WO2019225053A1

WO2019225053A1 - Recording control device, recording control method, and program

Info

Publication number: WO2019225053A1
Application number: PCT/JP2019/001332
Authority: WO
Inventors: 誠竹澤
Original assignee: 株式会社Ｊｖｃケンウッド
Priority date: 2018-05-25
Filing date: 2019-01-17
Publication date: 2019-11-28
Also published as: JP2019204395A

Abstract

In the present invention, a video acquisition unit (102) acquires a video from an imaging device for photographing the surroundings of a vehicle (1). An other-vehicle detection unit (106) detects an other vehicle different from the vehicle (1) and detects the state of the detected other vehicle. A traffic regulation acquisition unit (108) acquires traffic regulation information corresponding to traffic regulations that the other vehicle detected by the other-vehicle detection unit (106) should follow. A dangerous behavior detection unit (110) uses the traffic regulation information acquired by the traffic regulation acquisition unit (108) to determine whether the state of the other vehicle detected by the other-vehicle detection unit (106) constitutes dangerous behavior. A recording control unit (120) saves event recording data consisting of video including the point in time when the dangerous behavior detection unit (110) detected the dangerous behavior of the other vehicle.

Description

Recording control apparatus, recording control method, and program

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

Recording devices such as drive recorders that are mounted on vehicles and shoot around the vehicle have been developed. The cause of the accident can be verified by the video recorded in the recording device. In such a technique, when the recording capacity is insufficient, newer imaged image data is always left in the recording unit by sequentially overwriting and deleting the imaged image data recorded in the recording apparatus from the oldest imaged date and time. So that recording is done.

In connection with this technology, Patent Document 1 discloses an image recording apparatus capable of more accurately recording captured image data having high utility. In the image recording apparatus according to Patent Document 1, after the acceleration of the moving body on which the image recording apparatus is mounted reaches a threshold value, the distance between the moving body and an object such as a forward vehicle is not sufficient. Judge that the relationship between the moving object and the object was dangerous. In this case, the image recording apparatus according to Patent Document 1 records captured image data so as to prohibit overwriting and deleting.

JP 2017-045396 A

In the technique according to Patent Document 1, captured image data is recorded so that overwriting deletion is prohibited, triggered by a state in which the acceleration of the moving body on which the image recording apparatus is mounted changes and the moving body becomes dangerous. . However, even if the moving body itself is not in a dangerous state as described above, an accident may occur due to an action of another vehicle different from the moving body on which the image recording apparatus is mounted. In such a case, the technique according to Patent Document 1 may not be able to appropriately record the actions of other vehicles that may be the cause of this accident. Therefore, even if the technique according to the cited document 1 is used, the cause of the accident may not be easily verified.

In view of the above problems, an object of the present embodiment is to provide a recording control device, a recording control method, and a program that can appropriately record an action of another vehicle that is highly likely to be an accident factor. .

Therefore, in the present embodiment, an image acquisition unit that acquires an image from an imaging device that captures the surroundings of the vehicle, an other vehicle that is different from the vehicle, and detects the state of the detected other vehicle The state of the other vehicle detected by the detection unit, the traffic regulation acquisition unit for acquiring the traffic regulation information corresponding to the traffic regulation to be followed by the other vehicle detected by the other vehicle detection unit, and the other vehicle detection unit, A video including a dangerous behavior detection unit that determines whether or not it is a dangerous behavior based on the traffic regulation information acquired by the traffic regulation acquisition unit, and a time point when the dangerous behavior detection unit detects the dangerous behavior of the other vehicle. And a recording control unit that stores the recording as event recording data.

Further, the present embodiment acquires an image from an imaging device that captures the surroundings of the vehicle, detects another vehicle different from the vehicle, detects a state of the detected other vehicle, and detects the detected other The traffic regulation information corresponding to the traffic regulation to be followed by the vehicle is acquired, and it is determined whether the detected state of the other vehicle is a dangerous act based on the acquired traffic regulation information, and the other vehicle Provided is a recording control method for storing a video including a point in time when a dangerous act is detected as event recording data.

Further, the present embodiment includes a step of acquiring an image from an imaging device that captures the surroundings of the vehicle, a step of detecting another vehicle different from the vehicle, and a state of detecting the detected other vehicle, A step of acquiring traffic regulation information corresponding to the traffic regulation to be detected by the other vehicle, and whether or not the state of the detected other vehicle is a dangerous act based on the acquired traffic regulation information. There is provided a program for causing a computer to execute a step of determining and a step of storing, as event record data, an image including a point in time when a dangerous action of the other vehicle is detected.

According to this embodiment, it is possible to provide a recording control device, a recording control method, and a program that can appropriately record an action of another vehicle that is highly likely to be an accident factor.

1 is a diagram illustrating a vehicle according to a first embodiment; 1 is a diagram illustrating a configuration of a recording control apparatus according to a first embodiment and a recording apparatus including the recording control apparatus. It is a figure for demonstrating the method to detect the travel speed of another vehicle from the image | video acquired by the image | video acquisition part concerning Embodiment 1. FIG. 3 is a flowchart illustrating a recording control method performed by the recording control apparatus according to the first embodiment. It is a figure for demonstrating the process of FIG. 5 is a flowchart showing a first specific example of the process of S10 shown in FIG. 5 is a flowchart showing a second specific example of the process of S10 shown in FIG. 6 is a flowchart showing a third specific example of the process of S10 shown in FIG. It is a flowchart which shows the 4th specific example of the process of S10 shown in FIG. It is a flowchart which shows the 5th specific example of the process of S10 shown in FIG. FIG. 4 is a diagram illustrating a configuration of a recording control apparatus according to a second embodiment and a recording apparatus having the recording control apparatus. 10 is a flowchart illustrating a recording control method performed by the recording control apparatus according to the second embodiment. It is a figure for demonstrating the process of FIG. FIG. 6 is a diagram illustrating a configuration of a recording control apparatus according to a third embodiment and a recording apparatus having the recording control apparatus. 10 is a flowchart illustrating a recording control method performed by a recording control apparatus according to a third embodiment. It is a figure for demonstrating the process of FIG.

(Embodiment 1)
Embodiments of the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the substantially same component.

FIG. 1 is a diagram illustrating a recording control device or a vehicle 1 including a recording device according to the first embodiment. FIG. 1 shows an example having one or more imaging devices 2, one or more ambient sensors 4, and a recording control device 100. The imaging device 2 is a camera, for example. The imaging device 2 captures the surroundings of the vehicle 1 and generates video data indicating the captured video. The imaging device 2 images the front of the vehicle 1 including the road surface 90. Further, the imaging device 2 may photograph the rear and left and right of the vehicle 1. A plurality of imaging devices 2 may be installed on the front, rear, left and right of the vehicle 1. Further, one imaging device 2 may capture all directions of the vehicle 1. The “around the vehicle 1” may include not only the exterior of the vehicle 1 but also the interior of the vehicle 1.

The surrounding sensor 4 detects the surrounding state of the vehicle 1 and generates data indicating the detected state. A plurality of surrounding sensors 4 can be installed on the front, rear, left and right of the vehicle 1. The ambient sensor 4 is, for example, a proximity sensor, an ultrasonic sensor, a three-dimensional sensor, or the like. The ambient sensor 4 that is a three-dimensional sensor may be, for example, a depth sensor, a distance sensor, a three-dimensional camera, or the like. Further, the ambient sensor 4 that is a three-dimensional sensor may be, for example, a lidar (LIDAR; Light Detection and Ranging). When the surrounding sensor 4 is a three-dimensional sensor, the surrounding sensor 4 can detect the distance from the vehicle 1 to the other vehicle and the relative position of the other vehicle with respect to the vehicle 1.

The recording control device 100 can be installed at an arbitrary position of the vehicle 1. The recording control apparatus 100 can be connected to a CAN (Control Area Network) included in the vehicle 1. The recording control device 100 performs control for recording video data indicating a video shot by the imaging device 2. Details will be described later. Hereinafter, the term “video” also means “video data indicating video” as a processing target in information processing. Similarly, hereinafter, the term “image” also means “image data indicating an image” as a processing target in information processing. The term “voice” also means “voice data indicating voice” as a processing target in information processing.

FIG. 2 is a diagram illustrating the configuration of the recording control apparatus 100 according to the first embodiment and the recording apparatus 50 including the recording control apparatus 100. The recording device 50 includes an imaging device 2, a sound collection device 3, an ambient sensor 4, a speed sensor 5, a recording unit 10, a display unit 22, a speaker 24, and a recording control device 100. The recording control device 100 is communicably connected to the imaging device 2, the sound collecting device 3, the ambient sensor 4, the speed sensor 5, the recording unit 10, the display unit 22, and the speaker 24 via, for example, CAN. The recording unit 10 includes a normal recording unit 12 and an event recording unit 14. The recording control device 100 according to the present invention can be restated as the recording device 50 including any one of the imaging device 2, the sound collecting device 3, the recording unit 10, the display unit 22, and the speaker 24.

The recording control device 100 includes a video acquisition unit 102, a buffer memory 104, another vehicle detection unit 106, a traffic regulation acquisition unit 108, a dangerous act detection unit 110, a recording control unit 120, and a reproduction control unit 130. Have. Note that at least one component or all components of the recording device 50 may be incorporated in the vehicle 1 or may be incorporated in another device that can be used in the vehicle 1. The same applies to other embodiments described later.

The recording control device 100 can be connected to a navigation device that supports traveling of the vehicle 1 by wire or wirelessly. The navigation device may be mounted inside the vehicle 1 or may be mounted on another device that can be used in the vehicle 1. The navigation device may be an application installed on a mobile terminal or the like. The navigation device provides the current position of the vehicle 1 and map information to the passenger of the vehicle 1. The map information includes traffic regulation information indicating traffic regulations to be followed by vehicles traveling on the road. The traffic regulation information includes, for example, speed limit information indicating a speed limit of a vehicle, temporary stop information indicating a portion to be temporarily stopped, overtaking prohibition information indicating an overtaking prohibition section, and parking / stopping indicating a parking prohibition section. And prohibition information. Here, “limit speed” includes “statutory maximum speed” and “designated maximum speed” in traffic regulations. “Overtaking” is a concept that includes not only “overtaking” in traffic regulations but also “overtaking”. Further, the recording control apparatus 100 may acquire traffic signal information regarding the traffic signal from the traffic signal in the vicinity of the vehicle 1. The traffic signal information may indicate the current lighting color for each traffic road. The traffic regulation information may also include traffic signal information.

The sound collection device 3 is, for example, a microphone. The sound collection device 3 collects sound around the vehicle 1 and generates sound data. The speed sensor 5 detects the traveling speed of the vehicle 1 and generates speed data indicating the traveling speed.

The recording unit 10 may be incorporated in the recording control apparatus 100, or may be an apparatus physically separate from the recording control apparatus 100. The recording unit 10 may be a mobile terminal such as a smartphone, or may be an external server. The recording unit 10 records the video imaged by the imaging device 2 under the control of the recording control device 100. The recording unit 10 may record the sound collected by the sound collection device 3. The normal recording unit 12 records the video so that it can be overwritten. That is, when the storage capacity is insufficient, the normal recording unit 12 can delete videos, for example, in order from the oldest video, and as a result, can store a new video in a free storage area. The event recording unit 14 records video as event recording data. Event record data is data for which overwriting is prohibited. That is, the event record data is not deleted even if the time has elapsed unless the user intentionally performs a deletion operation or the like. The normal recording unit 12 may be provided in the vehicle 1, and the event recording unit 14 may be provided in a device different from the vehicle 1, such as a mobile terminal or an external server. Note that setting a flag indicating that video can be overwritten may record the video in the normal recording unit 12. In addition, setting a flag indicating prohibition of overwriting on the video may record the video in the event recording unit 14.

The display unit 22 and the speaker 24 are provided, for example, in the vehicle 1. Under the control of the recording control apparatus 100, the display unit 22 displays a video that is being recorded or a video that is instructed to be played back by the recording unit 10 and that is being played back by the playback control unit 130. The speaker 24 outputs the sound collected by the sound collecting device 3 or the reproduced sound under the control of the recording control device 100. The display unit 22 may display a navigation screen. The speaker 24 may output a navigation message. The display unit 22 and the speaker 24 may be configured by a device physically separate from the vehicle 1, for example, a mobile terminal.

The recording control device 100 includes a processor such as a CPU (Central Processing Unit), a storage device such as a memory, a user interface, and various peripheral circuits. That is, the recording control apparatus 100 has a function as a computer. In addition, the recording control device 100 executes a program stored in the storage device by a processor, whereby the video acquisition unit 102, the other vehicle detection unit 106, the traffic regulation acquisition unit 108, the dangerous behavior detection unit 110, and the recording control unit 120. Each component such as may be realized. Further, each component of the recording control apparatus 100 is not limited to being realized by software by a program, and may be realized by any combination of hardware, firmware, and software. Each component of the recording control apparatus 100 may be realized by using an integrated circuit that can be programmed by the user, such as an FPGA (field-programmable gate array) or a microcomputer. In this case, this integrated circuit may be used to realize a program composed of the above-described components. The same applies to other embodiments described later.

The video acquisition unit 102 acquires a video shot by the imaging device 2 from the imaging device 2. The video acquisition unit 102 acquires the sound collected by the sound collection device 3 from the sound collection device 3. Here, data including video and audio may be referred to as shooting data. That is, the video acquisition unit 102 can acquire shooting data. The video acquisition unit 102 outputs captured data including the acquired video and audio to the buffer memory 104.

The buffer memory 104 temporarily stores the shooting data output from the video acquisition unit 102. Temporarily storing may be, for example, erasing image data whose buffer memory 104 has passed a preset period. Alternatively, temporarily storing may mean storing the data output from the video acquisition unit 102 by overwriting the data in the buffer memory 104. Alternatively, the temporary storage may be to erase the output shooting data when the buffer memory 104 outputs the shooting data output from the video acquisition unit 102 to the recording control unit 120. In the present embodiment, the buffer memory 104 may be omitted.

The other vehicle detection unit 106 detects another vehicle different from the vehicle 1. Specifically, the other vehicle detection unit 106 detects the other vehicle using data acquired from at least one of the video acquisition unit 102 and the surrounding sensor 4. For example, the other vehicle detection unit 106 performs image recognition processing on the video acquired by the video acquisition unit 102 and detects the other vehicle. Or the other vehicle detection part 106 may detect an other vehicle from the data acquired by the surrounding sensor 4 which is a three-dimensional sensor.

Furthermore, the other vehicle detection unit 106 detects the state of the detected other vehicle. Specifically, the state of the other vehicle is detected using data acquired from at least one of the video acquisition unit 102, the ambient sensor 4, and the speed sensor 5. The “state of other vehicle” may include, for example, the traveling speed of the other vehicle, the movement transition of the other vehicle, and the stop state of the other vehicle. Other vehicle detection unit 106 outputs other vehicle state data indicating the detected state of the other vehicle to dangerous action detection unit 110.

Other vehicle detection unit 106 detects the traveling speed of the detected other vehicle. For example, the other vehicle detection unit 106 detects the position of the other vehicle at the time t1 and the time t2 (relative position with respect to the vehicle 1) from the surrounding sensor 4 that is a rider. The other vehicle detection unit 106 calculates the distance traveled by the other vehicle from time t1 to time t2 from the difference between the positions of the other vehicles at time t1 and time t2. Then, the other vehicle detection unit 106 calculates the relative speed of the other vehicle with respect to the vehicle 1 from the difference between the time t1 and the time t2 and the moving distance of the other vehicle. Further, the other vehicle detection unit 106 calculates the traveling speed of the other vehicle from the traveling speed of the vehicle 1 detected by the speed sensor 5. The other vehicle detection unit 106 may detect the traveling speed of the other vehicle from the video acquired by the video acquisition unit 102 as described below.

FIG. 3 is a diagram for explaining a method of detecting the traveling speed of the other vehicle from the video acquired by the video acquisition unit 102 according to the first embodiment. In the video Im, an other vehicle image 81I and an other vehicle image 82I that are images of other vehicles, and a road surface image 90I that is an image of the road surface 90 are drawn. In the image Im, the other vehicle image 81I moves in the left direction, that is, in the negative direction of the X axis, and the other vehicle image 82I moves in the right direction, that is, in the positive direction of the X axis. The other vehicle image 81I is an image of another vehicle that is closer to the vehicle 1 than the other vehicle image 82I. That is, FIG. 3 shows a case where another vehicle is traveling in a lane that intersects the lane in which the vehicle 1 travels at an intersection or the like.

The other vehicle detection unit 106 recognizes the other vehicle image 81I and the other vehicle image 82I from the video Im. And the other vehicle detection part 106 recognizes the lower end position Y1 of the other vehicle image 81I in the Y-axis direction in the video Im. Here, the position in the Y-axis direction with respect to the lower end position Y0 of the image Im, that is, the number of pixels from the lower end position Y0 of the image Im generally corresponds to the distance from the vehicle 1. The lower end position corresponds to the ground contact position of the other vehicle. Therefore, the other vehicle detection unit 106 can detect the distance D1 to the other vehicle represented by the other vehicle image 81I.

Further, in the image Im, the number of pixels in the X-axis direction at the position Y1 substantially corresponds to the distance in the horizontal direction (X-axis direction) at the distance D1 from the vehicle 1. Therefore, the other vehicle detection unit 106 detects how many pixels the edge in the X-axis direction of the other vehicle image 81I has moved in the video image Im so that the other vehicle image 81I is represented by the other vehicle image 81I. The relative movement distance with respect to the vehicle 1 can be calculated. And the other vehicle detection part 106 can calculate the relative speed of the other vehicle represented by the other vehicle image 81I from the relative movement distance and the movement time, and can calculate the traveling speed of this other vehicle. Similarly, the other vehicle detection unit 106 can detect the distance D2 and the traveling speed to the other vehicle represented by the other vehicle image 82I.

In addition, in a road having a plurality of lanes, when another vehicle is traveling in the lane adjacent to the lane in which the vehicle 1 travels and the other vehicle passes by the side of the vehicle 1, an imaging device that captures the side of the vehicle 1 The traveling speed of the other vehicle may be detected using the image of 2. In this case, since the interval between the lanes is substantially constant, the interval between the vehicle 1 and the other vehicle may be assumed to be about 5 m, for example. By doing in this way, the process which calculates the distance from an image | video to another vehicle becomes unnecessary.

Further, the other vehicle detection unit 106 detects the movement transition of the other vehicle. Specifically, the other vehicle detection unit 106 performs image recognition processing to recognize how the detected image of the other vehicle has moved in the video acquired by the video acquisition unit 102. At this time, the other vehicle detection unit 106 can detect whether or not the other vehicle overtakes another vehicle in the video. Moreover, the other vehicle detection part 106 can recognize the lane boundary line on a road in an image | video, and can recognize whether the other vehicle straddled the lane boundary line. The other vehicle detection unit 106 may detect whether another vehicle has passed the vehicle 1 or not.

Further, the other vehicle detection unit 106 detects the stop state of the other vehicle. Specifically, the other vehicle detection unit 106 performs image analysis on the video acquired by the video acquisition unit 102, and whether or not the detected image of the other vehicle is moving with respect to the road surface image. Is detected. And the other vehicle detection part 106 judges that the other vehicle has stopped when the image of another vehicle is not moving with respect to a road surface image.

The traffic regulation acquisition unit 108 acquires traffic regulation information corresponding to the traffic regulation that the other vehicle detected by the other vehicle detection unit 106 should follow. That is, the traffic regulation acquisition unit 108 acquires the traffic regulation information corresponding to the road on which the other vehicle travels detected by the other vehicle detection unit 106. For example, the traffic regulation acquisition unit 108 may acquire traffic regulation information from the navigation device. Further, for example, the traffic regulation acquisition unit 108 may acquire traffic signal information, which is traffic regulation information, by receiving a TSPS (Traffic Signal Prediction Systems) optical beacon from a traffic light. Furthermore, the traffic regulation acquisition unit 108 may acquire the traffic regulation information by acquiring the video acquired by the video acquisition unit 102 and recognizing a traffic sign or the like from the video. The traffic regulation acquisition unit 108 outputs the acquired traffic regulation information to the dangerous behavior detection unit 110.

Dangerous behavior detection unit 110 detects dangerous behavior of other vehicles. Specifically, the dangerous behavior detection unit 110 determines whether the state of the other vehicle detected by the other vehicle detection unit 106 is a dangerous behavior based on the traffic regulation information acquired by the traffic regulation acquisition unit 108. to decide. For example, the dangerous behavior detection unit 110 detects at least one of an overspeed of another vehicle, signal ignorance, a suspension violation, an overtaking prohibition violation, and a parking stop prohibition violation by a method described later. When the dangerous action detecting unit 110 detects a dangerous action of another vehicle, the dangerous action detecting unit 110 outputs an event recording instruction signal instructing to store the video as event record data to the recording control unit 120. Note that the event recording instruction signal may include the time when the dangerous action detecting unit 110 detects the dangerous action, that is, the time when the dangerous action occurs.

The recording control unit 120 performs control so that the shooting data stored in the buffer memory 104 is recorded in the recording unit 10. The recording control unit 120 may record the shooting data in a file format for each predetermined period. The recording control unit 120 records shooting data in the recording unit 10 in accordance with the presence / absence of an event recording instruction signal.

Specifically, the recording control unit 120 continues to record the shooting data in the normal recording unit 12 when the event recording instruction signal is not output from the dangerous behavior detection unit 110. That is, the recording control unit 120 records the video acquired by the video acquisition unit 102 in an overwritable manner in the normal recording unit 12 when the event recording instruction signal is not output from the dangerous act detection unit 110. Continuing to record video in such a manner that it can be overwritten is called loop recording or normal recording.

On the other hand, the recording control unit 120 records the video in the event recording unit 14 when the event recording instruction signal is output from the dangerous act detection unit 110. That is, the recording control unit 120 stores, as event record data, an image including a point in time when the dangerous action detection unit 110 detects a dangerous action of another vehicle when the event recording instruction signal is output from the dangerous action detection unit 110. To do. Details will be described later. Note that storing video as event recording data is referred to as event recording. Further, the recording control unit 120 may store an image in the event recording unit 14 when the recording control device 100 detects an event such as the occurrence of acceleration corresponding to the collision of the vehicle 1. The normal recording unit 12 may record a video corresponding to the event recording data even when the event recording data is recorded.

The reproduction control unit 130 acquires the recording data recorded in the recording unit 10 by, for example, a user operation, and performs a process for reproducing the recording data. Then, the reproduction control unit 130 outputs the video of the recording data to the display unit 22 and outputs the audio of the recording data to the speaker 24.

FIG. 4 is a flowchart illustrating a recording control method performed by the recording control apparatus 100 according to the first embodiment. First, the recording control unit 120 of the recording control apparatus 100 starts normal recording (step S102). Normal recording is started when the vehicle 1 is turned on or powered on. That is, the recording control unit 120 continues to record the video acquired by the video acquisition unit 102 in the normal recording unit 12 while the vehicle 1 is operating.

Then, the recording control apparatus 100 determines whether or not a dangerous act of another vehicle has been detected (step S10). Specifically, the other vehicle detection unit 106 detects the other vehicle and detects the state of the detected other vehicle. The traffic regulation acquisition unit 108 acquires traffic regulation information corresponding to the traffic regulation that the other vehicle detected by the other vehicle detection unit 106 should follow. Then, the dangerous behavior detection unit 110 determines whether or not the state of the other vehicle detected by the other vehicle detection unit 106 is a dangerous behavior based on the traffic regulation information acquired by the traffic regulation acquisition unit 108. Details will be described later.

When the dangerous action is detected (YES in S10), the recording control unit 120 stores the video before and after the dangerous action is detected as event record data in the event recording unit 14 (step S104). Details will be described later. On the other hand, when the dangerous action is not detected (NO in S10), the process of S104 is not performed, and the process proceeds to S106. Then, the recording control apparatus 100 determines whether or not an operation for ending normal recording has been performed (step S106). If the normal recording is not terminated (NO in S106), the process returns to S10. On the other hand, when the operation for ending the normal recording is performed (YES in S106), the recording control apparatus 100 ends the normal recording. The normal recording can be ended when the engine of the vehicle 1 is turned off or the power is turned off.

As described above, when the dangerous action of another vehicle is detected, the recording control apparatus 100 according to the first embodiment uses the video including the point in time when the dangerous action is detected as event recording data for which overwriting is prohibited. Configured to save. In general, dangerous behavior is likely to cause an accident. In other words, dangerous behavior can cause accidents. And the recording control apparatus 100 concerning Embodiment 1 can preserve | save the dangerous action of other vehicles irrespective of whether the vehicle 1 with which the recording apparatus 50 was mounted, ie, the own vehicle, was in a dangerous state. Therefore, the recording control apparatus 100 according to the first embodiment can appropriately record an action of another vehicle that is highly likely to be an accident factor. When an accident by another vehicle, that is, a third party occurs, it is possible to appropriately verify the cause of the accident by the third party using the event record data in which the dangerous action of the other vehicle is photographed.

FIG. 5 is a diagram for explaining the processing of FIG. While the recording control unit 120 is performing normal recording, that is, loop recording, the dangerous behavior detection unit 110 detects the dangerous behavior at time td. At this time, the recording control unit 120 stores, as event recording data, an image of a period in which a predetermined period Ta1 has elapsed from the time td when the dangerous act is detected. Similarly, the recording control unit 120 stores, as event recording data, a video of a period that is back by a predetermined period Tb1 from the time td when the dangerous act is detected. Therefore, in this case, assuming that the time before the period Tb1 from the time td is teB and the time after the period Ta1 from the time td is teA, the recording control unit 120 records the video of the period from the time teB to the time teA as event recording. Save as data.

Note that the period Ta1 and the period Tb1 are, for example, several tens of seconds, and can be preferably set to 30 to 60 seconds. Moreover, Ta1 = Tb1 may be sufficient. Furthermore, the period Ta1 may be different depending on the type of dangerous action described later. For example, the period Ta1 when the dangerous action exceeds the speed may be set longer than the period Ta1 when the dangerous action ignores the signal. The same applies to the period Tb1.

As described above, the recording control apparatus 100 according to the first embodiment is configured to store the video of the period before and after the dangerous action is detected as the event recording data. Therefore, the recording control apparatus 100 according to the first embodiment can more appropriately record an action of another vehicle that is highly likely to be an accident factor. In other words, by appropriately setting the period Ta1 and the period Tb1, it is possible to provide an image having an appropriate length for verifying the cause of the accident. For example, if the lengths of the period Ta1 and the period Tb1 are too short, there is a possibility that an image that captures the action of another vehicle that directly caused the accident may not be stored as event record data. On the other hand, in the first embodiment, a video that captures the action of another vehicle that directly caused the accident can be stored as event record data.

FIG. 6 is a flowchart showing a first specific example of the process of S10 shown in FIG. FIG. 6 shows an example where the dangerous action is overspeed. The other vehicle detection unit 106 detects the other vehicle by the above-described method or the like, and detects the detected traveling speed V1 of the other vehicle (step S112). In the example of FIG. 6, the traveling speed of the other vehicle corresponds to the state of the other vehicle. Further, the traffic regulation acquisition unit 108 acquires speed limit information on the road on which the other vehicle is detected, which is detected by the other vehicle detection unit 106 (step S114). In the example of FIG. 6, the speed limit information corresponds to traffic regulation information. Here, it is assumed that the speed limit information indicates a speed limit VL. For example, the traffic regulation acquisition unit 108 can acquire speed limit information from the navigation device. Further, for example, the traffic regulation acquisition unit 108 can acquire the speed limit information by recognizing a traffic sign indicating the speed limit from the video acquired by the video acquisition unit 102. The speed limit information is not necessarily related to the lane in which the vehicle 1 is traveling. When another vehicle is traveling in a lane that intersects the lane in which the vehicle 1 is traveling at an intersection or the like, the traffic regulation acquisition unit 108 determines from the navigation device the speed limit related to the lane in which the other vehicle is traveling. Information can be obtained.

The dangerous behavior detection unit 110 determines whether or not the traveling speed V1 of the other vehicle exceeds the speed limit VL by a predetermined speed Vth1 or more (step S116). In other words, the dangerous behavior detection unit 110 determines whether or not V1> VL + Vth1. That is, the dangerous action detection unit 110 determines the dangerous action of the other vehicle based on the speed limit information and the traveling speed of the other vehicle. Here, Vth1 may differ depending on the speed limit VL, or may be a constant value. For example, when the speed limit VL is 40 km / h, Vth1 may be 20 km / h. That is, the predetermined speed Vth1 can be appropriately set according to the speed at which the traveling speed of the other vehicle is regarded as dangerous in road traffic. If V1> VL + Vth1 is satisfied (YES in S116), the dangerous action detection unit 110 detects the dangerous action of the other vehicle that is overspeed (step S118). In other words, the dangerous action detection unit 110 detects an excessive excess that is likely to be directly linked to an accident among excesses of the speed limit VL as a dangerous action.

Thereby, the recording control apparatus 100 according to the first embodiment can detect a dangerous action of another vehicle such as an excessive speed that has caused an accident. Therefore, the recording control apparatus 100 according to the first embodiment can appropriately store, as event record data, a video that captures an overspeeding action of another vehicle that has caused the accident.

FIG. 7 is a flowchart showing a second specific example of the process of S10 shown in FIG. FIG. 7 shows an example in which the dangerous action is signal ignorance. The other vehicle detection unit 106 detects the other vehicle by the above-described method or the like, and detects the detected traveling speed V1 of the other vehicle (step S122). In the example of FIG. 7, the traveling speed of the other vehicle corresponds to the state of the other vehicle.

Further, the traffic regulation acquisition unit 108 acquires traffic signal information on the road on which the other vehicle detected by the other vehicle detection unit 106 is traveling (step S124). In the example of FIG. 7, traffic signal information corresponds to traffic regulation information. For example, the traffic regulation acquisition unit 108 can acquire traffic signal information from nearby traffic signals. Further, for example, the traffic regulation acquisition unit 108 can recognize the lighting color of the traffic light from the video acquired by the video acquisition unit 102. The traffic signal information is not necessarily related to traffic signals that restrict traffic in the lane in which the vehicle 1 is traveling. When another vehicle is traveling in a lane that intersects the lane in which the vehicle 1 is traveling at an intersection or the like, the traffic regulation acquisition unit 108 uses a traffic light that regulates traffic in the lane in which the other vehicle is traveling. Signal information can be obtained.

The dangerous behavior detection unit 110 determines whether or not the traffic signal information of the traffic signal to be followed by the other vehicle indicates a “red signal” and the traveling speed V1 of the other vehicle exceeds the predetermined speed Vth2 (step S126). . That is, the dangerous behavior detection unit 110 determines the dangerous behavior of the other vehicle based on the traffic signal information and the traveling speed of the other vehicle. Here, it may be Vth2 = 0 km / h. When V1> Vth2 is satisfied (YES in S126), the dangerous behavior detection unit 110 detects the dangerous behavior of the other vehicle that is ignoring the signal (step S128). The dangerous behavior detection unit 110 may determine whether or not the traveling speed V1 of the other vehicle exceeds the predetermined speed Vth2 when the other vehicle is within a predetermined range. The predetermined range is a range in the traveling direction of the other vehicle from the stop position by the traffic light that the other vehicle should follow. In other words, when the traffic light that the other vehicle should follow is a red signal, the dangerous behavior detection unit 110 clearly detects that the other vehicle continues to travel beyond the stop position.

Thereby, the recording control apparatus 100 according to the first embodiment can detect the dangerous action of other vehicles such as ignoring the signal that caused the accident. Therefore, the recording control apparatus 100 according to the first embodiment can appropriately store the video obtained by photographing the signal ignoring behavior of the other vehicle that has caused the accident as event recording data.

FIG. 8 is a flowchart showing a third specific example of the process of S10 shown in FIG. FIG. 8 shows an example where the dangerous act is a violation of suspension. The other vehicle detection unit 106 detects the other vehicle by the above-described method or the like, and detects the detected traveling speed V1 of the other vehicle (step S132). In the example of FIG. 8, the traveling speed of the other vehicle corresponds to the state of the other vehicle.

Further, the traffic regulation acquisition unit 108 acquires the temporary stop information of the road on which the other vehicle is detected, which is detected by the other vehicle detection unit 106 (step S134). In the example of FIG. 8, the temporary stop information corresponds to the traffic regulation information. For example, the traffic regulation acquisition unit 108 can acquire temporary stop information from the navigation device. Further, for example, the traffic regulation acquisition unit 108 can acquire temporary stop information by recognizing a traffic sign indicating a temporary stop from the video acquired by the video acquisition unit 102. The temporary stop information is not necessarily related to the lane in which the vehicle 1 is traveling. When another vehicle is traveling in a lane that intersects the lane in which the vehicle 1 is traveling, the traffic regulation acquisition unit 108 acquires, from the navigation device, temporary stop information regarding the lane in which the other vehicle is traveling. obtain.

The dangerous action detection unit 110 indicates that the position where the other vehicle is traveling is a temporary stop position, and whether or not the traveling speed V1 of the other vehicle exceeds the predetermined speed Vth3. Judgment is made (step S136). That is, the dangerous action detection unit 110 determines the dangerous action of the other vehicle based on the temporary stop information and the traveling speed of the other vehicle. Here, Vth3 = 10 km / h may be sufficient. That is, the predetermined speed Vth3 can be appropriately set according to the speed at which the traveling speed of the other vehicle at the temporary stop point is considered dangerous in traffic. When V1> Vth3 is satisfied (YES in S136), the dangerous action detection unit 110 detects a dangerous action of another vehicle, which is a violation of temporary stop (step S138). In other words, the dangerous behavior detection unit 110 detects, as a dangerous behavior, a case of passing through a temporary stop location that is directly related to an accident and is not clearly confirmed around the suspension among the suspension violations.

Thereby, the recording control apparatus 100 according to the first embodiment can detect a dangerous act of another vehicle, which is a violation of temporary stop that has caused the accident. Therefore, the recording control apparatus 100 according to the first embodiment can appropriately store the video obtained by photographing the suspension violation action of another vehicle that has caused the accident as event record data.

The second specific example shown in FIG. 7 and the third specific example shown in FIG. 8 can be applied to other designated places such as railroad crossings. Information indicating the traffic regulations regarding these various stops acquired by the traffic law acquiring unit 108 may be referred to as stop duty information.

FIG. 9 is a flowchart showing a fourth specific example of the process of S10 shown in FIG. FIG. 9 shows an example where the dangerous act is an overtaking prohibition violation. The other vehicle detection unit 106 detects the other vehicle by the above-described method or the like, and detects the movement transition of the detected other vehicle (step S142). In the example of FIG. 9, the movement transition of the other vehicle corresponds to the state of the other vehicle. Specifically, the other vehicle detection unit 106 detects whether or not the other vehicle has performed an overtaking action.

Further, the traffic regulation acquisition unit 108 acquires the overtaking prohibition information on the road on which the other vehicle is detected, which is detected by the other vehicle detection unit 106 (step S144). In the example of FIG. 9, the overtaking prohibition information corresponds to traffic regulation information. For example, the traffic regulation acquisition unit 108 can acquire the overtaking prohibition information from the navigation device. Further, for example, the traffic regulation acquisition unit 108 can acquire the overtaking prohibition information by recognizing a traffic sign or a lane boundary indicating the overtaking prohibition from the video acquired by the video acquisition unit 102.

The dangerous action detection unit 110 indicates that the overtaking prohibition information indicates that the location where the other vehicle is traveling is an overtaking prohibited section, and determines whether or not the other vehicle has performed the overtaking action (step) S146). That is, the dangerous action detection unit 110 determines the dangerous action of the other vehicle based on the overtaking prohibition information and the movement transition of the other vehicle. If the location where the other vehicle is traveling is an overtaking prohibition section and the other vehicle has performed an overtaking action (YES in S146), the dangerous behavior detection unit 110 determines that the other vehicle is in violation of overtaking prohibition. Is detected (step S148).

Thereby, the recording control apparatus 100 according to the first embodiment can detect a dangerous act of another vehicle such as a violation of overtaking prohibition that has caused an accident. Therefore, the recording control apparatus 100 according to the first embodiment can appropriately store an image obtained by capturing an overtaking prohibition act of another vehicle that has caused an accident as event record data.

FIG. 10 is a flowchart showing a fifth specific example of the process of S10 shown in FIG. FIG. 10 shows an example when the dangerous act is a violation of parking and parking prohibition. The other vehicle detection unit 106 detects the other vehicle by the above-described method or the like, and detects the stopped state of the detected other vehicle (step S152). In the example of FIG. 10, the stop state of the other vehicle corresponds to the state of the other vehicle.

Also, the traffic regulation acquisition unit 108 acquires parking / parking prohibition information on the road on which the other vehicle detected by the other vehicle detection unit 106 is located (step S154). In the example of FIG. 10, parking / stopping prohibition information corresponds to traffic regulation information. For example, the traffic regulation acquisition unit 108 can acquire parking / parking prohibition information from the navigation device. Also, for example, the traffic regulation acquisition unit 108 can acquire parking / parking prohibition information by recognizing a traffic sign or road marking indicating parking prohibition from the video acquired by the video acquisition unit 102.

The dangerous behavior detection unit 110 indicates that the parking prohibition information indicates that the location where the other vehicle is located is a parking prohibition section, and determines whether the other vehicle is stopped (step S156). . That is, the dangerous behavior detection unit 110 determines the dangerous behavior of the other vehicle based on the parking stop prohibition information and the stop state of the other vehicle. When the location where the other vehicle is located is a parking / parking prohibition section and the other vehicle is in a stopped state (YES in S156), the dangerous behavior detection unit 110 detects the other vehicle's danger as a parking / parking prohibition violation. An action is detected (step S158). In addition, when a vehicle is stopped in the parking / parking prohibition section, another vehicle may collide with the stopped vehicle. Alternatively, since a vehicle in which another vehicle is stopped is avoided, another vehicle may collide with the avoided vehicle. Therefore, it can be said that the act of prohibiting parking is a dangerous act.

Thereby, the recording control apparatus 100 according to the first embodiment can detect a dangerous act of another vehicle, such as a violation of parking and parking prohibition, which has caused an accident. Therefore, the recording control apparatus 100 according to the first embodiment can appropriately store an image obtained by photographing an illegal act of prohibiting parking / stopping of another vehicle that has caused an accident as event record data.

(Embodiment 2)
Next, a second embodiment will be described. The second embodiment is different from the first embodiment in the period for storing the video of the dangerous action of another vehicle as event record data. Since the hardware configuration of the vehicle 1 according to the second embodiment is substantially the same as that according to the first embodiment, the description thereof is omitted.

FIG. 11 is a diagram illustrating a configuration of the recording control apparatus 100 according to the second embodiment and the recording apparatus 50 including the recording control apparatus 100. The recording device 50 according to the second embodiment includes an imaging device 2, a sound collecting device 3, an ambient sensor 4, a speed sensor 5, a recording unit 10, a display unit 22, a speaker 24, and a recording control device 100. And have. The recording control apparatus 100 according to the second embodiment includes a video acquisition unit 102, a buffer memory 104, another vehicle detection unit 106, a traffic regulation acquisition unit 108, a dangerous act detection unit 110, a recording control unit 120, A reproduction control unit 130. The recording control apparatus 100 according to the second embodiment further includes a sound acquisition unit 210 and a sound determination unit 212.

The sound acquisition unit 210 acquires sound around the vehicle 1 from the sound collecting device 3. The sound determination unit 212 determines whether the sound acquired by the sound acquisition unit 210 is a collision sound. The collision sound is a sound generated when the vehicle 1, another vehicle, or another vehicle collides with a vehicle or an object different from these vehicles. For example, the sound determination unit 212 may determine that the sound is a collision sound when the volume of the sound acquired by the sound acquisition unit 210 is equal to or higher than a predetermined threshold. The voice determination unit 212 may store a sound wave or a frequency pattern indicating a collision sound in advance. In this case, the sound determination unit 212 compares the sound data acquired by the sound acquisition unit 210 with a sound wave or frequency pattern indicating a collision sound stored in advance. Then, the voice determination unit 212 determines that the voice is a collision sound when the degree of coincidence between the voice data acquired by the voice acquisition unit 210 and the pattern indicating the collision sound stored in advance is equal to or greater than a predetermined threshold. Judge that there is.

The recording control unit 120 stores, as event record data, a video of the dangerous action based on the time when the sound acquired by the sound acquisition unit 210 is determined to be a collision sound by the sound determination unit 212. That is, the recording control unit 120 stores, as event record data, an image including a period from the time when the dangerous action detection unit 110 detects a dangerous action of another vehicle to the time when the sound determination unit 212 determines a collision sound. Details will be described later.

FIG. 12 is a flowchart illustrating a recording control method performed by the recording control apparatus 100 according to the second embodiment. First, similarly to the process of S102 of FIG. 4, the recording control unit 120 starts normal recording (step S202). Then, similarly to the process of S10 of FIG. 4, the recording control apparatus 100 determines whether or not a dangerous action of another vehicle has been detected (step S204).

If no dangerous action is detected (NO in S204), the process of S206 is not performed, and the process proceeds to S210. On the other hand, when the dangerous action is detected (YES in S204), the recording control unit 120 determines whether or not a collision sound is detected within a predetermined period from the time when the dangerous action is detected (Step S204). S206). For example, the predetermined period Tth2 = 60 seconds may be set. That is, the recording control unit 120 may determine whether or not a collision sound has been detected within 60 seconds from the point in time when the dangerous act is detected.

When the collision sound is detected within a predetermined period from the time when the dangerous action is detected (YES in S206), the recording control unit 120 determines the period from the time when the dangerous action is detected to the time when the collision sound is detected. The included video is saved as event record data (step S208). That is, the recording control unit 120 stores, as event record data, an image including a period from the time when the dangerous action detection unit 110 detects a dangerous action of another vehicle to the time when the sound determination unit 212 determines a collision sound. Details will be described later.

On the other hand, if no collision sound is detected within a predetermined period from the time when the dangerous action is detected (NO in S206), the process of S208 is not performed, and the process proceeds to S210. That is, if no collision sound is detected within a predetermined period from the time when the dangerous action is detected, the video image of the dangerous action of the other vehicle is not stored as event record data. Note that the processing in S210 is the same as the processing in S106 in FIG.

FIG. 13 is a diagram for explaining the processing of FIG. While the recording control unit 120 is performing normal recording, that is, loop recording, the dangerous behavior detection unit 110 detects the dangerous behavior at time td. Then, the sound determination unit 212 determines a collision sound at time ts, which is a period T2 after time td. Here, T2 ≦ Tth2. In this case, the recording control unit 120 stores, as event recording data, a video of a period from a time td when the dangerous act is detected to a time teB that is back by a predetermined period Tb2. In addition, the recording control apparatus 100 stores an image of a period from time td to time ts as event recording data. Furthermore, the recording control unit 120 stores, as event record data, a video from the time ts at which the collision sound is detected to the time teA at which a predetermined period Ta2 has elapsed. Therefore, in this case, the recording control unit 120 stores the video during the period from time teB to time teA as event recording data.

Note that the period Ta2 and the period Tb2 may be different from the period Ta1 and the period Tb1, respectively. The period Ta2 and the period Tb2 are, for example, several tens of seconds, and can be preferably set to about 10 seconds to 30 seconds. Moreover, Ta2 = Tb2 may be sufficient. Furthermore, the period Ta2 and the period Tb2 may be different depending on the types of dangerous actions described above.

As described above, the recording control apparatus 100 according to the second embodiment is configured to store the video of the period before and after the point in time when the dangerous act is detected as the event recording data. Therefore, as in the case of the first embodiment, the recording control apparatus 100 according to the second embodiment can appropriately record the actions of other vehicles that are highly likely to be accident factors.

Also, the recording control apparatus 100 according to the second embodiment is configured to store a video of a period from the occurrence of a dangerous act of another vehicle to the occurrence of an accident as event record data. Therefore, it is possible to appropriately store an image of a period from the occurrence of a dangerous act of another vehicle that has caused the accident to the occurrence of the accident in a mode in which overwriting is prohibited. Therefore, the cause of the accident can be verified more appropriately than in the case of the first embodiment.

Furthermore, the recording control apparatus 100 according to the second embodiment is configured to determine the occurrence of an accident by detecting a collision sound. Therefore, the cause of the accident caused by the third party's other vehicle also occurs when the vehicle 1 that is the host vehicle does not encounter an accident and another vehicle or object that has performed a dangerous act collides with another vehicle or object. It becomes possible to prove properly.

Further, the recording control apparatus 100 according to the second embodiment does not store a video image of a dangerous action of another vehicle as event record data when no collision sound is detected within a predetermined period from the time when the dangerous action is detected. It is configured as follows. If the collision sound is not detected within a predetermined period from the time when the dangerous action is detected, it is unlikely that the dangerous action of another vehicle will cause an accident. Therefore, by setting it as such a structure, it can suppress storing the image | video which image | photographed the dangerous action of the other vehicle with high possibility of not causing the accident as event record data. Therefore, the data storage capacity can be saved.

(Embodiment 3)
Next, Embodiment 3 will be described. In the third embodiment, a period for storing a video of a dangerous act of another vehicle as event record data is different from the other embodiments. Note that the hardware configuration of the vehicle 1 according to the third embodiment is substantially the same as that according to the other embodiments, and a description thereof will be omitted.

FIG. 14 is a diagram illustrating a configuration of the recording control apparatus 100 according to the third embodiment and a recording apparatus 50 including the recording control apparatus 100. The recording device 50 according to the third embodiment includes an imaging device 2, a sound collecting device 3, an ambient sensor 4, a speed sensor 5, an acceleration sensor 6, a recording unit 10, a display unit 22, and a speaker 24. And a recording control device 100.

The acceleration sensor 6 detects a speed change of the vehicle 1, that is, an acceleration. The acceleration sensor 6 can detect an impact or the like generated when a collision occurs in the vehicle 1. Here, “when a collision occurs in the vehicle 1” includes a case where the vehicle 1 collides with some object including another vehicle and a case where another vehicle collides with the vehicle 1. The acceleration sensor 6 outputs acceleration information indicating the acceleration of the vehicle 1 to the recording control device 100.

The recording control apparatus 100 according to the third embodiment includes a video acquisition unit 102, a buffer memory 104, another vehicle detection unit 106, a traffic regulation acquisition unit 108, a dangerous act detection unit 110, a recording control unit 120, A reproduction control unit 130. The recording control apparatus 100 according to the third embodiment further includes an acceleration acquisition unit 310 and a collision determination unit 312.

The acceleration acquisition unit 310 acquires acceleration information related to the vehicle 1 from the acceleration sensor 6. The collision determination unit 312 determines whether or not a collision has occurred in the vehicle 1 from the acceleration indicated by the acceleration information acquired by the acceleration acquisition unit 310. The collision determination unit 312 detects that a collision has occurred when the impact level detected by the acceleration sensor 6 exceeds a predetermined value. The impact level exceeding a predetermined value may be rephrased as the acceleration exceeding the predetermined value. That is, the collision determination unit 312 determines whether or not the acceleration acquired by the acceleration acquisition unit 310 corresponds to the collision of the vehicle 1.

The recording control unit 120 stores, as event record data, an image of the dangerous action based on the time point when the acceleration acquired by the acceleration acquisition unit 310 is determined to correspond to the collision of the vehicle 1 by the collision determination unit 312. That is, the recording control unit 120 stores, as event record data, an image including a period from the time when the dangerous action detection unit 110 detects a dangerous action of another vehicle to the time when the collision determination unit 312 determines a collision. Details will be described later.

FIG. 15 is a flowchart illustrating a recording control method performed by the recording control apparatus 100 according to the third embodiment. First, similarly to the process of S102 of FIG. 4, the recording control unit 120 starts normal recording (step S302). Then, similarly to the process of S10 of FIG. 4, the recording control apparatus 100 determines whether or not a dangerous action of another vehicle has been detected (step S304).

If no dangerous action is detected (NO in S304), the process of S306 is not performed, and the process proceeds to S310. On the other hand, when a dangerous action is detected (YES in S304), the recording control unit 120 determines whether or not a collision of the host vehicle, that is, the vehicle 1 is detected within a predetermined period from when the dangerous action is detected. Is determined (step S306). For example, the predetermined period Tth3 = 60 seconds may be used. In other words, the recording control unit 120 may determine whether or not a collision is detected within 60 seconds from the point in time when the dangerous act is detected.

When a collision sound is detected within a predetermined period from the time when the dangerous action is detected (YES in S306), the recording control unit 120 starts from the time when the dangerous action is detected until the time when the collision of the vehicle 1 is detected. The video including the period is saved as event record data (step S308). That is, the recording control unit 120 stores, as event record data, an image including a period from the time when the dangerous action detection unit 110 detects a dangerous action of another vehicle to the time when the collision determination unit 312 determines a collision. Details will be described later.

On the other hand, when a collision is not detected within a predetermined period from the time when a dangerous act is detected (NO in S306), the process proceeds to S310 without performing the process in S308. That is, when no collision is detected within a predetermined period from the time when the dangerous action is detected, the video image of the dangerous action of the other vehicle is not stored as event record data. Note that the process of S310 is the same as the process of S106 of FIG.

FIG. 16 is a diagram for explaining the processing of FIG. While the recording control unit 120 is performing normal recording, that is, loop recording, the dangerous behavior detection unit 110 detects the dangerous behavior at time td. Then, the collision determination unit 312 determines a collision at time tc, which is after a period T3 from time td. Here, T3 ≦ Tth3. In this case, the recording control unit 120 stores, as event recording data, a video of a period from a time td when the dangerous act is detected to a time teB that is back by a predetermined period Tb3. In addition, the recording control apparatus 100 stores an image of a period from time td to time tc as event recording data. Furthermore, the recording control unit 120 saves, as event recording data, a video from the time tc when the collision is detected to a time teA at which a predetermined period Ta3 has elapsed. Therefore, in this case, the recording control unit 120 stores the video during the period from time teB to time teA as event recording data.

Note that the period Ta3 and the period Tb3 may be different from the period Ta1 and the period Tb1, respectively. Similarly, the period Ta3 and the period Tb3 may be different from the period Ta2 and the period Tb2, respectively. Further, the period Ta3 and the period Tb3 are, for example, several tens of seconds, and can be preferably set to about 10 to 30 seconds. Moreover, Ta3 = Tb3 may be sufficient. Furthermore, the period Ta3 and the period Tb3 may be different depending on the types of dangerous actions described above.

As described above, the recording control device 100 according to the third embodiment is configured to store the video of the period before and after the dangerous action is detected as the event recording data. Therefore, as in the case of the first embodiment, the recording control apparatus 100 according to the third embodiment can appropriately record the actions of other vehicles that are highly likely to be accident factors.

Further, the recording control apparatus 100 according to the third embodiment is configured to store an image of a period from the occurrence of a dangerous act of another vehicle to the occurrence of an accident as event record data. Therefore, it is possible to appropriately store an image of a period from the occurrence of a dangerous act of another vehicle that has caused the accident to the occurrence of the accident in a mode in which overwriting is prohibited. Therefore, the cause of the accident can be verified more appropriately than in the case of the first embodiment.

Furthermore, the recording control apparatus 100 according to the third embodiment is configured to determine the occurrence of an accident by detecting a collision of the vehicle 1 that is the host vehicle. Therefore, even when the vehicle 1 encounters an accident due to a dangerous act of another vehicle, the cause of the accident caused by the other vehicle can be appropriately verified.

In addition, the recording control apparatus 100 according to the third embodiment does not store a video image of a dangerous action of another vehicle as event record data when a collision is not detected within a predetermined period from the time when the dangerous action is detected. It is configured. When a collision is not detected within a predetermined period from the time when a dangerous act is detected, it is unlikely that a dangerous act of another vehicle will cause an accident. Therefore, by setting it as such a structure, it can suppress storing the image | video which image | photographed the dangerous action of the other vehicle with high possibility of not causing the accident as event record data. Therefore, the data storage capacity can be saved.

(Modification)
Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, the order of the processes in the flowcharts described above can be changed as appropriate. One or more of the processes in the flowcharts described above may be omitted. For example, the process of S206 shown in FIG. 12 and the process of S306 shown in FIG. However, by performing these processes, the data storage capacity can be saved as described above.

Also, the processes shown in FIGS. 6 to 10 can coexist. That is, the recording control apparatus 100 may perform two or more processes shown in FIGS. 6 to 10 in parallel. Then, the dangerous behavior detection unit 110 indicates that the other vehicle has performed a dangerous behavior when the other vehicle has performed at least one of overspeed, signal ignorance, suspension violation, overtaking prohibition violation, and parking stop prohibition violation. You may judge. Further, the dangerous action detection unit 110 may detect not only the above-described examples of dangerous actions but also various dangerous actions such as scolding and meandering.

Also, the program can be stored using various types of non-transitory computer readable media and supplied to a computer. Non-transitory computer readable media include various types of tangible storage media (tangible storage medium). Examples of non-transitory computer-readable media include magnetic recording media (eg flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg magneto-optical discs), CD-ROMs (Read Only Memory), CD-Rs, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable ROM), flash ROM, RAM (random access memory)) are included. The program may also be supplied to the computer by various types of temporary computer-readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

This application claims priority based on Japanese Patent Application No. 2018-100365 filed on May 25, 2018, the entire disclosure of which is incorporated herein.

The present invention can be used, for example, in a recording control device for recording video.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Imaging device 3 Sound collecting device 4 Ambient sensor 5 Speed sensor 6 Acceleration sensor 10 Recording part 12 Normal recording part 14 Event recording part 50 Recording apparatus 100 Recording control apparatus 102 Image | video acquisition part 104 Buffer memory 106 Other vehicle detection part 108 Traffic Legal acquisition unit 110 Dangerous behavior detection unit 120 Recording control unit 130 Playback control unit 210 Audio acquisition unit 212 Audio determination unit 310 Acceleration acquisition unit 312 Collision determination unit

Claims

A video acquisition unit that acquires video from an imaging device that captures the surroundings of the vehicle;
An other vehicle detection unit for detecting another vehicle different from the vehicle and detecting a state of the detected other vehicle;
A traffic regulation obtaining unit for obtaining traffic regulation information corresponding to a traffic regulation to be followed by another vehicle detected by the other vehicle detection unit;
A dangerous behavior detection unit for determining whether the state of the other vehicle detected by the other vehicle detection unit is a dangerous behavior based on the traffic regulation information acquired by the traffic regulation acquisition unit;
A recording control device comprising: a recording control unit that stores, as event recording data, an image including a point in time when the dangerous behavior detection unit detects a dangerous behavior of the other vehicle.
The recording control unit includes an image of a period after a predetermined period has elapsed from the time when the dangerous action detection unit detects the dangerous action of the other vehicle, and a predetermined period after the dangerous action detection unit detects the dangerous action of the other vehicle The recording control apparatus according to claim 1, wherein a video of a retroactive period is stored as the event recording data.
An audio acquisition unit for acquiring audio around the vehicle;
A sound determination unit that determines whether the sound acquired by the sound acquisition unit is a collision sound;
The recording control unit stores, as the event recording data, an image including a period from a time point when the dangerous action detection unit detects a dangerous action of the other vehicle to a time point when the sound determination unit determines a collision sound. Item 3. The recording control apparatus according to Item 1 or 2.
An acceleration acquisition unit for acquiring information indicating the acceleration of the vehicle;
A collision determination unit that determines whether an acceleration indicated by the information acquired by the acceleration acquisition unit corresponds to a collision of the vehicle;
The recording control unit stores, as the event record data, an image including a period from a time point when the dangerous action detection unit detects a dangerous action of the other vehicle to a time point when the collision determination unit determines a collision. The recording control apparatus according to 1 or 2.
The other vehicle detection unit detects a traveling speed of the other vehicle,
The traffic regulation acquisition unit acquires speed limit information of a road on which the other vehicle is traveling,
The recording control apparatus according to any one of claims 1 to 4, wherein the dangerous action detection unit determines a dangerous action of the other vehicle based on the speed limit information and a traveling speed of the other vehicle.
The other vehicle detection unit detects a traveling speed of the other vehicle,
The traffic regulation acquiring unit acquires stop obligation information regarding a road on which the other vehicle is traveling,
The recording control apparatus according to any one of claims 1 to 4, wherein the dangerous action detection unit determines a dangerous action of the other vehicle based on the stop duty information and a traveling speed of the other vehicle.
The other vehicle detection unit detects a movement transition of the other vehicle,
The traffic regulation acquisition unit acquires overtaking prohibition information on a road on which the other vehicle is traveling,
The recording control apparatus according to any one of claims 1 to 4, wherein the dangerous behavior detection unit determines a dangerous behavior of the other vehicle based on the overtaking prohibition information and a movement transition of the other vehicle.
The other vehicle detection unit detects a stop state of the other vehicle,
The traffic regulation acquisition unit acquires parking prohibition information on a road on which the other vehicle is traveling,
The recording control device according to any one of claims 1 to 4, wherein the dangerous behavior detection unit determines a dangerous behavior of the other vehicle based on the parking stop prohibition information and a stopped state of the other vehicle.
Obtain video from an imaging device that captures the area around the vehicle,
Detecting another vehicle different from the vehicle, detecting a state of the detected other vehicle,
Obtaining traffic regulation information corresponding to the traffic regulation to be followed by the detected other vehicle;
Determining whether the detected state of the other vehicle is a dangerous act based on the acquired traffic regulation information;
A recording control method for storing an image including event recording data including a time point when a dangerous act of the other vehicle is detected.
Acquiring video from an imaging device that captures the surroundings of the vehicle;
Detecting another vehicle different from the vehicle, and detecting a state of the detected other vehicle;
Obtaining traffic regulation information corresponding to the traffic regulation to be followed by the detected other vehicle;
Determining whether the detected state of the other vehicle is a dangerous act based on the acquired traffic regulation information;
A program for causing a computer to execute a step of storing, as event record data, an image including a point in time when the dangerous behavior of the other vehicle is detected.