WO2014167793A1

WO2014167793A1 - Vehicle outside image saving device, and portable terminal with imaging function

Info

Publication number: WO2014167793A1
Application number: PCT/JP2014/001740
Authority: WO
Inventors: 貴久山城; 正剛隈部
Original assignee: 株式会社デンソー
Priority date: 2013-04-09
Filing date: 2014-03-26
Publication date: 2014-10-16
Also published as: JP2014203400A

Abstract

A vehicle outside image saving device (1) used in a vehicle is provided with: a vehicle outside image imaging unit (25) that images a vehicle outside image in the vicinity of a vehicle; a save process unit (290) that saves the vehicle outside image imaged by the vehicle outside image imaging unit; a reception unit (333) that receives vehicle outside information transmitted from an external communication device, which is a communication device outside the vehicle, via wireless communication; and a save determination unit (289) that determines whether the timing is right for saving the vehicle outside image on the basis of the vehicle outside information received by the reception unit. When it is determined by the save determination unit that the timing is right for saving the vehicle outside image, the save process unit saves the vehicle outside image in the vicinity of the vehicle imaged by the vehicle outside image imaging unit.

Description

Outside image storage device and portable terminal with imaging function

Cross-reference of related applications

This disclosure is based on Japanese Patent Application No. 2013-81532 filed on April 9, 2013, the contents of which are incorporated herein.

The present disclosure relates to a vehicle outside image storage device that captures and stores a vehicle outside image around the vehicle, and a mobile terminal with an imaging function included in the vehicle outside image storage device.

Conventionally, as disclosed in Patent Document 1, when a deceleration greater than a threshold value is generated in the host vehicle, an image outside the vehicle in front of the host vehicle captured by a camera inside the host vehicle is stored in a recording device. Thus, a technique for storing images outside the vehicle before and after the driver notices a failure and steps on the brake is known.

JP 2008-158987 A

However, with the technique disclosed in Patent Document 1, an image outside the vehicle is not stored in the recording device unless a deceleration exceeding a threshold value occurs in the own vehicle. Therefore, there is a problem that images outside the vehicle cannot be stored when the driver is unaware of the obstacle, such as the driver of the own vehicle avoiding the obstacle without noticing the obstacle.

The present disclosure has been made in view of the above-described conventional problems, and an object of the present disclosure is to make it possible to save an image outside the vehicle around the vehicle when the driver of the vehicle is unaware of the obstacle. An object is to provide an image storage device and a portable terminal with an imaging function.

A vehicle exterior image storage device according to a first aspect of the present disclosure is used in a vehicle, and includes an exterior vehicle image capturing unit that captures an exterior vehicle image around the vehicle, and a storage processing unit that stores an exterior vehicle image captured by the exterior vehicle image capturing unit. A reception unit that receives information outside the vehicle that is transmitted by wireless communication from an external communication device that is a communication device outside the vehicle, and a timing for storing an image outside the vehicle based on the information outside the vehicle received by the reception unit. A storage determination unit that determines whether or not, and when the storage determination unit determines that it is time to store the vehicle exterior image, the storage processing unit stores the vehicle exterior image captured by the vehicle exterior image capturing unit. .

According to this, it is determined by the storage determination unit based on the information outside the vehicle transmitted from the external communication device whether or not it is the timing to store the vehicle outside image captured by the vehicle outside image capturing unit by the storage processing unit. As a result, the timing for storing the image outside the vehicle is not determined depending only on the driving situation of the host vehicle. Therefore, even when the driver is unaware of the obstacle and the driving state of the vehicle has not changed, it can be determined that the timing to save the image outside the vehicle is based on the information outside the vehicle. Become. As a result, it is possible to save an image outside the vehicle around the vehicle when the driver of the vehicle is unaware of the obstacle. The obstacle is, for example, an obstacle such as another vehicle or a pedestrian, a regulation of a red light, or the like.

Moreover, the mobile terminal with an imaging function according to the second aspect of the present disclosure includes at least the above-described vehicle image capturing unit, a storage processing unit, and a storage determination unit. Therefore, it is also possible to save an image outside the vehicle around the vehicle when the driver of the vehicle is unaware of the obstacle.

The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings. The drawing
1 is a diagram illustrating an example of a schematic configuration of a drive recorder system 100. FIG. 2 is a diagram illustrating an example of a schematic configuration of a drive recorder unit 1. FIG. 3 is a functional block diagram illustrating an example of a schematic configuration of a portable side control unit 28 according to Embodiment 1. FIG. 3 is a functional block diagram illustrating an example of a schematic configuration of a communication device side control unit 33. FIG. It is a flowchart which shows an example of the flow of the vehicle information transmission related process in the communication apparatus side control part 33. FIG. 6 is a flowchart illustrating an example of a flow of processing related to image storage outside a vehicle in a mobile-side control unit according to the first embodiment. 5 is a flowchart illustrating an example of a flow of an automatic display related process in a portable side control unit. 12 is a schematic diagram illustrating a display example of an image outside the vehicle on the display unit 27. FIG. 6 is a functional block diagram illustrating an example of a schematic configuration of a portable control unit 28 according to Embodiment 2. FIG. 12 is a flowchart illustrating an example of a flow of processing related to image storage outside a vehicle in the mobile-side control unit according to the second embodiment. It is a figure which shows an example of a schematic structure of the drive recorder system 100a. FIG. 10 is a functional block diagram illustrating an example of a schematic configuration of a portable side control unit according to a third embodiment. 14 is a flowchart illustrating an example of a flow of processing related to image storage outside a vehicle in the mobile-side control unit according to the third embodiment.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram illustrating an example of a schematic configuration of a drive recorder system 100 to which the present disclosure is applied. A drive recorder system 100 shown in FIG. 1 includes a drive recorder unit 1 that is used one by one in each of a plurality of vehicles (vehicles A and B). The drive recorder unit 1 corresponds to the outside image storage device of the claims.

Here, a schematic configuration of the drive recorder unit 1 will be described with reference to FIG. FIG. 2 is a diagram illustrating an example of a schematic configuration of the drive recorder unit 1. As shown in FIG. 2, the drive recorder unit 1 includes a portable terminal 2 with an imaging function and a communication device 3.

The mobile terminal 2 with an imaging function captures an image in a predetermined range outside the host vehicle (hereinafter, an image outside the vehicle). The mobile terminal 2 with an imaging function may be configured to use a multi-function mobile phone such as a smartphone with a camera. As an example, the mobile terminal 2 with an imaging function is temporarily fixed in the vehicle interior so as to face a direction in which an image in front of the host vehicle through the windshield can be captured.

The mobile terminal 2 with an imaging function includes a mobile side Bluetooth (registered trademark, hereinafter referred to as BT) communication unit 21, a position detector 22, an imaging unit 25, a storage memory 26, a display unit 27, and a mobile side control unit 28. .

The portable-side BT communication unit 21 includes a transmission / reception antenna, and exchanges information with the communication device 3 of the own vehicle by performing communication according to the Bluetooth standard (hereinafter referred to as BT communication).

In addition, in this embodiment, although the structure which performs communication between the portable terminal 2 with an imaging function and the communication apparatus 3 by BT communication was shown, it does not necessarily restrict to this. For example, it may be configured to perform wireless communication according to short-range wireless communication standards such as ZigBee (registered trademark) or wireless LAN standards such as IEEE 802.11, or may be configured to perform wired communication such as USB communication.

The position detector 22 is based on information obtained from a sensor such as a GPS receiver 24 for GPS (global positioning system) that detects the current position of the terminal (hereinafter referred to as terminal position) based on radio waves from the artificial satellite. In addition, the terminal position is sequentially detected. Note that a sensor other than the GPS receiver 24 may be used. Further, the terminal position is represented by latitude and longitude, for example.

The imaging unit 25 is a color camera having a photographing lens on the front and back surfaces of the mobile terminal 2 with an imaging function. The imaging unit 25 corresponds to an outside-image imaging unit in claims. The imaging unit 25 sequentially captures images in a predetermined range in the direction in which the imaging lens faces. As described above, when the mobile terminal 2 with an imaging function faces a direction in which an image in front of the host vehicle can be captured through the windshield, the imaging unit 25 sequentially captures images outside the vehicle in front of the host vehicle. become. The imaging unit 25 may have a configuration using a CMOS camera or a configuration using a CCD camera. For example, a wide-angle lens may be used as the photographing lens.

The storage memory 26 is an electrically rewritable nonvolatile memory for storing an image outside the vehicle captured by the imaging unit 25. The storage memory 26 may be a storage medium that is removable from the portable terminal 2 with an imaging function, such as an SD card. The storage memory 26 is a memory having a longer time for maintaining the recording of the image outside the vehicle than the image temporary storage unit 285 described later. For example, the storage memory 26 may have a configuration in which the stored outside image is not deleted unless a deletion instruction is given by a user operation via an operation input unit (not shown) of the mobile terminal 2 with an imaging function.

The display unit 27 is configured using a liquid crystal display, an organic EL display, or the like, and displays text and images in accordance with instructions from the portable control unit 28.

The portable-side control unit 28 is configured as a normal computer, and includes a well-known CPU, a memory such as a ROM, a RAM, and an EEPROM, an I / O, and a bus line for connecting these configurations (all not shown). Etc.). The portable side control unit 28 performs various processes by the CPU executing a program stored in advance in the ROM based on various types of information input from the portable side BT communication unit 21, the position detector 22, and the imaging unit 25. Execute.

As shown in FIG. 3, the mobile-side control unit 28 includes, as functional blocks, a terminal sensor information acquisition unit 281, a sensor information storage unit 282, a terminal sensor information transmission unit 283, a vehicle exterior image acquisition unit 284, an image temporary storage unit 285, A transfer information reception unit 286, a potting estimation unit 287, a TTC calculation unit 288, a storage determination unit 289, a storage processing unit 290, a parking detection unit 291, a selection unit 292, and a display processing unit 293 are provided. It is assumed that the sensor information storage unit 282 and the image temporary storage unit 285 are constructed in an electrically rewritable memory such as a RAM or an EEPROM. Here, for the sake of convenience, among the configurations related to the functions of a general multi-function mobile phone, those that are not necessary for the description of the present disclosure are omitted.

The terminal sensor information acquisition unit 281 stores terminal sensor information such as terminal positions sequentially detected by the position detector 22 in the sensor information storage unit 282. When the terminal sensor information is stored in the sensor information storage unit 282, time information (that is, a time stamp) when each terminal sensor information is detected is linked and stored. Further, the sensor information storage unit 282 may be configured to erase older information in order when the allocated memory capacity is exceeded. In addition, it is good also as a structure which deletes the terminal sensor information which passed for a fixed time since memorize | stored.

When the terminal sensor information transmission unit 283 receives an acquisition request for terminal sensor information from the communication device 3 of the own vehicle via the portable-side BT communication unit 21, the terminal sensor information transmission unit 283 stores a plurality of times stored in the sensor information storage unit 282. Read terminal sensor information along with time stamp. Then, the read terminal sensor information and time stamp are transmitted to the communication device 3 via the portable-side BT communication unit 21. As an example, the aforementioned terminal positions and their time stamps are transmitted. Note that the terminal position may be read multiple times.

The outside image acquisition unit 284 acquires the outside image sequentially captured by the imaging unit 25 and stores it in the image temporary storage unit 285. In the case where an image outside the vehicle is stored in the image temporary storage unit 285, the time stamp when the image outside the vehicle is captured is linked and temporarily stored. In addition, the temporary image storage unit 285 may be configured so that older images outside the vehicle are sequentially deleted when the allocated memory capacity is exceeded. In addition, a configuration may be adopted in which images outside the vehicle that have been stored for a certain period of time are deleted.

In the present embodiment, the configuration in which the image temporary storage unit 285 is built in the memory of the portable control unit 28 is shown, but the present invention is not necessarily limited thereto. For example, the image temporary storage unit 285 may be configured in a memory of the mobile terminal 2 with an imaging function other than the memory of the mobile side control unit 28.

The transfer information receiving unit 286 receives vehicle information (described later) received by the communication device 3 of the own vehicle from the communication device 3 of the other vehicle via the portable BT communication unit 21. The communication device 3 of the other vehicle corresponds to the external communication device in the claims. The potting estimation unit 287, the TTC calculation unit 288, the storage determination unit 289, the storage processing unit 290, the parking detection unit 291, the selection unit 292, and the display processing unit 293 will be described in detail later.

2, the communication device 3 transmits and receives information to and from the communication device 3 of another vehicle by wireless communication. The communication device 3 is not limited to the configuration mounted on the vehicle, and may be configured such that what can be carried by the user (that is, a person) is brought into the vehicle, or is configured to be carried by the user outside the vehicle. May be. That is, the present disclosure is applicable not only to inter-vehicle communication but also to inter-vehicle communication. The communication device 3 includes a communication device side BT communication unit 31, an out-of-vehicle communication unit 32, and a communication device side control unit 33.

The communication device side BT communication unit 31 includes a transmission / reception antenna, and exchanges information by performing BT communication with the mobile terminal 2 with an imaging function of the own vehicle.

The outside-vehicle communication unit 32 includes a transmission / reception antenna and transmits / receives information to / from the communication device 3 of another vehicle by, for example, broadcast-type wireless communication without using a communication network. In the case of wireless communication using 700 MHz band radio waves, vehicle-to-vehicle communication is performed with the communication device 3 of another vehicle existing in a radius range of about 1 km, for example, centered on the own vehicle position, and 5.9 GHz band. In the case of wireless communication using the radio wave, vehicle-to-vehicle communication is performed with the communication device 3 of another vehicle existing in a range of, for example, a radius of about 500 m around the vehicle position. The vehicle exterior communication unit 32 transmits information at a transmission cycle in accordance with an instruction from the communication device side control unit 33.

The communicator-side control unit 33 is configured as a normal computer, and includes a well-known CPU, a memory such as a ROM, a RAM, and an EEPROM, an I / O, and a bus line for connecting these configurations (both shown in the figure). (Not shown). The communicator-side control unit 33 executes various processes based on various information input from the communicator-side BT communication unit 31 and the out-of-vehicle communication unit 32, by the CPU executing a program stored in advance in the ROM. .

As shown in FIG. 4, the communicator-side control unit 33 includes a terminal sensor information reception unit 331, a vehicle information transmission unit 332, a vehicle information reception unit 333, and a vehicle information transfer unit 334 as functional blocks.

The terminal sensor information receiving unit 331 receives the terminal sensor information transmitted from the mobile terminal 2 with the imaging function via the communication device side BT communication unit 31. The vehicle information transmission unit 332 generates vehicle information of the host vehicle from the terminal sensor information received by the terminal sensor information reception unit 331, and transmits the generated vehicle information via the external communication unit 32.

The vehicle information receiving unit 333 receives the above-described vehicle information transmitted from the communication device 3 of the other vehicle via the vehicle outside communication unit 32. Therefore, the vehicle information receiving unit 333 corresponds to the receiving unit of the claims. The vehicle information transfer unit 334 transmits the vehicle information received by the vehicle information reception unit 333 to the mobile terminal 2 with the imaging function of the own vehicle via the communication device side BT communication unit 31.

Here, a process related to the transmission of vehicle information in the communication device side control unit 33 of the communication device 3 (hereinafter, vehicle information transmission related processing) will be described using the flowchart of FIG. The flowchart in FIG. 5 may be configured to start when the power of the communication device 3 is turned on.

First, in step S1, the terminal sensor information reception unit 331 performs terminal sensor information reception processing, and proceeds to step S2. In the terminal sensor information reception process, an acquisition request for terminal sensor information is transmitted to the mobile terminal 2 with an imaging function via the communication device side BT communication unit 31, and is returned from the mobile terminal 2 with an imaging function in response to the acquisition request. The incoming terminal sensor information is received via the communication device side BT communication unit 31.

Note that the terminal sensor information acquisition request is transmitted from the communication device 3 to the mobile terminal 2 with the imaging function, and the terminal sensor information receiving unit 331 receives the terminal sensor information returned in response to the acquisition request. Absent. For example, the latest terminal sensor information stored in the sensor information storage unit 282 is transmitted at regular intervals from the mobile terminal 2 with an imaging function, and the terminal sensor information reception unit 331 sequentially receives the transmitted terminal sensor information. It is good also as composition to do.

In step S2, the vehicle information transmission unit 332 performs transmission vehicle information generation processing, and proceeds to step S3. In the transmission vehicle information generation process, vehicle information to be transmitted by inter-vehicle communication is generated from the terminal sensor information received by the terminal sensor information reception unit 331.

In the transmission vehicle information generation process, vehicle information is generated with the terminal position as the vehicle position of the host vehicle. In the transmission vehicle information generation process, the direction and speed of the own vehicle may be generated as vehicle information.

As for the direction of the own vehicle, vehicle information is generated with the direction in which the approximate line obtained by the least square method extends from a plurality of terminal positions arranged in time series as the direction of the own vehicle (that is, the traveling direction). Here, although the structure which calculates | requires the azimuth | direction of the own vehicle from a terminal position was shown, it does not necessarily restrict to this. For example, if the mobile terminal 2 with an imaging function includes a geomagnetic sensor and the detection result of the geomagnetic sensor can be used, the configuration of obtaining the direction of the vehicle using the detection result of the geomagnetic sensor is used. Good.

Regarding the vehicle speed of the host vehicle, the travel distance per unit time of the host vehicle using the host terminal is obtained from a plurality of terminal positions arranged in time series, and the travel distance per unit time is calculated as the vehicle speed.

In the present embodiment, the configuration in which the vehicle information is generated from the terminal sensor information obtained from the mobile terminal 2 with the imaging function is shown, but the present invention is not necessarily limited thereto. For example, when the communication device 3 includes at least a receiver of a satellite positioning system such as the GPS receiver 24, the vehicle information is generated from the position of the communication device 3 of the own vehicle that can be detected using this receiver. It is good. In this case, the direction of the host vehicle and the vehicle speed of the host vehicle may be calculated from the position of the communication device 3 of the host vehicle by using a method similar to the above-described method of calculating from the terminal position.

In step S3, the vehicle information transmission unit 332 performs a vehicle information transmission process, and proceeds to step S4. In the vehicle information transmission process, the vehicle information generated in the transmission vehicle information generation process is transmitted via the outside communication unit 32. Transmission of vehicle information shall be performed according to the transmission period of the vehicle-to-vehicle communication in the communication apparatus 3, such as every 100 msec.

The vehicle information transmitted in the vehicle information transmission process includes the vehicle position of the own vehicle, the vehicle speed of the own vehicle, the direction of the own vehicle, these time stamps, and identification information for specifying the transmission source vehicle. As identification information, vehicle ID for specifying the own vehicle and apparatus ID for specifying the communication device 3 of the own vehicle can be used.

In step S4, when it is the end timing of the vehicle information transmission related process (YES in step S4), the flow is ended. On the other hand, if it is not the end timing of the vehicle information transmission related process (NO in step S4), the process returns to step S1 to repeat the flow. An example of the end timing of the vehicle information transmission related process is when the power of the communication device 3 is turned off.

Next, with reference to the flowchart of FIG. 6, a description is given of processing related to storage of images outside the vehicle in the mobile-side control unit 28 of the mobile terminal 2 with an imaging function of the drive recorder unit 1 (hereinafter referred to as processing related to image storage outside the vehicle). I do.

The flowchart of FIG. 6 shows vehicle information received by the communication device 3 of the own vehicle from the communication device 3 of the other vehicle in a state where an application program (hereinafter referred to as a drive recorder application) for saving an image outside the vehicle is activated. The configuration may be started when it is received via the mobile-side BT communication unit 21. The drive recorder application may be configured to be activated by a user operation on an operation input unit (not shown) of the mobile terminal 2 with an imaging function. The vehicle information received from the communication device 3 of the other vehicle corresponds to the information outside the own vehicle in the claims.

First, in step S21, the potting estimation unit 287 performs potting estimation processing, and proceeds to step S22. In the potting estimation process, the presence / absence of matching between the own vehicle and the other vehicle is estimated from the vehicle position and direction of the other vehicle received from the communication device 3 of the other vehicle and the vehicle position and direction of the own vehicle.

As the vehicle position of the own vehicle used in the potting estimation process, the time stamp of the vehicle position of the other vehicle received from the communication device 3 of the other vehicle among the terminal positions accumulated in the sensor information accumulation unit 282 of the own terminal is the most. What is necessary is just to set it as the structure which reads and uses the terminal position to which the time stamp with the near time was provided.

Also, the orientation of the vehicle used in the potting estimation process may be obtained as follows. First, among the terminal positions stored in the sensor information storage unit 282 of the own terminal, in a time series in which a time stamp that is closer to the time is given by the time stamp of the vehicle position of the other vehicle received from the communication device 3 of the other vehicle. Read the terminal position of multiple points in line. And the direction where the approximate line calculated | required by the least squares method from the terminal position of several points read out is acquired as a bearing of the own vehicle.

As an example, it may be configured to estimate whether there is a matching between the own vehicle and another vehicle as follows. First, in a two-dimensional coordinate system in which the latitude and longitude are the y-coordinate and the x-coordinate, respectively, the straight line extending from the vehicle position of the vehicle to the direction of the vehicle is used as the predicted locus of the vehicle, and the vehicle position of the other vehicle is used as the starting point. A straight line extending in the direction of the other vehicle is taken as the expected trajectory of the other vehicle. And it is calculated | required by calculation whether an intersection (henceforth, a matching point) arises in these prediction locus | trajectories. If a potting point occurs, it is estimated that there is a potting match between the own vehicle and the other vehicle, and if no potting point occurs, it is estimated that there is no potting match between the own vehicle and the other car.

In step S22, when it is estimated that there is a matching between the own vehicle and another vehicle in the matching determination process (YES in step S22), the process proceeds to step S23. On the other hand, when it is estimated that there is no matching between the own vehicle and the other vehicle (NO in step S22), the process proceeds to step S26.

In step S23, the TTC calculation unit 288 performs TTC calculation processing, and proceeds to step S24. In the TTC calculation process, the expected matching time with the other vehicle of the own vehicle (hereinafter referred to as TTC) is calculated. The TTC may be calculated as follows. First, the distance (hereinafter referred to as the potting distance) between the above-described potting intersection and the vehicle position of the own vehicle obtained by the potting estimation process is calculated. Then, by dividing the calculated potting distance by the vehicle speed of the own vehicle, TTC, which is the remaining time until the own car reaches the potting intersection, is calculated.

In step S24, if the TTC calculated in the TTC calculation process is equal to or less than the threshold (YES in step S24), the process proceeds to step S25. On the other hand, when the TTC calculated in the TTC calculation process is larger than the threshold (NO in step S24), the process proceeds to step S26. The threshold here is a value that can be arbitrarily set, and is estimated to start a braking operation for avoiding contact with the other vehicle when the driver of the own vehicle is aware of the other vehicle. The TTC value may be a certain level.

In step S25, the storage determining unit 289 determines the timing for storing the outside-vehicle image (hereinafter referred to as storage timing), and proceeds to step S26. In step S26, the storage determination unit 289 determines that it is not the storage timing, and ends the flow without performing the storage process described later.

In step S27, the storage processing unit 290 performs a storage process and ends the flow. In the saving process, the outside image and its time stamp within a predetermined time before and after the time point when the saving judgment unit 289 determines the saving timing are read from the image temporary storage unit 285 and saved in the saving memory 26.

It should be noted that, within the predetermined time before and after the time indicated by the time stamp of the vehicle information of the other vehicle used by the storage determining unit 289 to determine the storage timing, not the time when the storage determining unit 289 determines the storage timing. It is good also as a structure which preserve | saves an image outside a vehicle and its time stamp. Further, the configuration may be such that only the image outside the vehicle within a predetermined time before the starting point and the time stamp thereof are stored. Hereinafter, the above-mentioned images outside the vehicle for a predetermined time are set as images outside the vehicle for one set with respect to the storage timing at which the images outside the vehicle are determined to be stored.

In the saving process, in addition to the outside image read from the image temporary storage unit 285 and its time stamp, the terminal sensor information of the own vehicle and the vehicle information of the other vehicle received from the communication device 3 of the other vehicle are linked. It is preferable to store in the storage memory 26 (that is, in association with each other).

The terminal sensor information of the own vehicle and the vehicle information of the other vehicle linked to the image outside the vehicle and the time stamp thereof may be information used by the storage determination unit 289 to determine the storage timing. In addition, the terminal sensor information of the own vehicle and the vehicle information of other vehicles corresponding to each of the images outside the vehicle for one set to be stored may be linked and stored in the storage memory 26. For example, the terminal sensor information of the own vehicle and the vehicle information of other vehicles corresponding to each of the images outside the vehicle for one set are given a time stamp that is closest to the time stamp of each vehicle outside image for one set. It is terminal sensor information of the own vehicle and vehicle information of other vehicles.

It should be noted that the vehicle information of other vehicles stored in association with the image outside the vehicle is not limited to the information used for determining the storage timing by the storage determination unit 289, but during the period when the vehicle outside image is captured. It is good also as a structure made into the vehicle information of several other vehicles received with the communication apparatus 3. FIG.

Next, processing related to automatic display of stored outside-vehicle images (hereinafter referred to as automatic display-related processing) in the portable-side control unit 28 will be described using the flowchart of FIG. The flowchart in FIG. 7 may be configured to be started when the drive recorder application is activated.

First, in step S41, the parking detection part 291 performs a parking detection process, and moves to step S42. In the parking detection process, for example, when the moving distance of the terminal position is equal to or less than a predetermined distance within a predetermined time, the parking of the host vehicle may be detected.

If the mobile terminal 2 with an imaging function can acquire information from a sensor, ECU, or in-vehicle navigation device mounted on the vehicle via an in-vehicle LAN or the like, the vehicle is parked based on this information. It is good also as a structure to detect. As an example, when a signal indicating that the ignition power is off or the parking brake is on is obtained, the parking of the host vehicle may be detected.

In step S42, when parking of the own vehicle is detected in the parking detection process (YES in step S42), the process proceeds to step S43. On the other hand, when parking of the own vehicle is not detected in the parking detection process (NO in step S42), the process returns to step S41 and the flow is repeated.

In step S43, when a plurality of sets of images outside the vehicle are stored in the storage memory 26 during the time from the start of the drive recorder application that triggers the flowchart of FIG. 7 (hereinafter referred to as the application start period) (step S43). YES), the process proceeds to step S44. On the other hand, if a plurality of sets of images outside the vehicle are not stored in the storage memory 26 during the application activation period (NO in step S43), the process proceeds to step S46.

In step S44, the selection unit 292 performs a selection process, and proceeds to step S45. In the selection process, one set of images outside the vehicle is selected from a plurality of sets of images outside the vehicle stored in the storage memory 26 during the application activation period. The selection process may be configured to select, for example, one set of out-of-vehicle images for the storage timing corresponding to the situation that the driver of the own vehicle should be most careful out of a plurality of sets of out-of-vehicle images. As an example, one set of images outside the vehicle is selected for the storage timing at which the TTC used for the determination is the minimum among the storage timings determined by the storage determination unit 289.

In step S45, the display processing unit 293 performs the first display process and ends the flow. In the first display process, the one-set image outside the vehicle selected in the selection process is read from the storage memory 26 and automatically displayed on the display unit 27. A set of images outside the vehicle may be displayed in a time series, for example, as a moving image.

Further, when the configuration in which the vehicle information of other vehicles is stored in the storage memory 26 in association with the outside image, in the first display process, it is associated with the one set of outside image selected in the selection process. If the terminal sensor information of the own vehicle and the vehicle information of the other vehicle are read from the storage memory 26, an image or text indicating the terminal sensor information of the own vehicle and the vehicle information of the other vehicle is automatically displayed. Good. According to this, the situation around the own vehicle that cannot be understood only from the outside image can be presented to the user in an easily understandable manner.

The image indicating the terminal sensor information of the own vehicle and the vehicle information of the other vehicle includes an image indicating the positional relationship between the vehicle position of the own vehicle and the vehicle position of the other vehicle. What is necessary is just to set it as the structure which uses the terminal position of terminal sensor information as a vehicle position of the own vehicle. As an example, as shown in FIG. 8, the vehicle position of the vehicle (see A in FIG. 8) is shown on an electronic map in which an image outside the vehicle (see C in FIG. 8) is superimposed on a part of the area. What is necessary is just to set it as the structure which displays a mark and the mark which shows the vehicle position (refer B1 of FIG. 8, B2) of another vehicle.

The mark indicating the vehicle position of the own vehicle and the mark indicating the vehicle position of the other vehicle are associated with the vehicle outside image to be displayed when the vehicle outside image for one set is displayed on the display unit 27 in time series. It is preferable that the positional relationship is changed and displayed so as to be the vehicle position. According to this, the situation around the own vehicle that cannot be understood only by the outside image can be presented to the user in a more understandable manner.

Further, in FIG. 8, as indicated by the acute angle direction of the triangular mark indicating the vehicle position, a mark indicating the direction of the own vehicle and the direction of the other vehicle may be displayed. The direction of the vehicle may be obtained from the terminal position as described above. Furthermore, it is good also as a structure which displays the mark which shows the vehicle speed of the own vehicle and the vehicle speed of another vehicle. For example, the vehicle speed may be divided into a plurality of stages, and a different color mark may be displayed for each stage. Moreover, it is good also as a structure which displays the vehicle speed of the own vehicle and the vehicle speed of another vehicle by a text.

Here, although the structure which displays the image and text which show a vehicle position, a direction, and a vehicle speed with the image outside a vehicle was shown, it does not necessarily restrict to this. For example, it is good also as a structure which displays the image and text which show except a vehicle position, a direction, and a vehicle speed with an image outside a vehicle.

In step S46, if the vehicle outside image is not stored in the storage memory 26 during the application activation period (YES in step S46), the process proceeds to step S47. On the other hand, if only one set of images outside the vehicle is stored in the storage memory 26 during the application activation period (NO in step S46), the process proceeds to step S48.

In step S47, the display processing unit 293 performs the second display process and ends the flow. The second display process may be configured to automatically display on the display unit 27 a display indicating that there is no situation that the driver of the own vehicle should be aware of during the application activation period.

In step S48, the display processing unit 293 performs the third display process and ends the flow. In the third display process, a set of images outside the vehicle stored in the storage memory 26 during the application activation period is read from the storage memory 26 and automatically displayed on the display unit 27. Moreover, what is necessary is just to set it as the structure which displays the image and text which show the terminal sensor information of the own vehicle linked | related with the image outside a vehicle, and the vehicle information of another vehicle on the display part 27 also in a 3rd display process. The display mode may be the same as that described in the first display process.

In addition, for a plurality of sets of out-of-vehicle images stored in the storage memory 26 during the application activation period, an operation input unit (not shown) of the mobile terminal 2 with an imaging function other than one set of out-of-vehicle images selected in the selection process. What is necessary is just to set it as the structure which can be displayed on the display part 27 according to user operation to.

According to the configuration of the first embodiment, whether or not it is a storage timing is determined by the storage determination unit 289 based on the vehicle information transmitted from the communication device 3 of the other vehicle. The storage timing is not determined by relying on Therefore, even if the driver is unaware of the other vehicle and the driving situation of the own vehicle has not changed, the own vehicle is based on the vehicle information of the other vehicle and the terminal sensor information of the own vehicle. It is possible to determine that the driver should be aware of the storage timing. As a result, it is possible to save a vehicle outside image around the own vehicle when the driver of the own vehicle should be careful and the driver of the own vehicle is unaware of other vehicles.

When the driver of his / her vehicle should be careful and the driver of his / her vehicle is unaware of other vehicles, the following situations can be cited. For example, there is a case where the vehicle A which is the own vehicle turns right without noticing the vehicle B which is the oncoming straight vehicle (see FIG. 1). This situation may occur when the driver of the vehicle A is too distracted by a pedestrian or bicycle in the right turn direction, or when the vehicle B is behind the opposite right turn vehicle that is stopped when viewed from the driver of the vehicle A. To occur.

Further, in the configuration of the first embodiment, when no intersection occurs in the predicted trajectory between the own vehicle and the other vehicle, it is determined that there is no matching between the own vehicle and the other vehicle in the potting estimation process, and the storage process is not performed. When it is determined in the pot matching estimation process that there is no matching between the own vehicle and the other vehicle, the possibility of contact with the other vehicle is low, and it is considered that the driver of the own vehicle is not in a situation to watch out for. Therefore, according to the configuration of the first embodiment, it is possible to eliminate the waste of storing the image outside the vehicle when the driver of the own vehicle is not in a situation to be careful.

Furthermore, in the configuration of the first embodiment, when the TTC is larger than the threshold value, the storage process is not performed. When TTC is larger than the threshold value, the possibility of contact with another vehicle is low, and it is considered that the driver of the own vehicle should not be careful. Therefore, according to the configuration of the first embodiment, it is possible to further reduce the waste of storing the outside image when the driver of the own vehicle is not in a situation to be careful.

In the first embodiment, the configuration in which the processing of step S23 to step S24 is performed is shown. However, the present invention is not necessarily limited to this, and the processing of step S23 to step S24 is not performed. A configuration in which the storage determination unit 289 determines the storage timing (hereinafter, modified example 1) may be employed.

In addition, the storage determination unit 289 calculates a linear distance between the own vehicle and the other vehicle from the vehicle position of the other vehicle received from the communication device 3 of the other vehicle and the vehicle position of the own vehicle, and calculates the calculated straight line. When the distance (hereinafter referred to as self-other distance) is equal to or less than a predetermined value, it may be configured as a storage timing (hereinafter, modified example 2). In addition, when the self-other distance is not more than a predetermined distance and the relative speed of the other vehicle with respect to the own vehicle is not less than a predetermined value, it may be determined as the storage timing.

It should be noted that the predetermined distance and the predetermined value can be set arbitrarily and may be values that are estimated to be a situation that the driver of the vehicle should be careful of. Even in the configurations of the first and second modified examples, the vehicle's driver should be aware of the situation, and the vehicle's surrounding images when the driver of the own vehicle is unaware of other vehicles are also stored. It becomes possible.

(Embodiment 2)
The present disclosure is not limited to the above-described first embodiment, and the following second embodiment is also included in the technical scope of the present invention. Hereinafter, the second embodiment will be described. For convenience of explanation, members having the same functions as those shown in the drawings used in the description of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

The drive recorder system 100 of the second embodiment is the same as the drive recorder system 100 of the first embodiment except that the storage determination unit 289 determines the storage timing even when sudden braking of another vehicle is specified. More specifically, except for the point that the processes in the portable side control unit 28 of the portable terminal 2 with the imaging function and the communication side control unit 33 of the communication device 3 are partially different, the same as the drive recorder system 100 of the first embodiment. It is.

In the second embodiment, in the transmission vehicle information generation processing in the vehicle information transmission unit 332, the acceleration of the own vehicle is also generated as vehicle information from the terminal sensor information received by the terminal sensor information reception unit 331. The acceleration of the host vehicle may be calculated from the terminal position as follows. First, the vehicle speed of the host vehicle is calculated as described above from a plurality of terminal positions arranged in time series. And the time differential value of the vehicle speed calculated sequentially is calculated, and the calculated time differential value is handled as the acceleration of the own vehicle. In addition, when the mobile terminal 2 with an imaging function includes an acceleration sensor and the detection result of the acceleration sensor can be used, the acceleration of the host vehicle is obtained using the detection result of the acceleration sensor. do it.

In the second embodiment, as illustrated in FIG. 9, the mobile-side control unit 28 includes, as functional blocks, a terminal sensor information acquisition unit 281, a sensor information storage unit 282, a terminal sensor information transmission unit 283, and a vehicle exterior image acquisition unit 284. , Temporary image storage unit 285, transfer information reception unit 286, potting estimation unit 287, TTC calculation unit 288, storage determination unit 289, storage processing unit 290, parking detection unit 291, selection unit 292, display processing unit 293, and other vehicles A sudden braking identification unit 294 is provided.

In the portable side control unit 28 of the second embodiment, in addition to the vehicle exterior image storage related processing (hereinafter referred to as the first vehicle exterior image storage related processing) of the first embodiment, the following vehicle exterior image storage related processing (hereinafter referred to as the second vehicle exterior image storage). Related processing). Here, with reference to the flowchart of FIG. 10, the second outside-vehicle image storage related process in the portable side control unit 28 will be described.

First, in step S61, the other vehicle sudden braking specifying unit 294 performs another vehicle sudden braking specifying process, and the process proceeds to step S62. In the other vehicle sudden braking specifying process, it is determined whether or not the other vehicle has suddenly braked based on the acceleration of the longitudinal axis of the other vehicle in the vehicle information received from the communication device 3 of the other vehicle. . As an example, when the acceleration of the other vehicle is equal to or less than a predetermined negative value, it is specified that the other vehicle has suddenly braked. On the other hand, when it is less than the negative predetermined value, it is estimated that the other vehicle is not suddenly braking. The predetermined value here is an arbitrary value corresponding to a deceleration that can be said to be sudden braking.

In the present embodiment, the other vehicle rapid braking specifying unit 294 estimates whether or not the other vehicle has suddenly braked based on the acceleration of the front and rear axes of the other vehicle received from the communication device 3 of the other vehicle. Although the configuration is shown, it is not necessarily limited to this. For example, the other vehicle rapid braking specifying unit 294 may be configured to estimate whether the other vehicle has suddenly braked based on the vehicle position of the other vehicle received from the communication device 3 of the other vehicle. In this case, the vehicle speed of the other vehicle is calculated by obtaining the travel distance per unit time of the other vehicle from a plurality of vehicle positions of the other vehicle arranged in time series. Then, the time differential value of the vehicle speed calculated sequentially may be calculated, and the calculated time differential value may be handled as the acceleration of the other vehicle.

In addition, in a configuration in which the vehicle speed of the other vehicle can be obtained as the vehicle information of the other vehicle, the time differential value of the vehicle speed may be handled as the acceleration of the other vehicle. As another example, in the case of a configuration that can obtain a signal indicating that the other vehicle is suddenly braked as vehicle information of the other vehicle, it is determined that the other vehicle has suddenly braked when this signal is received. What is necessary is just to be the structure to do.

In step S62, when it is determined that the other vehicle suddenly brakes in the other vehicle sudden braking specifying process (YES in step S62), the process proceeds to step S63. On the other hand, if it is determined in the other vehicle sudden braking specifying process that the other vehicle is not suddenly braking (NO in step S62), the process proceeds to step S64.

In step S63, the storage determining unit 289 determines that it is the timing for storing the vehicle outside image (that is, the storage timing), and proceeds to step S65. In step S64, the storage determination unit 289 determines that it is not the storage timing, and ends the flow without performing a storage process described later. In step S65, similarly to step S27 described above, the storage processing unit 290 performs a storage process and ends the flow.

According to the configuration of the second embodiment, in addition to the configuration of the first embodiment, the storage determination unit 289 determines the storage timing even when sudden braking of another vehicle is specified. When sudden braking of another vehicle is specified, there is a high possibility that the driver of his / her vehicle should be careful. Therefore, according to the configuration of the second embodiment, a vehicle outside image in a situation where the driver of the own vehicle should be careful and the driver of the own vehicle is unaware of the other vehicle is more accurate. It is possible to save well.

The storage determination unit 289 determines that the storage timing is determined when the other vehicle has been suddenly braked in the other vehicle sudden braking specification process and the other vehicle distance is equal to or less than a predetermined distance (hereinafter referred to as the storage timing). Modification 3) is preferred. The predetermined distance can be arbitrarily set, and may be a value that is estimated to be a situation that the driver of the vehicle should be careful of.

When the sudden braking of another vehicle is specified and the own-other distance is not more than a predetermined distance, there is a high possibility that the driver of the own vehicle should be careful. Therefore, according to the configuration of the modified example 3, the vehicle outside image in the situation where the driver of the own vehicle is to be careful and the driver of the own vehicle is unaware of the other vehicle is more accurate. It is possible to save well.

In the first and second embodiments, the drive recorder system 100 uses the drive recorder unit 1 for both the own vehicle and the other vehicles. However, the present invention is not limited to this. For example, for other vehicles, it is not necessary to use the drive recorder unit 1 as long as the vehicle information can be transmitted. The same applies when other vehicles are read as pedestrians.

(Embodiment 3)
The present disclosure is not limited to the first and second embodiments described above, and the following third embodiment is also included in the technical scope of the present disclosure. Hereinafter, the third embodiment will be described. For convenience of explanation, members having the same functions as those shown in the drawings used in the description of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

The drive recorder system 100a of Embodiment 3 does not receive information transmitted from the communication device 3 used in a moving body such as another vehicle or a pedestrian, but from the communication device 4 used in a roadside device installed at an intersection. Except for receiving the transmitted information, this is the same as the drive recorder system 100 of the first embodiment. More specifically, the communication device 4 is included instead of the communication device 3 of the other vehicle, and the portable side control unit 28 of the portable terminal 2 with the imaging function of the own vehicle and the communication device side control unit 33 of the communication device 3 of the own vehicle. Except for the point that the processes in and are partially different, this is the same as the drive recorder system 100 of the first embodiment.

Here, a schematic configuration of the drive recorder system 100a according to the third embodiment will be described with reference to FIG. A drive recorder system 100a shown in FIG. 11 includes a drive recorder unit 1 used for the own vehicle (see A in the figure) and a communication device 4 used for a roadside device installed at an intersection.

The communication device 4 transmits the traffic signal information of the traffic signal 5 at the intersection where the roadside device using the communication device 4 is installed, for example, by broadcast-type wireless communication without going through the communication network. The traffic signal information may be configured to include “signal information” and “signal event expression information”. “Signal information” is signal control information of the traffic light 5, such as a lamp color state of the traffic light 5. “Signal event expression information” includes the position coordinates of the stop line of the intersection where the traffic light 5 is installed, the position coordinates of the center of the intersection, and the like.

In Embodiment 3, the vehicle exterior communication unit 32 of the communication device 3 receives a signal transmitted from the communication device 4 via a transmission / reception antenna. Hereinafter, an intersection where a roadside device using the communication device 4 is installed is referred to as a target intersection.

In the third embodiment, as shown in FIG. 12, the portable side control unit 28 includes, as functional blocks, a terminal sensor information acquisition unit 281, a sensor information storage unit 282, a vehicle exterior image acquisition unit 284, an image temporary storage unit 285, A storage determination unit 289, a storage processing unit 290, a parking detection unit 291, a selection unit 292, a display processing unit 293, an intersection approach determination unit 295, and a lamp color determination unit 296 are provided.

The mobile-side control unit 28 according to the third embodiment performs the following outside-vehicle image storage related processing (hereinafter, third outside-image saving related processing). Here, the third vehicle exterior image storage related process in the portable control unit 28 will be described using the flowchart of FIG.

First, in step S81, the intersection approach determination unit 295 performs an intersection approach determination process, and proceeds to step S82. In the intersection approach determination process, it is determined whether or not the vehicle has entered the target intersection based on the stop line of the target intersection and the position coordinates of the center of the intersection in the traffic signal information received from the communication device 4.

As an example, if the vehicle position of the vehicle exceeds the position of the stop line of the target intersection, or if the linear distance between the vehicle position of the vehicle and the intersection center of the target intersection is less than a predetermined distance, What is necessary is just to make it the structure which determines that is approaching the object intersection. The predetermined distance referred to here is a value corresponding to a linear distance between the vehicle and the intersection center when the vehicle is entering the intersection. What is necessary is just to set it as the structure which uses the terminal position of an own terminal as a vehicle position of the own vehicle.

In step S82, when it is determined in the intersection approach determination process that the vehicle has entered the target intersection (YES in step S82), the process proceeds to step S83. On the other hand, if it is determined in the intersection approach determination process that the vehicle has not entered the target intersection (NO in step S82), the process proceeds to step S86.

In step S83, the lamp color determination unit 296 performs lamp color determination processing, and proceeds to step S84. In the lamp color determination process, the lamp color of the traffic signal at the target intersection is determined based on the lamp color state of the traffic signal 5 at the target intersection in the traffic signal information received from the communication device 4.

In step S84, if the light color of the traffic light at the target intersection is red (that is, red signal) (YES in step S84), the process proceeds to step S85. On the other hand, if it is not a red signal (NO in step S84), the process proceeds to step S86.

In step S85, the storage determining unit 289 determines the timing for storing the vehicle outside image (that is, the storage timing), and proceeds to step S87. In step S86, the storage determination unit 289 determines that it is not the storage timing, and ends the flow without performing the storage process described later. In step S87, similarly to step S27 described above, the storage processing unit 290 performs a storage process and ends the flow.

In the flowchart of FIG. 13, a configuration in which the storage timing is set when the signal is red is shown, but the configuration is not necessarily limited thereto. For example, the storage timing may be used not only for a red signal but also for a yellow signal.

Further, in the third embodiment, in the selection process of the selection unit 292, for example, a set of images outside the vehicle for the storage timing at which the vehicle speed of the host vehicle is the fastest when it is determined as the storage timing may be selected.

According to the configuration of the third embodiment, the storage determination unit 289 determines whether or not it is the storage timing based on the traffic signal information transmitted from the communication device 4 used in the roadside device installed at the intersection. The storage timing is not determined by relying only on the driving situation of the vehicle. Therefore, even if the driver is unaware of the light color of the traffic light 5 and the driving situation of the own vehicle has not changed, the driver's own vehicle is based on the traffic signal information and the terminal sensor information of the own vehicle. It is possible to determine that the driver should be aware of the storage timing. As a result, it is possible to save a vehicle outside image around the own vehicle when the driver of the own vehicle should be careful and the driver of the own vehicle is unaware of other vehicles.

In the third embodiment, the configuration in which the storage timing is determined by the storage determination unit 289 based on the traffic signal information transmitted from the communication device 4 is not necessarily limited thereto. For example, when the communication device 4 relays and transmits vehicle information of other vehicles, a configuration for determining the storage timing based on the vehicle information transmitted from the communication device 4 (hereinafter referred to as Modification 4) is also possible. Good. In addition, when the position and speed of pedestrians and vehicles around the intersection are detected by the sensor of the roadside device using the communication device 4, it is stored based on the detection result of this sensor transmitted from the communication device 4. It is good also as a structure (henceforth modification 5) which judges a timing.

Even in the configurations of the modification 4 and the modification 5, it is also a situation where the driver of the own vehicle should be careful, and the outside image around the own vehicle when the driver of the own vehicle is unaware of other vehicles is also saved. It becomes possible.

Also, a configuration in which the first embodiment, the second embodiment, and the third embodiment are combined may be employed. In this case, the selection process of the selection unit 292 is configured to preferentially select the outside image for the storage timing at which the above-mentioned TTC is minimum over the outside image for the storage timing determined based on the traffic signal information. That's fine.

In the first to third embodiments described above, the configuration in which the position of the vehicle, the traveling direction, and the vehicle speed are obtained from the terminal position of the mobile terminal 2 with the imaging function is shown, but the present invention is not necessarily limited thereto. For example, it is good also as a structure which acquires the position, direction, vehicle speed, and acceleration of a vehicle from the sensor mounted in the vehicle, ECU, or a vehicle-mounted navigation apparatus via vehicle-mounted LAN etc.

Note that the present disclosure is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the technical means disclosed in different embodiments can be appropriately combined. Embodiments to be included are also included in the technical scope of the present disclosure.

Claims

An outside image storage device (1) used in a vehicle,
A vehicle exterior image capturing unit (25) that captures a vehicle exterior image around the vehicle;
A storage processing unit (290) for storing the vehicle exterior image captured by the vehicle exterior image capturing unit;
A receiving unit (333) for receiving information outside the vehicle transmitted by wireless communication from an external communication device that is a communication device outside the vehicle;
A storage determination unit (289) for determining whether it is a timing to store the vehicle exterior image based on the vehicle exterior information received by the reception unit;
The storage processing unit stores the vehicle outside image around the vehicle captured by the vehicle outside image capturing unit when the storage determination unit determines that it is a timing to store the vehicle outside image.
In claim 1,
The storage processing unit stores the information outside the vehicle used to determine that it is a timing to store the image outside the vehicle by the storage determination unit when the image outside the vehicle is stored, in association with the image outside the vehicle. A vehicle exterior image storage device.
In claim 1 or 2,
A vehicle outside image storage device comprising a display unit (27) for displaying the vehicle outside image stored in the storage processing unit.
In claim 2,
A display unit (27) for displaying both the image outside the vehicle stored by the storage processing unit and the image and / or text indicating the information outside the vehicle stored in association with the image outside the vehicle by the storage processing unit. A vehicle outside image storage device comprising:
In claim 3 or 4,
A parking detector (291) for detecting parking of the own vehicle;
When the outside image stored in the storage processing unit until the parking detection unit detects parking of the own vehicle exists for the plurality of timings, the timing of one of the plurality of timings A selection unit (292) for selecting the image outside the vehicle,
The said display part is a vehicle exterior image preservation | save apparatus which displays the said vehicle exterior image selected by the said selection part automatically, when the parking detection part detects parking of the own vehicle.
In any one of claims 1 to 5,
The storage determining unit, when the receiving unit receives the information outside the host vehicle that can determine the position of the obstacle of the vehicle, the host vehicle and the obstacle specified from the information outside the host vehicle and the position of the host vehicle A vehicle outside image storage device that determines whether or not it is a timing to store the vehicle outside image based on the positional relationship between the vehicle and the vehicle.
In claim 6,
The storage determining unit is a case where the receiving unit receives the information outside the host vehicle that can determine the position and traveling direction of the obstacle of the vehicle, and is estimated from the information outside the host vehicle and the position and traveling direction of the host vehicle An outside-vehicle image storage device that determines whether or not it is a timing to store the outside-vehicle image based on whether or not the own vehicle and the obstacle are aligned.
In claim 7,
The storage determination unit is a case where the receiving unit receives the information outside the host vehicle that can specify the position, traveling direction, and speed of the obstacle of the vehicle, and includes the information outside the host vehicle, the position of the host vehicle, and the traveling direction. And a vehicle outside image storage device that determines that the vehicle outside image is stored when the remaining time until the vehicle and the obstacle estimated from the speed match is equal to or less than a threshold.
In claim 8,
A parking detector (291) for detecting parking of the own vehicle;
When the outside image stored in the storage processing unit until the parking detection unit detects parking of the own vehicle exists for the plurality of timings, the timing of one of the plurality of timings A selection unit (292) for selecting the outside-vehicle image;
A display unit (27) for displaying at least the outside image stored in the storage processing unit,
The selection unit determines the timing when the remaining time until the own vehicle and the obstacle match is the shortest when it is determined as the timing to save the outside image among the plurality of timings. A vehicle outside image storage device for selecting the vehicle outside image.
In any one of claims 6 to 9,
The storage determining unit is the case where the receiving unit receives the information outside the host vehicle that can specify sudden braking of a vehicle other than the host vehicle, and when the sudden braking of the other vehicle is specified from the information outside the host vehicle. And a vehicle outside image storage device that judges that it is the timing to store the vehicle outside image.
In any one of claims 1 to 10,
When the receiving unit receives the traffic signal information of the intersection transmitted from the external communication device provided at the intersection as the information outside the host vehicle, the storage determination unit, based on the traffic signal information, An outside-vehicle image storage device that determines whether or not it is time to store an image.
In any one of claims 1 to 11,
A portable terminal (2) with an imaging function comprising at least the vehicle exterior image capturing unit, the storage processing unit, and the storage determination unit;
A vehicle exterior image storage device comprising a communication device (3) provided with the receiving unit.
A portable terminal with an imaging function used in the outside-vehicle image storage device (1) according to claim 12.