Method, device and equipment for evaluating direct stereoscopic view of vehicle

Abstract

The invention discloses a method, a device and equipment for evaluating a direct three-dimensional visual field of a vehicle. The method comprises the following steps of: determining an evaluation area and a median eye point position of a vehicle driver in an arranged experimental site; determining parallel cross sections of different heights for the evaluation region, and determining the visual region area on each parallel cross section according to an image shot by image acquisition equipment arranged at a median eye point position; and obtaining an assessment risk weight, and obtaining a direct stereoscopic view safety coefficient of the assessment region according to the assessment risk weight and the visual region area. Evaluation areas representing different directions are determined, the visual area areas of different heights of the evaluation areas are determined on the basis of images shot by image acquisition equipment arranged at the position of a median eye point, and the direct stereoscopic view of a vehicle is evaluated from multiple observation directions according to evaluation risk weights and the visual area areas. Therefore, evaluation is carried out from multiple directions, and comprehensiveness and accuracy of evaluation results are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle testing and evaluation, and in particular to a method, device and equipment for evaluating a vehicle's direct stereoscopic field of view. Background Art

[0002] Direct field of view refers to the driver's ability to observe the road and surrounding environment directly through the vehicle windows. Even in complex traffic conditions, direct field of view remains crucial. A good direct field of view provides enhanced driver safety, enabling drivers to quickly detect surrounding obstacles and respond swiftly to sudden dangers. Measuring and evaluating direct field of view is crucial for driving safety.

[0003] At present, the relevant domestic standards for direct field of view include GB 11562-2014 "Requirements and Measurement Methods for Vehicle Drivers' Forward Field of View". This standard provides measurement methods and requirements for vehicle drivers' forward field of view. However, this standard only makes relevant provisions for the vehicle's forward field of view. The measurement direction is relatively single and cannot accurately measure the vehicle's overall direct three-dimensional field of view. Summary of the Invention

[0004] The present invention provides a vehicle direct stereoscopic visual field evaluation method, so as to achieve a comprehensive and accurate evaluation of the vehicle direct stereoscopic visual field.

[0005] According to a first aspect of the present invention, a method for evaluating a vehicle's direct stereoscopic field of view is provided, comprising: determining an evaluation area and a median eye point position of a vehicle driver in an arranged experimental field, wherein the evaluation area includes a left area, a right area, and a front area;

[0006] Determining parallel cross-sections at different heights for the evaluation area, and determining the visible area on each of the parallel cross-sections based on images captured by an image acquisition device disposed at the median eye point position;

[0007] An assessment risk weight is obtained, and a direct stereoscopic field of view safety factor of the assessment area is obtained according to the assessment risk weight and the area of ​​the visible area.

[0008] According to another aspect of the present invention, a vehicle direct stereoscopic field of view assessment device is provided, comprising: an assessment area acquisition module, configured to determine an assessment area and a median eye point position of a vehicle driver in an arranged experimental field, wherein the types of the assessment area include a left area, a right area, and a front area;

[0009] a visible area determination module, configured to determine parallel cross-sections at different heights of the evaluation area, and determine the visible area on each of the parallel cross-sections based on images captured by an image acquisition device positioned at the median eye point;

[0010] The direct stereoscopic vision safety factor acquisition module is used to obtain an assessment risk weight and obtain the direct stereoscopic vision safety factor of the assessment area according to the assessment risk weight and the area of ​​the visible area.

[0011] According to another aspect of the present invention, an electronic device is provided, comprising:

[0012] at least one processor; and

[0013] a memory communicatively connected to the at least one processor; wherein,

[0014] The memory stores a computer program that can be executed by the at least one processor. The computer program is executed by the at least one processor to enable the at least one processor to perform the method according to any embodiment of the present invention.

[0015] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method described in any embodiment of the present invention when executed.

[0016] The technical solution of the embodiment of the present invention determines different types of evaluation areas and, based on images taken by an image acquisition device set at a median eye point, determines the visible area at different heights of the evaluation area, and evaluates the direct stereoscopic field of view of the vehicle from multiple observation directions based on the evaluation risk weight and the visible area, thereby performing evaluation from multiple directions and ensuring the comprehensiveness and accuracy of the evaluation results.

[0017] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1This is a flow chart of a method for evaluating a vehicle's direct stereoscopic field of view provided in accordance with a first embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of a scene of an experimental site provided according to the first embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the division of the evaluation area provided in the first embodiment of the present invention;

[0022] Figure 4 2 is a schematic diagram of determining the median eye point position according to the first embodiment of the present invention;

[0023] Figure 5 This is a flow chart of a vehicle direct stereoscopic field of view evaluation method provided according to a second embodiment of the present invention;

[0024] Figure 6 2 is a schematic structural diagram of a vehicle direct stereoscopic field of view assessment device provided according to a third embodiment of the present invention;

[0025] Figure 7 It is a structural diagram of an electronic device provided by the fourth embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] Example 1

[0029] Figure 1A flowchart of a vehicle direct stereoscopic field of view evaluation method is provided for the first embodiment of the present invention. This embodiment is applicable to the case of comprehensively evaluating the vehicle direct stereoscopic field of view. The method can be executed by a vehicle direct stereoscopic field of view evaluation device, which can be implemented in the form of hardware and / or software. Figure 1 As shown, the method includes:

[0030] Step S101 : determining an evaluation area and a median eye point position of a vehicle driver in the arranged experimental site.

[0031] Optionally, an evaluation area and a median eye point position of the vehicle driver are determined in the arranged experimental site, including: obtaining the parking position of the vehicle in the experimental site, and determining the evaluation area based on the parking position; determining the median front eye point position based on the position of the driver's eyes when looking straight ahead in the seat, determining the left eye point position based on the driver's eye movement when observing the left area, and determining the right eye point position based on the driver's eye movement when observing the right area; and using the median front eye point position, the left eye point position, and the right eye point position as the median eye point position.

[0032] Specifically, in this embodiment, the experimental site will be pre-arranged, which can be a black and white square area arranged on a flat, dry ground without obstacles. The size of the black and white square is 0.1m×0.1m. Figure 2 The figure shows a schematic diagram of the experimental site with black and white checkered areas. After the experimental site is arranged, the vehicle to be tested will be parked in the middle area of ​​the black and white checkered areas, ensuring that there are enough black and white checkered areas in front, on the left and on the right sides of the vehicle. The left edge of the vehicle (excluding the rearview mirror) and the front edge of the vehicle are aligned with the black and white checkered lines, with the straight line passing through the outermost left edge of the vehicle and parallel to the left boundary of the vehicle body as the y-axis, and the straight line passing through the outermost front edge of the vehicle head and parallel to the front edge boundary of the vehicle body as the x-axis. Among them, after determining the parking position of the vehicle, this embodiment will also determine the evaluation area according to the parking position, such as Figure 3 The figure shows a schematic diagram of the division of the evaluation area, that is, in the coordinate system determined above, ①⑤ are the left area, ①②③ are the front area, and ③④ are the right area. In addition, in this embodiment, the height range of the evaluation area is set to [0,1550mm] based on the shoulder height of the 90th percentile human body size of Chinese adults. Of course, this embodiment is only an example and does not limit the specific numerical value of the height range of the evaluation area.

[0033] Among them, such as Figure 4Figure 2 shows a schematic diagram for determining the median eye point position. In this embodiment, the vehicle seat is adjusted to the middle position, and the median front eye point position E2 is determined based on the position of the driver's eyes when looking straight ahead in the seat. The driver's head will deflect by a certain angle when observing the left and right areas of the vehicle. Assuming that the driver only rotates his head when observing the left and right areas of the vehicle, using the horizontal plane where E2 is located as a reference, referring to the 50th percentile head length of Chinese adult body dimensions, and with 100 mm longitudinally rearward of the vehicle where E2 is located as the center of the circle, point E2 is deflected 60 degrees to the left and right to obtain the driver's left eye point position E1 and right eye point position E3. The above-obtained E1, E2, and E3 are used as the median eye point position.

[0034] Step S102 : determining parallel cross sections at different heights for the evaluation area, and determining the visible area on each parallel cross section based on images captured by an image acquisition device set at a median eye point position.

[0035] Optionally, the visible area on each parallel section is determined based on images captured by an image acquisition device set at the median eye point position, including: determining the coordinates of visible points for markers contained in images captured on parallel sections at different heights; and calculating the visible point coordinates through an image processing algorithm to obtain the visible area on each parallel section.

[0036] Specifically, in this embodiment, image acquisition devices are respectively set at the left eye point position E1, the median front eye point position E2, and the right eye point position E3 determined above, and a laptop computer is used to display the screen. In this embodiment, parallel sections are obtained according to different heights, and the visible range of the direct field of view is measured at the section. During the measurement, the intersection of the left boundary and the front boundary of the vehicle can be used as the origin to establish the coordinate axis. Using a grid cloth, markers are placed at the intersection of the grid cloth, and the visible point coordinates are determined by observing whether the markers are visible in the receiver. The above-obtained visible point coordinates are imported into drawing software, such as CAD, and the visible point coordinates are calculated by the image processing algorithm in the drawing software to obtain the visible area on the parallel sections at different heights. The following Table 1 shows an example of the height of the parallel sections:

[0037] Table 1

[0038]

[0039] Step S103: Obtain the assessed risk weight, and obtain the direct stereoscopic vision safety factor of the assessed area according to the assessed risk weight and the area of ​​the visible area.

[0040] Optionally, obtaining the assessment risk weight includes: obtaining the regional weights corresponding to different types of assessment areas, and the height weights corresponding to different heights; and using the regional weights and the height weights as the assessment risk weights.

[0041] Specifically, in this embodiment, the regional weights corresponding to different types of evaluation areas and the height weights corresponding to different heights are obtained. The following Table 2 shows an example of regional weights:

[0042] Table 2

[0043] Assessment Area Weight value Front area 45 Left area 30 Right area 25

[0044] Table 3 below shows an example of height weights:

[0045] Table 3

[0046] high Weight value ground 25 500mm 15 1000mm 10 1300mm 10 1400mm 15 1550mm 25

[0047] Optionally, the direct stereoscopic field of view safety factor of the assessment area is obtained based on the assessment risk weight and the visible area, including: obtaining the regional safety factors of different types of assessment areas based on the visible area and height weight; calculating the average of all regional safety factors, and using the average as the direct stereoscopic field of view safety factor.

[0048] Optionally, the regional safety factors of different types of assessment areas are obtained based on the visible area and height weight, including: obtaining the horizontal area of ​​the assessment area for each type of assessment area; calculating the product and result of the visible area at different heights in each assessment area and the height weight; and taking the ratio of the product and result to the horizontal area of ​​the assessment area as the regional safety factor.

[0049] Specifically, in this embodiment, after obtaining the visible area of ​​each assessment area on the parallel cross-section at different heights, the safety factor of each type of assessment area is obtained according to the visible area and the height weight. Specifically, the safety factor of each assessment area is calculated using the following formula (1):

[0050]

[0051] Where i = 1, 2, 3 represent the front, left, and right sides respectively, n represents the total number of parallel sections, j = 1, 2...n, s ij Represents the visible area at different heights in the evaluation area, Si represents the horizontal area of ​​the evaluation area, αij represents the weight of different heights, and αi represents the safety factor of different evaluation areas. After obtaining the safety factors of various evaluation areas, the following formula (2) can be used to calculate the direct stereoscopic field of view safety factor:

[0052]

[0053] Among them, β i represents the regional weight, α irepresents the safety factor of different evaluation areas, and β represents the safety factor of direct stereoscopic vision.

[0054] Specifically, in this embodiment, after obtaining the regional safety factors and direct stereoscopic field of view safety factors of different types of evaluation areas, the direct stereoscopic field of view performance of the vehicle can be obtained by referring to the direct stereoscopic field of view performance evaluation rules. The following Table 4 shows an example of the direct stereoscopic field of view performance evaluation rules:

[0055] Table 4

[0056]

[0057]

[0058] In the implementation mode of the present application, by determining different types of evaluation areas and based on the images taken by the image acquisition device set at the median eye point position, the visible area at different heights of the evaluation area is determined, and the direct stereoscopic field of view of the vehicle is evaluated from multiple observation directions according to the evaluation risk weight and the visible area, thereby performing evaluation from multiple directions, thereby ensuring the comprehensiveness and accuracy of the evaluation results.

[0059] Example 2

[0060] Figure 5 A flowchart of a vehicle direct stereoscopic field of view assessment method is provided in the second embodiment of the present invention. This embodiment is based on the above embodiment. After obtaining the direct stereoscopic field of view safety factor of the assessment area based on the assessment risk weight and the area of ​​the visible area, it also includes: generating an alarm prompt when the direct stereoscopic field of view safety factor is less than a preset threshold; and displaying the alarm prompt on the visual interface.

[0061] Step S201 : determining an evaluation area and a median eye point position of a vehicle driver in the arranged experimental site.

[0062] Optionally, an evaluation area and a median eye point position of the vehicle driver are determined in the arranged experimental site, including: obtaining the parking position of the vehicle in the experimental site, and determining the evaluation area based on the parking position; determining the median front eye point position based on the position of the driver's eyes when looking straight ahead in the seat, determining the left eye point position based on the driver's eye movement when observing the left area, and determining the right eye point position based on the driver's eye movement when observing the right area; and using the median front eye point position, the left eye point position, and the right eye point position as the median eye point position.

[0063] Step S202 : determining parallel cross sections at different heights for the evaluation area, and determining the visible area on each parallel cross section based on images captured by an image acquisition device set at the median eye point position.

[0064] Optionally, the visible area on each parallel section is determined based on images captured by an image acquisition device set at the median eye point position, including: determining the coordinates of visible points for markers contained in images captured on parallel sections at different heights; and calculating the visible point coordinates through an image processing algorithm to obtain the visible area on each parallel section.

[0065] Step S203: Obtain the assessed risk weight, and obtain the direct stereoscopic vision safety factor of the assessed area according to the assessed risk weight and the area of ​​the visible area.

[0066] Optionally, obtaining the assessment risk weight includes: obtaining the regional weights corresponding to different types of assessment areas, and the height weights corresponding to different heights; and using the regional weights and the height weights as the assessment risk weights.

[0067] Optionally, the direct stereoscopic field of view safety factor of the assessment area is obtained based on the assessment risk weight and the visible area, including: obtaining the regional safety factors of different types of assessment areas based on the visible area and height weight; calculating the average of all regional safety factors, and using the average as the direct stereoscopic field of view safety factor.

[0068] Optionally, the regional safety factors of different types of assessment areas are obtained based on the visible area and height weight, including: obtaining the horizontal area of ​​the assessment area for each type of assessment area; calculating the product and result of the visible area at different heights in each assessment area and the height weight; and taking the ratio of the product and result to the horizontal area of ​​the assessment area as the regional safety factor.

[0069] Step S204: When the direct stereoscopic vision safety factor is less than a preset threshold, an alarm is generated; and the alarm is displayed on a visual interface.

[0070] Specifically, in this embodiment, after obtaining the direct stereoscopic field of view safety factor, when it is determined that the direct stereoscopic field of view safety factor is less than the preset threshold, it means that the direct stereoscopic field of view of the current vehicle has affected the driving safety of the vehicle. At this time, an alarm prompt will be generated, such as "The current direct stereoscopic field of view safety decimal is small, and there is driving safety", and the alarm prompt will be displayed in the form of an image or text on the visual interface. Of course, this embodiment is only an example, and does not limit the specific display method of the alarm prompt.

[0071] In the implementation mode of the present application, by determining different types of evaluation areas and based on the images taken by the image acquisition device set at the median eye point position, the visible area at different heights of the evaluation area is determined, and the direct stereoscopic field of view of the vehicle is evaluated from multiple observation directions according to the evaluation risk weight and the visible area, thereby performing evaluation from multiple directions, thereby ensuring the comprehensiveness and accuracy of the evaluation results.

[0072] Example 3

[0073] Figure 6 A schematic diagram of the structure of a vehicle direct stereoscopic field of view evaluation device provided in the third embodiment of the present invention. Figure 6 The device comprises:

[0074] The evaluation area acquisition module 310 is used to determine the evaluation area and the median eye point position of the vehicle driver in the arranged experimental site, wherein the types of evaluation areas include the left area, the right area, and the front area;

[0075] A visible area determination module 320 is configured to determine parallel cross-sections at different heights within the evaluation area and determine the visible area on each parallel cross-section based on images captured by an image acquisition device positioned at the median eye point.

[0076] The direct stereoscopic vision safety factor acquisition module 330 is used to acquire an assessment risk weight, and acquire a direct stereoscopic vision safety factor of the assessment area according to the assessment risk weight and the area of ​​the visible area.

[0077] Optionally, an evaluation area acquisition module is used to obtain the parking position of the vehicle in the experimental site and determine the evaluation area based on the parking position;

[0078] The median front eye point position is determined based on the position of the driver's eyes when looking straight ahead in the seat, the left eye point position is determined based on the driver's eye movement when observing the left area, and the right eye point position is determined based on the driver's eye movement when observing the right area;

[0079] The median front eye point position, the left eye point position, and the right eye point position are taken as the median eye point position.

[0080] Optionally, a visible region area determination module is used to determine the coordinates of visible points of markers contained in images captured on parallel cross-sections at different heights;

[0081] The visible point coordinates are calculated using an image processing algorithm to obtain the visible area on each parallel section.

[0082] Optionally, the direct stereoscopic vision safety factor acquisition module includes an assessment risk weight acquisition unit for acquiring area weights corresponding to different types of assessment areas and height weights corresponding to different heights;

[0083] The regional weight and altitude weight are used as the assessment risk weights.

[0084] Optionally, the direct stereoscopic vision safety factor acquisition module includes a direct stereoscopic vision safety factor acquisition unit for acquiring regional safety factors of different types of assessment areas according to the visible area and height weight;

[0085] The mean of the safety factors of all regions was calculated and used as the safety factor of direct stereoscopic vision.

[0086] Optionally, a direct stereoscopic field of view safety factor acquisition unit is used to acquire the horizontal area of ​​the assessment area for each type of assessment area;

[0087] Calculate the product of the visible area at different heights in each assessment area and the height weight;

[0088] The ratio of the product sum result to the horizontal area of ​​the assessment area is taken as the regional safety factor.

[0089] Optionally, the device further comprises an alarm module for generating an alarm prompt when the direct stereoscopic field of view safety factor is less than a preset threshold;

[0090] Display the alarm prompt on the visual interface.

[0091] The vehicle direct stereoscopic vision evaluation device provided in the embodiment of the present invention can execute the vehicle direct stereoscopic vision evaluation method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0092] Example 4

[0093] Figure 7 The present invention is a block diagram of an electronic device 10 that can be used to implement an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0094] like Figure 7As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., which is communicatively connected to the at least one processor 11. The memory stores a computer program that can be executed by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. Various programs and data required for the operation of the electronic device 10 can also be stored in the RAM 13. The processor 11, ROM 12, and RAM 13 are connected to each other via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0095] Multiple components in the electronic device 10 are connected to the I / O interface 15, including an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0096] The processor 11 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any other suitable processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the vehicle direct stereoscopic field of view assessment method.

[0097] In some embodiments, the vehicle direct stereoscopic field of view assessment method can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the vehicle direct stereoscopic field of view assessment method described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform the vehicle direct stereoscopic field of view assessment method in any other appropriate manner (e.g., by means of firmware).

[0098] Various embodiments of the systems and techniques described herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0099] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0100] In the context of the present invention, computer-readable storage media can be tangible media that can contain or store a computer program for use with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Computer-readable storage media can include but are not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, computer-readable storage media can be machine-readable signal media. More specific examples of machine-readable storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0101] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0102] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0103] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0104] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0105] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A vehicle direct stereoscopic field of view assessment method, characterized in that: include: Determining an evaluation area and a median eye point position of a vehicle driver in the arranged experimental site, wherein the types of the evaluation area include a left area, a right area, and a front area; Determining parallel cross-sections at different heights for the evaluation area, and determining the visible area on each of the parallel cross-sections based on images captured by an image acquisition device disposed at the median eye point position; An assessment risk weight is obtained, and a direct stereoscopic field of view safety factor of the assessment area is obtained according to the assessment risk weight and the area of ​​the visible area.

2. The method according to claim 1, characterized in that Determining the evaluation area and the median eye point position of the vehicle driver in the arranged experimental site includes: Obtaining a parking position of the vehicle in the test site, and determining the evaluation area according to the parking position; determining a median front eye point position based on the position of the driver's eyes when the driver is looking straight ahead in the seat, determining a left eye point position based on the driver's eye movement when observing the left area, and determining a right eye point position based on the driver's eye movement when observing the right area; The median front eye point position, the left eye point position, and the right eye point position are used as the median eye point position.

3. The method according to claim 1, characterized in that The determining of the visible area on each of the parallel cross sections based on the image captured by the image acquisition device disposed at the median eye point position includes: determining the coordinates of visible points of markers contained in the images captured on the parallel cross sections at different heights; The visible point coordinates are calculated using an image processing algorithm to obtain the visible area on each parallel cross section.

4. The method according to claim 1, wherein The obtaining and assessing risk weights includes: Obtain the regional weights corresponding to different types of assessment areas, and the height weights corresponding to different heights; The area weight and the height weight are used as the assessed risk weight.

5. The method according to claim 4, characterized in that The obtaining of a direct stereoscopic vision safety factor of the assessment area according to the assessment risk weight and the area of ​​the visible area includes: Obtaining regional safety factors of different types of assessment areas according to the visible area and the height weight; Calculate the average of the safety factors of all the regions, and use the average as the direct stereoscopic field of view safety factor.

6. The method according to claim 5, characterized in that The obtaining of regional safety factors of different types of assessment areas according to the visible area and the height weight includes: Obtain the horizontal area of ​​the assessment area for each type of assessment area; Calculate the product of the visible area at different heights in each assessment area and the height weight; The ratio of the product sum result to the horizontal area of ​​the assessment area is used as the regional safety factor.

7. The method according to claim 1, characterized in that After obtaining the direct stereoscopic vision safety factor of the assessment area according to the assessment risk weight and the area of ​​the visible area, the method further includes: When the direct stereoscopic vision safety factor is less than a preset threshold, an alarm is generated; The alarm prompt is displayed on a visual interface.

8. A vehicle direct stereoscopic vision evaluation device, characterized in that: include: An evaluation area acquisition module is used to determine the evaluation area and the median eye point position of the vehicle driver in the arranged experimental site, wherein the types of the evaluation area include the left area, the right area and the front area; a visible area determination module, configured to determine parallel cross-sections at different heights of the evaluation area, and determine the visible area on each of the parallel cross-sections based on images captured by an image acquisition device positioned at the median eye point; The direct stereoscopic vision safety factor acquisition module is used to obtain an assessment risk weight and obtain the direct stereoscopic vision safety factor of the assessment area according to the assessment risk weight and the area of ​​the visible area.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program to be executed by the at least one processor, where the computer program is executed by the at least one processor so as to enable the at least one processor to perform the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method according to any one of claims 1 to 7 when executed.

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