JP7521563B2 - Electronic device, vehicle, display control method, and program - Google Patents

Description

The present invention relates to an electronic device, a vehicle, a display control method, and a program that acquires information about traffic signs on a road on which a vehicle is traveling.

The road sign display device in Patent Document 1 displays icon images corresponding to traffic signs contained in an image captured by a camera.

JP 2015-191281 A

Conventional devices display one icon image that is most similar to the regulatory sign contained in the captured image generated by the camera. Therefore, if the captured image contains multiple regulatory signs, it was necessary to enlarge the display area to display multiple icon images, or to reduce the size of the multiple icon images.

The present invention was made in consideration of these points, and aims to display the most appropriate regulatory sign from among multiple regulatory signs in the vicinity.

The electronic device according to the first aspect of the present invention includes a storage unit that stores a priority of displaying an image corresponding to each of a plurality of regulatory signs on a display unit and a distance range between each regulatory sign whose corresponding image is displayed on the display unit and the vehicle, an identification unit that identifies a regulatory sign included in an image captured by a camera equipped on the vehicle, an acquisition unit that acquires distance information indicating the distance between the vehicle and the regulatory sign, and a display control unit that causes the display unit to display an image corresponding to the regulatory sign on the display unit when the distance between the regulatory sign identified by the identification unit and the vehicle is within the distance range of the regulatory sign, and the display control unit causes the display unit to display an image corresponding to one of the first and second regulatory signs that has a higher priority and does not display an image corresponding to the other regulatory sign on the display unit when the distance between each of the first and second regulatory signs and the vehicle is within the distance range corresponding to each of the regulatory signs.

The first regulatory sign and the second regulatory sign are of a different type from a regulatory sign indicating the speed limit of the road on which the vehicle is located, and the display control unit causes an image corresponding to the first regulatory sign or the second regulatory sign to be displayed in a first display area of the display unit, and when a third regulatory sign indicating the speed limit of the road on which the vehicle is located is identified by the identification unit, the display control unit may cause an image corresponding to the third regulatory sign to be displayed in a second display area different from the first display area of the display unit, regardless of the display in the first display area.

The display control unit may cause the display unit to display an image corresponding to a regulatory sign that has the highest priority and the shortest distance among a plurality of regulatory signs including the first regulatory sign and the second regulatory sign.

The display control unit may cause an image corresponding to a regulatory sign having a higher priority to be displayed on the display unit when the distance between the vehicle and the regulatory sign having a higher priority is less than the distance range associated with the regulatory sign.

When the attribute of the regulatory sign having the higher priority indicates that an image corresponding to the regulatory sign is to be displayed on the display unit before the vehicle passes the regulatory sign, the display control unit may display the image corresponding to the regulatory sign on the display unit, provided that the distance between the vehicle and the regulatory sign ahead of the vehicle in the traveling direction is within the distance range corresponding to the regulatory sign.

When the attribute of the regulatory sign having the higher priority indicates that an image corresponding to the regulatory sign is to be displayed on the display unit after the vehicle passes the regulatory sign, the display control unit may display the image corresponding to the regulatory sign on the display unit, on condition that the distance between the vehicle and the regulatory sign located behind the vehicle in the traveling direction is within the distance range corresponding to the regulatory sign.

The memory unit may store the priority of a regulatory sign indicating no entry and a regulatory sign indicating a stop as a first priority, which is the highest priority, and store the priority of a regulatory sign indicating overtaking as a second priority, which is next to the first priority.

A vehicle according to a second aspect of the present invention has the above electronic device and the camera that generates the captured image.

The display control method according to the third aspect of the present invention includes the steps of identifying a regulatory sign included in an image captured by a camera mounted on a vehicle, executed by a processor, acquiring distance information indicating the distance between the vehicle and the regulatory sign, and displaying an image corresponding to the regulatory sign on a display unit when the distance between the regulatory sign and the vehicle is within the distance range of the regulatory sign, and is characterized in that in the displaying step, when the distance between the vehicle and each of a first regulatory sign and a second regulatory sign is within the distance range corresponding to each of the regulatory signs, an image corresponding to one of the first regulatory sign and the second regulatory sign having a higher priority is displayed on the display unit, and an image corresponding to the other regulatory sign is not displayed on the display unit.

The program according to the fourth aspect of the present invention causes a processor to execute the steps of identifying a regulatory sign included in an image captured by a camera mounted on a vehicle, acquiring distance information indicating the distance between the vehicle and the regulatory sign, and displaying an image corresponding to the regulatory sign on a display unit when the distance between the regulatory sign and the vehicle is within the distance range of the regulatory sign, and is characterized in that in the displaying step, when the distance between the vehicle and each of a first regulatory sign and a second regulatory sign is within the distance range corresponding to each of the first and second regulatory signs, an image corresponding to one of the first and second regulatory signs having a higher priority is displayed on the display unit, and an image corresponding to the other regulatory sign is not displayed on the display unit.

The present invention has the effect of displaying the most appropriate regulatory sign from among multiple regulatory signs in the vicinity.

1 is a diagram for explaining an overview of a vehicle S according to an embodiment of the present invention; 13 is a diagram for explaining an operation of displaying one of the regulatory signs having a higher priority; FIG. 13 is a diagram for explaining the operation of displaying one of the regulatory signs that is closer to the vehicle S; FIG. 13 is a diagram showing a display unit 3 displaying images corresponding to a plurality of regulatory signs. FIG. 11 is a diagram showing an example of a processing sequence in the electronic device 2.

<Overview of Vehicle S>
Fig. 1 is a diagram for explaining an overview of a vehicle S according to this embodiment. The vehicle S shown in Fig. 1 includes a camera 1, an electronic device 2, and a display unit 3. The vehicle S has a function of displaying an image corresponding to a regulatory sign around the vehicle S on the display unit 3 such as a display.

The camera 1 extracts regulatory signs from a captured image generated by capturing an image of the surroundings of the vehicle S, and transmits regulatory sign identification information (hereinafter referred to as "sign ID") for identifying the extracted regulatory sign and distance information indicating the distance between the extracted regulatory sign and the vehicle S to the electronic device 2. The camera 1 has a memory for storing pattern images for identifying multiple regulatory signs, and identifies the sign ID by matching the sign portion included in the captured image with the pattern image through pattern matching processing.

The process of acquiring identification information of the sign included in the captured image can use known image recognition technology and is not limited to pattern matching processing. The camera 1 can also acquire the distance between the regulatory sign and the vehicle S from the captured image, but may be combined with another distance measurement method. For example, the camera 1 may be equipped with a distance measurement device that outputs radar in a specified direction and acquires the distance to an object present in the specified direction depending on the timing of detecting the reflected wave. The camera 1 may acquire distance information to an object (regulatory sign) included in the captured image using the captured image and the measurement results of the distance measurement device.

The electronic device 2 identifies regulatory signs installed around the vehicle S based on the sign ID acquired from the camera 1, and executes a process to display an image corresponding to the identified regulatory sign on the display unit 3. The electronic device 2 may take any form, and may have a housing containing electronic components, or may be a printed circuit board on which electronic components are mounted. In this embodiment, the electronic device 2 is a board for vehicle control on which a processor and a memory unit are mounted.

The display unit 3 is a display that displays the speed, remaining fuel, time, temperature, etc., and acquires and displays images corresponding to regulatory signs from the electronic device 2. The display unit 3 is provided on the instrument panel of the vehicle S, but may also be provided on an information terminal used by the driver.

However, the more regulatory signs included in the captured image generated by the camera 1, the larger the display area in which the regulatory signs are displayed must be, and the smaller the size of the images corresponding to the regulatory signs must be. As a result, the visibility of the regulatory signs decreases, making it difficult for the driver to know which regulatory signs they should follow when driving.

In response to this, the electronic device 2 causes the display unit 3 to display one regulatory sign with the highest priority among a plurality of regulatory signs whose distances to the vehicle S are within a predetermined distance range. By operating in this manner, the electronic device 2 can allow the driver to visually recognize a regulatory sign that is appropriate for the driver.
The configuration and operation of the electronic device 2 will be described in detail below.

<Configuration of Electronic Device 2>
The electronic device 2 includes a communication unit 21, a storage unit 22, and a control unit 23. The control unit 23 includes an identification unit 231, an acquisition unit 232, and a display control unit 233.

The communication unit 21 includes a communication device for transmitting and receiving information via a network or a digital signal transmission bus. The communication device is, for example, a CAN (Controller Area Network) controller.

The storage unit 22 has a storage medium such as a read only memory (ROM), a random access memory (RAM), a hard disk drive (HDD), or a solid state drive (SSD). The storage unit 22 stores the programs executed by the control unit 23.

The memory unit 22 stores information for displaying an image corresponding to a regulatory sign on the display unit 3. For example, the memory unit 22 stores a priority for displaying an image corresponding to each of a plurality of regulatory signs on the display unit 3, and a set range for displaying an image corresponding to each of a plurality of regulatory signs on the display unit 3, which is a distance range between each regulatory sign and the vehicle S. The priority corresponding to each regulatory sign is set higher as the probability of an accident occurring when the vehicle S is driven without following the regulations indicated by the regulatory sign increases. As an example, the memory unit 22 stores the priority of a regulatory sign indicating no entry and a regulatory sign indicating a stop as a first priority, and stores the priority of a regulatory sign indicating overtaking as a second priority that is lower than the first priority.

The set range is a distance range for determining whether or not to display an image corresponding to an identified regulatory sign on the display unit 3, and is defined using a distance threshold. As described below, the display unit 3 displays an image corresponding to a regulatory sign when the distance between an identified regulatory sign and the vehicle S is equal to or less than a distance threshold preset for the regulatory sign. In other words, a state in which the distance between the regulatory sign and the vehicle S is equal to or less than a distance threshold preset for the regulatory sign can be said to be a state in which the distance between the regulatory sign and the vehicle S is included in the set range.

As described below, the threshold value indicating the setting range may differ depending on the traveling direction of the vehicle S. The setting range is a judgment criterion for controlling whether or not to display an image corresponding to a regulatory sign depending on the distance between the vehicle S and the regulatory sign, and various forms other than the form described above can be adopted. Furthermore, the memory unit 22 stores the image corresponding to the regulatory sign in association with the sign name and sign ID of the regulatory sign. That is, the memory unit 22 stores the sign ID, sign name, priority, and setting range in association with each regulatory sign.

The control unit 23 is a so-called processor, such as a CPU (Central Processing Unit) or an ECU (Electronic Control Unit). The control unit 23 executes a program stored in the storage unit 22 to function as an identifying unit 231, an acquiring unit 232, and a display control unit 233. The control unit 23 may be configured with one processor, or may be configured with a combination of multiple processors or one or more processors and electronic circuits.
The configuration of each unit realized by the control unit 23 will be described below.

The identification unit 231 identifies a regulatory sign included in a captured image generated by the camera 1 equipped in the vehicle S. For example, the identification unit 231 acquires a sign ID corresponding to a regulatory sign included in the captured image from the camera 1, and identifies a sign name associated with the acquired sign ID and an image corresponding to the regulatory sign from the information stored in the storage unit 22.

The acquisition unit 232 acquires distance information indicating the distance between the vehicle S and the regulatory sign. For example, the acquisition unit 232 acquires distance information from the camera 1 that corresponds to the sign ID acquired by the identification unit 231. The acquisition unit 232 stores the sign ID and the distance information in the storage unit 22.

The acquisition unit 232 may also acquire directional information indicating whether the regulatory sign is installed in the forward or backward direction of the vehicle S in association with the distance information. For example, the acquisition unit 232 acquires the time difference between the timing at which an image including the regulatory sign is acquired and the current time, and acquires the distance between the regulatory sign and the vehicle S at the current time from the speed information of the vehicle S and the time difference. If the acquired distance between the regulatory sign and the vehicle S at the current time is a negative value, it is determined that the regulatory sign is installed backward in the direction of travel.

Furthermore, if the vehicle S has a camera (not shown) that captures an image behind the vehicle S in the direction of travel in addition to the camera 1 that captures an image ahead of the vehicle S, the acquisition unit 232 may identify the direction in which the regulatory sign is installed depending on which camera captures the image. If the vehicle S has multiple cameras 1, the acquisition unit 232 may acquire camera identification information (hereinafter referred to as "camera ID") for identifying the camera 1 in association with the distance information.

When the distance between the regulatory sign identified by the identification unit 231 and the vehicle S is included in the set range of the regulatory sign, the display control unit 233 causes the display unit 3 to display an image corresponding to the regulatory sign. For example, when the distance indicated by the distance information acquired by the acquisition unit 232 is smaller than the distance threshold value that defines the set range between the regulatory sign indicated by the sign ID corresponding to the distance information and the vehicle S, the display control unit 233 causes the display unit 3 to display an image corresponding to the regulatory sign. By operating in this manner, the display control unit 233 can display a regulatory sign appropriate to the position of the vehicle S.

However, if multiple regulatory signs are installed on the road on which vehicle S is traveling, it is assumed that the distance between each of the multiple identified regulatory signs and vehicle S is included in the set range set for each regulatory sign. In response to this, for example, when the distance between each of the first regulatory sign and the second regulatory sign and vehicle S is included in the set range corresponding to each regulatory sign, the display control unit 233 causes the display unit 3 to display an image corresponding to one of the first regulatory sign and the second regulatory sign, which has a higher priority. Then, the display control unit 233 does not cause the display unit to display an image corresponding to the other regulatory sign.

Figure 2 is a diagram for explaining the operation of displaying one of the regulatory signs with a higher priority. Figure 2 shows a first regulatory sign, sign R1, indicating no overtaking, and a second regulatory sign, sign R2, indicating a stop sign. Distance L1 is the distance between vehicle S and sign R1, and distance L2 is the distance between vehicle S and sign R2.

For example, the display control unit 233 determines that the distance L1 is smaller than the set range of sign R1, and that the distance L2 is smaller than the set range of sign R2. Then, by referring to the memory unit 22, the display control unit 233 determines that the first priority of sign R2 is higher than the second priority of sign R1, and causes the display unit 3 to display an image corresponding to sign R2, and does not cause the display unit 3 to display an image corresponding to sign R1. By operating in this manner, the display control unit 233 can display regulatory signs appropriate for the driver or vehicle S.

The setting range corresponding to each regulatory sign is different for each regulatory sign. For example, the storage unit 22 stores a setting range for a stop sign where the distance between the vehicle S and the sign is within 100 m, and a setting range for a no entry sign where the distance between the vehicle S and the sign is within 150 m. Therefore, for example, when the distance between a regulatory sign with a higher priority and the vehicle S is included in the setting range associated with the regulatory sign, the display control unit 233 causes the display unit 3 to display an image corresponding to the regulatory sign.

Furthermore, there are regulatory signs that are displayed before the vehicle S passes the regulatory sign (e.g., stop, no entry) and regulatory signs that are displayed after the vehicle S passes the regulatory sign (e.g., no overtaking). Therefore, whether the distance to be compared with the set range is the distance before the vehicle S passes the regulatory sign or the distance after the vehicle S passes the regulatory sign varies for each regulatory sign. Therefore, the memory unit 22 stores attributes corresponding to the set range for each regulatory sign. The attributes include "before passing", which indicates that an image corresponding to the regulatory sign is displayed on the display unit 3 before the vehicle S passes the regulatory sign, and "after passing", which indicates that an image corresponding to the regulatory sign is displayed on the display unit 3 after the vehicle S passes the regulatory sign.

When the attribute of a regulatory sign with a high priority indicates "before passing", the display control unit 233 causes the display unit 3 to display an image corresponding to the regulatory sign, provided that the distance between the vehicle S and the regulatory sign ahead of the vehicle S in the traveling direction is included in a set range corresponding to the regulatory sign. When the attribute of a regulatory sign with a high priority indicates "after passing", the display control unit 233 causes the display unit 3 to display an image corresponding to the regulatory sign, provided that the distance between the vehicle S and the regulatory sign behind the vehicle S in the traveling direction is included in a set range corresponding to the regulatory sign.

In this way, the display control unit 233 can display the regulatory signs at appropriate driving positions corresponding to each of the multiple regulatory signs by selectively using the distance in front of the vehicle S in the traveling direction and the distance in rear of the vehicle S in the traveling direction according to the attributes of the set range. Whether the distance indicated by the distance information is in front of the vehicle S in the traveling direction or rear of the vehicle S in the traveling direction can be determined based on the direction information acquired by the acquisition unit 232, or the imaging direction information (i.e., information indicating whether the vehicle is being photographed in front of the vehicle or rear of the vehicle) stored in the storage unit 22 in association with the camera ID acquired by the acquisition unit 232.

When multiple regulatory signs are installed on the road on which the vehicle S is traveling, it is assumed that the priority of multiple regulatory signs whose distance from the vehicle S is within a set range is the same. In response to this, the display control unit 233 causes the display unit 3 to display an image corresponding to the regulatory sign that has the highest priority and is the shortest distance from the vehicle S among the multiple regulatory signs, including, for example, the first regulatory sign and the second regulatory sign.

Figure 3 is a diagram for explaining the operation of displaying one of the regulatory signs that is closer to vehicle S. Figure 3 shows sign R2, which is a first regulatory sign indicating a stop, and sign R3, which is a second regulatory sign indicating no entry. Distance L3 is the distance between vehicle S and sign R2, and distance L4 is the distance between vehicle S and sign R3.

For example, the display control unit 233 determines that distance L3 is a distance included in the setting range of sign R2, and that distance L4 is a distance included in the setting range of sign R3. Then, the display control unit 233 determines that signs R2 and R3 have the same priority (first priority). In this case, the display control unit 233 causes sign R2 to be displayed on the display unit 3 because distance L3 is smaller than distance L4. By operating in this manner, the display control unit 233 can display the regulatory sign that must be obeyed earliest.

The driver wants to drive without exceeding the speed limit of the road on which the vehicle S is traveling. However, when the display control unit 233 causes the display unit 3 to display an image corresponding to one regulatory sign selected from multiple regulatory signs, there will be a period of time during which the regulatory sign indicating the speed limit is not displayed on the display unit 3. Therefore, the display control unit 233 may display the regulatory sign indicating the speed limit in an area different from other regulatory signs.

Figure 4 shows the display unit 3 displaying images corresponding to multiple regulatory signs. Figure 4 shows a display area A1 for displaying a first regulatory sign or a second regulatory sign, which is a different type of regulatory sign from the regulatory sign indicating the speed limit of the road on which the vehicle S is located, and a display area A2 for displaying the regulatory sign indicating the speed limit of the road.

For example, the display control unit 233 displays an image corresponding to the first regulatory sign or the second regulatory sign in the display area A1 of the display unit 3. The display control unit 233 displays an image corresponding to a regulatory sign of the first priority or the second priority in the display area A1 as an image corresponding to the first regulatory sign or the second regulatory sign. Furthermore, when a third regulatory sign indicating the speed limit of the road on which the vehicle S is located is identified by the identification unit 231, the display control unit 233 displays an image corresponding to the third regulatory sign in a display area A2 different from the display area A1 of the display unit 3, regardless of the display in the display area A1. By the display control unit 233 operating in this manner, the driver can know the speed limit of the road on which the vehicle S is traveling at any time.

<Processing sequence in electronic device 2>
5 is a diagram showing an example of a processing sequence in the electronic device 2. The processing sequence shown in FIG. 5 shows, as an example, an operation of identifying a regulatory sign and then displaying an image corresponding to the regulatory sign on the display unit 3. This sequence is started in response to acquisition of a sign ID from the camera 1, and is executed repeatedly in response to acquisition of a sign ID while the vehicle S is running. Furthermore, when multiple sign IDs are acquired from a captured image, this sequence is executed for each regulatory sign identified corresponding to each sign ID. In other words, when multiple regulatory signs are identified, the determination process and display control process of this sequence are executed for each regulatory sign.

The identification unit 231 identifies a regulatory sign corresponding to the sign ID acquired from the camera 1 by referring to the memory unit 22 (S11). If the identified regulatory sign is a regulatory sign indicating a speed limit (NO in S12), the display control unit 233 displays an image corresponding to the regulatory sign in the second display area (for example, the display area A2 shown in FIG. 4) (S13).

If the identified regulatory sign is not a regulatory sign indicating a speed limit (YES in S12), the acquisition unit 232 acquires distance information from the camera 1 (S14). If the distance indicated by the distance information is greater than the set range corresponding to the identified regulatory sign (i.e., not included in the set range) (NO in S15), the display control unit 233 does not display the identified regulatory sign. On the other hand, if the distance indicated by the distance information is less than the set range corresponding to the identified regulatory sign (i.e., included in the set range) (YES in S15), the display control unit 233 identifies the priority of the regulatory sign.

The display control unit 233 identifies the priority corresponding to the identified regulatory sign by referring to the memory unit 22. If the priority of the identified regulatory sign is not the highest priority among the multiple regulatory signs included in the set range (NO in S16), the display control unit 233 does not display the identified regulatory sign. On the other hand, if the priority of the identified regulatory sign is the highest priority among the multiple regulatory signs included in the set range (YES in S16), the display control unit 233 identifies whether or not there is a regulatory sign of the same priority among the multiple regulatory signs included in the set range.

If there are no regulatory signs of the same priority among the multiple regulatory signs included in the set range (NO in S17), the display control unit 233 displays the identified regulatory sign in the first display area (e.g., display area A1 shown in FIG. 4) (S19). On the other hand, if there are regulatory signs of the same priority among the multiple regulatory signs included in the set range (YES in S17), the display control unit 233 compares the distance between the vehicle S and each of the multiple regulatory signs of the same priority.

If the identified regulatory sign is included in the set range and is not the regulatory sign with the shortest distance from the vehicle S among multiple regulatory signs with the same priority (NO in S18), the display control unit 233 does not display the identified regulatory sign. On the other hand, if the identified regulatory sign is the regulatory sign with the shortest distance from the vehicle S (YES in S18), the display control unit 233 displays it in the first display area (S19).

The electronic device 2 executes the above-described series of sequences for the regulatory sign identified from the acquired sign ID. When multiple sign IDs are acquired, the electronic device 2 executes the sequence for each regulatory sign corresponding to each sign ID. Furthermore, the multiple sign IDs are not limited to those acquired from the same captured image, but may be those acquired from multiple captured images acquired within a specified period of time.

<Effects of Electronic Device 2>
As described above, the electronic device 2 has a memory unit 22 that stores the priority of displaying images corresponding to each of a plurality of regulatory signs on the display unit 3 and the distance range between the vehicle S and each regulatory sign whose corresponding image is displayed on the display unit 3, an identification unit 231 that identifies a regulatory sign included in an image captured by the camera 1 equipped on the vehicle S, an acquisition unit 232 that acquires distance information indicating the distance between the vehicle S and the regulatory sign, and a display control unit 233 that causes the display unit 3 to display an image corresponding to the regulatory sign when the distance between the vehicle S and the regulatory sign identified by the identification unit 231 is within the distance range of the regulatory sign.

Then, when the distance between the vehicle S and each of the first and second regulatory signs is within the distance range corresponding to each regulatory sign, the display control unit 233 causes the display unit 3 to display an image corresponding to one of the first and second regulatory signs, which has a higher priority, and does not cause the display unit 3 to display an image corresponding to the other regulatory sign.

By configuring the electronic device 2 in this manner, it is possible to display regulatory signs appropriate to the position of the vehicle S. Furthermore, by displaying the regulatory signs on the display unit 3 based on the priority levels corresponding to the regulatory signs, it is possible to give priority to displaying regulatory signs that the driver most needs to follow.

Although the present invention has been described above using embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist of the invention. For example, all or part of the device can be configured by distributing or integrating functionally or physically in any unit. In addition, new embodiments resulting from any combination of multiple embodiments are also included in the embodiments of the present invention. The effect of the new embodiment resulting from the combination also has the effect of the original embodiment.

Reference Signs List 1 Camera 2 Electronic device 3 Display unit 21 Communication unit 22 Storage unit 23 Control unit 231 Identification unit 232 Acquisition unit 233 Display control unit

Claims (9)

a storage unit that stores a priority for displaying an image corresponding to each of a plurality of regulatory signs on a display unit, and a distance range between each regulatory sign and a vehicle, the corresponding image of which is displayed on the display unit;
An identification unit that identifies a regulatory sign included in a captured image generated by a camera equipped in the vehicle;
an acquisition unit that acquires distance information indicating a distance between the vehicle and the regulatory sign;
a display control unit that, when a distance between the regulatory sign identified by the identification unit and the vehicle is within a distance range of the regulatory sign, causes an image corresponding to the regulatory sign to be displayed on the display unit;
when a distance between the vehicle and each of a first regulatory sign and a second regulatory sign , which are different in type from a regulatory sign indicating a speed limit of a road on which the vehicle is located, is within a distance range corresponding to each of the first and second regulatory signs, the display control unit causes an image corresponding to one of the first and second regulatory signs, which has a higher priority, to be displayed in a first display area of the display unit, and does not cause an image corresponding to the other regulatory sign to be displayed on the display unit;
when a third regulatory sign indicating a speed limit of the road on which the vehicle is located is identified by the identification unit, the display control unit causes an image corresponding to the third regulatory sign to be displayed in a second display area different from the first display area of the display unit, regardless of the display in the first display area.
Electronics. the display control unit causes the display unit to display an image corresponding to a regulatory sign that has the highest priority and the shortest distance among a plurality of regulatory signs including the first regulatory sign and the second regulatory sign.
2. The electronic device according to claim 1 . the display control unit, when the distance between the one regulatory sign having the higher priority and the vehicle is less than the distance range associated with the regulatory sign, causes an image corresponding to the regulatory sign to be displayed on the display unit.
2. The electronic device according to claim 1 . When an attribute of the regulatory sign having a higher priority indicates that an image corresponding to the regulatory sign is to be displayed on the display unit before the vehicle passes the regulatory sign, the display control unit causes the image corresponding to the regulatory sign to be displayed on the display unit, on condition that a distance between the vehicle and the regulatory sign ahead in the traveling direction of the vehicle is within a distance range corresponding to the regulatory sign.
2. The electronic device according to claim 1 . When an attribute of the regulatory sign having a higher priority indicates that an image corresponding to the regulatory sign is to be displayed on the display unit after the vehicle has passed the regulatory sign, the display control unit causes the image corresponding to the regulatory sign to be displayed on the display unit on condition that a distance between the vehicle and the regulatory sign located behind the vehicle in a traveling direction of the vehicle is within a distance range corresponding to the regulatory sign.
2. The electronic device according to claim 1 . the storage unit stores the priority of a regulatory sign indicating no entry and a regulatory sign indicating a stop as a first priority having the highest priority, and stores the priority of a regulatory sign indicating overtaking as a second priority next to the first priority.
2. The electronic device according to claim 1 . The electronic device according to claim 1 ;
The camera for generating the captured image;
A vehicle comprising: The processor executes
Identifying a regulatory sign included in an image captured by a camera mounted on the vehicle;
acquiring distance information indicating a distance between the vehicle and the regulatory sign;
and when the distance between the regulatory sign and the vehicle is within a distance range of the regulatory sign, displaying an image corresponding to the regulatory sign on a display unit.
In the displaying step, when a distance between the vehicle and each of a first regulatory sign and a second regulatory sign, which are different in type from a regulatory sign indicating the speed limit of the road on which the vehicle is located, is within a distance range corresponding to each of the regulatory signs, an image corresponding to one of the first regulatory sign and the second regulatory sign, which has a higher priority, is displayed in a first display area of the display unit, and an image corresponding to the other regulatory sign is not displayed on the display unit; and when a third regulatory sign indicating the speed limit of the road on which the vehicle is located is identified in the identifying step, an image corresponding to the third regulatory sign is displayed in a second display area different from the first display area of the display unit, without being displayed in the first display area.
A display control method comprising: The processor:
Identifying a regulatory sign included in an image captured by a camera mounted on the vehicle;
acquiring distance information indicating a distance between the vehicle and the regulatory sign;
and when the distance between the regulatory sign and the vehicle is within the distance range of the regulatory sign, causing a display unit to display an image corresponding to the regulatory sign;
In the displaying step, when a distance between the vehicle and each of a first regulatory sign and a second regulatory sign, which are different in type from a regulatory sign indicating the speed limit of the road on which the vehicle is located, is within a distance range corresponding to each of the regulatory signs, an image corresponding to one of the first regulatory sign and the second regulatory sign, which has a higher priority, is displayed in a first display area of the display unit, and an image corresponding to the other regulatory sign is not displayed on the display unit; and when a third regulatory sign indicating the speed limit of the road on which the vehicle is located is identified in the identifying step, an image corresponding to the third regulatory sign is displayed in a second display area different from the first display area of the display unit, without being displayed in the first display area.
A program characterized by:

Images