1) | US20060220911A1 (en) |
| EP (1) | EP1701323A1 (en) |
| CN (1) | CN1828689A (en) |
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| EP2138653A3 (en) * | 2008-06-23 | 2012-11-28 | PMS GmbH | Parking area management |
| FR2942341A1 (en) * | 2009-02-16 | 2010-08-20 | Ruben Taieb | Parking assisting device for searching paying free space from car, has analysis units analyzing image of automobile zone to determine free spaces for parking using global positioning system, and display units displaying determination result |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1828689A (en) | 2006-09-06 |
| US20060220911A1 (en) | 2006-10-05 |
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