Parking management device, parking management system, parking management method, and program

Abstract

To provide a parking management device, a parking management system, a parking management method, and a program that can grasp the parking status of each parking space.SOLUTION: A parking management device, which is installed in a parking space of a parking lot, includes: a receiving unit that receives the information obtained when a marker shielded by a vehicle during parking is captured by a photographing unit including the parking space in its capturing range; and a determination unit that determines a parking status of the parking space based on whether an image of the marker included in the captured information meets predetermined conditions.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a parking management device, a parking management system, a parking management method, and a program. [Background technology]

[0002] Patent document 1 discloses a vehicle that, when there are two rows of parking spaces in the width direction from the side of the vehicle body, can use a camera mounted on the vehicle to detect whether it is possible to park in the parking space one row further back. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-17021 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, parking lot vacancy management is also performed using camera-based entry / exit management. Entry / exit management involves adding the number of vehicles entering the parking lot and subtracting the number of vehicles leaving the parking lot, so if false positives occur when vehicles enter or leave the parking lot, it becomes difficult to accurately grasp the number of vacant spaces in the parking lot. Furthermore, entry / exit management cannot detect illegal parking, where a standard-sized vehicle is parked in a parking space for a large vehicle. To address these issues, it was necessary to understand the parking situation for each parking space.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a parking management device, a parking management system, a parking management method, and a program that can grasp the parking situation for each parking space. [Means for solving the problem]

[0006] In order to solve the above problem, a parking management device according to the present disclosure includes: a receiving unit that receives photographic information obtained by capturing an image of a marker that is installed in a parking space of a parking lot and is blocked by a vehicle when parking, using an imaging unit that includes the parking space in its imaging range; and a determining unit that determines the parking status of the parking space based on whether an image of the marker included in the photographic information satisfies a predetermined condition. The shape of the marker is a bar shape extending in one direction, and the determination unit determines the parking situation of the parking space based on whether a marker discrimination ratio, which is the ratio of the length of the portion of the marker photographed by the photographing unit to the length of the marker when the parking space is vacant, is equal to or less than a predetermined threshold. .

[0007] In order to solve the above problem, the parking management system according to the present disclosure includes the parking management device, the marker, and the photographing unit.

[0008] In order to solve the above problem, the parking management method according to the present disclosure includes: Parking management device receiving photographic information acquired by photographing a marker provided in a parking space of a parking lot and blocked by a vehicle when parking, using a photographing unit whose photographing range includes the parking space; The parking management device and determining the parking situation of the parking space based on whether the image of the marker included in the photographing information satisfies a predetermined condition. The marker has a rod shape extending in one direction, and in the step of determining the parking status of the parking space, the parking management device determines the parking status of the parking space based on whether a marker discrimination ratio, which is the ratio of the length of the marker when the parking space is vacant to the length of the portion of the marker photographed by the photographing unit, is equal to or less than a predetermined threshold. .

[0009] In order to solve the above problem, a program according to the present disclosure causes a computer of a parking management device to execute the following steps: receiving photographic information acquired by capturing an image of a marker that is provided in a parking space in a parking lot and that is blocked by a vehicle when parking, using an image capturing unit that includes the parking space in its photographic range; and determining the parking situation of the parking space based on whether an image of the marker included in the photographic information satisfies a predetermined condition. The marker has a rod shape extending in one direction, and in the step of determining the parking status of the parking space, the computer of the parking management device is caused to execute a step of determining the parking status of the parking space based on whether a marker discrimination ratio, which is a ratio of the length of the marker when the parking space is vacant to the length of the portion of the marker photographed by the photographing unit, is equal to or less than a predetermined threshold. . [Effects of the Invention]

[0010] According to the parking management device, parking management system, parking management method, and program of the present disclosure, it is possible to grasp the parking status of each parking space. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a diagram illustrating the overall configuration of a parking management system according to an embodiment of the present disclosure. [Figure 2] 1 is a diagram illustrating an overall configuration of a parking management system and a functional configuration of a parking management device according to an embodiment of the present disclosure. [Figure 3] FIG. 2 is a diagram illustrating a functional configuration of a processor of the parking management device according to an embodiment of the present disclosure. [Figure 4] FIG. 10 is a diagram showing a state in which a marker in a parking space according to an embodiment of the present disclosure is blocked by a parked vehicle, and the marker is present in multiple locations on the image. [Figure 5] 1 is a first flowchart illustrating an example of processing of a parking management device according to an embodiment of the present disclosure. [Figure 6] FIG. 2 is a second flowchart illustrating an example of processing of the parking management device according to an embodiment of the present disclosure. [Figure 7] FIG. 10 is a third flowchart illustrating an example of processing of the parking management device according to an embodiment of the present disclosure. [Figure 8] FIG. 4 is a fourth flowchart illustrating an example of processing of the parking management device according to an embodiment of the present disclosure. [Figure 9] 10 is a graph illustrating a criterion for determining availability based on a marker discrimination ratio according to an embodiment of the present disclosure. [Figure 10] 10 is a graph showing a criterion for determining illegal parking based on a marker discrimination ratio according to an embodiment of the present disclosure. [Figure 11] FIG. 10 is a diagram showing a marker in a parking space according to a modified example of the present disclosure. [Figure 12] FIG. 10 is a diagram showing a marker in a parking space according to a modified example of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, a parking management system 1 and a parking management device 10 according to an embodiment of the present disclosure will be described with reference to the drawings. FIG. 1 is a diagram showing the overall configuration of a parking management system according to an embodiment of the present disclosure. As shown in FIG. 1, the parking management system 1 includes a parking space S, a parking frame 2, a marker 3, a photographing unit 4, a parking management device 10, a control device 5, and an external device 6.

[0013] The parking management system 1 and the parking management device 10 are used to manage vehicles V in a facility equipped with a parking lot F. A facility in which the parking management system 1 and the parking management device 10 are used is, for example, a free rest facility on a highway. Examples of free rest facilities on a highway include a parking area (PA), a service area (SA), and a highway oasis (HO). Parking lot F has multiple parking spaces S.

[0014] Each parking space S typically accommodates one vehicle V. The parking spaces S include a standard vehicle parking space S1 and a large vehicle parking space S2.

[0015] The standard vehicle parking space S1 is a parking space S that accommodates a standard vehicle V1. The large vehicle parking space S2 is a parking space S that accommodates a large vehicle V2. The large vehicle V2 here refers to any vehicle V that is longer in the front-to-rear direction than a standard vehicle V1. In this embodiment, a truck will be used as an example of the large vehicle V2.

[0016] The front-to-rear direction refers to the front-to-rear direction of each vehicle V parked in each parking space S. The parking space S in this embodiment is a space surrounded by rectangular parking stalls 2.

[0017] A plurality of parking spaces 2 are provided in the parking lot F. The parking spaces 2 are rectangular white lines painted on the road surface in the parking lot F. The space within the parking space 2 becomes the parking space S for the vehicle V. The plurality of parking spaces 2 include standard vehicle parking spaces 2a and large vehicle parking spaces 2b.

[0018] The standard vehicle parking frame 2a is a parking frame 2 that partitions the standard vehicle parking space S1 in the parking lot F. The large vehicle parking frame 2b is a parking frame 2 that partitions the parking lot F into a large vehicle parking space S2.

[0019] In the following, the longitudinal and horizontal direction of each vehicle V parked in each parking space S may be referred to as the "longitudinal direction," and the direction perpendicular to the longitudinal direction and horizontal direction may be referred to as the "lateral direction." Furthermore, the lateral dimension of the parking stall 2 may be simply referred to as the "lateral width A," the longitudinal dimension of the parking stall 2 may be simply referred to as the "lateral width B," and the ratio of the "lateral width B" to the "lateral width A" of the parking stall 2 may be referred to as the "aspect ratio" (= B / A).

[0020] In this embodiment, the width A of the standard vehicle parking space 2a is, for example, 2.5 mm, and the length B of the standard vehicle parking space 2a is, for example, 5.0 mm. The width A of the large vehicle parking space 2b is, for example, 3.3 mm, and the length B of the large vehicle parking space 2b is, for example, 13.0 mm. A marker 3 is provided in each parking stall 2. That is, the marker 3 is provided in each parking space S.

[0021] A plurality of markers 3 are provided in the parking lot F. The markers 3 are provided at positions in the parking space S where the vehicle V will be parked, and at least a portion of the markers 3 is blocked by the vehicle V when the vehicle V is parked in the field of view of the imaging unit 4. In this embodiment, the shape of the markers 3 is a bar extending in one direction. The markers 3 are rectangular white lines drawn on the road surface of the parking lot F. The markers 3 are located in the horizontal center of the parking stall 2 and extend vertically.

[0022] Hereinafter, the vertical dimension of the marker 3 may be referred to as the "length of the marker 3." The length of the marker 3 is set for each vehicle type corresponding to the parking space S. Specifically, the length of the marker 3 is set to a length such that both ends of the marker 3 in the vertical direction approach the parking space 2 but do not connect to the parking space 2.

[0023] The plurality of markers 3 include a standard vehicle marker 3a and a large vehicle marker 3b. The standard vehicle marker 3a is a marker 3 provided in the standard vehicle parking space S1. The large vehicle marker 3b is a marker 3 provided in the large vehicle parking space S2. The length of the large vehicle marker 3b is shorter than the length of the standard vehicle marker 3a. All the markers 3 in the parking lot F are photographed by the photographing unit 4.

[0024] The photographing range of the photographing unit 4 includes the parking space S. A plurality of photographing units 4 are provided. In this embodiment, the photographing units 4 are fixed cameras installed in the parking lot F. The photographing units 4 are installed at a position higher than the vehicle height of the vehicle V.

[0025] One photographing unit 4 is installed for each group of multiple parking spaces S. The photographing unit 4 photographs all of the parking frames 2 and markers 3 in the corresponding group for each parking space S. All of the parking frames 2 and markers 3 in the parking lot F are photographed by the multiple photographing units 4, without any omissions.

[0026] The photographing unit 4 acquires photographing information by photographing the parking space 2 and the marker 3. In this embodiment, the photographing unit 4 constantly photographs the parking space 2 and the marker 3. The photographing information includes images of the parking space 2 and the marker 3. In this embodiment, the image acquired by the photographing unit 4 is acquired as, for example, a video. The photographing information acquired by the photographing unit 4 is transmitted to the parking management device 10.

[0027] The parking management device 10 is a so-called center server (computer). The parking management device 10 processes the photographing information sent from the photographing unit 4 and acquires parking lot information. The parking lot information includes the availability of each parking space S, the number of available parking spaces S in the parking lot F, the status of illegal parking in each parking space S, and the number of illegally parked vehicles in the parking lot F. Illegal parking means that a standard vehicle V1 is parked in a large vehicle parking space S2. The functional configuration of the parking management device 10 will be described in detail later. The parking management device 10 transmits the parking lot information to the control device 5.

[0028] The control device 5 is installed in a control room that controls each system and device in the parking lot F. The control device 5 includes an input unit 5a and a display unit 5b. The input unit 5a inputs various parameters required for the processing of the parking management device 10 to the parking management device 10. The display unit 5b displays parking lot information from the parking management device 10. That is, the display unit 5b displays the availability of each parking space S, the number of available parking spaces S in the parking lot F, the status of illegal parking in each parking space S, and the number of illegal parking spaces in the parking lot F. The parking lot information displayed on the display unit 5b can be viewed by a user in the control room. The control device 5 transmits to the external device 6 the parking lot information from the parking management device 10 and other information based on the parking lot information.

[0029] Examples of the external device 6 include a main line bulletin board installed on the main line of the expressway, an antenna for a transportation system, etc. The main line bulletin board displays the utilization rate of parking lot F, for example, based on information from the control device 5. The antenna transmits the utilization rate of parking lot F in real time to the car navigation system of the vehicle V traveling on the main line of the expressway, for example, based on information from the control device 5.

[0030] (Functional configuration of parking management device) The functional configuration of the parking management device 10 will be described with reference to FIG. FIG. 2 is a diagram showing the overall configuration of the parking management system and the functional configuration of the parking management device according to the embodiment of the present disclosure. As shown in FIG. 2, the parking management device 10 includes a processor 20, a main memory 11, a storage 12, and a communication interface 13.

[0031] The processor 20 is, for example, a CPU, and executes each process of the parking management device 10. The function of the processor 20 will be described later.

[0032] The main memory 11 has a memory area necessary for the processor 20 to operate.

[0033] The storage 12 is a so-called auxiliary storage device. Examples of the storage 12 include a magnetic disk, a magneto-optical disk, a semiconductor memory, etc. The storage 12 may be an internal medium directly connected to the computer bus, or an external medium connected to the parking management device 10 (computer) via the communication interface 13 or a communication line.

[0034] The communication interface 13 is an interface for transmitting and receiving information to and from the photographing unit 4 and the control device 5 that are installed outside the parking management device 10.

[0035] Next, we will explain the functions of the processor 20. The processor 20 performs the following functions by operating in accordance with a predetermined program.

[0036] FIG. 3 is a diagram illustrating a functional configuration of a processor of the parking management device according to an embodiment of the present disclosure. As shown in Figure 3, the processor 20 has functions as a receiving unit 21, a detecting unit 22, an aspect ratio calculating unit 23, a discrimination ratio calculating unit 24, a determining unit 30, a vacant number calculating unit 25, a illegal parking number calculating unit 26, and a notifying unit 27.

[0037] The receiving unit 21 receives various parameters input from the input unit 5 a of the control device 5 . In addition, the receiving unit 21 receives photographing information acquired by photographing by the photographing unit 4. The photographing information includes, for example, the shape of the marker 3, the width A of the parking space 2, the length B of the parking space 2, etc.

[0038] The detection unit 22 detects the parking space 2 and the marker 3 from the photographed information.

[0039] The aspect ratio calculation unit 23 calculates the aspect ratio of the parking space 2. The discrimination ratio calculation unit 24 calculates the marker discrimination ratio Y. Here, the marker discrimination ratio Y is the ratio of the length X0 of the portion of the marker 3 captured by the image capturing unit 4 to the length XA of the marker 3 when the parking space S is empty. That is, the marker discrimination ratio Y is calculated by the formula Y=X0 / XA.

[0040] For example, when the parking space 2 is not parked, the marker 3 is not blocked by the vehicle V, so the entire marker 3 is photographed by the photographing unit 4. Therefore, XO=XA. Therefore, when the parking space 2 is not parked, Y=1. On the other hand, when the parking space 2 is not parked, XO <XAとなるため、0≦Y<1となる。

[0041] FIG. 4 is a diagram showing a state in which the markers in a parking space according to the embodiment of the present disclosure are blocked by parked vehicles, and the markers 3 are present in multiple locations on the image. As shown in Figure 4, when a marker 3 in a parking space S is blocked by a vehicle V and there are multiple markers 3 in one direction in the image, the discrimination ratio calculation unit 24 calculates the marker discrimination ratio Y by taking the sum of the lengths of the multiple markers 3 present in the image as the length XO of the part of the marker 3 photographed by the photographing unit 4. For example, in the case shown in Figure 4, of the markers 3 present in front of and behind the vehicle V on the image, the length of the marker 3 in front of the vehicle V is X1, and the length of the marker 3 behind the vehicle V is X2.The length X0 of the part of the marker 3 photographed by the photographing unit 4 is set to X0 = X1 + X2, and the marker identification ratio Y (= X0 / XA) is calculated.

[0042] 3, the determination unit 30 determines the parking status of the parking space S based on whether the image of the marker 3 included in the photographing information satisfies a predetermined condition. The parking status means the availability status and illegal parking status for one parking space S. In this embodiment, the determination unit 30 determines the parking situation of the parking space S based on whether the marker discrimination ratio Y is equal to or less than a predetermined threshold value. The determination unit 30 includes a compatible vehicle type determination unit 31, a marker determination unit 32, a vacant parking space determination unit 33, and a illegal parking determination unit .

[0043] The compatible vehicle type determination unit 31 determines that the compatible vehicle type of the parking space S is a standard vehicle V1 when the aspect ratio of the parking space 2 is equal to or less than a predetermined vehicle type determination threshold, and determines that the compatible vehicle type of the parking space S is a large vehicle V2 when the aspect ratio is not equal to or less than the vehicle type determination threshold. The vehicle type determination threshold is set in advance by input from the input unit 5a of the control device 5.

[0044] The marker determination unit 32 determines whether or not there is one marker 3 in the parking space S based on the photographed information.

[0045] If the marker discrimination ratio Y is not equal to or less than the vacancy determination threshold, the vacancy determination unit 33 determines that the parking space S is vacant. The vacancy determination value is set in advance by input from the input unit 5a of the control device 5.

[0046] The illegal parking determination unit 34 determines whether the marker discrimination ratio Y is equal to or less than the violation determination threshold. Not If so, it is determined that the parking space S is illegally parked. The violation determination threshold is set in advance by input from the input unit 5a of the control device 5. In this embodiment, if the compatible vehicle type determination unit 31 determines that the compatible vehicle type of the parking space S is a large vehicle V2, the illegal parking determination unit 34 compares the marker identification ratio Y with the violation determination threshold, and if the marker identification ratio Y is not equal to or less than the violation determination threshold, determines that the parking space S is illegally parked. When the compatible vehicle type determination unit 31 determines that the compatible vehicle type of the parking space S is a standard vehicle V1, the illegal parking determination unit 34 determines that the parking space S is parked normally.

[0047] The vacant number calculation unit 25 calculates the number of vacant parking spaces S in the parking lot F based on the determination result of the vacant space determination unit 33.

[0048] The illegal parking number calculation unit 26 calculates the number of illegal parking spaces S in the parking lot F based on the determination result of the illegal parking determination unit 34.

[0049] The notification unit 27 notifies the display unit 5b of the control device 5 of parking lot information for the entire parking lot F.

[0050] (Parking management device processing flow) The flow of processing by the parking management device 10 will be described below with reference to FIGS. Before executing the processing of the parking management device 10, the input unit 5a of the control device 5 inputs various parameters to the parking management device 10. The parameters input from the input unit 5a include, for example, the length of the marker 3 and various thresholds (a vehicle type determination threshold, a vacant space determination threshold, a violation determination threshold, etc.). The receiving unit 21 receives various parameters input from the input unit 5a of the control device 5. These parameters are stored in the storage 12. Once the input of parameters is complete, the parking management device 10 becomes ready to execute processing.

[0051] FIG. 5 is a first flowchart illustrating an example of processing of the parking management device according to the embodiment of the present disclosure. First, the receiving unit 21 receives the imaging information transmitted from the imaging unit 4 (step S10). The received imaging information is stored in the storage 12. In this embodiment, the receiving unit 21 constantly receives the imaging information.

[0052] Subsequently, the determination unit 30 performs the parking situation determination process S20. The parking management device 10 of this embodiment is a so-called timer type that starts the parking situation determination process S20 at regular time intervals.

[0053] The parking situation determination process S20 is a step of determining the parking situation of the parking space S based on whether the image of the marker 3 included in the photographing information satisfies a predetermined condition. In this embodiment, in the parking situation determination process S20, the determination unit 30 determines the parking situation of the parking space S based on whether the marker discrimination ratio Y is equal to or less than a predetermined threshold. The flow of the parking situation determination process S20 will be described with reference to the flowchart in FIG. 6.

[0054] FIG. 6 is a second flowchart illustrating an example of the processing of the parking management device according to the embodiment of the present disclosure. In the parking situation determination process S20, first, the detection unit 22 detects the parking frame 2 for each parking space S (step S200). In step S200, the width A and the length B of the parking frame 2 are detected. In this embodiment, the standard vehicle parking space 2a is detected as having a width A of 2.5 m and a length B of 5.0 m. The large vehicle parking space 2b is detected as having a width A of 3.3 m and a length B of 13.0 m.

[0055] Next, the aspect ratio calculation unit 23 calculates the aspect ratio of the parking space 2 from the width A and the length B of the parking space 2 (step S201). In this embodiment, for the standard vehicle parking space 2a, the aspect ratio is calculated as (=B / A=5.0 / 2.5=) 2.0. For the large vehicle parking space 2b, the aspect ratio is calculated as (=B / A=13.0 / 3.3=) 3.9 (in this example, the value is rounded to the nearest tenth). After calculating the aspect ratio, the compatible vehicle model determination unit 31 performs the compatible vehicle model determination process S30. The flow of the compatible vehicle model determination process S30 will be described with reference to the flowchart of FIG.

[0056] FIG. 7 is a third flowchart illustrating an example of the processing of the parking management device according to the embodiment of the present disclosure. In the compatible vehicle type determination process S30, first, the compatible vehicle type determination unit 31 determines whether the aspect ratio of the parking space 2 is equal to or less than the vehicle type determination threshold input in advance (step S300). In this embodiment, the vehicle type determination threshold is, for example, 2.5.

[0057] If the aspect ratio of the parking space 2 is equal to or less than the vehicle type determination threshold (step S300; YES), the corresponding vehicle type determination unit 31 determines that the vehicle type corresponding to the parking space S is a standard vehicle V1 (step S301). In this embodiment, the aspect ratio of the standard vehicle parking space 2a is 2.0, which is equal to or less than the vehicle type determination threshold of 2.5. In this way, the corresponding vehicle type of the standard vehicle parking space 2a is correctly determined to be a standard vehicle parking space 2a.

[0058] When the vehicle type of the parking space 2 is determined to be the standard vehicle V1, the parking management device 10 ends the vehicle type determination process S30 and returns to the flowchart of FIG.

[0059] Furthermore, if the aspect ratio is not equal to or less than the vehicle type determination threshold (step S300; NO), the corresponding vehicle type determination unit 31 determines that the vehicle type corresponding to the parking space S is a large vehicle V2 (step S302). In this embodiment, the aspect ratio of the large vehicle parking space 2b is 3.9, which is not equal to or less than the vehicle type determination threshold of 2.5. In this way, the corresponding vehicle type of the large vehicle parking space 2b is correctly determined to be a large vehicle parking space 2b.

[0060] When the vehicle type of the parking space 2 is determined to be a large vehicle V2, the vehicle type determination unit 31 sets a flag indicating that the parking space S is suitable for large vehicles (step S303). Then, the parking management device 10 ends the vehicle type determination process S30 and returns to the flowchart of FIG.

[0061] After the compatible vehicle type determination process S30, the detection unit 22 detects a marker 3 for the parking space S that was the target of the compatible vehicle type determination process S30 (step S202). Then, the marker discrimination ratio calculation process S40 is performed. The flow of the marker discrimination ratio calculation process S40 will be described with reference to the flowchart in FIG.

[0062] FIG. 8 is a fourth flowchart illustrating an example of processing of the parking management device according to the embodiment of the present disclosure. In the marker discrimination ratio Y calculation process S40, first, the marker determination unit 32 determines whether or not there is one marker 3 in the parking space S on the image based on the photographing information (step S400). If there is one marker 3 in the parking space S (step S400; YES), the discrimination ratio calculation unit 24 calculates the marker discrimination ratio Y (step S401). Then, the parking management device 10 ends the marker discrimination ratio calculation process S40 and returns to the flowchart of FIG.

[0063] If there is more than one marker 3 in the parking space S (step S402; NO), for example, as shown in FIG. 4, the marker 3 in the parking space S is blocked by the vehicle V, and the marker 3 is present at multiple locations in one direction in the image along which the marker 3 extends. In this case, the multiple markers 3 present in the image are integrated into a single marker 3 to calculate the marker discrimination ratio Y (step S402). That is, in step S402, the discrimination ratio calculation unit 24 calculates the marker discrimination ratio Y by taking the sum of the lengths of the multiple markers 3 present in the image as the length of the portion of the marker 3 photographed by the photographing unit 4. Then, the parking management device 10 ends the marker discrimination ratio calculation process S40 and returns to the flowchart of FIG. 6.

[0064] After the marker discrimination ratio calculation process S40, the availability determination unit 33 determines whether the marker discrimination ratio Y of the marker 3 that was the target of the marker discrimination ratio calculation process S40 is equal to or less than a pre-input availability determination value (step S204). In this embodiment, the vacancy determination value is, for example, 0.7.

[0065] FIG. 9 is a graph showing a criterion for determining availability based on a marker discrimination ratio according to an embodiment of the disclosure. As shown in FIG. 9, if the marker discrimination ratio Y is not equal to or less than the vacancy determination threshold (step S203; NO), the vacancy determination unit 33 determines that the parking space S is vacant (step S204).

[0066] Thereafter, the determination unit 30 further determines whether there is a next parking space 2 (step S205). If there is a next parking space 2 (step S205; NO), the parking management device 10 returns to step S200 and executes the processing from step S200 onwards for the next parking space 2. If there is no next parking space 2 (step S205; YES), the parking management device 10 ends the parking situation determination processing S20 and returns to the flowchart of FIG. 5.

[0067] Furthermore, as shown in FIG. 9, if the marker discrimination ratio Y is equal to or less than the vacancy determination threshold (step S203; YES), the vacancy determination unit 33 determines that the parking space S is occupied (step S206).

[0068] The determination result of the vacancy determination unit 33 is stored in the storage 12 for each parking space S.

[0069] Next, the illegal parking determination unit 34 determines whether the vehicle type corresponding to the parking space S is a large vehicle V2 based on the presence or absence of the large vehicle compatible flag given by the compatible vehicle type determination unit 31 in step S303 (step S207).

[0070] Furthermore, if the flag for large vehicles is present and it is determined that the corresponding vehicle V in the parking space S is a large vehicle V2 (step S207; YES), the illegal parking determination unit 34 compares the marker identification ratio Y with the violation determination threshold and determines whether it is equal to or less than the violation determination threshold (step S208). In this embodiment, the violation determination threshold is, for example, 0.4.

[0071] FIG. 10 is a graph showing a criterion for determining illegal parking based on a marker discrimination ratio according to an embodiment of the present disclosure. As shown in FIG. 10, if the marker discrimination ratio Y is equal to or less than the violation determination threshold (step S208; YES), the illegal parking determination unit 34 determines that the parking space S is a normally parked space (step S209).

[0072] Thereafter, the determination unit 30 further determines whether there is a next parking space 2 (step S210). If there is a next parking space 2 (step S210; NO), the parking management device 10 returns to step S200 and executes the processing from step S200 onwards for the next parking space 2. If there is no next parking space 2 (step S210; YES), the parking management device 10 ends the parking situation determination processing S20 and returns to the flowchart of FIG. 5.

[0073] Furthermore, as shown in FIG. 10, if the marker discrimination ratio Y is not equal to or less than the violation determination threshold (step S208; NO), the illegal parking determination unit 34 determines that the parking space S is illegally parked (step S211).

[0074] Thereafter, the determination unit 30 further determines whether there is a next parking space 2 (step S210). If there is a next parking space 2 (step S210; NO), the parking management device 10 returns to step S200 and executes the processing from step S200 onwards for the next parking space 2. If there is no next parking space 2 (step S210; YES), the parking management device 10 ends the parking situation determination processing S20 and returns to the flowchart of FIG. 5.

[0075] Furthermore, if there is no flag for large vehicles and the corresponding vehicle V of the parking space S is determined to be not a large vehicle V2, i.e., a standard vehicle V1 (step S207; NO), the illegal parking determination unit 34 determines that the parking space S is parked normally (step S209).

[0076] Thereafter, the determination unit 30 further determines whether there is a next parking space 2 (step S210). If there is a next parking space 2 (step S210; NO), the parking management device 10 returns to step S200 and executes the processing from step S200 onwards for the next parking space 2. If there is no next parking space 2 (step S210; YES), the parking management device 10 ends the parking situation determination processing S20 and returns to the flowchart of FIG. 5.

[0077] The determination result of the illegal parking determination unit 34 is stored in the storage 12 for each parking space S.

[0078] After the parking situation determination process S20, the vacant number calculation unit 25 calculates the number of vacant parking spaces S in the parking lot F based on the determination result of the vacant space determination unit 33 (step S11).

[0079] Next, the illegal parking number calculation unit 26 calculates the number of illegal parking spaces S in the parking lot F based on the determination result of the illegal parking determination unit 34 (step S12).

[0080] Thereafter, the notification unit 27 notifies the display unit 5b of the control device 5 of parking information for the entire parking lot F (step S13). The parking information includes the number of vacant spaces and the number of illegally parked spaces in the parking lot F, as well as the vacant status and illegal parking status of each parking space S. When the notification unit 27 notifies the parking lot information, the parking management device 10 ends the flow of FIG.

[0081] The parking management device 10 constantly receives photographic information at the receiving unit 21 and starts the parking situation determination process S20 at regular intervals. In this way, the parking management device 10 repeatedly executes the series of processes shown in the flowchart of Fig. 6 at regular intervals.

[0082] (Action and effect) As described above, the parking management device 10 includes the receiving unit 21 and the determining unit 30. The receiving unit 21 receives photographing information acquired by photographing the marker 3 by the photographing unit 4, whose photographing range includes the parking space S. The determining unit 30 determines the parking situation of the parking space S based on whether the image of the marker 3 included in the photographing information satisfies predetermined conditions.

[0083] In this way, the parking management device 10 can determine the parking situation of the parking space S based on the photographed information. This allows the parking management device 10 to grasp the parking situation for each parking space S.

[0084] The shape of the marker 3 is a bar extending in one direction. The determination unit 30 determines the parking situation of the parking space S based on whether the marker discrimination ratio Y is equal to or less than a predetermined threshold value.

[0085] The marker discrimination ratio Y is a ratio between two lengths and is therefore calculated clearly. The parking management device 10 of this embodiment determines the parking situation of the parking space S based on this clear marker discrimination ratio Y. Therefore, the parking management device 10 can accurately determine the parking situation of the parking space S. Therefore, the parking management device 10 can accurately grasp the parking situation of each parking space S.

[0086] The parking management device 10 further includes a discrimination ratio calculation unit 24. When the marker 3 is blocked by the vehicle V and exists at multiple locations on the image in one direction in which the marker 3 extends, the discrimination ratio calculation unit 24 calculates a marker discrimination ratio Y by taking the sum of the lengths of the multiple markers 3 existing on the image as the length of the portion of the marker 3 photographed by the photographing unit 4.

[0087] By doing this, even if the vehicle V is parked in the center of the markers 3 and the markers 3 on the image are present in front of and behind the vehicle V, the parking management device 10 can determine the parking situation of the parking space S based on the marker discrimination ratio Y. This allows the parking management device 10 to determine the parking situation of the parking space S regardless of the parking position of the vehicle V. Therefore, the parking management device 10 can grasp the parking situation of each parking space S more accurately.

[0088] The determination unit 30 also includes a vacancy determination unit 33. The vacancy determination unit 33 determines that the parking space S is vacant when the marker discrimination ratio Y is not equal to or less than the vacancy determination threshold.

[0089] In this way, the parking management device 10 can accurately determine whether the parking space S is vacant or not based on the marker discrimination ratio Y. This allows the parking management device 10 to accurately grasp the vacant status of each parking space S.

[0090] The parking management device 10 further includes a vacant number calculation unit 25. The vacant number calculation unit 25 calculates the number of vacant parking spaces S in the parking lot F based on the determination result of the vacant space determination unit 33.

[0091] In this way, the parking management device 10 can accurately calculate the number of vacant parking spaces S in the parking lot.

[0092] The determination unit 30 also includes an illegal parking determination unit 34. The illegal parking determination unit 34 determines whether the marker discrimination ratio Y is equal to or smaller than the violation determination threshold. Not In this case, it is determined that the parking space S is illegally parked.

[0093] In this way, the parking management device 10 can determine whether or not the parking space S is illegally parked based on the marker discrimination ratio Y. This allows the parking management device 10 to grasp whether or not each parking space S is illegally parked.

[0094] The parking management device 10 further includes an illegal parking number calculation unit 26 that calculates the number of illegally parked parking spaces S in the parking lot F based on the determination result of the illegal parking determination unit 34.

[0095] In this way, the parking management device 10 can calculate the number of illegally parked parking spaces S in the parking lot F.

[0096] The determination unit 30 also has a compatible vehicle type determination unit 31. If the aspect ratio of the parking space 2 is equal to or less than a predetermined vehicle type determination threshold, the compatible vehicle type determination unit 31 determines that the compatible vehicle type of the parking space S is a standard vehicle V1, and if the aspect ratio is not equal to or less than the vehicle type determination threshold, the compatible vehicle type of the parking space S is a large vehicle V2. If the compatible vehicle type determination unit 31 determines that the compatible vehicle type of the parking space S is a large vehicle V2, the illegal parking determination unit 34 compares the marker discrimination ratio Y with a violation determination threshold, and if the marker discrimination ratio Y is not equal to or less than the violation determination threshold, determines that the parking space S is illegally parked. If the compatible vehicle type determination unit 31 determines that the compatible vehicle type of the parking space S is a standard vehicle V1, the illegal parking determination unit 34 determines that the parking space S is normally parked.

[0097] In this way, the parking management device 10 can determine whether or not the parking space S is illegally parked depending on the vehicle type corresponding to the parking stall 2. This allows the parking management device 10 to accurately determine whether or not each parking space S is illegally parked. Furthermore, when the corresponding vehicle V of the parking space S is a standard vehicle V1, the illegal parking determination unit 34 can determine that the parking space S is normally parked without comparing the marker discrimination ratio Y with the violation determination threshold. Therefore, the parking management device 10 can improve the determination efficiency of the determination unit 30.

[0098] The parking management system 1 also includes a display unit 5b that displays information from the parking management device 10.

[0099] In this way, the parking management system 1 allows the user to visually recognize the information displayed on the display unit 5b.

[0100] As described above, the embodiments of the present disclosure have been described, but these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope of the invention and its equivalents as defined in the claims, as well as in the scope and spirit of the invention.

[0101] In the above embodiment, the parking management system 1 and the parking management device 10 are used in a parking lot F that has both standard vehicle parking spaces S1 and large vehicle parking spaces S2, but this is not limited to this. The parking management system 1 and the parking management device 10 may also be used in a parking lot F that has only one type of parking space S. In this case, the parking management device 10 does not need to be equipped with the compatible vehicle type determination unit 31, the illegal parking determination unit 34, and the aspect ratio calculation unit 23.

[0102] In the above embodiment, the marker 3 has a rod shape extending in one direction, but the shape is not limited to this. For example, the marker 3 may have a round or star shape. In this case, the marker discrimination ratio Y is not calculated, and the vacancy determination unit 33 determines whether the parking space S is vacant based on whether the marker 3 is obstructed.

[0103] 11, the markers 3 may be arranged to extend horizontally. In this modification, a plurality of markers 3 are arranged vertically. In this case, the determination unit 30 may determine the parking situation of each parking space S based on the number of markers 3 that are blocked by parking, rather than the marker discrimination ratio Y.

[0104] 12, the markers 3 may be provided so as to be inclined with respect to the vertical direction. In this modification, a plurality of markers 3 are provided. The inclination of each marker 3 may be different. In any of the above-described embodiment and the modified examples shown in FIGS. 11 and 12, the shape and number of the markers 3 can be changed as appropriate.

[0105] In the above embodiment, one photographing unit 4 is installed for each set of multiple parking spaces S, and the parking management system 1 is described as having the multiple photographing units 4 share the responsibility of photographing all parking stalls 2 and markers 3 in the parking lot F, but this is not limited to this. For example, one photographing unit 4 may be provided for each parking space S. In this case, the photographing unit 4 photographs the parking stalls 2 and markers 3 only for the corresponding parking space S. Also, only one photographing unit 4 may be provided in the parking lot F. In this case, the parking management system 1 photographs all of the parking spaces 2 and markers 3 in the parking lot F with the single photographing unit 4.

[0106] In the above embodiment, the photographing unit 4 is a fixed camera, but the present invention is not limited to this. For example, the photographing unit 4 may be a vehicle-mounted or portable camera.

[0107] In the above embodiment, the photographing unit 4 constantly photographs the parking space S, and the image captured by the photographing unit 4 is captured as, for example, a video, but this is not limiting. For example, the image captured by the photographing unit 4 may be captured as, for example, a still image.

[0108] In the above embodiment, the parking management device 10 has been described as having the detection unit 22, but this is not limited to this. The detection unit 22 may be provided in the photographing unit 4. In this case, the photographing information includes information on the parking space 2 and the marker 3 detected by the detection unit 22.

[0109] Furthermore, when the detection unit 22 is provided in the imaging unit 4, the aspect ratio calculation unit 23 and the discrimination ratio calculation unit 24 may be provided in the imaging unit 4. In this case, the imaging information includes the aspect ratio calculated by the aspect ratio calculation unit 23 and the marker discrimination ratio Y calculated by the discrimination ratio calculation unit 24.

[0110] In the above embodiment, the determination unit 30 has both the vacant parking space determination unit 33 and the illegal parking space determination unit 34, but this is not limited to this. The determination unit 30 may have only one of the vacant parking space determination unit 33 and the illegal parking space determination unit 34.

[0111] In the above embodiment, the function of the illegal parking determination unit 34 has been described for the case where one standard vehicle V1 is parked in the large vehicle parking space S2 as shown in Fig. 4, but the present invention is not limited to this. The illegal parking determination unit 34 may determine that there is a suspicion of illegal parking based on the marker 3 when multiple standard vehicles V1 are parked in the large vehicle parking space S2.

[0112] In the above embodiment, the parking management device 10 starts the parking situation determination process S20 at regular intervals, which is a so-called timer type, but the present invention is not limited to this. The parking management device 10 may also be an event type, which constantly executes the parking situation determination process S20 and notifies the user when a change occurs in the determination result.

[0113] <Additional Notes> The parking management device, parking management system, parking management method, and program described in the above embodiments can be understood, for example, as follows.

[0114] According to a first aspect of the present disclosure, a parking management device (10) includes a receiving unit (21) that receives photographic information obtained when a marker (3) that is installed within a parking space in a parking lot and is blocked by a vehicle when parking is photographed by a photographing unit (4) that includes the parking space in its photographing range, and a determining unit (30) that determines the parking status of the parking space based on whether an image of the marker included in the photographic information satisfies predetermined conditions.

[0115] In this way, the parking management device can determine the parking situation of the parking space based on the photographed information, thereby understanding the parking situation for each parking space.

[0116] According to a second aspect of the present disclosure, in the parking management device (10) relating to the first aspect, the shape of the marker (3) is a rod extending in one direction, and the judgment unit (30) judges the parking situation of the parking space S based on whether the marker discrimination ratio, which is the ratio of the length of the part of the marker photographed by the photographing unit (4) to the length of the marker when the parking space is vacant, is equal to or less than a predetermined threshold.

[0117] The marker discrimination ratio is a ratio between two lengths and is therefore calculated clearly. The parking management device 10 of this embodiment determines the parking situation of a parking space based on this clear marker discrimination ratio. Therefore, the parking management device can accurately determine the parking situation of a parking space. Therefore, the parking management device can accurately grasp the parking situation of each parking space.

[0118] According to a third aspect of the present disclosure, in the parking management device (10) according to the second aspect, the parking management device further includes a discrimination ratio calculation unit (24) that calculates the marker discrimination ratio by taking the sum of the lengths of the multiple markers present on the image as the length of the portion of the marker photographed by the photographing unit (4) when the marker (3) is blocked by a vehicle and the marker is present at multiple locations on the image in one direction in which the marker extends.

[0119] By doing this, even if a vehicle is parked in the center of the marker and markers are present in front of and behind the vehicle on the image, the parking management device can determine the parking situation of the parking space based on the marker discrimination ratio. This allows the parking management device to determine the parking situation of the parking space regardless of the parking position of the vehicle. Therefore, the parking management device can more accurately grasp the parking situation of each parking space.

[0120] According to a fourth aspect of the present disclosure, in the parking management device (10) relating to the second or third aspect, the determination unit (30) has a vacancy determination unit (33) that determines that the parking space is vacant if the marker identification ratio is not equal to or less than a vacancy determination threshold.

[0121] In this way, the parking management device can accurately determine whether a parking space is vacant or not based on the marker discrimination ratio, thereby enabling the parking management device to accurately grasp the vacancy status of each parking space.

[0122] According to a fifth aspect of the present disclosure, in the parking management device (10) relating to the fourth aspect, the parking management device further includes a vacant number calculation unit (25) that calculates the number of vacant parking spaces in the parking lot based on the judgment result of the vacant number judgment unit (33).

[0123] In this way, the parking management device can accurately calculate the number of available parking spaces in the parking lot.

[0124] According to a sixth aspect of the present disclosure, in the parking management device 10 according to any one of the second to fifth aspects, the determination unit (30) determines whether the marker discrimination ratio is equal to or less than a violation determination threshold. Not The parking system has an illegal parking determination unit (34) that determines that the parking space is illegally parked in this case.

[0125] In this way, the parking management device can determine whether or not a parking space is illegally parked based on the marker discrimination ratio, thereby enabling the parking management device to grasp whether or not a parking space is illegally parked.

[0126] According to a seventh aspect of the present disclosure, in the parking management device (10) relating to the sixth aspect, the parking management device further includes a violation parking number calculation unit (26) that calculates the number of violations in the parking spaces in the parking lot based on the judgment result of the violation parking judgment unit (34).

[0127] In this way, the parking management device can calculate the number of illegally parked parking spaces in the parking lot.

[0128] According to an eighth aspect of the present disclosure, in the parking management device (10) according to the sixth or seventh aspect, the parking space is a space surrounded by rectangular parking frames (2), the length of the marker (3) is set for each vehicle type compatible with the parking space, and the determination unit (30) has a compatible vehicle type determination unit (31) that determines that the vehicle type compatible with the parking space is a standard vehicle if the aspect ratio of the parking frame is equal to or less than a predetermined vehicle type determination threshold, and determines that the vehicle type compatible with the parking space is a large vehicle if the aspect ratio is not equal to or less than the vehicle type determination threshold, and when the compatible vehicle type determination unit determines that the vehicle type compatible with the parking space is a large vehicle, the illegal parking determination unit (34) compares the marker identification ratio with the violation determination threshold, and when the marker identification ratio is not equal to or less than the violation determination threshold, determines that the parking space is illegally parked, and when the compatible vehicle type determination unit determines that the vehicle type compatible with the parking space is a standard vehicle, the illegal parking determination unit determines that the parking space is normally parked.

[0129] In this way, the parking management device can determine whether a parking space is illegally parked or not depending on the vehicle type of the parking space. This allows the parking management device to accurately grasp whether each parking space is illegally parked or not. Furthermore, if the vehicle corresponding to the parking space is a standard vehicle, the illegal parking determination unit can determine that the parking space is normally parked without comparing the marker discrimination ratio with the violation determination threshold. Therefore, the parking management device can improve the determination efficiency of the determination unit.

[0130] According to a ninth aspect of the present disclosure, a parking management system (1) includes a parking management device (10) described in any one of the first to eighth aspects, the marker (3), and the photographing unit (4).

[0131] According to a tenth aspect of the present disclosure, in the parking management system (1) according to the ninth aspect, the parking management system further includes a display unit (5b) that displays information from the parking management device (10).

[0132] In this way, the parking management system allows the user to visually recognize the information displayed on the display unit.

[0133] According to an eleventh aspect of the present disclosure, a parking management method includes the steps of receiving photographic information obtained by photographing a marker (3) provided within a parking space in a parking lot and blocked by a vehicle when parking, using a photographing unit (4) whose photographing range includes the parking space, and determining the parking status of the parking space based on whether an image of the marker included in the photographic information satisfies predetermined conditions.

[0134] According to a twelfth aspect of the present disclosure, the program causes a computer of a parking management device (10) to execute the following steps: receiving photographic information obtained by photographing a marker (3) that is provided within a parking space in a parking lot and is blocked by a vehicle when parking, using a photographing unit (4) that includes the parking space in its photographing range; and determining the parking status of the parking space based on whether the image of the marker included in the photographic information satisfies predetermined conditions. [Explanation of symbols]

[0135] 1. Parking management system 2 parking spaces 2a Standard vehicle parking space 2b Large vehicle parking space 3 Markers 3a Regular vehicle marker 3b Large vehicle marker 4. Photography Department 5. Control device 5a Input section 5b Display section 6 External device 10 Parking management device 11. Main memory 12. Storage 13 Communication Interface 20 processors 21 Receiving unit 22 Detection unit 23 Aspect ratio calculation unit 24 Discrimination ratio calculation unit 25 Free space calculation section 26 Illegal Parking Count Unit 27 Notification Department 30 Judgment section 31 Compatible vehicle type determination section 32 Marker determination unit 33 Vacancy determination unit 34 Parking Violation Judgment Department

Claims

1. a receiving unit that receives photographic information obtained by photographing a marker that is installed in a parking space of a parking lot and is blocked by a vehicle when parking, using an imaging unit that includes the parking space in its photographing range; a determination unit that determines the parking situation of the parking space based on whether the image of the marker included in the photographing information satisfies a predetermined condition; Equipped with The marker has a rod shape extending in one direction, the determination unit determines the parking situation of the parking space based on whether a marker discrimination ratio, which is a ratio of the length of the portion of the marker photographed by the photographing unit to the length of the marker when the parking space is vacant, is equal to or less than a predetermined threshold. Parking management device.

2. and a discrimination ratio calculation unit that calculates the marker discrimination ratio by calculating the sum of lengths of the markers present on the image as the length of the portion of the marker photographed by the photographing unit when the marker is obstructed by a vehicle and the marker is present at a plurality of locations on the image in one direction in which the marker extends. The parking management device according to claim 1.

3. the determination unit includes a vacancy determination unit that determines that the parking space is vacant when the marker discrimination ratio is not equal to or less than a vacancy determination threshold. The parking management device according to claim 1 or 2.

4. The parking management device according to claim 3, further comprising a vacant number calculation unit that calculates the number of vacant parking spaces in the parking lot based on the determination result of the vacant number determination unit.

5. the determination unit includes a illegal parking determination unit that determines that the parking space is illegally parked when the marker discrimination ratio is not equal to or less than a violation determination threshold. A parking management device according to any one of claims 1 to 4.

6. The parking management device according to claim 5, further comprising an illegal parking number calculation unit that calculates the number of illegal parking spaces in the parking lot based on the determination result of the illegal parking determination unit.

7. The parking space is a space surrounded by a rectangular parking frame, The length of the marker is set for each vehicle type corresponding to the parking space, The determination unit has a corresponding vehicle type determination unit that determines that the corresponding vehicle type of the parking space is a standard vehicle when the aspect ratio of the parking frame is equal to or less than a predetermined vehicle type determination threshold, and determines that the corresponding vehicle type of the parking space is a large vehicle when the aspect ratio is not equal to or less than the vehicle type determination threshold, When the applicable vehicle type determination unit determines that the applicable vehicle type of the parking space is a large vehicle, the illegal parking determination unit compares the marker discrimination ratio with the violation determination threshold, and when the marker discrimination ratio is not equal to or less than the violation determination threshold, determines that the parking space is illegally parked, If the compatible vehicle type determination unit determines that the compatible vehicle type of the parking space is a standard vehicle, the illegal parking determination unit determines that the parking space is a normal parking space. The parking management device according to claim 5 or 6.

8. The parking management device according to any one of claims 1 to 7; the marker; The imaging unit; A parking management system comprising:

9. The parking management system according to claim 8, further comprising a display unit that displays information from the parking management device.

10. A parking management device is provided within a parking space in a parking lot, and a marker that is blocked by a vehicle when parking is photographed by a photographing unit that includes the parking space in its photographing range, thereby receiving photographing information obtained by the marker being photographed by a photographing unit that includes the parking space in its photographing range; a step in which the parking management device determines the parking status of the parking space based on whether the image of the marker included in the photographing information satisfies a predetermined condition; and The marker has a rod shape extending in one direction, In the step of determining the parking status of the parking space, the parking management device determines the parking status of the parking space based on whether a marker discrimination ratio, which is a ratio of the length of the portion of the marker photographed by the photographing unit to the length of the marker when the parking space is vacant, is equal to or less than a predetermined threshold. Parking management methods.

11. receiving photographic information acquired by photographing a marker provided in a parking space of a parking lot and blocked by a vehicle when parking, using a photographing unit whose photographing range includes the parking space; determining the parking situation of the parking space based on whether the image of the marker included in the photographing information satisfies a predetermined condition; causing a computer of the parking management device to execute the above; The marker has a rod shape extending in one direction, In the step of determining the parking status of the parking space, the computer of the parking management device is caused to execute a step of determining the parking status of the parking space based on whether a marker discrimination ratio, which is a ratio of a length of the portion of the marker photographed by the photographing unit to a length of the marker when the parking space is vacant, is equal to or less than a predetermined threshold. program.

Images