Tire pressure state determination method, device, equipment, medium and program product

Abstract

The invention discloses a tire air pressure state determination method, device and equipment, a medium and a program product, and belongs to the technical field of tire air pressure detection.The method comprises the steps that a tire gray level image of a target tire is obtained; based on a Canny edge detection algorithm, carrying out edge detection on the tire grayscale image according to the lag threshold to obtain a tire edge image; extracting a first reference straight line where the outer side of the target tire is in contact with the ground and a second reference straight line where the inner side of the target tire is in contact with the rim from the tire edge image; determining a first included angle and a second included angle according to the endpoint information of the first reference straight line and the endpoint information of the second reference straight line; and determining the tire pressure state of the target tire according to the first included angle and the second included angle. Under the condition of not depending on a physical sensor, accurate determination of the tire pressure state is realized; meanwhile, the physical sensor does not need to be replaced regularly, and the tire pressure does not need to be checked manually regularly, so that the use burden of a rider is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of tire pressure detection, and in particular to a tire pressure state determination method, device, equipment, medium and program product. Background Art

[0002] With the widespread use of bicycles in daily travel and sports, real-time monitoring of bicycle tire pressure has become increasingly important. Detecting bicycle tire pressure can help avoid accidents caused by tire problems and ensure riding safety.

[0003] Existing tire pressure detection methods mainly rely on physical sensors or manual inspection, which not only increase the usage burden of riders, but also have certain limitations in detection accuracy. Summary of the invention

[0004] The present invention provides a tire pressure state determination method, device, equipment, medium and program product to reduce the use burden of riders and achieve accurate determination of the tire pressure state of a bicycle without relying on physical sensors.

[0005] According to one aspect of the present invention, a method for determining a tire pressure state is provided, the method comprising:

[0006] Acquire a tire grayscale image of a target tire;

[0007] Based on the Canny edge detection algorithm, edge detection is performed on the tire grayscale image according to the hysteresis threshold to obtain the tire edge image;

[0008] Extracting a first reference straight line where the outer side of the target tire contacts the ground and a second reference straight line where the inner side of the target tire contacts the wheel rim from the tire edge image;

[0009] Determine a first angle and a second angle according to endpoint information of the first reference straight line and endpoint information of the second reference straight line;

[0010] The tire pressure state of the target tire is determined according to the first included angle and the second included angle.

[0011] According to another aspect of the present invention, there is provided a device for determining tire pressure status, the device comprising:

[0012] A tire grayscale image acquisition module, used to acquire a tire grayscale image of a target tire;

[0013] A tire edge image determination module is used to perform edge detection on the tire grayscale image based on a Canny edge detection algorithm according to a hysteresis threshold to obtain a tire edge image;

[0014] A reference straight line extraction module is used to extract a first reference straight line where the outer side of the target tire contacts the ground, and a second reference straight line where the inner side of the target tire contacts the wheel rim from the tire edge image;

[0015] An angle determination module, used to determine the first angle and the second angle according to the endpoint information of the first reference straight line and the endpoint information of the second reference straight line;

[0016] The tire pressure state determination module is used to determine the tire pressure state of the target tire according to the first included angle and the second included angle.

[0017] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0018] at least one processor; and

[0019] a memory communicatively connected to at least one processor; wherein,

[0020] The memory stores a computer program executable by at least one processor. The computer program is executed by at least one processor so that the at least one processor can execute the tire pressure state determination method according to any embodiment of the present invention.

[0021] 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 tire pressure state determination method of any embodiment of the present invention when executed.

[0022] According to another aspect of the present invention, a computer program product is provided, comprising a computer program, and when the computer program is executed by a processor, the method for determining the tire pressure state according to any embodiment of the present invention is implemented.

[0023] The technical solution of the embodiment of the present invention is to obtain a tire grayscale image of the target tire; perform edge detection on the tire grayscale image according to the hysteresis threshold based on the Canny edge detection algorithm to obtain a tire edge image; extract a first reference straight line where the outer side of the target tire contacts the ground, and a second reference straight line where the inner side of the target tire contacts the wheel rim from the tire edge image; determine a first angle and a second angle based on the endpoint information of the first reference straight line and the endpoint information of the second reference straight line; and determine the tire pressure state of the target tire based on the first angle and the second angle. The above technical solution, without relying on physical sensors, uses the first reference straight line where the outer side of the tire contacts the ground in the tire edge image, and the second reference straight line where the inner side of the target tire contacts the wheel rim, and determines the tire pressure state of the target tire with the help of geometric analysis technology, thereby achieving accurate determination of the tire pressure state of the bicycle; at the same time, there is no need to regularly replace physical sensors, and there is no need to regularly manually check the tire pressure, thereby reducing the use burden of the rider.

[0024] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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.

[0026] Figure 1A is a flow chart of a method for determining tire pressure status according to Embodiment 1 of the present invention;

[0027] Figure 1B is a schematic diagram of the structure of an auxiliary triangle in a tire edge image provided according to Embodiment 1 of the present invention;

[0028] Figure 2 is a flow chart of a method for determining tire pressure status according to Embodiment 2 of the present invention;

[0029] Figure 3 is a structural schematic diagram of a tire pressure state determination device provided according to Embodiment 3 of the present invention;

[0030] Figure 4 It is a structural schematic diagram of an electronic device for implementing the tire pressure state determination method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme 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 described embodiments 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 creative work should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "target", "first" and "second" in the specification 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 data 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 that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] In addition, it should be noted that the collection, storage, use, processing, transmission, provision and disclosure of the hysteresis threshold, angle threshold, first distance threshold and second distance threshold involved in the technical solution of the present invention are in compliance with the provisions of relevant laws and regulations and do not violate public order and good morals.

[0034] Embodiment 1

[0035] Figure 1A This is a flow chart of a tire pressure state determination method provided in Embodiment 1 of the present invention. This embodiment is applicable to the case of determining the tire pressure state of a bicycle. The method can be executed by a tire pressure state determination device, which can be implemented in the form of hardware and / or software and can be configured in an electronic device. Figure 1A As shown, the method includes:

[0036] S101, obtaining a tire grayscale image of a target tire.

[0037] The target tire refers to the bicycle tire whose tire pressure state needs to be determined; optionally, the target tire may include a front tire and a rear tire. The tire grayscale image refers to a tire image represented by grayscale values.

[0038] Specifically, the tire color image of the target tire can be obtained by an image acquisition device installed on the target tire; based on a preset image grayscale processing algorithm, the tire color image is grayscale processed to obtain a tire grayscale image of the target tire. The image acquisition device can be a miniature camera; the preset image grayscale processing algorithm can be pre-set according to actual business needs, for example, the preset image grayscale processing algorithm can be one of the maximum value method, the average value method and the weighted average method, etc., which is not specifically limited in the embodiment of the present invention.

[0039] S102 . Based on the Canny edge detection algorithm, edge detection is performed on the tire grayscale image according to a hysteresis threshold to obtain a tire edge image.

[0040] The hysteresis threshold refers to a threshold used to determine the edge of the tire grayscale image; optionally, the hysteresis threshold includes a high threshold and a low threshold; the hysteresis threshold can be pre-set according to actual business needs and image features of the tire grayscale image, and the embodiment of the present invention does not specifically limit it. The tire edge image refers to a binary image composed of edge points in the tire grayscale image; wherein the binary image refers to an image in which the grayscale value of the pixel point has only two values, 0 and 255.

[0041] Specifically, the tire grayscale image and the hysteresis threshold are input into the Canny edge detection algorithm, and the tire edge image is obtained after being processed by the Canny edge detection algorithm.

[0042] S103, extracting a first reference straight line where the outer side of the target tire contacts the ground, and a second reference straight line where the inner side of the target tire contacts the wheel rim from the tire edge image.

[0043] The reference straight line refers to a straight line required to determine the tire pressure state of the target tire. It should be noted that the first reference straight line is parallel to the second reference straight line, and the straight line length of the second reference straight line is less than the straight line length of the first reference straight line.

[0044] Specifically, based on the Hough transform straight line detection algorithm, a first reference straight line where the outer side of the target tire contacts the ground and a second reference straight line where the inner side of the target tire contacts the wheel rim are extracted from the tire edge image.

[0045] S104: Determine a first angle and a second angle according to endpoint information of the first reference straight line and endpoint information of the second reference straight line.

[0046] Specifically, the first auxiliary line can be determined based on the left endpoint of the first reference straight line and the left endpoint of the second reference straight line; the second auxiliary line can be determined based on the right endpoint of the first reference straight line and the right endpoint of the second reference straight line; the first angle and the second angle can be determined based on the first auxiliary line, the second auxiliary line and the first reference straight line.

[0047] Among them, the first angle and the second angle are determined according to the first auxiliary line, the second auxiliary line and the first reference straight line. Specifically, it can be: the angle between the first auxiliary line and the first reference straight line is taken as the first angle; the angle between the second auxiliary line and the first reference straight line is taken as the second angle.

[0048] S105: Determine the tire pressure state of the target tire according to the first included angle and the second included angle.

[0049] Specifically, the first auxiliary line and the second auxiliary line may be intersected to obtain an auxiliary triangle formed by the first reference straight line, the first auxiliary line and the second auxiliary line (see Figure 1B), obtain the position information of the three vertices in the auxiliary triangle; calculate the first angle of the first angle and the second angle of the second angle by trigonometric function according to the position information of the three vertices; average the first angle and the second angle to obtain the average angle; if the average angle is within the preset angle range, determine that the tire pressure state of the target tire is normal; otherwise, determine that the tire pressure state of the target tire is abnormal. It should be noted that Figure 1B θ1 in which θ represents the first angle, and θ2 represents the second angle.

[0050] The technical solution of the embodiment of the present invention is to obtain a tire grayscale image of the target tire; perform edge detection on the tire grayscale image according to the hysteresis threshold based on the Canny edge detection algorithm to obtain a tire edge image; extract a first reference straight line where the outer side of the target tire contacts the ground, and a second reference straight line where the inner side of the target tire contacts the wheel rim from the tire edge image; determine a first angle and a second angle based on the endpoint information of the first reference straight line and the endpoint information of the second reference straight line; and determine the tire pressure state of the target tire based on the first angle and the second angle. The above technical solution, without relying on physical sensors, uses the first reference straight line where the outer side of the tire contacts the ground in the tire edge image, and the second reference straight line where the inner side of the target tire contacts the wheel rim, and determines the tire pressure state of the target tire with the help of geometric analysis technology, thereby achieving accurate determination of the tire pressure state of the bicycle; at the same time, there is no need to regularly replace physical sensors, and there is no need to regularly manually check the tire pressure, thereby reducing the use burden of the rider.

[0051] Embodiment 2

[0052] Figure 2 This is a flowchart of a tire pressure state determination method provided in Example 2 of the present invention. Based on the above example, this example further optimizes "determining the tire pressure state of the target tire according to the first angle and the second angle" and provides an optional implementation scheme. It should be noted that for the parts not described in detail in the example of the present invention, reference can be made to the relevant descriptions of other examples. Figure 2 As shown, the method includes:

[0053] S201, obtaining a tire grayscale image of a target tire.

[0054] S202 , based on the Canny edge detection algorithm, edge detection is performed on the tire grayscale image according to the hysteresis threshold to obtain a tire edge image.

[0055] S203, extracting a first reference straight line where the outer side of the target tire contacts the ground, and a second reference straight line where the inner side of the target tire contacts the wheel rim from the tire edge image.

[0056] S204: Determine a first angle and a second angle according to endpoint information of the first reference straight line and endpoint information of the second reference straight line.

[0057] S205: Determine a minimum angle from the first angle and the second angle.

[0058] The minimum angle refers to the smaller angle between the first angle and the second angle.

[0059] Specifically, the first angle of the first angle is compared with the second angle of the second angle; if the first angle is greater than the second angle, the second angle is taken as the minimum angle; if the first angle is less than the second angle, the first angle is taken as the minimum angle; if the first angle is equal to the second angle, an angle is randomly selected from the first angle and the second angle as the minimum angle.

[0060] S206: If the minimum angle is greater than the angle threshold, determine that the tire pressure state of the target tire is normal.

[0061] The angle threshold may be determined through a large number of experiments, or may be preset according to the tire type of the bicycle and the experience of those skilled in the art. For example, the angle threshold may be 30 degrees, which is not specifically limited in the embodiment of the present invention.

[0062] S207: Otherwise, determine that the tire pressure state of the target tire is abnormal.

[0063] The abnormal state may include a state of slightly insufficient tire pressure and a state of seriously insufficient tire pressure.

[0064] Specifically, if the minimum angle is less than or equal to the angle threshold, it is determined that the tire pressure state of the target tire is in an abnormal state.

[0065] Optionally, when the tire pressure state of the target tire is abnormal, the vertical distance from the second reference straight line to the first reference straight line is determined; if the vertical distance is less than or equal to the first distance threshold, and the vertical distance is greater than the second distance threshold, the first-level warning mechanism is triggered and a first-level warning message is generated; if the vertical distance is less than or equal to the second distance threshold, the second-level warning mechanism is triggered and a second-level warning message is generated.

[0066] Among them, the first distance threshold and the second distance threshold are both thresholds required to determine whether to trigger the warning mechanism. It should be noted that the second distance threshold is less than the first distance threshold, and the warning level of the first-level warning mechanism is lower than the warning level of the second-level warning mechanism. Both the first-level warning information and the second-level warning information include the tire pressure status of the target tire.

[0067] It can be understood that, when the tire pressure status of the target tire is abnormal, by comparing the vertical distance from the second reference straight line to the first reference straight line with different distance thresholds, different levels of early warning mechanisms are triggered, thereby realizing early warning of different abnormal tire pressure states of the target tire, so that the rider can obtain the tire pressure status of the bicycle in time, and maintain the bicycle tire in time according to different degrees of early warning information, so as to reduce tire wear, extend the tire service life of the bicycle tire, and ensure riding safety.

[0068] The technical solution of the embodiment of the present invention is to obtain a tire grayscale image of a target tire; perform edge detection on the tire grayscale image according to a hysteresis threshold based on a Canny edge detection algorithm to obtain a tire edge image; extract a first reference straight line where the outer side of the target tire contacts the ground, and a second reference straight line where the inner side of the target tire contacts the wheel rim from the tire edge image; determine a first angle and a second angle according to the endpoint information of the first reference straight line and the endpoint information of the second reference straight line; determine a minimum angle from the first angle and the second angle; if the angle of the minimum angle is greater than the angle threshold, determine that the tire pressure state of the target tire is normal; otherwise, determine that the tire pressure state of the target tire is abnormal. The above technical solution, without relying on physical sensors, uses the first reference straight line where the outer side of the tire contacts the ground in the tire edge image, and the second reference straight line where the inner side of the target tire contacts the wheel rim, and determines the tire pressure state of the target tire with the help of geometric analysis technology, thereby realizing accurate determination of the tire pressure state of the bicycle; at the same time, there is no need to regularly replace physical sensors, and there is no need to regularly manually check the tire pressure, thereby reducing the use burden of the rider.

[0069] Embodiment 3

[0070] Figure 3 This is a schematic diagram of the structure of a tire pressure state determination device provided by the third embodiment of the present invention. This embodiment can be applied to the situation of determining the tire pressure state of a bicycle in real time. The device can be implemented in the form of hardware and / or software and can be configured in an electronic device. Figure 3 As shown, the device comprises:

[0071] A tire grayscale image acquisition module 301 is used to acquire a tire grayscale image of a target tire;

[0072] A tire edge image determination module 302 is used to perform edge detection on the tire grayscale image based on a Canny edge detection algorithm according to a hysteresis threshold to obtain a tire edge image;

[0073] A reference straight line extraction module 303 is used to extract a first reference straight line where the outer side of the target tire contacts the ground, and a second reference straight line where the inner side of the target tire contacts the wheel rim from the tire edge image;

[0074] An angle determination module 304, used to determine the first angle and the second angle according to the endpoint information of the first reference straight line and the endpoint information of the second reference straight line;

[0075] The tire pressure state determination module 305 is used to determine the tire pressure state of the target tire according to the first angle and the second angle.

[0076] The technical solution of the embodiment of the present invention obtains a tire grayscale image of a target tire; performs edge detection on the tire grayscale image according to a hysteresis threshold based on a Canny edge detection algorithm to obtain a tire edge image; extracts a first reference straight line where the outer side of the target tire contacts the ground, and a second reference straight line where the inner side of the target tire contacts the wheel rim from the tire edge image; determines a first angle and a second angle based on endpoint information of the first reference straight line and endpoint information of the second reference straight line; determines the tire pressure state of the target tire based on the first angle and the second angle. The above technical solution, without relying on physical sensors, utilizes the first reference straight line where the outer side of the tire contacts the ground, and the second reference straight line where the inner side of the target tire contacts the wheel rim in the tire edge image, and uses geometric analysis technology to determine the tire pressure state of the target tire, thereby achieving accurate determination of the tire pressure state of the bicycle; at the same time, there is no need to regularly replace physical sensors, and there is no need to regularly manually check the tire pressure, thereby reducing the use burden on riders.

[0077] Optionally, the angle determination module 304 is specifically configured to:

[0078] Determine a first auxiliary line according to the left end point of the first reference straight line and the left end point of the second reference straight line;

[0079] Determine a second auxiliary line according to the right end point of the first reference straight line and the right end point of the second reference straight line;

[0080] A first angle and a second angle are determined according to the first auxiliary line, the second auxiliary line and the first reference straight line.

[0081] Optionally, the tire pressure state determination module 305 is specifically used to:

[0082] Determining a minimum angle from the first angle and the second angle;

[0083] If the minimum angle is greater than the angle threshold, determining that the tire pressure state of the target tire is normal;

[0084] Otherwise, it is determined that the tire pressure state of the target tire is abnormal.

[0085] Optionally, the device further includes a tire pressure warning module, wherein the tire pressure warning module is specifically used for:

[0086] When the tire pressure state of the target tire is abnormal, determining a vertical distance from the second reference straight line to the first reference straight line;

[0087] If the vertical distance is less than or equal to the first distance threshold, and the vertical distance is greater than the second distance threshold, the first-level warning mechanism is triggered and a first-level warning message is generated;

[0088] If the vertical distance is less than or equal to the second distance threshold, the secondary warning mechanism is triggered and secondary warning information is generated.

[0089] The tire pressure state determination device provided in the embodiment of the present invention can execute the tire pressure state determination method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing each tire pressure state determination method.

[0090] According to an embodiment of the present invention, the present invention also provides an electronic device, a readable storage medium and a computer program product.

[0091] Embodiment 4

[0092] Figure 4 A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. 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.

[0093] like Figure 4As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and 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. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, ROM 12 and RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0094] A number of 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 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 through a computer network such as the Internet and / or various telecommunication networks.

[0095] The processor 11 may be a variety of general and / or special processing components 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 special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a tire pressure state determination method.

[0096] In some embodiments, the tire pressure state determination method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may 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 tire pressure state determination method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute the tire pressure state determination method in any other appropriate manner (e.g., by means of firmware).

[0097] Various implementations of the systems and techniques described above 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), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including 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.

[0098] 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, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0099] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0100] To provide interaction with a user, the systems and techniques described herein may 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 a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0101] The systems and techniques described herein may be implemented in a computing system that includes backend 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 frontend components (e.g., a user computer with a graphical user interface or a 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 backend components, middleware components, or frontend components. The components of the system may 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.

[0102] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0103] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0104] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for determining tire pressure status, characterized in that: include: Acquire a tire grayscale image of a target tire; Based on the Canny edge detection algorithm, edge detection is performed on the tire grayscale image according to a hysteresis threshold to obtain a tire edge image; Extracting a first reference straight line where the outer side of the target tire contacts the ground and a second reference straight line where the inner side of the target tire contacts the wheel rim from the tire edge image; Determine a first angle and a second angle according to endpoint information of the first reference straight line and endpoint information of the second reference straight line; The tire pressure state of the target tire is determined according to the first angle and the second angle.

2. The method according to claim 1, characterized in that: The determining the first angle and the second angle according to the endpoint information of the first reference straight line and the endpoint information of the second reference straight line comprises: Determine a first auxiliary line according to the left end point of the first reference straight line and the left end point of the second reference straight line; Determine a second auxiliary line according to the right end point of the first reference straight line and the right end point of the second reference straight line; A first angle and a second angle are determined according to the first auxiliary line, the second auxiliary line and the first reference straight line.

3. The method according to claim 1, characterized in that Determining the tire pressure state of the target tire according to the first angle and the second angle includes: Determining a minimum angle from the first angle and the second angle; If the minimum angle is greater than the angle threshold, determining that the tire pressure state of the target tire is normal; Otherwise, it is determined that the tire pressure state of the target tire is abnormal.

4. The method according to claim 3, characterized in that The method further comprises: When the tire pressure state of the target tire is abnormal, determining a vertical distance from the second reference straight line to the first reference straight line; If the vertical distance is less than or equal to the first distance threshold, and the vertical distance is greater than the second distance threshold, a first-level warning mechanism is triggered to generate a first-level warning message; If the vertical distance is less than or equal to the second distance threshold, the secondary warning mechanism is triggered to generate secondary warning information.

5. A tire pressure state determination device, characterized in that: include: A tire grayscale image acquisition module is used to acquire a tire grayscale image of a target tire; A tire edge image determination module is used to perform edge detection on the tire grayscale image based on a Canny edge detection algorithm according to a hysteresis threshold to obtain a tire edge image; A reference straight line extraction module, used to extract a first reference straight line where the outer side of the target tire contacts the ground, and a second reference straight line where the inner side of the target tire contacts the wheel rim from the tire edge image; An angle determination module, used to determine a first angle and a second angle according to endpoint information of the first reference straight line and endpoint information of the second reference straight line; A tire pressure state determination module is used to determine the tire pressure state of the target tire according to the first angle and the second angle.

6. The device according to claim 5, characterized in that The angle determination module is specifically used for: Determine a first auxiliary line according to the left end point of the first reference straight line and the left end point of the second reference straight line; Determine a second auxiliary line according to the right end point of the first reference straight line and the right end point of the second reference straight line; A first angle and a second angle are determined according to the first auxiliary line, the second auxiliary line and the first reference straight line.

7. The device according to claim 5, characterized in that The tire pressure state determination module is specifically used for: Determining a minimum angle from the first angle and the second angle; If the minimum angle is greater than the angle threshold, determining that the tire pressure state of the target tire is normal; Otherwise, it is determined that the tire pressure state of the target tire is abnormal.

8. 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 executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the tire pressure state determination method according to any one of claims 1 to 4.

9. 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 tire pressure state determination method according to any one of claims 1 to 4 when executed.

10. A computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method for determining the tire pressure state according to any one of claims 1 to 4 is implemented.

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