JP7255425B2 - Recording control device, recording control method, and program - Google Patents

Description

The present invention relates to a recording control device, a recording control method, and a program.

The drive recorder that monitors parking detects when the acceleration sensor detects acceleration equivalent to a collision while the vehicle is parked, or detects a moving object based on the image captured by the imaging unit. Saves recorded images as event recording data.

For example, Patent Literature 1 discloses a drive recorder that changes an acceleration threshold for detecting an event based on surrounding information during parking monitoring.

JP 2019-91292 A

When parking a vehicle, parking lots are used in most cases. Events that occur in parking lots are more likely to be minor accidents that do not generate acceleration that can be judged as a collision, rather than accidents that generate acceleration equivalent to a collision. may not be saved. For this reason, monitoring using moving object detection is effective when parking, but in this case, it may react to pedestrians or other vehicles that are not related to the accident, and unnecessary event record data may be saved.

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording control device, a recording control method, and a program capable of appropriately saving event recording data during parking monitoring.

A recording control device of the present invention includes a photographed data acquisition unit for acquiring photographed data photographed by a camera for photographing the surroundings of a vehicle, a parking detection unit for detecting that the vehicle is parked, and an acceleration information acquisition unit that acquires applied acceleration information; a moving object detection unit that detects a moving object from the imaging data acquired by the imaging data acquisition unit while the vehicle is parked; an event detection unit that determines that an event has occurred when the acceleration information acquisition unit detects acceleration equal to or greater than a predetermined value within a predetermined period; as event recording data in a recording unit.

The recording control method of the present invention includes the steps of obtaining photographed data photographed by a camera for photographing the surroundings of a vehicle, detecting that the vehicle is parked, and obtaining acceleration information applied to the vehicle. a moving body step of detecting a moving body from photographed data acquired while the vehicle is parked; and an event when an acceleration equal to or greater than a predetermined value is detected within a first predetermined time after the moving body is detected. The step of determining that an event has occurred, and the step of storing the photographed data as event record data in a recording unit when it is determined that an event has occurred.

The program of the present invention includes the steps of acquiring image data captured by a camera that captures the surroundings of a vehicle, detecting that the vehicle is parked, and acquiring acceleration information applied to the vehicle. and a moving body step of detecting a moving body from photographed data acquired while the vehicle is parked, and an event occurs when an acceleration equal to or greater than a predetermined value is detected within a first predetermined time period after the moving body is detected. and, if it is determined that an event has occurred, a step of storing photographed data as event record data in a recording unit.

According to the present invention, it is possible to appropriately store event record data during parking monitoring.

FIG. 1 is a block diagram showing an example of the configuration of a recording apparatus according to the first embodiment of the invention. FIG. 2 is a flowchart showing an example of the flow of parking monitoring processing according to the first embodiment of the present invention. FIG. 3 is a flow chart showing an example of the flow of parking monitoring processing according to the first embodiment of the present invention. FIG. 4 is a flow chart showing an example of the configuration of the recording apparatus according to the second embodiment of the invention. FIG. 5 is a flow chart showing an example of the flow of parking monitoring processing according to the second embodiment of the present invention. FIG. 6 is a flow chart showing an example of the flow of parking monitoring processing according to the second embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION Embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the present invention is not limited by this embodiment, and when there are a plurality of embodiments, a combination of each embodiment is also included.

[First embodiment]
The configuration of the recording apparatus according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing an example of the configuration of a recording apparatus according to the first embodiment of the invention.

As shown in FIG. 1, the recording apparatus 1 includes a camera 10, a recording unit 20, a CAN (Controller Area Network) interface 30, an operation unit 40, a display unit 50, an acceleration sensor 60, a GNSS (Global Navigation GPS (Global Positioning System) receiver 70, which is an example of a satellite system, and a control unit (recording control device) 100. The recording device 1 is mounted on a vehicle. The recording device 1 detects events occurring around the vehicle while the vehicle is parked, and stores them as event recording data.

The camera 10 is installed, for example, in the interior of the vehicle in which the recording device 1 is mounted, and photographs the surroundings of the vehicle. The camera 10 is, for example, a camera that captures the front of the vehicle. The camera 10 may be, for example, a combination of a camera that captures the front of the vehicle and a camera that captures the rear of the vehicle. The camera 10 may be, for example, a combination of a camera that captures the front of the vehicle and a camera that captures the interior of the vehicle. The camera 10 may be an omnidirectional camera that captures the surroundings of the vehicle. The camera 10 outputs the captured image data to the image data acquisition unit 120 .

The recording unit 20 stores various data such as event record data recorded when an event is detected. The recording unit 20 stores, for example, captured data for a predetermined period based on event detection as event recording data. The recording unit 20 can be implemented by, for example, a semiconductor memory device such as a RAM (Random Access Memory) or flash memory, or a storage device such as a hard disk or solid state drive. The recording unit 20 may be composed of a plurality of different memories or the like.

The CAN interface 30 is an interface for acquiring various vehicle information via CAN. The vehicle information includes, for example, information related to the operational status of the engine, the running status of the vehicle, and the like.

The operation unit 40 receives various operations for the control unit 100 . Various operations include operations such as initiating playback of event recording data, initiating storage of event recording data, and the like. The operation unit 40 outputs an operation signal corresponding to the received operation to the operation control unit 127 . The operation unit 40 can be realized by physical switches or a touch panel provided on the display unit 50, for example.

The display unit 50 displays various images. The display unit 50 displays event record data recorded by the recording unit 20, for example. The display unit 50 is a display including, for example, a liquid crystal display (LCD) or an organic EL (Organic Electro-Luminescence) display.

The acceleration sensor 60 detects acceleration applied to the vehicle. The acceleration sensor 60 detects acceleration applied to the vehicle during parking, for example. The acceleration sensor 60 can be implemented by, for example, a triaxial acceleration sensor. The acceleration sensor 60 outputs acceleration information regarding the detected acceleration to the acceleration information acquisition section 129 .

The GPS receiving section 70 is composed of a GPS receiving circuit, a GPS receiving antenna, etc., and receives GPS signals. GPS receiving section 70 outputs the received GPS signal to position information acquiring section 132 .

The control unit 100 executes a program (for example, a program according to the present invention) stored in a storage unit (not shown) by a CPU (Central Processing Unit) or an MPU (Micro Processing Unit), for example, using a RAM or the like as a work area. It is realized by Also, the control unit 100 is a controller, and may be implemented by an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).

The control unit 100 includes a photographed data acquisition unit 120, a buffer memory 121, a photographed data processing unit 122, a recording control unit 123, a reproduction control unit 124, a vehicle information acquisition unit 125, a parking detection unit 126, an operation A control unit 127 , a display control unit 128 , an acceleration information acquisition unit 129 , a moving object detection unit 130 , an event detection unit 131 and a position information acquisition unit 132 are provided. In FIG. 1, each unit realized by the control unit 100 is described as being connected to each other via a bus 110 for easy understanding.

The captured data acquisition unit 120 acquires various types of captured data from the outside. The captured data acquisition unit 120 acquires captured data from the camera 10, for example. The photographed data acquisition unit 120 acquires, for example, photographed data obtained by photographing the surroundings of the vehicle from the camera 10 while the vehicle is parked. The captured data acquisition unit 120 outputs, for example, captured data acquired from the camera 10 to the buffer memory 121 and the display control unit 128 . In addition to the imaged data captured by the camera 10, the imaged data acquisition unit 120 may acquire imaged data including voice data acquired by the camera 10 or a microphone (not shown) arranged at another position.

A buffer memory 121 is an internal memory of the control unit 100 that temporarily stores the image data acquired by the image data acquisition unit 120 . Specifically, the buffer memory 121 temporarily stores, while updating, the photographed data for a certain period of time acquired by the photographed data acquisition unit 120 .

The captured data processing unit 122 performs various processes on captured data temporarily stored in the buffer memory 121 . The photographed data acquisition unit 120 converts the photographed data temporarily stored in the buffer memory 121 into an arbitrary file format such as MP4 format. The photographed data processing unit 122 generates photographed data as a data file for a certain period of time, for example, from the photographed data temporarily stored in the buffer memory 121 . Specifically, the photographed data processing unit 122 generates 60 seconds of photographed data as a data file from the photographed data temporarily stored in the buffer memory 121 . The captured data processing unit 122 outputs the generated captured data to the recording control unit 123 . The captured data processing unit 122 also outputs the generated captured data to the display control unit 128 . The period of photographing data generated as a data file is set to 60 seconds as an example, but is not limited to this.

The recording control section 123 stores various data in the recording section 20 . For example, the recording control unit 123 controls the recording unit 20 to record the photographed data filed by the photographed data processing unit 122 . For example, when the event detection unit 131 detects an event, the recording control unit 123 saves shooting data related to video including the event in the recording unit 20 as event recording data. Specifically, the recording control unit 123 saves, as event recording data, captured data for a period including at least the event detection point after the moving object detection unit 130 detects the moving object.

The reproduction control section 124 reproduces various data recorded in the recording section 20 . The reproduction control unit 124 reproduces, for example, photographed data recorded as a data file in the recording unit 20 . The reproduction control unit 124 reproduces event record data stored in the recording unit 20, for example. The reproduction control section 124 reproduces arbitrary photographed data according to the control signal according to the operation of the operation section 40 output from the operation control section 127 .

The vehicle information acquisition unit 125 acquires various vehicle information via CAN from the CAN interface 30 . The vehicle information acquisition unit 125 acquires, for example, information regarding the operation of the engine of the vehicle as vehicle information. The vehicle information acquisition unit 125 outputs the acquired vehicle information to the parking detection unit 126, for example.

The parking detection unit 126 detects that the vehicle is parked. For example, based on the vehicle information received from the vehicle information acquisition unit 125, the parking detection unit 126 detects that the power such as the engine of the vehicle has been turned off, that the accessory power supply has been turned off, and that the parking gear has been selected. , that the parking brake is activated, and that the current position of the vehicle indicates a parking lot. The parking detection unit 126 detects that the vehicle is parked when, for example, acceleration exceeding a predetermined level is not detected for a predetermined period of time after the accessory power source is turned off and the only power supplied is from the battery. judge that there is Parking detector 126 may detect a combination of various conditions. The parking detection unit 126 may detect that the vehicle is parked based on the detected conditions.

The operation control unit 127 receives an operation signal regarding an operation received from the user or the like from the operation unit 40 . The operation control unit 127 receives, for example, operation signals related to operations such as starting reproduction of photographed data and starting recording of photographed data. The operation control section 127 outputs a control signal corresponding to the received operation signal to the recording control section 123 or the reproduction control section 124 . In this case, the recording control section 123 and the reproduction control section 124 operate according to the control signal.

The display control section 128 displays various images on the display section 50 . The display control unit 128 displays, for example, the shooting data and the event recording data reproduced by the reproduction control unit 124 on the display unit 50 . Specifically, the display control unit 128 displays an image on the display unit 50 by outputting a video signal to the display unit 50 . The display control unit 128 displays the shooting data on the display unit 50 by outputting video signals related to the shooting data and the event recording data recorded in the recording unit 20 to the display unit 50, for example.

The acceleration information acquisition unit 129 acquires acceleration information about acceleration applied to the vehicle from the acceleration sensor 60 . Specifically, the acceleration information acquisition unit 129 acquires acceleration information regarding the acceleration applied to the vehicle while it is parked. The acceleration information acquisition section 129 outputs the acquired acceleration information to the event detection section 131 .

The moving object detection unit 130 detects the presence or absence of a moving object from the photographed data acquired by the photographed data acquisition unit 120 while the vehicle is parked. The moving object detection unit 130 detects the presence or absence of a moving object, for example, by detecting a motion vector from photographed data. Specifically, the moving object detection unit 130 detects, for example, an area in which luminance or color information changes for each frame in units of pixels in the photographed data acquired by the photographed data acquisition unit 120, or in units of blocks of several pixels square. to detect Further, the moving object detection unit 130 detects the moving direction of the moving object from the direction of the detected motion vector of the moving object.

The event detection unit 131 detects an event that has occurred in the vehicle. The event detection unit 131 detects an event that has occurred in the vehicle based on the acquisition result of the acceleration information acquisition unit 129 and the detection result of the moving object detection unit 130 . For example, the event detection unit 131 determines that an event has occurred when the acceleration information acquisition unit 129 detects acceleration equal to or greater than a predetermined value within a first predetermined time after the moving object detection unit 130 detects the moving object. The first predetermined time is set to the extent that it can be determined that the detected moving body is associated with acceleration greater than or equal to a predetermined value detected after the detection of the moving body. The first predetermined time is, for example, 10 seconds to 60 seconds.

For example, the event detection unit 131 may lower the acceleration threshold for determining that an event has occurred for a second predetermined period of time after the moving object detection unit 130 detects the moving object. In this case, for example, when the acceleration sensor 60 is a three-axis acceleration sensor, the event detection unit 131 may lower only the threshold of the acceleration in the moving direction of the moving object detected by the moving object detection unit 130. . For example, after the moving object detection unit 130 detects a moving object, the event detection unit 131 may gradually lower the acceleration threshold for determining that an event has occurred during a second predetermined time period. good. Note that the first predetermined time and the second predetermined time may be the same or different.

The event detection unit 131 may lower the acceleration threshold for determining that an event has occurred, for example, according to the moving speed of the moving object detected by the moving object detection unit 130 . For example, the event detection unit 131 may lower the acceleration for determining that an event has occurred as the moving speed of the moving object detected by the moving object detection unit 130 decreases.

For example, the event detection unit 131 may change the acceleration threshold for determining that an event has occurred according to the distance between the vehicle and the moving object detected by the moving object detection unit 130 . For example, when the distance between the vehicle and the moving object is equal to or less than a predetermined distance, the event detection unit 131 may lower the acceleration threshold for determining that an event has occurred. For example, when the distance between the vehicle and the moving body is less than or equal to a predetermined distance and the moving speed of the moving body is less than or equal to a predetermined value, the event detection unit 131 sets an acceleration threshold for determining that an event has occurred. Can be lower.

Positional information acquiring section 132 receives GPS signals from GPS receiving section 70 . The location information acquisition unit 132 calculates current location information based on the GPS signal. The positional information acquiring unit 132 and the GPS receiving unit 70 are not limited to GPS, and may be compatible with other types of positioning satellite systems.

[Parking monitoring process]
A flow of parking monitoring processing according to the first embodiment of the present invention will be described with reference to FIG. FIG. 2 is a flowchart showing an example of the flow of parking monitoring processing according to the first embodiment of the present invention.

First, the control unit 100 starts parking monitoring processing (step S101). Specifically, the parking monitoring process is started when the parking detection unit 126 detects parking of the vehicle. Then, the process proceeds to step S102.

When the parking monitoring process is started, the control unit 100 starts acquiring photographed data (step S102). Specifically, the photographed data acquisition unit 120 acquires the photographed data around the vehicle from the camera 10 . Then, the process proceeds to step S103.

The control unit 100 determines whether or not a moving object has been detected from the acquired photographed data (step S103). Specifically, the moving object detection unit 130 detects a moving object from the photographed data acquired by the photographed data acquisition unit 120, thereby determining whether or not the moving object is included. If a moving object is detected (Yes in step S103), the process proceeds to step S104. On the other hand, if a moving object has not been detected (No in step S103), the process proceeds to step S107.

When it is determined as Yes in step S103, the control unit 100 determines whether or not the first predetermined time has passed since the moving object was detected (step S104). Specifically, the event detection unit 131 determines whether or not a first predetermined time has passed since the moving object was detected. If it is determined that the first predetermined time has not elapsed (No in step S104), the process proceeds to step S105. On the other hand, if it is determined that the first predetermined time has passed (Yes in step S104), the process proceeds to step S107.

When determined as No in step S104, the control unit 100 determines whether or not acceleration equal to or greater than a predetermined value is detected (step S105). Specifically, the event detection unit 131 determines whether or not the acceleration information acquisition unit 129 has acquired acceleration equal to or greater than a predetermined value from the acceleration sensor 60 . If it is determined that acceleration equal to or greater than the predetermined value has been detected (Yes in step S105), the process proceeds to step S106. On the other hand, if it is determined that the acceleration equal to or greater than the predetermined value is not detected (No in step S105), the process proceeds to step S104.

When it is determined as Yes in step S105, the control unit 100 saves the photographed data acquired in step S102 as event recording data in the recording unit 20 (step S106). Specifically, the recording control unit 123 stores the photographed data acquired in step S102 in the recording unit 20 as event recording data. Then, the process proceeds to step S107. If it is determined Yes in step S105, the recording control unit 123 stores the shooting data including the period from when the moving object is detected in step S103 to when at least the acceleration equal to or greater than the predetermined value is detected in step S105. It is preferable to save in the recording unit 20 as recording data. That is, the recording control unit 123 records the photographed data from when a moving object is detected in step S103 to when an acceleration equal to or greater than a predetermined value is detected in step S105 until a predetermined period of time, such as 10 seconds, elapses as event recording. It is appropriate to store it in the recording unit 20 as data.

When it is determined as Yes in step S104 and after step S106, the control unit 100 determines whether or not the parking monitoring process has ended (step S107). Specifically, the parking detection unit 126 determines whether the parking monitoring process has ended by detecting whether the parking is continued. If it is determined that the parking monitoring process has ended (Yes in step S107), the process of FIG. 2 ends. On the other hand, if it is determined that the parking monitoring process has not ended (No in step S107), the process proceeds to step S103.

The flow of parking monitoring processing according to the first embodiment of the present invention will be described with reference to FIG. FIG. 3 is a flow chart showing an example of the flow of parking monitoring processing according to the first embodiment of the present invention.

The process shown in FIG. 3 differs from the process shown in FIG. 2 in that the acceleration threshold for determining that an event has occurred is changed when a moving object is detected.

The processing from step S201 to step S203, step S208, and step S209 is the same as the processing from step S101 to step S103, step S106, and step S107 shown in FIG.

If Yes in step S203, the control unit 100 changes the acceleration threshold for determining that an event has been detected from the first acceleration threshold to the second acceleration threshold (step S204). Specifically, the event detection unit 131 changes the first acceleration threshold to a second acceleration threshold that is smaller than the first acceleration threshold. Then, the process proceeds to step S205. If the first acceleration threshold is set to, for example, 0.8G, the second acceleration threshold is changed to, for example, 0.2G.

The control unit 100 determines whether or not a second predetermined time has passed since the moving object was detected (step S205). Specifically, the event detection unit 131 determines whether or not a second predetermined time has passed since the moving object was detected. If it is determined that the second predetermined time has elapsed (Yes in step S205), the process proceeds to step S206. On the other hand, if it is determined that the second predetermined time has not elapsed (No in step S205), the process proceeds to step S207.

If determined as Yes in step S205, the control unit 100 returns the second acceleration threshold to the first acceleration threshold (step S206). Specifically, the event detection unit 131 restores the second acceleration threshold to the first acceleration threshold. Then, the process proceeds to step S209.

When determined as No in step S205, the control unit 100 determines whether or not acceleration equal to or greater than the second acceleration threshold is detected (step S207). Specifically, the event detection unit 131 determines whether the acceleration information acquisition unit 129 has acquired acceleration equal to or greater than the second acceleration threshold from the acceleration sensor 60 . If it is determined that the acceleration equal to or greater than the second acceleration threshold has been detected (Yes in step S207), the process proceeds to step S208. On the other hand, if it is determined that the acceleration equal to or greater than the second acceleration threshold is not detected (No in step S207), the process proceeds to step S205.

As described above, in the present embodiment, it is possible to store only photographed data in which a moving object is detected and acceleration of a predetermined value or more is detected within a predetermined time after the moving object is detected as event recording data. This reduces the chance that photographed data unrelated to an accident is recorded as event record data. As a result, the present embodiment can appropriately store event record data during parking monitoring.

In addition, this embodiment can lower the acceleration threshold for determining that an event has occurred when a moving object is detected. As a result, the present embodiment can more appropriately store event record data relating to accidents with small accelerations.

In addition, in this embodiment, it is possible to store, as event recording data, captured data for a period including at least the event detection point from when a moving object is detected. As a result, it is possible to store event record data that allows confirmation of the relevance of the behavior of the moving body to the event.

[Second embodiment]
The configuration of the recording apparatus according to the second embodiment of the present invention will be described with reference to FIG. FIG. 4 is a block diagram showing the configuration of a recording apparatus according to the second embodiment of the invention.

As shown in FIG. 4, the recording apparatus 1A according to the second embodiment of the present invention is different from the recording apparatus 1 shown in FIG. 1 in that it includes a first camera 10-1 and a second camera 10-2. different.

The first camera 10-1 is installed, for example, in the interior of the vehicle in which the recording device 1 is mounted, and photographs the surroundings of the vehicle. The first camera 10-1 is, for example, a camera that captures the front of the vehicle. The first camera 10-1 may be, for example, a combination of a camera that captures the front of the vehicle and a camera that captures the rear of the vehicle. The first camera 10-1 may be, for example, a combination of a camera that captures the front of the vehicle and a camera that captures the interior of the vehicle. The first camera 10-1 may be an omnidirectional camera that captures the surroundings of the vehicle. The first camera 10 - 1 outputs the photographed image data to the image data acquisition unit 120 .

The second camera 10-2 is composed of a camera for generating a bird's-eye view image. Specifically, the second camera 10-2 is implemented by a front bird's-eye video camera, a rear bird's-eye video camera, a left bird's-eye video camera, and a right bird's-eye video camera.

A second camera 10-2 photographs the surroundings of the vehicle. The second camera 10-2 captures, for example, a range with a radius of 3m to 5m centered on the vehicle. The second camera 10 - 2 outputs the photographed image data to the image data acquisition unit 120 .

The moving object detection unit 130 detects a moving object based on the image data acquired by the image data acquisition unit 120 from the second camera 10-2. That is, in the second embodiment, a moving object is detected within a radius of about 3 m to 5 m from the vehicle. The actual photographing range of the second camera 10-2 may be a range vertically wider than 3 to 5 m around the vehicle, which is used as a bird's-eye view image. In such a case, the moving object may be detected within a range of about 3m to 5m from the vehicle, which is in the vicinity of the vehicle, in the image captured by the second camera 10-2.

For example, when the moving object detection unit 130 detects a moving object from the data captured by the second camera 10-2, the event detection unit 131 detects the moving object regardless of the distance between the vehicle and the moving object or the moving speed of the moving object. The acceleration threshold for determining that an event has occurred may be lowered.

[Parking monitoring process]
A flow of parking monitoring processing according to the second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a flow chart showing an example of the flow of parking monitoring processing according to the second embodiment of the present invention.

The processes in steps S301, S304, S305, and S307 are the same as the processes in steps S101, S104, S105, and S107 shown in FIG.

After step S301, the control unit 100 acquires shooting data (step S302). Specifically, the photographed data obtaining unit 120 obtains photographed data obtained by photographing the surroundings of the vehicle from the second camera 10-2. Then, the process proceeds to step S303.

The control unit 100 determines whether or not the photographed data acquired from the second camera 10-2 contains a moving object (step S303). Specifically, the moving object detection unit 130 detects a moving object from the photographed data acquired by the photographed data acquisition unit 120, thereby determining whether or not the moving object is included. If it is determined that a moving object is included (Yes in step S303), the first camera 10-1 starts photographing, and the process proceeds to step S304. On the other hand, if it is determined that the moving object is not included (No in step S303), the process proceeds to step S307.

If it is determined as Yes in step S305, the control unit 100 stores the shooting data acquired from the first camera 10-1 as event recording data in the recording unit 20 (step S106). Specifically, the recording control unit 123 saves the captured data acquired from the first camera 10-1 that started capturing when the moving object acquired in step S302 was detected in the recording unit 20 as event recording data. do. Then, the process proceeds to step S307.

A flow of parking monitoring processing according to the second embodiment of the present invention will be described with reference to FIG. FIG. 6 is a flow chart showing an example of the flow of parking monitoring processing according to the second embodiment of the present invention.

In the process shown in FIG. 5, after a moving object is detected based on the photographed data acquired from the second camera 10-2, if an event occurs, the photographed data including the moving object acquired from the first camera 10-1 is detected. is saved as event record data. However, in the present embodiment, if an event occurs after a moving object is detected based on the captured data acquired from the second camera 10-2, the captured data containing the moving object acquired from the second camera 10-2 is captured. You may save as event record data.

The processing from step S401 to step S405 and step S407 are the same as the processing from step S301 to step S305 and step S307 shown in FIG. 5, respectively, so description thereof will be omitted.

If it is determined as Yes in step S405, the control unit 100 saves the shooting data acquired from the second camera 10-2 as event recording data in the recording unit 20 (step S406). Specifically, the recording control unit 123 saves the shooting data acquired from the second camera 10-2 in which the moving object was detected in step S402 in the recording unit 20 as event recording data. In this case, the recording control unit 123 may store only the photographed data in the direction in which the moving object was detected among the photographed data acquired from the second camera 10-2 in the recording unit 20 as the event record data.

In the process of FIG. 6, in the process of step S403, moving object detection is performed on the range near the vehicle captured by the second camera 10-2, and in the process of step S406, the entire range captured by the second camera 10-2 is detected. The shooting data of the angle of view may be stored as event recording data.

As described above, in the present embodiment, when it is determined that an event has occurred after a moving object is detected based on the image captured by the bird's-eye video camera that captures the surroundings of the vehicle, the captured data including the moving object is converted to the event recording data. can be saved as In other words, a bird's-eye view camera installed for the purpose of photographing the surroundings of the vehicle is used as a moving object sensor. As a result, the present embodiment can more appropriately detect moving objects around and near the vehicle.

Further, in the present embodiment, when it is determined that an event has occurred after detecting a moving object based on the image captured by the bird's-eye video camera that captures the surroundings of the vehicle, only the captured data in the direction in which the moving object was detected is captured. Can be saved as event record data. As a result, the present embodiment can more appropriately detect moving objects around and near the vehicle, and can suppress an increase in the volume of event record data.

Although the embodiments of the present invention have been described above, the present invention is not limited by the contents of these embodiments. In addition, the components described above include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those within the so-called equivalent range. Furthermore, the components described above can be combined as appropriate. Furthermore, various omissions, replacements, or modifications of components can be made without departing from the gist of the above-described embodiments.

1 recording device 10 camera 10-1 first camera 10-2 second camera 20 recording unit 30 CAN interface 40 operation unit 50 display unit 60 acceleration sensor 70 GPS receiving unit 100 control unit (recording control device)
110 bus 120 photographed data acquisition unit 121 buffer memory 122 photographed data processing unit 123 recording control unit 124 reproduction control unit 125 vehicle information acquisition unit 126 parking detection unit 127 operation control unit 128 display control unit 129 acceleration information acquisition unit 130 moving object detection unit 131 Event detection unit 132 Location information acquisition unit

Claims (7)

a photographed data acquisition unit that acquires photographed data taken by a camera that photographs the surroundings of the vehicle;
a parking detection unit that detects that the vehicle is parked;
an acceleration information acquisition unit that acquires acceleration information applied to the vehicle;
a moving object detection unit that detects a moving object from the photographed data acquired by the photographed data acquisition unit while the vehicle is parked;
an event detection unit that determines that an event has occurred when the acceleration information acquisition unit detects acceleration equal to or greater than a predetermined value within a first predetermined period after the moving object detection unit detects the moving object;
a recording control unit that, when the event detection unit determines that an event has occurred, saves photographed data as event recording data in a recording unit;
A recording control device. the event detection unit lowers an acceleration threshold for determining that an event has occurred for a second predetermined period after the moving object detection unit detects the moving object;
2. The recording control device according to claim 1. The event detection unit gradually lowers an acceleration threshold for determining that the event has occurred as the second predetermined period elapses.
3. The recording control device according to claim 2. When the event detection unit determines that an event has occurred, the recording control unit saves, as event recording data, photographed data of a period including at least the event detection point from when the moving object detection unit detects the moving object. ,
The recording control device according to any one of claims 1 to 3. The photographed data acquisition unit acquires photographed data from a camera that photographs a range around the vehicle and in the vicinity of the vehicle.
The recording control device according to any one of claims 1 to 3. a step of acquiring photographed data photographed by a camera photographing the surroundings of the vehicle;
detecting that the vehicle is parked;
obtaining acceleration information applied to the vehicle;
a moving object step of detecting a moving object from photographed data acquired while the vehicle is parked;
a step of determining that an event has occurred when an acceleration equal to or greater than a predetermined value is detected within a first predetermined time after detecting the moving object;
a step of storing photographed data as event recording data in a recording unit when it is determined that an event has occurred;
A recording control method, comprising: a step of acquiring photographed data photographed by a camera photographing the surroundings of the vehicle;
detecting that the vehicle is parked;
obtaining acceleration information applied to the vehicle;
a moving object step of detecting a moving object from photographed data acquired while the vehicle is parked;
a step of determining that an event has occurred when an acceleration equal to or greater than a predetermined value is detected within a first predetermined time after detecting the moving body;
a step of storing photographed data as event recording data in a recording unit when it is determined that an event has occurred;
A program for executing a computer that operates as a recording control device.

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