Apparatus, system and method for acquiring image for vehicle

Abstract

The invention relates to an apparatus, system and method for acquiring an image for a vehicle. An embodiment apparatus for acquiring an image for a vehicle includes a lens allowing a light signal from a target location to pass through, a light amplifier for amplifying the light signal passing through the lens, a sensor acquiring an image signal contained in the light signal, an image signal processor processing the image signal, and a processor processing the image signal. And a plurality of reflectors rotatable between a position set for the night image acquisition mode and a position set for the day image acquisition mode. Wherein in the night image acquisition mode, the position of the reflector is set to enable an optical signal penetrating through the lens to be transmitted to the sensor after passing through the optical amplifier, and in the daytime image acquisition mode, the position of the reflector is set to enable the optical signal penetrating through the lens to be transmitted to the sensor without passing through the optical amplifier.

Description

[0001] Cross - reference to related applications

[0002] This application claims priority to Korean Patent Application No. 10 - 2023 - 0169212, filed on November 29, 2023, the entire content of which is incorporated herein for all purposes by this reference. Technical field

[0003] This application relates to an apparatus, a system, and a method for acquiring images for a vehicle. Background art

[0004] As autonomous driving technology is increasingly applied to vehicles, monitoring passengers inside the vehicle has become a necessary measure. Accordingly, it has become very important to acquire image information of passengers inside the vehicle through means such as cameras.

[0005] When using a normal camera to acquire image information inside the vehicle, image information can be stably acquired in a bright environment. However, when the vehicle enters a tunnel or is in a dark environment, it may be difficult to stably acquire image information (e.g., loss of image information). Or, when using an infrared camera to acquire image information inside the vehicle, it may be difficult to acquire sufficient image information, making it to some extent difficult to distinguish the posture or condition of passengers through the image information, and it may also increase costs.

[0006] The above information disclosed in this background section is only for enhancing the understanding of the background of the embodiments of the present invention, and thus it may include information that does not constitute known prior art. Summary of the invention

[0007] This application relates to an apparatus, a system, and a method for acquiring images for a vehicle. Specific embodiments relate to such an apparatus, a system, and a method for acquiring images for a vehicle that can acquire good image information both in bright and dark environments using a single integrated image - acquiring device.

[0008] Embodiments of this application provide an apparatus, a system, and a method for acquiring images for a vehicle that can acquire good image information both in bright and dark environments.

[0009] According to an embodiment of the present application, an apparatus for acquiring an image for a vehicle includes: a housing, a lens mounted on a surface of the housing and configured to allow an optical signal from a target position to pass through, an optical amplifier configured to amplify the passing optical signal, a sensor configured to acquire an image signal included in the optical signal, an image signal processor configured to process the image signal acquired by the sensor, and at least two reflectors configured to be rotatable between a position set for a night image acquisition mode and a position set for a day image acquisition mode, to transmit the optical signal passing through the lens in the day image acquisition mode to the sensor without passing through the optical amplifier, and to transmit the optical signal passing through the lens in the night image acquisition mode to the sensor after passing through the optical amplifier.

[0010] The apparatus for acquiring an image for a vehicle may further include a filter configured to filter the optical signal passing through the lens.

[0011] The filter may filter the optical signal in the day image acquisition mode.

[0012] The number of its reflectors may be even.

[0013] According to another embodiment of the present application, a system for acquiring an image for a vehicle may include: an illuminance sensor configured to measure an illuminance value of an internal or external environment of the vehicle, a controller configured to receive the illuminance value from the illuminance sensor, compare the illuminance value with a preset threshold, generate a first control signal when the illuminance value is greater than or equal to the preset threshold, and generate a second control signal when the illuminance value is less than the preset threshold, and an apparatus for acquiring an image including: a lens configured to allow an optical signal to pass through, an optical amplifier configured to amplify the optical signal, a sensor configured to acquire an image signal included in the optical signal, an image signal processor configured to process the image signal acquired by the sensor and transmit the processed image signal to the controller, and at least two reflectors configured to change a path of the optical signal passing through the lens, wherein when the apparatus for acquiring an image receives the first control signal from the controller, at least two reflectors may be controlled such that the optical signal passing through the lens is transmitted to the sensor without passing through the optical amplifier, and when the apparatus for acquiring an image receives the second control signal from the controller, at least two reflectors may be controlled such that the optical signal passing through the lens passes through the optical amplifier and then is transmitted to the sensor.

[0014] The apparatus for acquiring an image may further include a filter configured to filter the optical signal passing through the lens.

[0015] The filter may filter the optical signal in the day image acquisition mode.

[0016] The number of its reflectors can be even.

[0017] The threshold can be preset according to the type of the vehicle.

[0018] The controller can further be configured to transmit the processed image to a corresponding device.

[0019] According to another embodiment of the present application, a method for acquiring an image for a vehicle includes: detecting an illuminance value of an internal or external environment of the vehicle through an illuminance sensor, in response to receiving the illuminance value, comparing, by a controller, the illuminance value of the internal or external environment of the vehicle with a preset threshold, in response to the illuminance value being greater than or equal to the preset threshold, generating, by the controller, a first control signal, and transmitting the generated first control signal to a device for acquiring an image, and in response to receiving the first control signal, the device for acquiring an image operates in a daytime image acquisition mode, wherein the device for acquiring an image can include: a lens configured to allow an optical signal to pass through, an optical amplifier configured to amplify the optical signal, a sensor configured to acquire an image signal included in the optical signal, an image signal processor configured to process the image signal acquired by the sensor and transmit the processed image signal to the controller, and at least two reflectors configured to change a path of the optical signal passing through the lens, and the device for acquiring an image can control the at least two reflectors such that the optical signal passing through the lens is transmitted to the sensor without passing through the optical amplifier in the daytime image acquisition mode.

[0020] The method can further include: in response to the illuminance value being less than the preset threshold, generating, by the controller, a second control signal, and transmitting the generated second control signal to the device for acquiring an image, in response to receiving the second control signal, the device for acquiring an image operates in a nighttime image acquisition mode, wherein the device for acquiring an image can control the at least two reflectors such that the optical signal passing through the lens passes through the optical amplifier and then is transmitted to the sensor in the nighttime image acquisition mode.

[0021] The device for acquiring an image can further include a filter, and the filter is configured to filter the optical signal passing through the lens.

[0022] The filter can filter the optical signal in the daytime image acquisition mode.

[0023] The preset threshold can be preset according to the type of the vehicle.

[0024] The method can further include transmitting, by the controller, the processed image to a corresponding device.

[0025] According to the embodiments of the present application, even when the illuminance changes, stable image information can be obtained using a single integrated image acquisition device. Accordingly, it can be used as a system for ensuring image information for various convenience functions of a vehicle (such as a passenger monitoring function and a posture recognition function).

[0026] By integrating a device for obtaining image information in a bright environment and a device for obtaining image information in a dark environment into a single device for obtaining images, costs and installation space can be reduced.

[0027] Other effects that can be obtained or predicted through the exemplary embodiments will be described explicitly or implicitly in the detailed description of the exemplary embodiments. That is, various effects predicted according to the exemplary embodiments will be described in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The embodiments of this specification can be better understood by referring to the following description in conjunction with the accompanying drawings, in which the same reference numerals represent the same or functionally similar elements.

[0029] Figure 1 is a block diagram of an image acquisition system for a vehicle according to an embodiment of the present application.

[0030] Figure 2 is a schematic diagram of an image acquisition device for a vehicle according to another embodiment of the present application.

[0031] Figure 3 is a schematic illustration of the interior of the Figure 2 image acquisition device in the daytime image acquisition mode.

[0032] Figure 4 is a schematic illustration of the interior of the Figure 2 image acquisition device in the nighttime image acquisition mode.

[0033] Figure 5 is a flowchart of a method for acquiring images for a vehicle according to another embodiment of the present application.

[0034] It should be understood that the accompanying drawings are not necessarily drawn to scale, but rather are schematic representations of various features presented in a suitably simplified manner to illustrate the basic principles of the present invention. Specific design features of the present invention included herein (such as specific dimensions, orientations, positions, and shapes) will be determined in part by the specific application and use environment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present invention. As used herein, the singular forms are also intended to include the plural forms unless the context clearly dictates otherwise. When used herein, the terms "comprises" and / or "comprising" specify the presence of the stated features, numbers, steps, operations, elements, and / or components, but it will also be understood that these terms do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of the associated listed items.

[0036] As used in this specification, "vehicle" or "vehicular" or other similar terms include passenger vehicles including sport utility vehicles (SUVs), general land vehicles (including buses, trucks, various commercial vehicles, etc.), marine vessels including various types of boats and ships, and aerial vehicles including airplanes, drones, etc., and include all objects that can move by receiving power from a power source. In addition, "vehicle" or "vehicular" or other similar terms used in this specification may be understood to include hybrid vehicles, electric vehicles, plug-in hybrid vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels derived from non-petroleum energy sources). As described in this specification, a hybrid vehicle includes a vehicle having two or more power sources, such as a vehicle having both gasoline power and electric power. The vehicle according to an embodiment of the present application includes a vehicle that is to some extent autonomous and / or self-driving and a manually driven vehicle.

[0037] In addition, it can be understood that one or more of the following methods or aspects thereof may be executed by at least one or more controllers. The term "controller" may refer to a hardware device including a memory and a processor. The memory is configured to store program instructions, and the processor is specifically programmed to execute the program instructions to perform one or more processes described in more detail below. The controller may control the operation of the units, modules, components, devices, etc. described herein. It can also be understood that the following methods may be executed by a device including a controller together with one or more other components, as will be understood by those skilled in the art.

[0038] In addition, the controller according to an embodiment of the present application may be implemented as a non-transitory computer-readable recording medium including executable program instructions executed by a processor. Examples of computer-readable recording media include ROM, RAM, CD-ROMs, magnetic tapes, floppy disks, flash drives, smart cards, and optical data storage devices, but the examples are not limited thereto. The computer-readable recording medium may also be distributed over a computer network so that the program instructions can be stored and executed in a distributed manner, for example, on a telematics server or a controller area network (CAN).

[0039] In the following, exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0040] Figure 1 is a block diagram of a system for acquiring images for a vehicle according to an embodiment of the present application.

[0041] As Figure 1 shown, a system for acquiring images for a vehicle according to an embodiment of the present application includes an illuminance sensor 10, a controller 20, and a device 30 for acquiring images according to another embodiment of the present application.

[0042] The illuminance sensor 10 is installed inside or outside the vehicle, detects the illuminance value of the interior environment or the exterior environment of the vehicle, and transmits the detected information to the controller 20.

[0043] The controller 20 is electrically connected to the illuminance sensor 10 and the device 30. The controller 20 is configured to receive information about the illuminance value of the interior environment or the exterior environment of the vehicle from the illuminance sensor 10, and compare the illuminance value of the interior environment or the exterior environment of the vehicle with a preset threshold. Here, the threshold may be affected by the interior structure of the vehicle, the area of the windshield, etc., so the threshold can be preset according to the type of vehicle.

[0044] When the controller 20 determines that the illuminance value of the interior environment or the exterior environment of the vehicle is equal to or higher than the preset threshold, the controller 20 sends a first control signal to the device 30 to cause the device 30 to operate in the daytime image acquisition mode. On the other hand, when the controller 20 determines that the illuminance value of the interior environment or the exterior environment of the vehicle is less than the preset threshold, the controller 20 sends a second control signal to the device 30 to cause the device 30 to operate in the nighttime image acquisition mode.

[0045] The controller 20 is configured to receive an image from the device 30 and process the image. In addition, the controller 20 can perform image recognition on the processed image, and transmit the processed image or the recognized image to the corresponding device. For example, when the device 30 acquires an image of a passenger's posture, and the controller 20 processes and recognizes the image of the passenger's posture, the controller 20 can transmit the processed image or the recognized image to the vehicle control system.

[0046] To implement the above functions, one or more microprocessors are provided on the controller 20, and the one or more microprocessors can be programmed to execute each step of the method for acquiring images for a vehicle according to another embodiment of the present application. Specifically, the controller 20 includes a memory, and the memory stores various algorithms for implementing the embodiments of the present application, such as image processing algorithms and image recognition algorithms. Since these different algorithms are well-known to those skilled in the art, further detailed descriptions will be omitted.

[0047] The device 30 acquires images of passengers or the like at a target location and transmits a signal regarding the images to the controller 20. The device 30 can operate in two modes: a daytime image acquisition mode and a nighttime image acquisition mode. When the device 30 receives a first control signal from the controller 20, the device 30 operates in the daytime image acquisition mode, and when the device 30 receives a second control signal from the controller 20, the device 30 operates in the nighttime image acquisition mode.

[0048] Hereinafter, with reference to Figures 2 to 4 , the device for acquiring images for a vehicle according to another embodiment of the present application will be described in more detail.

[0049] Figure 2 is a schematic diagram of a device for acquiring images for a vehicle according to another embodiment of the present application, Figure 3 schematically shows the Figure 2 inside of the device for acquiring images in the daytime image acquisition mode, Figure 4 schematically shows the Figure 2 inside of the device for acquiring images in the nighttime image acquisition mode.

[0050] As Figures 2 to 4 shown, according to another embodiment of the present application, the device 30 for acquiring images for a vehicle includes a housing 40, a lens 42, a filter 44, a sensor 46, an optical amplifier 48, an image signal processor 50, and at least two reflectors 52a, 52b, 52c, and 52d.

[0051] The housing 40 forms the exterior of the device 30 and provides a framework for integrating the components of the device 30 into one module. A space is formed in the housing 40 in which the respective components of the device 30 can be arranged. Accordingly, the filter 44, the sensor 46, the optical amplifier 48, the image signal processor 50, and at least two reflectors 52a, 52b, 52c, and 52d are arranged inside the housing 40.

[0052] The lens 42 is mounted on one surface of the housing 40. The light signal reflected from a passenger or an object at the target location passes through the lens 42 and enters the housing 40.

[0053] The filter 44 is configured to filter out noise and the like included in the optical signal passing through the lens 42. The optical signal passing through the filter 44 is transmitted to the sensor 46. Figures 2 to 4 Filtering of the optical signal passing through the lens 42 is shown in the daytime image acquisition mode, but the embodiments of the present application are not limited thereto. For example, it can be understood that even in the nighttime image acquisition mode, by adding the filter 44 on the optical signal path in the nighttime image acquisition mode, the optical signal passing through the lens 42 can be filtered. In this case, the optical signal passing through the filter 44 is transmitted to the sensor 46 or the optical amplifier 48.

[0054] The sensor 46 reads the signal (such as an image included in the optical signal). In addition, for example, the signal of the image is recorded in the sensor 46 so that the sensor 46 can acquire the signal (such as an image included in the optical signal). The signal (such as the image obtained from the sensor 46) is transmitted to the image signal processor 50.

[0055] The image signal processor 50 processes the signal (such as the image obtained from the sensor 46), and transmits the processed signal to the controller 20.

[0056] Since the lens 42, the filter 44, the sensor 46, and the image signal processor 50 are the same as those used in a normal digital video camera, further detailed description will be omitted.

[0057] The optical amplifier 48 is arranged on the path of the optical signal in the nighttime image acquisition mode and amplifies the optical signal passing through the lens 42 in the nighttime image acquisition mode. The optical signal amplified by the optical amplifier 48 is transmitted to the sensor 46.

[0058] At least two reflectors 52a, 52b, 52c, and 52d receive the first control signal or the second control signal from the controller 20 and rotate to a preset position according to the received first control signal or second control signal. As Figure 3 shown, when at least two reflectors 52a, 52b, 52c, and 52d receive the first control signal, at least two reflectors 52a, 52b, 52c, and 52d rotate to a preset position to obtain the daytime image acquisition mode. Accordingly, the optical signal passing through the lens 42 is transmitted to the sensor 46 without passing through the optical amplifier 48. As Figure 4 shown, when at least two reflectors 52a, 52b, 52c, and 52d receive the second control signal, at least two reflectors 52a, 52b, 52c, and 52d rotate to a preset position to obtain the nighttime image acquisition mode. Accordingly, the optical signal passing through the lens 42 passes through the optical amplifier 48 and then is transmitted to the sensor 46. Figures 2 to 4Four reflectors 52a, 52b, 52c, and 52d are shown, but the number of reflectors is not limited to four. The number of reflectors can be even so that the phase of the optical signal transmitted to the sensor 46 via the optical amplifier 48 is the same as the phase of the optical signal transmitted to the sensor 46 without passing through the optical amplifier 48.

[0059] In the example, when four reflectors 52a, 52b, 52c, and 52d are used, in the night image acquisition mode, the first reflector 52a is located downstream of the lens 42 such that the optical signal passing through the lens 42 is transmitted to the second reflector 52b, and the second reflector 52b transmits the optical signal reflected from the first reflector 52a to the optical amplifier 48. Additionally, the optical signal passing through the optical amplifier 48 is incident on the third reflector 52c, and the third reflector 52c transmits the optical signal to the fourth reflector 52d, and the fourth reflector 52d transmits the optical signal reflected from the third reflector 52c to the sensor 46. In the day image acquisition mode, the first reflector 52a and the third reflector 52c are arranged on the path of the optical signal in the day image acquisition mode, but they are rotated to positions where the path of the optical signal does not change. That is, the first reflector 52a and the third reflector 52c are rotated to positions where the first reflector 52a and the third reflector 52c do not meet the optical signal moving from the lens 42 to the sensor 46.

[0060] Therefore, the device 30 according to another embodiment of the present application adds at least two reflectors 52a, 52b, 52c, and 52d and an optical amplifier 48 inside the housing 40 of a typical device for acquiring images, and rotates at least two reflectors 52a, 52b, 52c, and 52d when the illuminance changes, so that image information can be stably acquired.

[0061] Hereinafter, Figure 5 A method for acquiring images for a vehicle according to another embodiment of the present application will be described in detail.

[0062] Figure 5 is a flowchart of a method for acquiring images for a vehicle according to another embodiment of the present application.

[0063] As Figure 5 shown, for a method for acquiring images for a vehicle according to another embodiment of the present application, first, in step S100, an illuminance sensor 10 detects the illuminance value of the internal environment or the external environment of the vehicle. The illuminance sensor 10 transmits the detected illuminance value of the internal environment or the external environment of the vehicle to the controller 20.

[0064] When receiving the illuminance value of the internal environment or the external environment of the vehicle, in step S110, the controller 20 determines whether the illuminance value is greater than or equal to a preset threshold.

[0065] When it is determined in step S110 that the illuminance value is greater than or equal to a preset threshold, the controller 20 generates a first control signal and transmits the generated first control signal to the device 30. Accordingly, in step S120, the device 30 operates in the daytime image acquisition mode. That is, as Figure 3 shown, at least two reflectors 52a, 52b, 52c, and 52d rotate to positions set for the daytime image acquisition mode, and the optical signal passing through the lens 42 is transmitted to the sensor 46 without passing through the optical amplifier 48.

[0066] When it is determined in step S110 that the illuminance value is less than the preset threshold, the controller 20 generates a second control signal and transmits the generated second control signal to the device 30. Accordingly, in step S130, the device 30 operates in the nighttime image acquisition mode. That is, as Figure 4 shown, at least two reflectors 52a, 52b, 52c, and 52d rotate to positions set for the nighttime image acquisition mode, and the optical signal passing through the lens 42 passes through the optical amplifier 48 and then is transmitted to the sensor 46.

[0067] Upon receiving the optical signal that has passed through the optical amplifier 48 or the optical signal that has not passed through the optical amplifier 48, the sensor 46 reads the signal (e.g., an image included in the optical signal) and determines in step S140 whether the image has been acquired.

[0068] When the sensor 46 acquires an image in step S140, in step S150, the image signal processor 50 processes the image and transmits the processed image to the controller 20. In step S160, the controller 20 transmits the processed image to the corresponding device.

[0069] When the sensor 46 fails to acquire an image in step S140, the method returns to step S100, and the illuminance sensor 10 continues to detect the illuminance value in step S100.

[0070] Although the embodiments of the present invention have been described in conjunction with currently considered practical exemplary embodiments, it should be understood that the present invention is not limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and equivalent schemes included within the spirit and scope of the appended claims.

Claims

1. A device for acquiring an image of a vehicle, the device comprising: case; a lens mounted on a surface of the housing, the lens being configured to allow an optical signal from a target location to pass therethrough; an optical amplifier configured to amplify an optical signal passing through the lens; a sensor configured to acquire an image signal contained in the optical signal; an image signal processor configured to process an image signal acquired by the sensor; as well as A plurality of reflectors are configured to be rotatable between positions set for a night image acquisition mode and positions set for a day image acquisition mode, wherein in the night image acquisition mode, the positions of the reflectors are set so that the light signal passing through the lens is transmitted to the sensor after passing through the optical amplifier, and in the day image acquisition mode, the positions of the reflectors are set so that the light signal passing through the lens is transmitted to the sensor without passing through the optical amplifier. 2 . The apparatus for acquiring an image for a vehicle according to claim 1 , further comprising a filter configured to filter the optical signal passing through the lens. 3 .

3. The device for acquiring images of a vehicle according to claim 2, wherein: The filter is configured to filter the light signal in a daytime image acquisition mode. 4 . The apparatus for acquiring an image for a vehicle according to claim 1 , comprising an even number of reflectors.

5. A system for acquiring images of a vehicle, the system comprising: an illumination sensor configured to detect an illumination value of an interior environment of the vehicle or an exterior environment of the vehicle; a controller configured to receive an illumination value from an illumination sensor, compare the illumination value with a preset threshold, and generate a first control signal in response to the illumination value being greater than or equal to the preset threshold, and generate a second control signal in response to the illumination value being less than the preset threshold; as well as An image acquisition device, comprising: a lens configured to allow the optical signal to pass therethrough; an optical amplifier configured to receive and amplify an optical signal; a sensor configured to acquire an image signal contained in the optical signal; and a plurality of reflectors configured to change the path of an optical signal passing through the lens; Wherein, when the image acquisition device receives a first control signal from the controller, the reflector is configured to be controlled so that the optical signal passing through the lens is transmitted to the sensor without passing through the optical amplifier; In the case where the image acquisition device receives a second control signal from the controller, the reflector is configured to be controlled so that the optical signal passing through the lens passes through the optical amplifier before being transmitted to the sensor.

6. The system for acquiring images of a vehicle according to claim 5, wherein: The image acquisition device further includes a filter configured to filter the light signal passing through the lens.

7. The system for acquiring images of a vehicle according to claim 6, wherein: The filter is configured to filter the light signal in a daytime image acquisition mode.

8. The system for acquiring images of a vehicle according to claim 5, wherein: The image acquisition device includes an even number of reflectors.

9. The system for acquiring images of a vehicle according to claim 5, wherein: The preset threshold is preset according to the type of vehicle.

10. The system for acquiring images of a vehicle according to claim 5, wherein: The image acquisition device further includes an image signal processor configured to process an image signal acquired by the sensor and transmit the processed image signal to the controller.

11. The system for acquiring images of a vehicle according to claim 10, wherein: The controller is further configured to transmit the processed image to a corresponding device.

12. A method for acquiring an image of a vehicle, the method comprising: Detecting the illumination value of the internal environment of the vehicle or the external environment of the vehicle through an illumination sensor; In response to receiving the illumination value, comparing, by the controller, the illumination value of the interior environment or the exterior environment of the vehicle with a preset threshold; In response to the illumination value being greater than or equal to a preset threshold, generating a first control signal through a controller, and transmitting the generated first control signal to an image acquisition device; In response to receiving the first control signal, the image acquisition device operates in a daytime image acquisition mode; Wherein, the image acquisition device includes: a lens that allows the light signal to pass through, an optical amplifier, a sensor that acquires an image signal contained in the light signal, and a plurality of reflectors that can change the path of the light signal passing through the lens; Working in the daytime image acquisition mode includes: the image acquisition device controls the position of the reflector so that the light signal passing through the lens is transmitted to the sensor without passing through the light amplifier.

13. The method for acquiring an image for a vehicle according to claim 12, further comprising: In response to the illumination value being less than a preset threshold, generating a second control signal through the controller, and transmitting the generated second control signal to the image acquisition device; In response to receiving the second control signal, the image acquisition device operates in a night image acquisition mode, wherein operating in the night image acquisition mode includes: the image acquisition device controls the reflector so that the light signal passing through the lens passes through the light amplifier before being transmitted to the sensor.

14. The method for acquiring an image for a vehicle according to claim 13, wherein: The image acquisition device further includes a filter that filters the optical signal passing through the lens.

15. The method for acquiring an image for a vehicle according to claim 14, wherein: The filter filters the light signal in the daytime image acquisition mode.

16. The method for acquiring an image for a vehicle according to claim 12, wherein: The preset threshold is preset according to the type of vehicle.

17. The method for acquiring an image for a vehicle according to claim 12, wherein: The image acquisition device further includes an image signal processor that processes an image signal acquired by the sensor and transmits the processed image signal to the controller. 18 . The method for acquiring an image for a vehicle according to claim 17 , further comprising transmitting the processed image to a corresponding device through the controller.

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