JP2022174501A - Photographing device, and program - Google Patents

Abstract

To leave a video necessary for monitoring and furthermore to enabe suppression of power consumption.SOLUTION: A photographing device comprises: a plurality of photographing units; an activation unit that activates a first photographing unit from among the plurality of photographing units when an acceleration sensor detects an impact; a movement direction determination unit that determines a moving direction of a moving object included in the angle of view of the first photographing unit activated by the activation unit; and a photographing range switching unit that on the basis of the direction in which the moving object moves and which is determined by the movement direction determination unit, activates a second photographing unit capable of photographing a direction in which the moving object moves among the plurality of photographing units, and stops the photographing unit other than the second photographing unit from among the plurality of photographing unit, when the moving object moves to the outside the viewing angle of the first photographing unit.SELECTED DRAWING: Figure 3

Description

The present invention relates to an imaging device and a program.

2. Description of the Related Art For the purpose of monitoring when parking a vehicle, there is known a photographing device or monitoring system that includes a plurality of cameras that respectively photograph a plurality of areas around a vehicle. BACKGROUND ART For the purpose of power saving, there is known a vehicle monitoring system that starts recording a captured image when a moving object is detected or an impact is detected (Patent Document 1).

JP 2014-236492 A

In the monitoring system described in Patent Literature 1, when a plurality of cameras are used to capture images of a plurality of ranges, it is not possible to sufficiently and efficiently reduce power consumption while retaining images necessary for monitoring. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides an imaging apparatus and a program capable of suppressing power consumption while leaving images necessary for monitoring.

The present invention has been made to solve the above problems, and one aspect of the present invention is to activate a first image capturing unit among the plurality of image capturing units when an acceleration sensor detects an impact by a plurality of image capturing units. a moving direction determining unit that determines a moving direction of a moving object included in the angle of view of the first imaging unit activated by the starting unit; and the moving object determined by the moving direction determining unit Based on the moving direction, when the moving object moves outside the angle of view of the first capturing unit, a second capturing unit capable of capturing the moving direction of the moving object among the plurality of capturing units is activated. and a photographing range switching unit for stopping the photographing units other than the second photographing unit among the plurality of photographing units.

In one aspect of the present invention, in the imaging device described above, the activation unit activates the first imaging unit among the plurality of imaging units according to the direction of the impact detected by the acceleration sensor.

In one aspect of the present invention, in the photographing device described above, when the plurality of moving bodies are included in the angle of view of the first photographing section, the moving direction determination unit A direction in which the specific moving object moves is determined.

In one aspect of the present invention, in the photographing device described above, the photographing range switching unit switches the first photographing unit for a predetermined time when the moving object moves outside the angle of view of the first photographing unit. keep booting.

Further, according to one aspect of the present invention, the imaging range switching unit is configured when the moving object moves from within the angle of view of the first imaging unit to within the angle of view of the second imaging unit, and When the moving object is captured within a predetermined range within the angle of view of the 2 photographing unit for a predetermined time or longer, the first photographing unit is continuously activated.

Further, according to one aspect of the present invention, a computer of an imaging device including a plurality of imaging units includes an activation step of activating a first imaging unit among the plurality of imaging units when an acceleration sensor detects an impact, and the activation step. a moving direction determining step of determining a moving direction of a moving object included in an angle of view of the activated first photographing unit; When the body moves out of the angle of view of the first imaging unit, a second imaging unit among the plurality of imaging units capable of imaging the moving direction of the moving object is activated, and one of the plurality of imaging units is activated. and a shooting range switching step of stopping the shooting units other than the second shooting unit.

According to the present invention, it is possible to reduce power consumption while leaving video necessary for monitoring.

1 is a diagram schematically showing an example of the arrangement of drive recorders mounted on a vehicle according to an embodiment of the invention; FIG. 1 is a diagram showing an example hardware configuration of a drive recorder according to an embodiment of the present invention; FIG. It is a figure showing an example of functional composition of a drive recorder concerning an embodiment of the present invention. FIG. 7 is a diagram showing an example of imaging unit activation processing according to the embodiment of the present invention; It is a figure which shows an example of the imaging|photography process which concerns on embodiment of this invention. It is a figure which shows an example of the image image|photographed by the vehicle interior imaging|photography part which concerns on embodiment of this invention. It is a figure which shows an example of the image image|photographed by the front imaging|photography part which concerns on embodiment of this invention. It is a figure which shows an example of the image image|photographed by the back imaging|photography part which concerns on embodiment of this invention. It is a figure which shows an example of the imaging|photography process based on the modification 1 of embodiment of this invention. It is a figure which shows an example of the imaging|photography process based on the modification 2 of embodiment of this invention. It is a figure which shows an example of the image image|photographed by the front imaging|photography part based on the modification 2 of embodiment of this invention.

(embodiment)
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram schematically showing an example of arrangement of a drive recorder 1 mounted on a vehicle 2 according to this embodiment. FIG. 1 shows a plan view of the vehicle 2 viewed from above. The drive recorder 1 shoots the surrounding range of the vehicle 2 mainly for the purpose of monitoring when the vehicle 2 is parked.

The drive recorder 1 is installed in the front portion of the vehicle 2 . The front portion is, for example, the windshield of the vehicle 2 . The drive recorder 1 includes a plurality of cameras that photograph a plurality of different ranges around the vehicle 2, respectively. The drive recorder 1 includes a front camera 11, an in-vehicle camera 12, and a rear camera 13 as the plurality of cameras. The forward photographing camera 11 and the vehicle interior photographing camera 12 are provided integrally with the main body of the drive recorder 1 . The rear camera 13 is provided separately from the main body of the drive recorder 1. - 特許庁

The forward photographing camera 11 photographs a range in front of the vehicle 2 . A forward photographing camera photographing range V<b>1 indicates a forward range of the surroundings of the vehicle 2 . The front camera shooting range V1 corresponds to the angle of view of the front camera 11 . In this embodiment, the angle of view is the range in which the camera can capture images.
The in-vehicle photographing camera 12 photographs the inside of the vehicle 2 and the left and right lateral ranges of the surroundings of the vehicle 2 . The in-vehicle camera imaging range V<b>2 indicates the range inside the vehicle 2 and the left and right side ranges of the surroundings of the vehicle 2 . The in-vehicle camera imaging range V2 corresponds to the angle of view of the in-vehicle camera 12 .
The rearward photographing camera 13 photographs a range behind the vehicle 2 . The in-vehicle camera imaging range V<b>2 indicates the rear range of the surroundings of the vehicle 2 . The rear imaging camera imaging range V3 corresponds to the angle of view of the rear imaging camera 13 .
In addition, the photographing range including the front photographing camera photographing range V1, the interior photographing camera photographing range V2, and the rear photographing camera photographing range V3 includes the entire surrounding area of the vehicle 2.

In the drive recorder 1, by specifying the camera to be activated, it is possible to leave the necessary video without activating all the cameras, so power consumption can be suppressed.

[Configuration of drive recorder 1]
FIG. 2 is a diagram showing an example of the hardware configuration of the drive recorder 1 according to this embodiment. The drive recorder 1 includes an acceleration sensor 10, a front camera 11, an in-vehicle camera 12, a rear camera 13, a vehicle signal cable 14, a communication module 15, a GNSS receiver 16, a CPU 17, and a ROM 18. , a RAM 19 , an operation button 110 , a display 111 and a speaker 112 .

Acceleration sensor 10, front camera 11, in-vehicle camera 12, rear camera 13, vehicle signal cable 14, communication module 15, GNSS receiver 16, CPU 17, ROM 18, RAM 19, operation button 110, display 111, and speaker 112 , are connected to each other by signal lines.
As described above, the rear camera 13 is provided separately from the main body of the drive recorder 1 . The rear camera 13 and the main body of the drive recorder 1 are connected by a cable. The cable is part of the signal line mentioned above. Note that the rear camera 13 and the main body of the drive recorder 1 may communicate with each other through wireless communication. Wireless communication is, for example, short-range wireless communication.

The acceleration sensor 10 measures acceleration of the vehicle 2 .
The forward photographing camera 11 photographs a range in front of the vehicle 2 .
The in-vehicle photographing camera 12 photographs the inside of the vehicle 2 and the left and right lateral ranges of the surroundings of the vehicle 2 .
The rearward photographing camera 13 photographs a range behind the vehicle 2 .

A vehicle signal cable 14 acquires a vehicle signal from the vehicle 2 . A vehicle signal is a signal that indicates the state of the vehicle 2 . The vehicle signal cable 14 acquires various vehicle signals from an ECU (Electronic Control Unit) of the vehicle 2 . Various vehicle signals include, for example, an ignition switch signal that indicates whether the ignition is turned on or off.

The communication module 15 transmits and receives various information via the wireless network NW. The communication module 15 has a communication interface (I/F).
The GNSS receiver 16 acquires information indicating the current position of the vehicle 2 using GNSS (Global Navigation Satellite System). The drive recorder 1 may acquire information indicating the current position of the vehicle 2 using GPS (Global Positioning System). In that case, the drive recorder 1 has a GPS receiver.

The CPU 17 reads programs from the ROM 18 and executes various controls according to the read programs. The CPU 17 incorporates a plurality of internal storage media such as registers. The CPU 17 temporarily stores data from the ROM 18 in an internal storage medium and performs arithmetic processing on the data. The CPU 17 outputs the calculation result to the register, and further outputs it from the register to the RAM 19 or an external storage medium.

The ROM 18 is a main storage device that stores various programs, data, parameters, and the like for the CPU 17 to perform various calculations and controls. The ROM 18 can retain the stored contents even when the power supplied to the ROM 18 is zero.

A RAM 19 is a main memory used by the CPU 17 as a working memory. The CPU 17 writes and erases programs and data into the RAM 19 . The RAM 19 is configured using a storage device such as a semiconductor storage device, for example.

The operation button 110 is a button for the user to operate the drive recorder 1 .
The display 111 displays various screens. The display 111 is, for example, a liquid crystal display or an organic electroluminescence (EL) display.
Note that the display 111 may be a touch panel, and in that case, the operation buttons 110 may be integrated with the display 111 . Alternatively, part of the operation buttons 110 may be integrated with the display 111 .
The speaker 112 outputs audio.

FIG. 3 is a diagram showing an example of the functional configuration of the drive recorder 1 according to this embodiment. The drive recorder 1 includes a control unit 20, an impact detection unit 21, a vehicle signal acquisition unit 22, an imaging unit 23, an operation unit 24, an audio output unit 25, a display unit 26, a communication unit 27, and a storage unit. a portion 28;

The control unit 20 performs various controls on the drive recorder 1 . The control unit 20 includes, for example, a CPU, and performs various calculations and exchanges of information. Each functional unit included in the control unit 20 is implemented by the CPU reading a program from the ROM and executing processing. Each functional unit included in the control unit 20 will be described later. The control unit 20 includes the CPU 16, ROM 17, and RAM 18 shown in FIG.

The impact detection unit 21 detects impact applied to the vehicle 2 . The impact detection unit 21 generates impact detection data A1 based on the detection result. The impact detection data A1 indicates at least one of magnitude and direction of impact applied to the drive recorder 1 . Impact detection unit 21 includes acceleration sensor 10 shown in FIG.

The vehicle signal acquisition unit 22 acquires vehicle signals of the vehicle 2 . The vehicle signal acquisition unit 22 generates vehicle signal data B1 based on the acquired vehicle signal. Vehicle signal data B1 includes an ignition switch signal. The operation unit 24 includes the vehicle signal cable 14 shown in FIG.

The photographing unit 23 photographs the surroundings of the vehicle 2 . The imaging unit 23 includes a front imaging unit 230 , an in-vehicle imaging unit 231 , and a rear imaging unit 232 .
The forward photographing unit 230 photographs a range in front of the vehicle 2 . The forward imaging unit 230 generates forward image data C1. Front image data C1 indicates a moving image captured by front imaging section 230 .
The forward photographing unit 230 includes the forward photographing camera 11 shown in FIGS. 1 and 2 .
The vehicle interior photographing unit 231 photographs the interior of the vehicle 2 and the left and right lateral ranges of the surroundings of the vehicle 2 . The in-vehicle imaging unit 231 generates in-vehicle image data D1. The in-vehicle image data D1 indicates a moving image captured by the in-vehicle imaging section 231 . The in-vehicle imaging unit 231 includes the in-vehicle imaging camera 12 shown in FIGS. 1 and 2 .
The rear photographing unit 232 photographs a range behind the vehicle 2 . The rear imaging section 232 generates rear image data E1. The rear image data E1 indicates a moving image captured by the rear imaging section 232 . The rear photographing unit 232 includes the rear photographing camera 13 shown in FIGS. 1 and 2 .

Various operations are performed on the operation unit 24 by the user of the drive recorder 1 . The operation unit 24 includes the operation button 110 shown in FIG.

The audio output unit 25 outputs various sounds. The sound output by the sound output unit 25 includes, for example, a warning sound.

The display unit 26 displays various screens. The screen displayed by the display unit 26 includes a moving image of the surroundings of the vehicle 2 captured by the imaging unit 23 . The display unit 26, for example, divides the screen to display the moving image captured by the front imaging unit 230, the moving image captured by the in-vehicle imaging unit 231, and the moving image captured by the rear imaging unit 232, respectively.

The communication unit 27 communicates with an external device. The external device with which the communication unit 27 communicates includes a server (not shown). The communication unit 27 includes the communication module 15 shown in FIG.
The storage unit 28 stores various information. Storage unit 28 includes RAM 112 shown in FIG.

Here, each functional unit included in the control unit 20 will be described. The control unit 20 includes an acquisition unit 200 , an operation reception unit 206 , an image recording unit 207 , a display control unit 208 , an audio output control unit 209 , an imaging control unit 210 and an image analysis unit 216 .

Acquisition unit 200 acquires various types of information. The acquisition unit 200 includes an impact detection data acquisition unit 201 , a vehicle signal data acquisition unit 202 , a front captured image acquisition unit 203 , an in-vehicle captured image acquisition unit 204 , and a rear captured image acquisition unit 205 .

The impact detection data acquisition unit 201 acquires impact detection data A1 from the impact detection unit 21 .
The vehicle signal data acquisition unit 202 acquires the ignition switch signal included in the vehicle signal data B1 from the vehicle signal acquisition unit 22 .
The front captured image acquisition unit 203 acquires the front image data C1 from the front image capturing unit 230 .
The in-vehicle captured image acquisition unit 204 acquires the in-vehicle image data D<b>1 from the in-vehicle image capturing unit 231 .
The rear photographed image acquisition unit 205 acquires the rear image data E1 from the rear photographing unit 232 .

The operation reception unit 206 receives various operations performed on the operation unit 24 .
The image recording unit 207 causes the storage unit 28 to store the front image data C1, the vehicle interior image data D1, and the rear image data E1. Note that the image recording unit 207 causes the storage unit 28 to store an image constantly captured by the image capturing unit 23 while the vehicle 2 is running.
The display control unit 208 controls the display unit 26 to display various screens on the display unit 26 .
The audio output control unit 209 controls the audio output unit 25 and causes the audio output unit 25 to output various sounds.

The imaging control section 210 controls the imaging section 23 . The imaging control unit 210 includes a vehicle state determination unit 211 , an activation unit 212 , a moving body determination unit 213 , a movement direction determination unit 214 and an imaging range switching unit 215 .

Vehicle state determination unit 211 determines whether or not the ignition is on (or off) based on the ignition switch signal included in vehicle signal data B1.

When the acceleration sensor 10 detects an impact based on the impact detection data A1, the activation unit 212 activates any one of a plurality of imaging units including the front imaging unit 230, the vehicle interior imaging unit 231, and the rear imaging unit 232. Start as the first imaging unit. In this embodiment, the first imaging unit is an imaging unit that responds to the direction of impact detected by the acceleration sensor 10 .

Activating the forward photographing unit 230 means activating the forward photographing camera 11 . Activating the in-vehicle imaging unit 231 means activating the in-vehicle imaging camera 12 . Activating the rear photographing unit 232 means activating the rear photographing camera 13 .

The moving object determination unit 213 determines whether or not a moving object is included within the angle of view of the first imaging unit activated by the activation unit 212 . A moving object in an image is an image of a subject included in the image, and is captured as an image whose position in the image changes according to time.

The movement direction determination unit 214 determines the direction in which the moving object included in the angle of view of the first imaging unit activated by the activation unit 212 moves.

Based on the moving direction of the moving object determined by the moving direction determination unit 214, the imaging range switching unit 215 switches the forward imaging unit 230 and the vehicle interior imaging unit when the moving object moves outside the angle of view of the first imaging unit. 231 and a rear imaging unit 232 as a second imaging unit capable of imaging the moving direction of the moving body, and the second imaging unit among the plurality of imaging units. Stop the shooting section other than

Here, in this embodiment, activating a camera means switching the power of the camera from an off state to an on state. Also, stopping a camera means controlling the power of the camera from an on state to an off state.
Note that activating a camera may be controlled to turn on the power supply of the camera in advance as a standby state, and control to switch the power supply from the standby state to a shooting-ready state. In that case, stopping the camera may be control for switching the power supply from a photographable state to a standby state.

The image analysis unit 216 analyzes the image represented by the front image data C1 acquired by the front captured image acquisition unit 203, the image represented by the vehicle interior image data D1 acquired by the vehicle interior captured image acquisition unit 204, and the image acquired by the rear captured image acquisition unit 205. Image analysis is performed for each image represented by the rear image data E1.

Note that the activation unit 212 may notify that the imaging has started when any one of the plurality of imaging units is activated. In that case, for example, the activation unit 212 causes the audio output control unit 209 to output audio for notification.

[Shooting process]
Here, the photographing process by the drive recorder 1 will be described with reference to FIGS. 4 and 5. FIG. The drive recorder 1 executes the photographing unit activation process before executing the photographing process.
FIG. 4 is a diagram illustrating an example of imaging unit activation processing according to the present embodiment. The imaging unit activation process is executed by the control unit 20 . For example, while the power of the drive recorder 1 is on, the control unit 20 repeatedly executes the imaging unit activation process.
Here, the front imaging unit 230, the in-vehicle imaging unit 231, and the rear imaging unit 232 are stopped before the imaging unit activation process is started.

Step S10: The vehicle state determination unit 211 determines whether or not the ignition of the vehicle 2 is off. Vehicle state determination unit 211 acquires the ignition switch signal included in vehicle signal data B<b>1 from vehicle signal data acquisition unit 202 . Vehicle state determination unit 211 determines that the ignition is off when the obtained ignition switch signal indicates that the ignition is off. The vehicle state determination unit 211 determines that the vehicle 2 is parked by determining that the ignition is off.

When the vehicle state determination unit 211 determines that the ignition is off (step S10; YES), the imaging control unit 210 executes the process of step S20. On the other hand, when the vehicle state determination unit 211 determines that the ignition is on (step S10; NO), the control unit 20 ends the photographing unit activation process.

Step S20: The activation unit 212 determines whether or not all imaging units included in the imaging unit 23 are stopped. In this embodiment, all the imaging units included in the imaging unit 23 are a front imaging unit 230 , an in-vehicle imaging unit 231 , and a rear imaging unit 232 .

When the activating unit 212 determines that all the imaging units included in the imaging unit 23 are stopped (step S20; YES), the activating unit 212 activates one or more of the imaging units included in the imaging unit 23. is activated (step S20; NO), the control unit 20 terminates the imaging unit activation process.

Step S30: The activation unit 212 determines whether or not the acceleration sensor 10 has detected an impact. The activation unit 212 acquires the impact detection data A1 from the impact detection data acquisition unit 201 . The activation unit 212 determines that an impact has been detected when the impact value indicated by the acquired impact detection data A1 is greater than or equal to a predetermined threshold.

When the activation unit 212 determines that an impact has been detected (step S30; YES), the imaging control unit 210 executes the process of step S40. On the other hand, when the activation unit 212 determines that no impact has been detected (step S30; NO), the control unit 20 terminates the imaging unit activation process.

Step S<b>40 : The activation unit 212 activates the first imaging unit among the plurality of imaging units according to the direction of the impact detected by the acceleration sensor 10 . The activation unit 212 activates one of the plurality of imaging units as the first imaging unit according to the direction of impact indicated by the impact detection data A1 acquired in step S30. After that, the activation unit 212 supplies the impact detection data A<b>1 to the movement direction determination unit 214 . In addition, the activation unit 212 supplies information indicating the time when the acceleration sensor 10 detects the impact to the moving object determination unit 213 .

Here, when the direction of impact indicated by the impact detection data A1 is the front of the vehicle 2, the activation unit 212 activates the front photographing unit 230. FIG. This is the case, for example, when another vehicle or an obstacle collides with the vehicle 2 from the front.

The activation unit 212 activates the in-vehicle photographing unit 231 when the direction of impact indicated by the impact detection data A1 is the left and right sides of the vehicle 2 . In this case, for example, when another vehicle or an obstacle collides with the vehicle 2 from either the left or right side of the vehicle 2, or when an impact is caused by opening and closing the door of the vehicle 2 by a car break-in. and so on.

The activation unit 212 activates the rear imaging unit 232 when the direction of the impact indicated by the impact detection data A1 is the rear of the vehicle 2 . This is the case, for example, when another vehicle or an obstacle collides with the vehicle 2 from behind.

Note that when the direction of impact is an oblique direction, the activation unit 212 determines the direction closest to the oblique direction among the front, side, and rear. The activation unit 212 activates one of the plurality of imaging units as the first imaging unit according to the determined direction.
With this, the control unit 20 ends the imaging unit start-up processing.

In addition, in the photographing unit start-up process shown in FIG. 4, the order of the processes of steps S10, S20, and S30 may be arbitrarily changed and executed.

Next, the photographing process will be described with reference to FIG. FIG. 5 is a diagram showing an example of imaging processing according to the present embodiment. The photographing process shown in FIG. 5 is executed by the control unit 20 when any one of the photographing units is activated in step S40 of the photographing unit activation process shown in FIG.

Step S50: The moving object determination unit 213 determines whether or not a moving object is included within the angle of view of the first imaging unit within a predetermined time after the imaging process shown in FIG. 5 is started. Here, the moving object determination unit 213 obtains the front image data C1, the front image data C1, the front image data C1, or the rear image acquisition unit 205 from the front image acquisition unit 203, the vehicle interior image acquisition unit 204, or the rear image acquisition unit 205, depending on the imaging unit activated by the activation unit 212. Either the in-vehicle image data D1 or the rear image data E1 is acquired. For example, when the activation unit 212 activates the front captured image acquisition unit 203 , the moving object determination unit 213 acquires the front image data C<b>1 from the front captured image acquisition unit 203 .

The moving object determination unit 213 supplies the acquired image data to the image analysis unit 216 . The image analysis unit 216 performs image analysis on the image data supplied from the moving object determination unit 213 . The image analysis unit 216 identifies the image of the moving object included in the image indicated by the image data through image analysis. The mobile object is, for example, another vehicle, a person, an obstacle, or the like.
For example, the image analysis unit 216 identifies images of moving objects based on machine learning. In the machine learning, a learning result obtained by learning an identification target in advance is used. Note that the image analysis unit 216 may identify the image of the moving object included in the image based on template matching.

The image analysis unit 216 generates moving body identification information as a result of the image analysis. The moving object identification information is information indicating the moving object identified by the image analysis unit 216 . The image analysis unit 216 outputs the generated moving object identification information to the moving object determination unit 213 and the movement direction determination unit 214, respectively.

Based on the moving object identification information generated by the image analysis unit 216, the moving object determination unit 213 determines whether or not the moving object is included within the angle of view of the first imaging unit within a predetermined time.

When the moving object determination unit 213 determines that the moving object is included in the angle of view of the first imaging unit within the predetermined time (step S50; YES), the imaging control unit 210 executes the process of step S60. On the other hand, when the moving object determination unit 213 determines that the moving object is not included in the angle of view of the first imaging unit within the predetermined time (step S50; NO), the imaging control unit 210 executes the process of step S100. do.

Step S60: The movement direction determination unit 214 determines the direction in which the moving object included in the angle of view of the first imaging unit moves. Here, the moving direction determination unit 214 determines the moving direction of the moving object in the image captured by the first imaging unit based on the moving object identification information generated by the image analysis unit 216 . Next, the moving direction determination unit 214 determines the moving direction of the moving object based on the determined direction and which of the plurality of imaging units included in the imaging unit 23 is activated. .
In other words, the movement direction determination unit 214 determines the direction in which the moving body moves in the image captured by the first imaging unit and which of the plurality of imaging units included in the imaging unit 23 is active. Based on this, the moving direction of the moving object included in the angle of view of the first imaging unit is determined.

Here, as an example, a case where a human being applies an impact to the door of the vehicle 2 from the right side of the vehicle 2 will be described. In this case, the activation unit 212 activates the vehicle interior imaging unit 231 as the first imaging unit. On the other hand, the front imaging unit 230 and the vehicle interior imaging unit 231 remain stopped.
FIG. 6 shows a side photographed image P1 as an example of an image photographed by the in-vehicle photographing section 231. As shown in FIG. The side photographed image P1 is an image photographed by the vehicle interior photographing unit 231 immediately after a person impacts the door of the vehicle 2 from the right side of the vehicle 2 .

A moving object M1 indicates an image of a moving object identified as a result of image analysis performed by the image analysis unit 216 on the side shot image P1. Since the moving object M1 is located on the right side of the vehicle 2, it is shown at the left end in the side shot image P1. The human, who is the mobile object M1, starts moving forward of the vehicle 2 immediately after impacting the door.

The moving direction determining unit 214 determines a temporal change in the position of the moving object M1 in the side shot image P1 based on the moving object identification information. Thereby, the movement direction determination unit 214 determines the direction in which the moving body M1 moves in the side shot image P1. Next, the movement direction determination unit 214 determines the direction in which the moving body M1 moves based on the determined direction and the fact that the first imaging unit being activated is the vehicle interior imaging unit 231 . In the example shown in FIG. 6 , the movement direction determination unit 214 determines that the direction in which the mobile object M1 moves is from the right side of the vehicle 2 to the front.

Note that when a plurality of moving bodies are included in the angle of view of the first imaging unit, the movement direction determination unit 214 determines the direction in which a specific moving body moves among the plurality of moving bodies. A specific moving object is any of the following.
(b) the moving object closest to the first imaging unit;
(b) all of the plurality of mobile bodies;
(c) humans only;
(d) vehicles only;
(e) Humans and vehicles only;

When a plurality of moving bodies are included within the angle of view of the first imaging unit, the image analysis unit 216 generates moving body identification information indicating each of the plurality of moving bodies based on the result of identifying each of the plurality of moving bodies. do. In the moving body identification information, information for identifying the moving body is associated with information indicating the type of the moving body or the distance between the moving body and the first imaging unit.
The types of mobile objects are humans, vehicles, obstacles, and the like. Further, each human, vehicle, and obstacle type may be distinguished. For example, humans may be distinguished between adults and children. Vehicles may be distinguished as automobiles, two-wheeled vehicles, and the like.

Here, a method for the image analysis unit 216 to acquire the distance between the moving body and the first imaging unit will be described. For example, the image analysis unit 216 acquires the distance from a sensor mounted on the vehicle 2 . The sensor is, for example, LiDAR (Light Detection And Ranging).
The image analysis unit 216 may also calculate the distance by analyzing the image data supplied from the moving body determination unit 213 . The image analysis unit 216 may analyze image data based on machine learning, or may analyze image data based on image recognition technology such as template matching.

The moving direction determining unit 214 determines, from the moving object identification information supplied from the image analyzing unit 216, the moving object corresponding to the type of moving object used for determination or the moving object closest to the first photographing unit. The moving body identification information indicating the moving body is used for determining the moving direction of the moving body.

Returning to FIG. 5, the description of the photographing process is continued.
After completing the determination, the moving direction determination unit 214 supplies the acquired image data and the moving body identification information to the imaging range switching unit 215 . The acquired image data is either the front image data C1, the vehicle interior image data D1, or the rear image data E1.

Step S70: The imaging range switching unit 215 determines whether or not the moving object has moved outside the angle of view of the first imaging unit. Based on the image data supplied from the moving direction determination unit 214 and the information indicating the moving object, the imaging range switching unit 215, if the image indicated by the image data does not include the image of the moving object, It is determined that the moving object has moved out of the angle of view of the first photographing unit.

It should be noted that even if the imaging range switching unit 215 determines that the moving object has moved outside the angle of view of the first imaging unit when the image of the moving object has moved to a predetermined range within the image indicated by the image data, good. Depending on the performance and installation positions of the cameras included in the imaging unit 23, even if a moving object is included in the image of one camera, it may be better to capture the image with another camera. Such a case is, for example, a case in which only a part of a person's body is captured when photographing with a certain camera, but the whole body can be captured when photographing with another camera.

If the imaging range switching unit 215 determines that the moving object has moved outside the angle of view of the first imaging unit (step S70; YES), it executes the process of step S80. On the other hand, when the imaging range switching unit 215 determines that the moving object has not moved outside the angle of view of the first imaging unit (step S70; NO), the imaging control unit 210 executes the process of step S60 again. .

As described above, the process of step S60 is the process of determining the moving direction of the moving object included in the angle of view of the first imaging unit. When the moving object has not moved outside the angle of view of the first imaging unit, the moving direction of the moving object may change within the angle of view. When it is determined that the moving object has not moved outside the angle of view of the first photographing unit, the direction in which the moving object moves within the angle of view is changed by executing the process of step S60 again. Even if there is, the direction can be determined again.

Step S80: The imaging range switching unit 215 determines whether or not the moving object was last captured at the edge of the screen. The imaging range switching unit 215 determines whether or not the moving object was captured at the edge of the angle of view of the first imaging unit immediately before moving out of the angle of view of the first imaging unit.

Here, when the moving object moves outside the angle of view of the first imaging unit, when the moving object moves outside the imaging range of the first imaging unit, when the moving object moves within the imaging range of the first imaging unit In some cases, it is hidden behind an object and cannot be seen. When the moving object moves out of the imaging range of the first imaging unit, the moving object moves out of the angle of view of the first imaging unit after appearing at the edge of the screen. On the other hand, when the moving object is hidden behind the object within the imaging range of the first imaging unit and cannot be seen, the moving object moves outside the angle of view of the first imaging unit at a location other than the edge of the screen.

The edge of the screen (the angle of view of the first imaging unit) is at a predetermined distance from the boundary of the angle of view of the first imaging unit that corresponds to the direction in which the moving object moves as determined by the moving direction determining unit 214 . Inclusive range.

If the imaging range switching unit 215 determines that the last image of the moving object was at the edge of the screen (step S80; YES), the imaging range switching unit 215 executes the process of step S90. On the other hand, if the imaging range switching unit 215 determines that the last image of the moving object was not at the edge of the screen (step S80; NO), the imaging control unit 210 executes the process of step S50 again.

If the last image of the moving object was not at the edge of the screen, after the moving object was hidden behind the object within the imaging range of the first imaging unit and moved outside the angle of view of the first imaging unit, , the moving object may move back into the angle of view of the first imaging unit from behind the object.

Step S90: The photographing range switching unit 215 activates the second photographing unit capable of photographing the moving direction of the moving body. Based on the moving direction of the moving object determined by the moving direction determining unit 214, the imaging range switching unit 215 activates the second imaging unit capable of imaging the moving direction of the moving object among the plurality of imaging units. , to stop the photographing units other than the second photographing unit among the plurality of photographing units. The shooting range switching unit 215 selects the second shooting unit from among the plurality of shooting units based on the moving direction of the moving body and whether or not the shooting unit has a shooting range adjacent to the shooting range of the first shooting unit. Select the camera to start as.

The photographing range switching unit 215 selects, as the second photographing unit, the photographing unit having the photographing range in the moving direction of the moving object from among the photographing units having the photographing range adjacent to the photographing range of the first photographing unit. Here, the right end of the photographing range of the front photographing unit 230 (the end on the right side of the photographing range V1 of the forward photographing camera shown in FIG. 1) and the left end of the photographing range of the interior photographing unit 231 (interior photographing shown in FIG. It is adjacent to the right side end of the camera imaging range V2). The left end of the photographing range of the front photographing unit 230 (the left end of the photographing range V1 of the forward photographing camera shown in FIG. 1) and the right end of the photographing range of the interior photographing unit 231 (the photographing of the interior photographing camera shown in FIG. the left side edge of the range V2).

Step S100: The shooting range switching unit 215 stops the first shooting unit. After that, the shooting control unit 210 ends the shooting process.
With this, the imaging control unit 210 ends the imaging process.

Note that in the above-described imaging process, after the second imaging section is activated in step S90 and the first imaging section is stopped in step S100, the imaging control section 210 executes the imaging process shown in FIG. 5 again. In this case, the imaging control unit 210 performs the imaging process shown in FIG. 5 with the currently activated imaging unit (that is, the second imaging unit activated in immediately preceding step S90) as the first imaging unit.

As described above, the shooting range switching unit 215 performs a plurality of shooting operations based on the moving direction of the moving object determined by the moving direction determination unit 214 when the moving object moves outside the angle of view of the first imaging unit. A second photographing unit capable of photographing the direction in which the moving body moves is activated among the units, and the photographing units other than the second photographing unit are stopped among the plurality of photographing units.

Here, as an example, a case where the photographing range switching unit 215 activates the forward photographing unit 230 as the second photographing unit and stops the vehicle interior photographing unit 231 will be described. FIG. 7 shows a forward photographed image P2 as an example of an image photographed by the forward photographing section 230. As shown in FIG. In the front shot image P2, the mobile object M2 is moving forward on the right side of the vehicle 2. As shown in FIG. The mobile object M2 is the same person as the mobile object M1 included in the side shot image P1 shown in FIG.

As another example, a case where the imaging range switching unit 215 activates the rear imaging unit 232 as the second imaging unit and stops the in-vehicle imaging unit 231 will be described. FIG. 8 shows a rear photographed image P3 as an example of an image photographed by the rear photographing unit 232. As shown in FIG. In the rear shot image P3, the mobile object M3 is moving rearward on the right side of the vehicle 2 . The mobile object M3 is the same person as the mobile object M1 included in the side shot image P1 shown in FIG.

In the side shot image P1 shown in FIG. 6, when the moving body M1 moves backward and is no longer reflected in the side window of the rear seat, the photographing units to be activated are selected from the in-vehicle photographing unit 231 to the rear photographing unit. 232. In other words, the angle of view of the first photographing unit is the range included in the windows of the front seats and the rear seats in the case of the vehicle interior photographing unit 231 . Even if the rear glass is reflected in the side shot image captured by the in-vehicle imaging unit 231 and the moving object M1 is reflected in the rear glass, the moving object M1 is outside the angle of view of the first imaging unit.

(Modification 1)
FIG. 9 is a diagram showing an example of imaging processing according to Modification 1 of the present embodiment. In the above-described embodiment, the case where the first imaging unit is stopped when the moving object moves outside the angle of view of the first imaging unit has been described. In this modified example, a case will be described in which the first imaging unit is continuously activated for a predetermined period of time after the moving object moves out of the angle of view of the first imaging unit.
Note that the processes of steps S150, S160, S170, S180, S190, and S192 are the same as the processes of steps S50, S60, S70, S80, S90, and S100 in FIG. Since it is the same, the explanation is omitted.

Step S191: The imaging range switching unit 215 determines whether or not a predetermined time has passed since the first imaging unit was activated. The predetermined time is 10 seconds, for example.
If the photographing range switching unit 215 determines that the predetermined time has passed since the first photographing unit was activated (step S191; YES), it executes the process of step S192. On the other hand, if the photographing range switching unit 215 determines that the predetermined time has not passed since the first photographing unit was activated (step S191; NO), it executes the process of step S191 again.
With this, the imaging control unit 210 ends the imaging process.

As described above, in this modified example, the imaging range switching unit 215 continues to activate the first imaging unit for a predetermined time when the moving object moves outside the angle of view of the first imaging unit.

(Modification 2)
In Modification 1 described above, after the moving object moves outside the angle of view of the first imaging unit, the first imaging unit is continuously activated for a predetermined time (referred to as a second time in this modification). explained. In this modification, a case will be described in which the first imaging unit continues to be activated when a moving object is captured within a predetermined range within the angle of view of the second imaging unit for a predetermined time (referred to as the first time in this modification). do. In this modification, if the moving object is not captured within the predetermined range within the angle of view of the second imaging unit for the first time or longer, the first imaging unit is stopped even if the second time has not elapsed. FIG. 10 is a diagram showing an example of photographing processing according to this modification.
Note that the processes of steps S250, S260, S270, S280, S290, and S293 are the same as the processes of steps S150, S160, S170, S180, S190, and S192 in FIG. Since it is the same, the explanation is omitted.

Step S291: The imaging range switching unit 215 determines whether or not the moving object has been captured within a predetermined range within the angle of view of the second imaging unit for the first time or longer. The first time is a predetermined time, such as 5 seconds. The predetermined range within the angle of view of the second photographing unit is, for example, a range adjacent to the photographing range of the first photographing unit within the range included in the image photographed by the second photographing unit and having a predetermined size. is a range with

The predetermined size is, for example, the size obtained by dividing the image captured by the second capturing unit into N equal parts in the horizontal direction. Here, the number N is a natural number of 2 or more. In this case, the predetermined range within the angle of view of the second photographing unit is the portion closest to the photographing range of the first photographing unit among the portions obtained by horizontally dividing the image photographed by the second photographing unit into N equal parts. part. For example, when the image captured by the second imaging unit is divided into two equal parts, a left part and a right part are obtained. In this case, the predetermined range within the angle of view of the second photographing unit is the portion adjacent to the photographing range of the first photographing unit, out of the left and right portions.

Here, an example of the predetermined range within the angle of view of the second imaging unit will be described with reference to FIG. 11 . FIG. 11 shows a front captured image P4 as an example of an image represented by the front image data C1 captured by the front capturing section 230. As shown in FIG. The forward photographed image P4 is an image photographed by the forward photographing unit 230 when the photographing range switching unit 215 activates the forward photographing unit 230 as the second photographing unit, similarly to the forward photographing image P2 shown in FIG. be.

The image of the mobile object M4 is included in the range R1 of the front shot image P4. While the mobile object M2 shown in FIG. 7 is moving forward, the mobile object M4 is moving within the range R1. In other words, the moving object M4 remains in the range R1.
Range R1 is an example of a predetermined range within the angle of view of the second imaging unit. The range R1 is a range adjacent to the imaging range of the first imaging unit within the range included in the forward captured image P4. The size of the range R1 is a quarter of the size of the front shot image P4.

Returning to FIG. 10, the description of the photographing process is continued.
If the photographing range switching unit 215 determines that the moving object has been captured within the predetermined range within the angle of view of the second photographing unit for the first time period or longer (step S291; YES), the processing of step S292 is executed. On the other hand, when the imaging range switching unit 215 determines that the moving object has not been captured within the predetermined range within the angle of view of the second imaging unit for the first time or longer (step S291; NO), it executes the process of step S293. .

Step S292: The shooting range switching unit 215 determines whether or not the second time has passed since the first shooting unit was activated. The second time is the same time as the predetermined time in step S191 shown in FIG. Note that the length of the second time is equal to or greater than the length of the first time used for determination in step S291.

If the photographing range switching unit 215 determines that the second time has passed since the first photographing unit was activated (step S292; YES), it executes the process of step S293. On the other hand, if the photographing range switching unit 215 determines that the second time has not passed since the first photographing unit was activated (step S292; NO), it executes the process of step S291 again.
With this, the imaging control unit 210 ends the imaging process.

As described above, in this modified example, the imaging range switching unit 215 switches the moving object from within the angle of view of the first imaging unit to within the angle of view of the second imaging unit. When the moving object is captured within a predetermined range within the angle of view of for a first period of time or more, the first photographing unit continues to be activated until the second period of time elapses.

Note that in the photographing process shown in FIG. 10, the photographing range switching unit 215 performs the second photographing when the moving object moves from within the angle of view of the first photographing unit to within the angle of view of the second photographing unit. When the moving object is captured within a predetermined range within the angle of view of the part, the first imaging part may continue to be activated.

In that case, instead of the process of step S291, the imaging range switching unit 215 determines whether or not the moving object is captured within a predetermined range within the angle of view of the second imaging unit. If the imaging range switching unit 215 determines that the moving object is captured within the predetermined range within the angle of view of the second imaging unit, it determines whether the moving object is captured within the predetermined range within the angle of view of the second imaging unit. The process of determining whether or not is executed again. On the other hand, if the imaging range switching unit 215 determines that the moving object is not captured within the predetermined range within the angle of view of the second imaging unit, it executes the process of step S292. In other words, the imaging range switching unit 215 activates the first imaging unit while the moving object is captured within the predetermined range within the angle of view of the second imaging unit, regardless of whether or not the second time has elapsed. keep doing

Further, instead of the process of step S291, the imaging range switching unit 215 omits the process of step S292 when determining whether or not a moving object is captured within a predetermined range within the angle of view of the second imaging unit. Then, the process of step S293 may be executed. In other words, the imaging range switching unit 215 immediately stops the first imaging unit when the moving object is not captured within the predetermined range within the angle of view of the second imaging unit.
Further, in the photographing process shown in FIG. 10, the process of step S292 may be omitted. In other words, the imaging range switching unit 215 immediately stops the first imaging unit when the moving object is not captured within the predetermined range within the angle of view of the second imaging unit for the first time or longer.

9, the first time in the process of step S291 shown in FIG. 10, or the second time in step S293 shown in FIG. For one or more of the second times in the process, the length of time may be set according to the type of mobile object.

It should be noted that in the above-described embodiment and modification, an example in which the activation unit 212 activates one of the plurality of imaging units as the first imaging unit according to the direction of impact indicated by the impact detection data A1 is described. Illustrated, but not limited to.
When the acceleration sensor 10 detects an impact, the activating unit 212 may activate two or more of the plurality of imaging units as the first imaging unit according to the direction of the impact.

Further, when the acceleration sensor 10 detects an impact, the activation unit 212 may activate one or more of the plurality of imaging units as the first imaging unit regardless of the direction of the impact. For example, the activation unit 212 may activate two of the plurality of imaging units when the acceleration sensor 10 detects an impact.
When one or more of the plurality of photographing units is activated as the first photographing unit regardless of the direction of the impact, the activating unit 212 selects one or more photographing units that include a moving object within the angle of view from among the plurality of photographing units that have been activated. continue to activate the image capturing unit, and stop the image capturing unit that does not include the moving object within the angle of view.

For example, when the activation unit 212 activates a plurality of imaging units as the first imaging units, the activation unit 212 causes the image analysis unit 216 to perform image analysis on images captured by each of the plurality of first imaging units. The image analysis unit 216 identifies each image of the moving object included in the images captured by each of the plurality of first imaging units. Based on the moving object identification information generated by the image analysis unit 216, the activation unit 212 selects any one of the activated first imaging units that has captured an image containing an image of the moving object. keep running. On the other hand, the activation unit 212 deactivates other first imaging units among the plurality of activated first imaging units.

As described above, the activation unit 212 activates the first imaging unit among the plurality of imaging units when the acceleration sensor 10 detects an impact. Therefore, in the drive recorder 1, it is possible to limit the number of photographing units that are activated at the same time among the plurality of photographing units.

Note that the shooting control unit may be provided in a shooting device other than the drive recorder. For example, the imaging control unit may be provided in a computer of a monitoring system for monitoring a parking lot. The monitoring system includes a plurality of monitoring cameras and one or more sensors at predetermined positions in the parking lot. A plurality of monitoring cameras respectively capture a plurality of different ranges. Each of the one or more sensors detects an impact caused by a mobile object entering the parking lot or moving in the parking lot. In this monitoring system, when an impact is detected by one or more sensors, the imaging control unit activates one or more of the plurality of monitoring cameras according to the direction of the impact.

As described above, the photographing device according to this embodiment (the drive recorder 1 in this embodiment) includes a plurality of photographing units (in this embodiment, the front photographing unit 230, the vehicle interior photographing unit 231, and the rear photographing unit 232), a movement direction determination unit 214, an imaging range switching unit 215, and an image analysis unit 216.
When the acceleration sensor 10 detects an impact, the activation unit 212 activates the first imaging unit among the plurality of imaging units (in this embodiment, the front imaging unit 230, the vehicle interior imaging unit 231, and the rear imaging unit 232).
The movement direction determination unit 214 determines the direction in which the moving object included in the angle of view of the first imaging unit activated by the activation unit 212 moves.
Based on the moving direction of the moving object determined by the moving direction determining unit 214, the imaging range switching unit 215 switches between the plurality of imaging units (this embodiment) when the moving object moves outside the angle of view of the first imaging unit. , the second photographing unit capable of photographing the moving direction of the moving body is activated among the forward photographing unit 230, the vehicle interior photographing unit 231, and the rearward photographing unit 232, and a plurality of photographing units (in this embodiment, forward photographing 230, in-vehicle photographing unit 231, and rear photographing unit 232), the photographing units other than the second photographing unit are stopped.

With this configuration, the image capturing apparatus according to the present embodiment can capture images of a moving object by specifying an image capturing unit capable of capturing an image of the moving object without activating all the image capturing units. power consumption can be reduced while maintaining

Here, conventional drive recorders are required to reduce the size of the housing. If the size of the housing is large, it may obstruct the driver's view, for example. If a battery is built into the drive recorder for mounting the parking monitoring function, a lithium-ion battery or the like with high energy density is conceivable in order to downsize the housing of the drive recorder. Lithium-ion batteries are difficult to use because they can explode when used in cars where temperatures tend to be high. Therefore, in order to give priority to safety, it is desirable to use, for example, a nickel metal hydride battery. However, since the nickel-metal hydride battery has a low energy density, the size of the case of the drive recorder tends to be large.

In order to reduce the size of the housing while ensuring safety, the power consumption required for parking monitoring must be suppressed as much as possible. On the other hand, if you try to shoot all directions of the vehicle to eliminate blind spots in order to keep the necessary images, you will need to install multiple cameras, which will increase power consumption.
As described above, the imaging device according to the present embodiment (in this embodiment, the drive recorder 1) can save power consumption while leaving images necessary for monitoring.

Further, in the drive recorder 1 according to the present embodiment, the activation unit 212 includes a plurality of photographing units (the forward photographing unit 230 in the present embodiment) according to the direction of the impact detected by the acceleration sensor 10. , in-vehicle imaging unit 231, and rear imaging unit 232).

With this configuration, the image capturing apparatus according to the present embodiment can activate only the first image capturing unit according to the direction of the impact among the plurality of image capturing units. As compared with the case where the shooting units are activated at the same time, it is possible to reduce power consumption while keeping the images necessary for monitoring.

Further, in the present embodiment (the drive recorder 1 in the present embodiment), when a plurality of moving bodies are included in the angle of view of the first photographing section, the moving direction determination unit 214 Among them, the direction in which a specific moving object moves is determined.

With this configuration, the photographing apparatus according to the present embodiment can determine the direction in which the object required for monitoring moves when a plurality of moving objects are included in the angle of view of the first photographing unit. Therefore, it is possible to prevent unnecessary objects from being photographed.

Further, according to the present embodiment (the drive recorder 1 in the present embodiment), the photographing range switching unit 215 switches the moving object to the outside of the angle of view of the first photographing unit for a predetermined period of time ( , second time) continues to activate the first imaging unit.
With this configuration, the photographing apparatus according to the present embodiment puts the first photographing unit in an activated state when the moving object moves out of the angle of view and then returns within the angle of view within a predetermined period of time. Therefore, an unnecessary increase in power consumption due to repeated activation and deactivation of the imaging unit can be suppressed. Depending on the configuration of the imaging unit, power consumption may be lower if the power is continuously activated than if the power is repeatedly turned on and off.

Further, according to the present embodiment (the drive recorder 1 in the present embodiment), the photographing range switching unit 215 changes when the moving object moves from within the angle of view of the first photographing unit to within the angle of view of the second photographing unit. In addition, when the moving object is captured within a predetermined range within the angle of view of the second photographing unit for a predetermined time (in this embodiment, the first time) or more, the first photographing unit continues to be activated.
With this configuration, the photographing apparatus according to the present embodiment can move the moving object within the angle of view again after a predetermined time (the second time in the present embodiment) has elapsed after the moving object has moved outside the angle of view. When the moving object returns to the angle of view, the first imaging unit can be put into a state of being activated. Even in the case of returning, it is possible to suppress an unnecessary increase in power consumption caused by repeating the start and stop of the imaging unit.

A part of the drive recorder 1 in the above-described embodiment, for example, the shooting control unit 210 may be realized by a computer. In that case, a program for realizing this control function may be recorded in a computer-readable recording medium, and the program recorded in this recording medium may be read into a computer system and executed. The "computer system" referred to here is a computer system built into the drive recorder 1, and includes hardware such as an OS and peripheral devices. The term "computer-readable recording medium" refers to portable media such as flexible discs, magneto-optical discs, ROMs and CD-ROMs, and storage devices such as hard discs incorporated in computer systems. Furthermore, "computer-readable recording medium" means a medium that dynamically stores a program for a short period of time, such as a communication line for transmitting a program via a network such as the Internet or a communication line such as a telephone line. It may also include a volatile memory inside a computer system that serves as a server or client in that case, which holds the program for a certain period of time. Further, the program may be for realizing part of the functions described above, or may be capable of realizing the functions described above in combination with a program already recorded in the computer system.
Also, part or all of the drive recorder 1 in the above-described embodiment may be implemented as an integrated circuit such as an LSI (Large Scale Integration). Each functional block of the drive recorder 1 may be individually processorized, or part or all may be integrated and processorized. Also, the method of circuit integration is not limited to LSI, but may be realized by a dedicated circuit or a general-purpose processor. In addition, when an integration circuit technology that replaces LSI appears due to advances in semiconductor technology, an integrated circuit based on this technology may be used.

Although one embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to the above, and various design changes, etc., can be made without departing from the gist of the present invention. It is possible to

REFERENCE SIGNS LIST 1 drive recorder 230 front imaging unit 231 in-vehicle imaging unit 232 rear imaging unit 214 movement direction determination unit 215 imaging range switching unit 216 image analysis unit 10 acceleration sensor

Claims (6)

a plurality of imaging units;
an activation unit that activates a first imaging unit among the plurality of imaging units when the acceleration sensor detects an impact;
a movement direction determination unit that determines a moving direction of a moving object included in the angle of view of the first imaging unit activated by the activation unit;
When the moving object moves out of the angle of view of the first imaging unit based on the moving direction of the moving object determined by the moving direction determining unit, the moving object among the plurality of imaging units moves. a photographing range switching unit that activates a second photographing unit capable of photographing the direction in which the photographing unit is directed, and stops photographing units other than the second photographing unit among the plurality of photographing units;
A photographing device comprising a The photographing device according to claim 1, wherein the activation unit activates the first photographing unit among the plurality of photographing units according to the direction of impact detected by the acceleration sensor. 2. When a plurality of said moving bodies are included in an angle of view of said first photographing part, said movement direction determining section determines a direction in which a specific said moving body among said plurality of said moving bodies moves. Or the imaging device according to claim 2 . 4. The photographing range switching unit according to any one of claims 1 to 3, wherein when the moving object moves outside the angle of view of the first photographing unit, the photographing range switching unit continues to activate the first photographing unit for a predetermined time. The photographing device described in . The photographing range switching unit is configured to change a predetermined range within the angle of view of the second photographing unit when the moving object moves from within the angle of view of the first photographing unit to within the angle of view of the second photographing unit. 5. The photographing device according to claim 4, wherein the first photographing unit continues to be activated when the moving object is captured within the range for a predetermined time or longer. In the computer of the imaging device equipped with a plurality of imaging units,
an activation step of activating a first imaging unit among the plurality of imaging units when the acceleration sensor detects an impact;
a movement direction determination step for determining a moving direction of a moving object included in the angle of view of the first imaging unit activated by the activation step;
When the moving body moves out of the angle of view of the first imaging part based on the moving direction of the moving body determined by the moving direction determining step, the moving body among the plurality of imaging parts moves. a photographing range switching step of activating a second photographing unit capable of photographing in the direction indicated by the photographing unit, and stopping photographing units other than the second photographing unit among the plurality of photographing units;
program to run the

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