Oblique front view checking and evaluating method, system and device

Abstract

The invention relates to the technical field of vehicle visual field evaluation, in particular to an oblique front visual field checking and evaluating method, system and device, and the method comprises the steps: setting an obstacle plane in the sight range of a driver, and carrying out the grid division of the obstacle plane; the positions of eye spots are determined, a plurality of radiation sections are generated with the eye spots as end points, and the radiation sections are planes tangent to the non-transparent position of the vehicle body; determining an observable area according to intersecting lines of the plurality of radiation sections extending to the obstacle plane and the obstacle plane, and counting visible grids which are all grids corresponding to the observable area; and according to a score assignment rule, assigning scores to the visual grids, and taking the sum of scores of all grids corresponding to the visual grids as a visual field evaluation score. According to the method, subjective evaluation perception is quantified, the effective view area can be accurately and effectively determined in the early stage of design and evaluated, the probability of setting change caused by design problems occurring in later real vehicle verification is reduced, the performance and quality of the vehicle are guaranteed, and the development period and cost are shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle vision evaluation, and in particular to a method, system and device for evaluating oblique front vision verification. Background Art

[0002] The main purpose of visual field verification and evaluation is to avoid or minimize blind spots. Blind spots are mainly pillar blind spots (A\B\C\D pillars). For example, when the A-pillar blind spot is too large, there may be a safety accident if there are people or vehicles moving in the blind spot. At present, relevant standards have regulations on the A-pillar blind spot, but only stipulate that the A-pillar obstacle angle for measuring the A-pillar blind spot cannot be greater than 6°. However, an A-pillar obstacle angle less than 6° may still cause a large A-pillar blind spot, which becomes a safety hazard when driving. There are no regulations for the remaining pillars.

[0003] During the vehicle design process, field of view, as an important human-machine performance factor, needs to be guaranteed. Verification of whether it meets customer needs mainly relies on comparison with competing products and subjective evaluation of actual vehicles. Currently, there is no evaluation method that combines human subjectivity with data design. Summary of the invention

[0004] The purpose of the present invention is to address the defects of the prior art and provide a method, system and device for verifying and evaluating the oblique forward field of view, which quantifies subjective evaluation perceptions and combines human subjectivity with data design. In the early stage of design, the effective field of view area can be accurately and effectively determined and evaluated, thereby reducing the probability of design changes caused by design problems in later actual vehicle verification, ensuring the performance and quality of the vehicle and shortening the development cycle and cost.

[0005] In order to solve the above technical problems, the present invention provides a method for evaluating the oblique front visual field, comprising:

[0006] An obstacle plane is set within the driver's field of vision and the obstacle plane is divided into grids;

[0007] Determine the eye point position, and generate multiple radial sections with the eye point as the endpoint, where the radial sections are surfaces tangent to the opaque position of the vehicle body;

[0008] According to the intersection lines of multiple radial sections extending to the obstacle plane and the obstacle plane, the observable area is determined, and the visible grids are counted. The visible grids are all the grids corresponding to the observable area.

[0009] According to the scoring rules, the visible grid is scored, and the sum of the scores of all grids corresponding to the visible grid is used as the field of view evaluation score.

[0010] Furthermore, the method for generating the radial section includes: drawing a plurality of rays from the eye point as an end point toward the boundary line of the opaque position of the vehicle body, and the surface formed by the plurality of rays is the radial section.

[0011] In some embodiments, the scoring rule includes: differentially scoring the grids of the obstacle plane along the height direction, the higher the height, the lower the score.

[0012] Further, the visible grid includes grids located within the intersection lines of the plurality of radial slices and the obstacle plane and grids intersecting with the intersection lines of the plurality of radial slices and the obstacle plane.

[0013] In some embodiments, the obstacle planes are arranged on both sides and in front of the vehicle.

[0014] Furthermore, the obstacle planes are set at three positions: 1 meter on the left side of the vehicle, 2.5 meters on the right side, and 1 meter in front. The length of the obstacle planes on both sides of the vehicle is equal to the vehicle length and the height is 1 meter. The length of the obstacle plane in front of the vehicle is equal to the vehicle width and the height is 1 meter.

[0015] In some embodiments, the method for determining the eye point position is: when the distance between point H and the ground is less than 560 mm, the X coordinate of the eye point is the X coordinate of point H, and the Z coordinate of the eye point is the Z coordinate of point H plus 635 mm; when the distance between point H and the ground is greater than or equal to 560 mm, the X coordinate of the eye point is the X coordinate of point H minus 17.5 mm, and the Z coordinate of the eye point is the Z coordinate of point H plus 640 mm.

[0016] In a second aspect, the present invention provides an oblique forward visual field verification and evaluation system, comprising: an obstacle plane generation module, an eye point position and radial section generation module, a visual grid determination module, and an evaluation module, wherein the obstacle plane generation module is used to generate an obstacle plane within the driver's field of vision, the eye point position and radial section generation module is used to generate an eye point position according to set parameters, and generate a radial section according to the eye point position and the opaque position of the vehicle body, the visual grid determination module is used to determine a visible grid according to the radial section, and the evaluation module is used to calculate the visual field evaluation score of the visible grid.

[0017] In a third aspect, the present invention provides a non-transitory computer-readable storage medium for storing a computer program or instruction. When the computer program or instruction is executed by a computer, the method for verifying and evaluating the oblique forward visual field as described in any one of claims 1 to 7 is implemented.

[0018] In a fourth aspect, the present invention provides a computer program product, which includes computer instructions; when part or all of the computer instructions are run on a computer, the method for verifying and evaluating the oblique forward visual field as described in any one of claims 1 to 7 is executed.

[0019] The beneficial effects of the present invention are as follows: the present invention quantifies subjective evaluation perception into parameters, and preliminarily judges the quality of the single oblique front view through data statistics and comparison in the early stage of design, determines the target value, and obtains the optimal layout plan. By accurately and effectively determining the effective field of view area in the early stage of design and evaluating it, the probability of design changes caused by design problems in the later actual vehicle verification can be reduced, the performance and quality of the vehicle are guaranteed, and the development cycle and cost are shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of a radial section of the present invention;

[0021] Figure 2 Schematic diagram for determining a visual grid for the present invention

[0022] Figure 3 It is a schematic diagram of the coordinate axis of the present invention. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] The present invention provides a method for evaluating an oblique front visual field, comprising:

[0025] S1. Set an obstacle plane within the driver's field of vision and divide the obstacle plane into grids;

[0026] In the present invention, the driver's field of vision includes both sides and the front of the vehicle. The obstacle planes are set at three positions: 1 meter on the left side of the vehicle, 2.5 meters on the right side, and 1 meter in front. The length of the obstacle planes on both sides of the vehicle is equal to the vehicle length and the height is 1 meter. The length of the obstacle plane in front of the vehicle is equal to the vehicle width and the height is 1 meter.

[0027] The distance of the obstacle plane set on the left side of the vehicle is based on the distance from the driver's blind spot to the roadside, and the present invention adopts 1m;

[0028] The distance of the obstacle plane set on the right side of the vehicle is based on the standard lane width, and the present invention adopts 2.5m;

[0029] The height of the obstacle plane takes into account children under 1m in height. If the height is over 1m, the score is 0. Therefore, it is meaningless to set an obstacle plane above 1m.

[0030] The length of the obstacle plane can be extended as needed, and the corresponding scoring rules should be re-established.

[0031] S2, determining the eye point position, and generating a plurality of radial sections with the eye point as the endpoint, wherein the radial sections are surfaces tangent to the opaque position of the vehicle body;

[0032] In some embodiments, Figure 3 As shown, the method for determining the eye point position is: when the distance between point H and the ground is less than 560 mm, the X coordinate of the eye point is the X coordinate of point H, and the Z coordinate of the eye point is the Z coordinate of point H plus 635 mm; when the distance between point H and the ground is greater than or equal to 560 mm, the X coordinate of the eye point is the X coordinate of point H minus 17.5 mm, and the Z coordinate of the eye point is the Z coordinate of point H plus 640 mm.

[0033] Among them, the method for determining the coordinates of point H is the existing technology, the procedure for determining point H is in accordance with GB / T11563, and the device used is in accordance with GB / T11559.

[0034] The method for generating the radial section includes: drawing multiple rays from the eye point to the boundary line of the opaque position of the vehicle body, and the surface formed by the multiple rays is the radial section. The radial section may be a plane or a curved surface or both. Figure 1 As shown, the three red lines are the points where the radial section is tangent to the boundary of the opaque position of the vehicle body.

[0035] S3, determining the observable area according to the intersection lines of the multiple radial sections extending to the obstacle plane and the obstacle plane, and counting the visible grids, where the visible grids are all grids corresponding to the observable area;

[0036] The visible grid includes the grids located within the intersection lines of the multiple radial sections and the obstacle plane and the grids intersecting with the intersection lines of the multiple radial sections and the obstacle plane. Figure 2 As shown, the grids with circles are invisible grids, and the remaining blank grids are visible grids.

[0037] S4. According to the scoring rules, the visible grid is scored, and the sum of the scores of all grids corresponding to the visible grid is used as the field of view evaluation score.

[0038] In some embodiments, the scoring rule includes: differentially scoring the grids of the obstacle plane along the height direction, the higher the height, the lower the score.

[0039] The specific scoring rules are shown in the table below:

[0040] Height (from top to bottom) Score (points) [0,100) 1 [100,200) 2 [200,300) 3 [300,400) 4 [400,500) 5 [500,600) 6 [600,700) 7 [700,800) 8 [800,900) 9 [900,1000] 10

[0041] The height in the above table represents the distance from the top of the obstacle plane. By calculating the sum of the scores of all visible grids, the field of view evaluation score of the current vehicle design can be obtained. By comparing it with other vehicle design schemes, the optimal scheme can be obtained.

[0042] The present invention also provides an oblique front vision verification and evaluation system, comprising: an obstacle plane generation module, an eye point position and radial section generation module, a visible grid determination module, and an evaluation module. The obstacle plane generation module is used to generate an obstacle plane within the driver's field of vision. The eye point position and radial section generation module is used to generate an eye point position according to set parameters, and to generate a radial section according to the eye point position and the opaque position of the vehicle body. The visible grid determination module is used to determine a visible grid according to the radial section. The evaluation module is used to calculate the field of vision evaluation score of the visible grid.

[0043] The present invention also provides a non-transitory computer-readable storage medium for storing a computer program or instruction. When the computer program or instruction is executed by a computer, the above-mentioned oblique forward visual field calibration and evaluation method is implemented.

[0044] The present invention also provides a computer program product, which includes computer instructions; when part or all of the computer instructions are run on a computer, the above-mentioned oblique forward visual field calibration and evaluation method is executed.

[0045] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0046] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for evaluating oblique frontal visual field, characterized in that: include: An obstacle plane is set within the driver's field of vision and the obstacle plane is divided into grids; Determine the eye point position, and generate multiple radial sections with the eye point as the endpoint, where the radial sections are surfaces tangent to the opaque position of the vehicle body; According to the intersection lines of multiple radial sections extending to the obstacle plane and the obstacle plane, the observable area is determined, and the visible grids are counted. The visible grids are all the grids corresponding to the observable area. According to the scoring rules, the visible grid is scored, and the sum of the scores of all grids corresponding to the visible grid is used as the field of view evaluation score.

2. The method for evaluating the oblique front vision according to claim 1, characterized in that: The method for generating the radial section includes: drawing a plurality of rays from the eye point as the end point to the boundary line of the opaque position of the vehicle body, and the surface formed by the plurality of rays is the radial section.

3. The method for evaluating the oblique front vision according to claim 1, characterized in that: The scoring rule includes: performing differentiated scoring on the grids of the obstacle plane along the height direction, wherein the higher the height, the lower the score.

4. The method for evaluating the oblique front vision according to claim 1, characterized in that: The visible grids include grids located within the intersection lines of the plurality of radial slices and the obstacle plane and grids intersecting with the intersection lines of the plurality of radial slices and the obstacle plane.

5. The method for evaluating the oblique front vision according to any one of claims 1 to 4, characterized in that: The obstacle planes are arranged on both sides and in front of the vehicle.

6. The method for evaluating the oblique front vision according to claim 5, characterized in that: The obstacle planes are set at three positions: 1 meter on the left side of the vehicle, 2.5 meters on the right side, and 1 meter in front. The length of the obstacle planes on both sides of the vehicle is equal to the vehicle length and the height is 1 meter. The length of the obstacle plane in front of the vehicle is equal to the vehicle width and the height is 1 meter.

7. The method for evaluating the oblique front vision according to any one of claims 1 to 4, characterized in that: The method for determining the eye point position is: when the distance between point H and the ground is less than 560mm, the X coordinate of the eye point is the X coordinate of point H, and the Z coordinate of the eye point is the Z coordinate of point H plus 635mm; when the distance between point H and the ground is greater than or equal to 560mm, the X coordinate of the eye point is the X coordinate of point H minus 17.5mm, and the Z coordinate of the eye point is the Z coordinate of point H plus 640mm.

8. A system for evaluating oblique front vision, characterized in that: include: An obstacle plane generation module, an eye point position and radial section generation module, a visual grid determination module, and an evaluation module. The obstacle plane generation module is used to generate an obstacle plane within the driver's field of vision. The eye point position and radial section generation module is used to generate an eye point position according to setting parameters, and to generate radial sections according to the eye point position and the opaque position of the vehicle body. The visual grid determination module is used to determine the visual grid according to the radial section. The evaluation module is used to calculate the field of view evaluation score of the visual grid.

9. A non-transitory computer-readable storage medium, characterized in that: Used to store computer programs or instructions, when the computer programs or instructions are executed by a computer, the method for verifying and evaluating the oblique forward visual field as described in any one of claims 1 to 7 is implemented.

10. A computer program product, characterized in that The computer program product includes computer instructions; when part or all of the computer instructions are run on a computer, the method for evaluating the oblique forward visual field as described in any one of claims 1 to 7 is executed.

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