Visual testing method and device for display information in automobile

Abstract

The invention provides a visual testing method and equipment for display information in an automobile, and relates to the technical field of visual testing. The method provided by the invention comprises the following steps: photographing an information display area through an image acquisition instrument to obtain a target image; identifying display information from the target image, and judging whether the display information has double images or not; if no ghosting exists, determining a first visual size of the display information body, and determining a body view angle of the display information according to the first visual size; if the display information body has the double image, determining a first visual size of the display information body and a second visual size of the double image of the display information, and determining a double view angle of the display information according to the first visual size and the second visual size; and performing visual testing on display information according to the body view angle and the duplicate view angle. According to the invention, the performance of in-vehicle visual display can be tested, and whether information content can be expressed timely and effectively or not is judged.

Description

Technical Field

[0001] The present invention relates to the field of visual testing technology, and in particular to a method and equipment for visual testing of information displayed inside a car. Background Art

[0002] With the iteration of intelligent technology and the leap forward in consumer demand for cars, since visual cognition ranks first and accounts for the largest proportion among the five senses, the in-car display terminals are becoming more and more abundant. Various real-image and virtual-image display terminals serve as the basic carriers and typical representatives of intelligent interaction, providing drivers and passengers with a variety of visual display information including necessary driving data, such as turn icons, warning texts, vehicle speed numbers, etc.

[0003] As visual display information is the core carrier of interaction between vehicles and drivers and passengers, the effectiveness, timeliness and readability of its information expression are crucial for drivers and passengers to obtain necessary driving data in real time, which directly affects the driving safety of the entire vehicle. There is no performance test method for visual display information in the prior art. Summary of the invention

[0004] In view of the above problems, the present invention proposes a visual testing method and device for information displayed in a car, so as to test the performance of the visual display in the car and determine whether the information content can be expressed in a timely and effective manner.

[0005] In a first aspect, an embodiment of the present invention provides a method for visually testing information displayed in a vehicle, comprising: The information display area is photographed by an image acquisition instrument to obtain a target image; Identifying display information from the target image, and determining whether the display information has ghosting; If there is no ghosting, determining a first visual size of the display information body, and determining a viewing angle of the display information body according to the first visual size; If there is a ghost, determine a first visual size of the display information body and a second visual size of the display information ghost, and determine a ghost viewing angle of the display information according to the first visual size and the second visual size; A visual test is performed on the displayed information according to the main viewing angle and the ghost viewing angle.

[0006] In a second aspect, an embodiment of the present invention provides a device, including: a controller, a laser rangefinder, an image acquisition instrument, and a bionic robot support system; The laser rangefinder is installed on the image acquisition instrument and is used to measure the vertical distance between the lens of the image acquisition instrument and the lens of the information display area. The vertical distance of the lens is added to the internal distance from the end of the lens of the image acquisition instrument to the imaging point to obtain the vertical distance between the imaging point of the image acquisition instrument and the information display area. The bionic robot support system is used to adjust the position and posture of the image acquisition instrument to take pictures of the information display area according to the specified position and posture; The controller is used to execute the visual testing method for the in-vehicle display information described in any one of the embodiments.

[0007] Compared with the prior art, the embodiments of the present invention have the following technical effects: 1. The present invention aims to propose an implementable test layout and testing method for objectively quantifying the visual performance of in-vehicle display information, and the quantified results are consistent with visual perception, so as to break through the drawback that the evaluation of the human-machine interface in the car is mainly subjective, and realize the use of quantitative data to guide the quality improvement and performance improvement of the in-vehicle display terminal, and realize the comparative analysis of quantitative data among multiple vehicles. The method principle is highly extensible and can be applied to various in-vehicle visual size test and evaluation needs.

[0008] 2. The solution provided by the present invention provides a calculation and quantification result of the visual size of the displayed information based on simulating the human observation posture of the information display area and combining the geometric processing method of optical images. The result is in units of angular minutes and is usually in the range of (10~50) arcmin, which fully indicates the size index of a certain display information in the human field of vision, and the expression method is simple.

[0009] 3. The solution provided by the present invention is based on the basic principles of optical imaging scaling and ratio, and combines the restricted posture of people in the in-vehicle visual information display area. Therefore, this method is not only limited to the test and evaluation of the visual size of the display information of the in-vehicle display terminals such as the driver's visual instrument, central control screen, head-up display system HUD, etc., but can also be applied to the test and evaluation of the visual size of display information in various scenarios such as the front passenger's visual view of the central control screen, the co-pilot screen, and the rear passenger's visual view of the central control screen, the co-pilot screen, and the rear screen; at the same time, based on the principle of consistency, only the definitions of different evaluation objects need to be replaced. The method described in the present invention can also be applied to the visual size test and evaluation of various types of display information such as character / symbol aspect ratio, stroke width-to-height ratio, character spacing, and character / symbol line spacing.

[0010] 4. The solution provided by the present invention provides a test layout and construction solution that can be used continuously and a consistent test method for key indicators of readability of in-vehicle display information such as the display information main body viewing angle and the ghosting viewing angle. The equipment used in the solution is conventional laboratory equipment and does not require additional customization, which can effectively reduce testing investment. The original data in the provided method is easy to locate and obtain, and no complex calculations are involved in the subsequent process. Therefore, the method provided by the present invention is feasible and easy to implement as a whole.

[0011] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above description and other purposes, features and advantages of the present invention more obvious and easy to understand, the preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 A flow chart of a method for visually testing information displayed in a vehicle provided by an embodiment of the present invention; Figure 2 A schematic diagram of a target image provided by an embodiment of the present invention; Figure 3 Schematic diagram of the main body and ghost image of display information "0" provided by an embodiment of the present invention Figure 4 A schematic diagram of a body width viewing angle and a body height viewing angle provided by an embodiment of the present invention; Figure 5 A schematic diagram of the width and height of the display information “6” provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0013] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0014] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0015] Example 1 The embodiment of the present invention provides a visual testing method for information displayed in a car, which is suitable for testing the readability of information displayed in the car. Figure 1 , including the following steps: S110, taking a picture of the information display area by an image acquisition device to obtain a target image.

[0016] The image acquisition instrument has no obvious imaging distortion and the imaging field angle is fixed. Place the image acquisition instrument at the required eye point position (i.e. the eye position of the driver / passenger in the car). Specifically, the imaging point inside the image acquisition instrument should coincide with the required eye point position in space. Let the image acquisition instrument rotate around its imaging point until the optical axis of the image acquisition instrument points to the center of a certain screen to be tested on the information display area, and the center point of the screen to be tested and the imaging point of the image acquisition instrument are both on the optical axis ray of the image acquisition instrument (or let the image acquisition instrument rotate around other spatial positions until the optical axis of the image acquisition instrument points to the center of a certain screen to be tested on the information display area, and the center point of the screen to be tested, the imaging point of the image acquisition instrument, and the above-mentioned other spatial positions are all on the straight line of the optical axis of the image acquisition instrument).

[0017] The information display area is the area that carries the in-vehicle display information, which can be a virtual area or a physical display area, such as a real image or virtual image display terminal such as a car cockpit display screen and a head-up display system HUD. The in-vehicle display information refers to the characters and symbols in the electronic image presented by the display terminal to the driver and passengers.

[0018] Control the image acquisition instrument to take a picture of the information display area to obtain the target image. In some examples, in order to highlight the display information in the target image, the vehicle is driven into the optical darkroom test site and parked in advance. The ground lighting of the site should be controlled at (1±1) lx (unit: lux); activate the vehicle and light up the information display area, select the screen to be tested, and the brightness level of the information display area should be under vehicle automatic control (if any, turn on the brightness self-adjustment function of the information display area), or manually adjusted to the minimum. For target images taken in a darkroom, see Figure 2As shown, the displayed information can be clearly seen, including the vehicle speed of 0 and the navigation arrow pointing to the right.

[0019] S120: Identify display information from the target image, and determine whether the display information has ghosting.

[0020] Use image processing algorithms to identify display information. For example, use a neural network-based target recognition algorithm to identify display information. Figure 2 The identified display information is marked with a dotted frame; or the display information is determined by extracting pixels whose brightness exceeds a threshold. HUD and other devices generally display virtual images, and the probability of ghosting is relatively high. Figure 3 , showing the body and ghost of character 0. The brightness of the ghost is generally lower than that of the body. Based on this, after all the pixel points of the characters are identified, the brightness of each pixel point can be determined. If there is a pixel point with a brightness lower than the ghost threshold, it is considered that there is a ghost.

[0021] S130: If there is no ghosting, determine a first visual size of the display information body, and determine a viewing angle of the display information body according to the first visual size.

[0022] The first visual size is the width (horizontal) and height (vertical) of the display information body displayed in the target image; accordingly, the body viewing angle includes the body height viewing angle and the body width viewing angle. The body height viewing angle is the viewing angle occupied by the height direction of the body, that is, the viewing angle when viewing the body in the height direction. Specifically, a line is drawn between the two ends of the height of the body and the required eye point position, and the angle between the two lines is the body height viewing angle. The body width viewing angle is the viewing angle occupied by the width direction of the body, that is, the viewing angle when viewing the body in the width direction. Specifically, a line is drawn between the two ends of the width of the body and the required eye point position, and the angle between the two lines is the body width viewing angle. Determine the body viewing angle by any of the following implementations. See specifically. Figure 3 shown.

[0023] The first implementation method is to calculate the main body viewing angle based on the scaling ratio.

[0024] 1.1. Obtain a scaling ratio of the target image relative to the information display area.

[0025] Specifically, a marking bar is set in advance on the information display area; and the scaling ratio of the target image relative to the information display area is calculated according to the real length of the marking bar and the visual length in the target image.

[0026] Specifically, two real lengths are attached to the surface of the information display area. , The flexible strip has a width of (1.5±0.5) cm, and should be an integer value within 5~10 cm. The flexible strip is attached to the edge of the surface of the area along the length and height directions of the surface of the area, and the flexible strip should be perpendicular and parallel to the height direction of the display information to be tested in the screen to be tested. In the collected target image, at the same magnification ratio, measure The visual length of the flexible strip is , The visual length of the flexible strip is , the visual height of the displayed information in the target image is , the visual width is Calculate the horizontal scaling ratio according to formula (1): , Formula (2) calculates the vertical scaling ratio : ; (1) ; (2) 1.2. Obtain the vertical distance between the imaging point of the image acquisition instrument and the information display area.

[0027] Measure the observation distance from the imaging point of the image acquisition instrument to the center point of the measured image, that is, the vertical distance, and record it as d Specifically, the laser rangefinder is installed on the image acquisition instrument to measure the vertical distance between the lens of the image acquisition instrument and the information display area. The vertical distance of the lens is added to the internal distance (known) from the end of the lens of the image acquisition instrument to the imaging point to obtain the vertical distance between the imaging point of the image acquisition instrument and the information display area.

[0028] 1.3. Calculate the main body height viewing angle and the main body width viewing angle of the displayed information according to the scaling ratio, the vertical distance and the first visual size.

[0029] According to formula (3), the height viewing angle of the display information is calculated. , calculate the body width and viewing angle of the displayed information according to formula (4): For details, see Figure 4 .

[0030] ; (3) ; (4) in, and The unit of is arc minutes, and and The calculated unit is degree, so formulas (3) and (4) need to be multiplied by 60.

[0031] The second implementation method is to calculate the main body viewing angle based on the number of all pixels in the target image.

[0032] 2.1. Obtain the overall height field of view of the image acquisition instrument and overall width viewing angle .

[0033] 2.2. Obtain the overall height and width of the target image, which are specifically expressed by the horizontal pixel number X and the vertical pixel number Y. Define the pixel coordinates of the upper left corner of the target image captured by the image acquisition instrument as (0,0). Based on the positive accumulation of the number of pixels from (0,0), locate the coordinates of any pixel in the target image, such as the horizontal pixel number , Vertical Pixels , then the pixel coordinates of the lower right corner in the target image are ( , ).

[0034] 2.3. Calculate the height angle of the display information according to the overall height angle of view, the overall height and the height of the display information on the target image. Calculate the width angle of the display information according to the overall width angle of view, the overall width and the width of the display information on the target image.

[0035] Assumptions, see Figure 5 , the starting and ending pixel coordinates of the display information in the width direction are ( , )、( , ), the starting and ending pixel coordinates of the display information in the height direction are ( , )、( , ). Calculate the body height viewing angle of the displayed information of the character or symbol to be tested according to formula (5): , calculate the body width and viewing angle of the displayed information of the character or symbol to be tested according to formula (6): .

[0036] ; (5) ; (6) in, and The unit is arc minutes.

[0037] S140: If there is ghosting, determine a first visual size of the display information body and a second visual size of the ghosting of the display information, and determine a ghosting viewing angle of the display information according to the first visual size and the second visual size.

[0038] Specifically, a pixel set of display information on a target image is determined; the pixel set is divided into main body pixels and ghost pixels; a first visual size of the display information main body is determined according to the main body pixels, and a second visual size of the display information ghost is determined according to the ghost pixels. After all the pixel points of the characters are identified, the pixel points of the same character are constructed into a pixel set, and then the brightness of each pixel point is determined, and the display information composed of the pixel points whose brightness is less than the ghost threshold is determined as the display information ghost. Figure 3 The main body and ghost of the display information "0" are shown. The second visual size of the ghost includes the width and height of the ghost in the target image. The ghost height field angle is the field angle occupied by the ghost height direction, that is, the field angle when viewing the ghost in the height direction. Specifically, the two ends of the ghost height are drawn with the required eye point position, and the angle between the two lines is the ghost height field angle. The ghost width field angle is the field angle occupied by the ghost width direction, that is, the field angle when viewing the ghost in the width direction. Specifically, the two ends of the ghost width are drawn with the required eye point position, and the angle between the two lines is the ghost width field angle.

[0039] It should be noted that the visual size of the display information body and the display information ghost can also be identified by using a neural network-based target recognition model.

[0040] Optionally, determining the ghosting viewing angle of the display information according to the first visual size and the second visual size includes the following process: 3.1. Obtain the overall height field of view of the image acquisition instrument and overall width viewing angle .

[0041] 3.2 Obtain the overall height and width of the target image; specifically, use the horizontal pixel number X and the vertical pixel number Y to represent it.

[0042] 3.3 Calculate the ghost deviation height and ghost deviation width according to the first visual size and the second visual size. Calculate the ghost height viewing angle of the displayed information according to the overall height viewing angle, the overall height and the ghost deviation height; calculate the ghost width viewing angle of the displayed information according to the overall width viewing angle, the overall width and the ghost deviation width.

[0043] After identifying the display information body, the pixel set occupied by the display information body is obtained; after identifying the display information ghost, the pixel set occupied by the display information ghost is obtained. In these two pixel sets, the pixel coordinates of the same position are determined, such as the upper left corner pixel coordinates, the upper right corner pixel coordinates, the lower left corner pixel coordinates, and the lower right corner pixel coordinates, so as to find the same corner point position on the body and the ghost. Assume that the pixel coordinates of a corner point of the body are ( ， ), the pixel coordinates of the ghost at the same position are ( ， ). Subtract the horizontal pixels in the pixel coordinates of the same position to obtain a ghost deviation width, and subtract the vertical pixels to obtain a ghost deviation height. Calculate the ghost height field of view angle of the displayed information according to (7). , calculate the ghost width and viewing angle of the displayed information according to formula (8) : ; (7) ; (8) in, and The unit is arc minutes.

[0044] Similarly, the ghost height viewing angles of the upper left corner, the lower left corner, the upper right corner, and the lower right corner are calculated respectively, and the largest ghost height viewing angle is taken as the ghost height viewing angle of the final display information. The ghost width viewing angles of the upper left corner, the lower left corner, the upper right corner, and the lower right corner are calculated respectively, and the largest ghost width viewing angle is taken as the ghost width viewing angle of the final display information.

[0045] S150: Perform visual testing on the displayed information according to the main body viewing angle and the ghost viewing angle.

[0046] Optionally, the main body viewing angle (including the height viewing angle and the width viewing angle) and the ghost viewing angle (including the height viewing angle and the width viewing angle) are compared with preset, respectively corresponding thresholds. If they are greater than or equal to the respective corresponding thresholds, the visual test is passed. If any of the viewing angles is less than the corresponding threshold, the visual test is not passed.

[0047] Furthermore, the preset threshold is obtained through the following process: determining the operating scenario of the vehicle; and determining the threshold according to the operating scenario and the type of the information display area.

[0048] If the vehicle is in parking state and the speed is 0, the preset threshold is lowered; if the vehicle is in driving state, the preset threshold is raised to display the information content clearly and timely. The preset threshold corresponding to the displayed information on the HUD should be higher than the preset threshold of other information display areas, because the HUD is located in front of the driver's field of vision, and the displayed content is strongly related to the driving scene, which needs to be clearer and reduce the probability of ghosting.

[0049] Compared with the prior art, the present invention uses ghosting viewing angle and main body viewing angle as indicators for visual performance testing. This is because: the readability of visual display information, according to the principle of human vision, is mainly affected by ① the size of the visual display information itself, ② the light and dark contrast with the background, ③ the degree of information focus, ④ the distance between the information and the human eye, and ⑤ the light environment. Among them, ① and ④ are the main body height viewing angle and the main body width viewing angle of the display information affected by the basic parameters, that is, the test indicators corresponding to the visual size. Because objects / information that are large enough can be recognized and interpreted by the human eye, they are the most important indicators related to the readability of display information. In addition, ③ and ④ are the basic parameters affecting the ghosting height angle / ghosting width angle of the display information, i.e., the test index of visual ghosting of the display information. This is a unique and severe phenomenon of emerging virtual image display terminals such as head-up display (HUD). This kind of virtual overlapping additional image will directly increase the visual burden of the driver and even cause visual damage, and further increase the length of time the driver's line of sight stays on the HUD virtual image display information and cause the necessary driving data perception to be blocked. Therefore, the ghosting height angle / ghosting width angle of the display information is a particularly important parameter in the index parameters related to the readability of the virtual image display information. Based on the above description, the present invention defines a comprehensive evaluation test method that is not limited by visual distance and accurately indicates the visual perception of the human eye, and conducts objective quantitative testing on the in-vehicle display terminal of the automobile as a reference and basis for its quality improvement and performance improvement.

[0050] Example 2 This embodiment provides a visual testing device for displaying information inside a car, including: a controller, a laser rangefinder, an image acquisition instrument, and a bionic robot support system.

[0051] Wherein, the laser rangefinder is installed on the image acquisition instrument to measure the vertical distance between the lens of the image acquisition instrument and the lens of the information display area. The vertical distance of the lens is added to the internal distance from the end of the lens of the image acquisition instrument to the imaging point to obtain the vertical distance between the imaging point of the image acquisition instrument and the information display area. Optionally, the image acquisition instrument can be a Nikon D850 full-frame SLR camera with a 50mm f / 1.8 lens, or an IC-PMI16-XBND3 imaging brightness meter with an EL-0050R 50 mm electronic focus lens (pixel resolution is 4896×3264≈16 million pixels).

[0052] The bionic robot support system is used to adjust the position and posture of the image acquisition instrument to take pictures of the information display area according to the specified position and posture. Optionally, the bionic robot support system is a SAGITTARIUS Ⅰ type image acquisition eye point reproduction device.

[0053] The controller is used to execute the visual testing method for the in-vehicle display information provided by the above embodiment.

[0054] The device is placed in the vehicle under test, the vehicle under test is placed in an optical darkroom, and the brightness self-adjustment function of the information display area is turned on. Specifically, the brightness self-adjustment function of the information display area is turned on, and all light sources in the test area are turned off to form a darkroom.

[0055] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A visual testing method for information displayed in a car, characterized in that: The information display area is photographed by an image acquisition instrument to obtain a target image; Identifying display information from the target image, and determining whether the display information has ghosting; If there is no ghosting, determining a first visual size of the display information body, and determining a body viewing angle of the display information according to the first visual size; If there is a ghost, determine a first visual size of the display information body and a second visual size of the display information ghost, and determine a ghost viewing angle of the display information according to the first visual size and the second visual size; A visual test is performed on the displayed information according to the main viewing angle and the ghost viewing angle.

2. The method according to claim 1, characterized in that The first visual size is the height and width of the displayed information on the target image; Determining a main body viewing angle of the display information according to the first visual size includes: Acquire a scaling ratio of the target image relative to the information display area; Obtaining the vertical distance between the imaging point of the image acquisition instrument and the information display area; The body height viewing angle and the body width viewing angle of the displayed information are calculated according to the scaling ratio, the vertical distance and the first visual size.

3. The method according to claim 2, characterized in that Determining a main body viewing angle of the display information according to the first visual size includes: Obtaining the overall height viewing angle and the overall width viewing angle of the image acquisition instrument; Obtaining the overall height and overall width of the target image; Calculating the body height viewing angle of the display information according to the overall height viewing angle, the overall height, and the height of the display information on the target image; The body width viewing angle of the display information is calculated according to the overall width viewing angle, the overall width, and the width of the display information on the target image.

4. The method according to claim 2, characterized in that: Acquiring a scaling ratio of the target image relative to the information display area includes: Pre-setting a marking bar on the information display area; The scaling ratio of the target image relative to the information display area is calculated according to the real length of the marking bar and the visual length in the target image.

5. The method according to claim 1, characterized in that Determining a first visual size of the display information body and a second visual size of the display information ghost includes: Determine a pixel set of information displayed on the target image; Dividing the pixel set into main pixels and ghost pixels; A first visual size of the display information body is determined according to the body pixels, and a second visual size of the display information ghost is determined according to the ghost pixels.

6. The method according to claim 1, characterized in that Determining the ghosting viewing angle of the display information according to the first visual size and the second visual size includes: Obtaining the overall height viewing angle and the overall width viewing angle of the image acquisition instrument; Obtaining the overall height and overall width of the target image; Calculating a ghost deviation height and a ghost deviation width according to the first visual size and the second visual size; Calculating the ghost height viewing angle of the display information according to the overall height viewing angle, the overall height and the ghost deviation height; The ghost width viewing angle of the display information is calculated according to the overall width viewing angle, the overall width and the ghost deviation width.

7. The method according to claim 1, characterized in that According to the main body viewing angle and the ghost viewing angle, a visual test is performed on the display information, including: The main body viewing angle and the ghost viewing angle are compared with a preset threshold value, and if they are greater than or equal to the preset threshold value, the visual test is passed.

8. The method according to claim 7, characterized in that The preset threshold is obtained through the following process: Determine the vehicle's operating scenario; The threshold is determined according to the operation scenario and the type of the information display area.

9. A visual testing device for displaying information in a car, characterized in that: include: Controller, laser rangefinder, image acquisition instrument, bionic robot support system; The laser rangefinder is installed on the image acquisition instrument and is used to measure the vertical distance between the lens of the image acquisition instrument and the lens of the information display area. The vertical distance of the lens is added to the internal distance from the end of the lens of the image acquisition instrument to the imaging point to obtain the vertical distance between the imaging point of the image acquisition instrument and the information display area. The bionic robot support system is used to adjust the position and posture of the image acquisition instrument to take pictures of the information display area according to the specified position and posture; The controller is used to execute the visual testing method for automobile in-vehicle display information as described in any one of claims 1-8.

10. The device according to claim 9, characterized in that The device is placed in a tested vehicle, the tested vehicle is placed in an optical darkroom, and the brightness self-adjustment function of the information display area is turned on.

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