Reflection material quality identification method and device, computer readable storage medium

Abstract

A reflection material identification method and device, and a computer readable storage medium, the method comprising: acquiring a reflection path and total reflection loss corresponding to the reflection path; the reflection path is a path in which a signal transmitted by a transmitter reaches a receiver after being reflected by a reflecting object; and determining a material corresponding to a reflecting object at a reflection point on the reflection path according to the total reflection loss corresponding to the reflection path.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a method and apparatus for identifying reflective materials, and a computer-readable storage medium. Background Technology

[0002] The integrated communication and sensing material identification function can identify the material of reflective objects on non-line-of-sight propagation paths through radio waves of wireless communication networks, realizing the integration and interoperability of communication capabilities and material identification capabilities.

[0003] In existing technologies, the material of a reflector on a single reflection path is estimated by measuring its dielectric constant. Alternatively, the material of a reflector on a single reflection path is estimated by measuring and calculating its reflection loss.

[0004] However, in some special scenarios, there may not be a single reflection path between the transmitter and the receiver, making it impossible to accurately obtain the material of the reflective object on the reflection path. Summary of the Invention

[0005] The present invention addresses the technical problem of being unable to accurately obtain the material of the reflective object along the reflection path.

[0006] To address the aforementioned technical problems, this invention provides a method for identifying the material of a reflective object, comprising: obtaining a reflection path and the total reflection loss corresponding to the reflection path; and determining the material of the reflective object at each reflection point based on the total reflection loss corresponding to the reflection path.

[0007] Optionally, obtaining the total reflection loss corresponding to the reflection path includes: obtaining the total loss of the signal propagating in the reflection path and the free space loss of the signal in the reflection path; and taking the difference between the total loss of the signal propagating in the reflection path and the free space loss of the signal in the reflection path as the total reflection loss corresponding to the reflection path.

[0008] Optionally, determining the material of the reflective object at each reflection point based on the total reflection loss corresponding to the reflection path includes: determining the material of the reflective object at each reflection point based on the total reflection loss corresponding to the reflection path and the total reflection loss corresponding to the reflection path under all material combinations of reflective objects in the current environment.

[0009] Optionally, after determining that there are multiple types of materials for the reflective object where the reflection point is located on the reflection path, the method further includes: if there are at least two reflection paths and the at least two reflection paths have the same target reflection point, then determine the material corresponding to the reflective object where the target reflection point is located based on the material type of the reflective object where the target reflection point is located on the at least two reflection paths.

[0010] Optionally, determining the material corresponding to the reflector where the target reflection point is located based on the material type of the reflector where the target reflection point is located on the at least two reflection paths includes: taking the intersection of the material types of the reflectors where the target reflection point is located on the at least two reflection paths; if there is only one material in the intersection, then the material in the intersection is taken as the material corresponding to the reflector where the target reflection point is located.

[0011] Optionally, if there are no at least two reflection paths with the same target reflection point, the reflection path is adjusted, and the reflection loss corresponding to the adjusted reflection path is obtained.

[0012] Optionally, there are at least two reflection points on the reflection path.

[0013] This invention also provides a reflective object identification device, comprising: an acquisition unit for acquiring a reflection path and the total reflection loss corresponding to the reflection path; and a determination unit for determining the material of the reflective object at each reflection point based on the total reflection loss corresponding to the reflection path.

[0014] This invention also provides a computer-readable storage medium, which is a non-volatile or non-transient storage medium, storing a computer program thereon. When the computer program is run by a processor, it executes the steps of any of the above-described reflective material identification methods.

[0015] This invention also provides another reflective material identification device, including a memory and a processor. The memory stores a computer program that can run on the processor. When the processor runs the computer program, it executes the steps of any of the reflective material identification methods described above.

[0016] Compared with the prior art, the technical solution of the embodiments of the present invention has the following beneficial effects:

[0017] Based on the reflection path and the total reflection loss corresponding to the reflection path, the material of the reflective object at each reflection point is determined. If it is determined that a certain reflection point corresponds to multiple material types, the material type of the reflective object at that target reflection point can be determined separately based on at least two reflection paths containing the same target reflection point, thereby further determining the material of the target reflection point. Thus, the material of the reflective object along the reflection path can be accurately identified.

[0018] When there are no at least two reflection paths with the same target reflection point, and the material corresponding to any reflection point cannot be determined, the reflection path can be adjusted, and the reflection loss corresponding to the adjusted reflection path can be obtained. By adjusting the reflection path, the accuracy of obtaining the material of the reflective object can be further improved. Attached Figure Description

[0019] Figure 1 This is a flowchart of a method for identifying reflective material in an embodiment of the present invention;

[0020] Figure 2 This is an application scenario diagram of a reflective material identification method according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of a reflective material identification device according to an embodiment of the present invention. Detailed Implementation

[0022] As described in the background section above, the prior art cannot accurately obtain the material of the reflective object along the reflection path.

[0023] In this embodiment of the invention, the material of the reflective object at each reflection point is determined based on the reflection path and the total reflection loss corresponding to the reflection path. If it is determined that there are multiple material types corresponding to a certain reflection point, the material type of the reflective object at the target reflection point can be determined separately based on at least two reflection paths containing the same target reflection point, thereby further determining the material of the target reflection point. Thus, the material of the reflective object on the reflection path can be accurately identified.

[0024] To make the above-mentioned objectives, features and beneficial effects of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] This invention provides a method for identifying the material of a reflective object, referring to... Figure 1 The following will provide a detailed explanation through specific steps.

[0026] Step S101: Obtain the reflection path and the total reflection loss corresponding to the reflection path.

[0027] In this embodiment of the invention, the reflection path refers to the path along which a signal emitted by the transmitter reaches the receiver after being reflected by a reflector. The transmitter is equipped with a transmitting antenna, and the receiver is equipped with a receiving antenna. The transmitter transmits signals via its transmitting antenna, and the receiver receives signals via its receiving antenna. There can be one or more transmitters, and one transmitter can correspond to one or more transmitting antennas.

[0028] In practice, ray tracing technology can be used to obtain the reflection path between the transmitting antenna and the receiving antenna.

[0029] In practical applications, the transmitter can be a base station, and the receiver can be a user equipment. Alternatively, the transmitter can be a user equipment, and the receiver can be a base station.

[0030] In practical implementation, the reflection loss of different materials at different incident angles and frequencies can be obtained in advance. The acquisition of the reflection loss can refer to existing technologies, and will not be elaborated here in this embodiment of the invention. The aforementioned incident angle is the incident angle of the signal, which is the angle between the incident signal and the normal of the reflecting surface.

[0031] Referring to Table 1 below, the reflection loss of wood, plaster, and glass at different incident angles is given at a frequency of 100 GHz.

[0032]

[0033] Table 1

[0034] In practical implementation, a constant-power electromagnetic wave is emitted by the transmitting antenna TX, reflected at reflection point RP by a reflective surface, and then received by the receiving antenna RX. The total path loss (PL) during signal transmission includes reflection loss (RL) caused by the reflector and free space path loss (FSPL) during electromagnetic wave propagation. The transmitting power P of the transmitting antenna TX is set as follows: TX Given that the received power measured by the receiving antenna RX is P RX The total path loss for the entire signal transmission process is:

[0035] PL = P TX -P RX (1);

[0036] Free space loss can be calculated using the following Friis formula:

[0037] FSPL(f,d) = 32.4 + 20log 10 (f)+20log 10 (d) (2);

[0038] Where d is the distance from the transmitting antenna TX to the receiving antenna RX after the signal is transmitted and reflected by the reflection point RP, and f is the frequency of the signal.

[0039] The reflection loss RL caused by the reflector is:

[0040] RL = PL - FSPL(f,d) (3)

[0041] Therefore, the reflection loss corresponding to each reflection path can be calculated.

[0042] In practice, three-dimensional information of the space range where the transmitter and receiver are located can be obtained in advance. The three-dimensional information includes the position information of all reflectors with a size greater than the first-order Fresnel zone.

[0043] In practice, the material information of all reflective objects within the spatial range where the transmitter and receiver are located can be obtained in advance. For example, it can be known in advance that the material of all reflective objects within the spatial range is any one of plaster, glass, or wood.

[0044] Specifically, three-dimensional information within a spatial range can be acquired using a pre-set image acquisition device, or by transmitting a detection signal through a transmitter. It is understood that other technical means can also be used to acquire three-dimensional information within a spatial range, and the specific implementation method for acquiring three-dimensional information within a spatial range does not affect the scope of protection of this invention.

[0045] In practical applications, material information for all reflective objects within a given space can be obtained through manual input. Alternatively, for interior spaces, the corresponding renovation plan can be obtained to acquire material information for all reflective objects within that space. It is understood that other technical means can also be used to obtain material information for reflective objects within a given space; the specific implementation method for obtaining this material information does not affect the scope of protection of this invention.

[0046] Step S102: Determine the material of the reflective object at the reflection point on the reflection path based on the reflection loss corresponding to the reflection path.

[0047] In practice, after obtaining the reflection loss corresponding to the reflection path, the material corresponding to the reflection point is determined based on the total reflection loss corresponding to the reflection path under the combination of all reflective material types in the current environment.

[0048] The following example illustrates the reflective material identification method provided in the above embodiments of the present invention.

[0049] Reference Figure 2 The present invention provides a schematic diagram of a scenario corresponding to a reflective material identification method in an embodiment of the present invention. Figure 2 The scenario depicts a two-story interior environment, measuring 20m × 15m × 7m, with each floor 3.5m high. The first floor contains a small room with a door. An 8m × 8m hole exists in the second-floor floor, surrounded by a 1m high fence. The walls are made of plaster, while the floors of both the first and second floors, as well as the door to the small room, are made of wood. The fence and the walls of the small room are made of glass.

[0050] The coordinates of transmitting antenna TX1 are (2, -6, 5), the coordinates of transmitting antenna TX2 are (-6, -3, 6), and the coordinates of receiving antenna RX1 are (2.08, 6.79, 1.07). Applying ray tracing techniques to the transmitting and receiving antennas along the TX1-RX and TX2-RX paths yields two double-reflection paths: a first reflection path 1 (TX1-RP1-RP2-RX) and a second reflection path 2 (TX2-RP1-RP3-RX), with reflection points RP having coordinates of RP1 (2.02, 0.5, 3.85), RP2 (2.08, -7.5, 3.02), and RP3 (5.49, -1.01, 3.06). The incident angle θ of the two reflections along the first reflection path 1... i1 and θ i2 The angles of incidence θ for the two reflections along the second reflection path 2 are 7.9° and 7.2° respectively. i1 and θ i2 The angles are 67.1° and 25° respectively.

[0051] Since all objects in the interior space are made of one of three materials: plaster, wood, or glass, for a double reflection path, each reflection point has three possible materials for the reflected object (one of plaster, wood, or glass). Therefore, there are nine possible materials for the reflected object corresponding to the two reflection points. The material order corresponding to a double reflection path is represented by (RPx-m1, RPy-m2), that is, the first reflection point is RP1 with material m1, the second reflection point is RP2 with material m2. Therefore, the nine possible material orders for the first reflection path 1 are as follows:

[0052] (RP1-wood,RP2-wood);

[0053] (RP1-plaster, RP2-plaster);

[0054] (RP1-glass,RP2-glass);

[0055] (RP1-wood, RP2-plaster);

[0056] (RP1-plaster, RP2-wood);

[0057] (RP1-wood, RP2-glass);

[0058] (RP1-glass, RP2-wood);

[0059] (RP1-plaster, RP2-glass);

[0060] (RP1-glass, RP2-plaster);

[0061] The order of the nine materials in the second reflection path 2 is as follows:

[0062] (RP1-wood,RP3-wood);

[0063] (RP1-plaster, RP3-plaster);

[0064] (RP1-glass, RP3-glass);

[0065] (RP1-wood, RP3-plaster);

[0066] (RP1-plaster, RP3-wood);

[0067] (RP1-wood, RP3-glass);

[0068] (RP1-glass, RP3-wood);

[0069] (RP1-plaster, RP3-glass);

[0070] (RP1-glass,RP3-plaster).

[0071] According to the incident angle θ i1 and θ i2 Given different materials, the first reflection loss 1 and the second reflection loss 2 can be calculated, and the total loss corresponding to the two reflections can be calculated.

[0072] Referring to Table 2 below, the mapping relationship between the reflection loss of the first reflection path 1 and the second reflection path 2 for reflection points of different materials in the embodiments of the present invention is given.

[0073]

[0074]

[0075] Table 2

[0076] The transmitting antenna TX1 transmits electromagnetic waves of constant power along the first reflection path 1, and the receiving antenna RX measures the received power. The length of the first reflection path 1 can be calculated from the coordinates of the transmitting antenna TX1, the receiving antenna RX, the first reflection point RP1, and the second reflection point RP2. The total reflection loss corresponding to the first reflection path 1 can be calculated from the above formulas (1) to (3).

[0077] The length of the second reflection path 2 can be calculated from the coordinates of the transmitting antenna TX1, the receiving antenna RX, the first reflection point RP1 and the third reflection point RP3. The total reflection loss corresponding to the second reflection path 2 can be calculated from the above formulas (1) to (3).

[0078] The calculated total reflection loss for the first reflection path 1 is 32dB. Assuming a maximum measurement error of 1dB, the actual total reflection loss range is 31dB to 33dB, meaning the total reflection loss caused by the two reflection points at corresponding incident angles ranges from 31dB to 33dB. From Table 2 above, we can see that the total reflection loss caused by the two reflection points at corresponding incident angles ranges from 31dB to 33dB, and the corresponding materials for the two reflection points are (RP1-wood, RP2-wood), meaning the material corresponding to the first reflection point RP1 is wood, and the material corresponding to the second reflection point RP2 is wood.

[0079] Therefore, it can be determined that the material of the reflective object at the first reflection point RP1 is wood, and the material of the reflective object at the second reflection point RP2 is wood.

[0080] Accordingly, after calculating the total reflection loss corresponding to the second reflection path 2, the materials corresponding to the first reflection point RP1 and the third reflection point RP3 can also be found from Table 2.

[0081] In practice, when determining the material of the corresponding reflection point based on the first reflection path 1, there may be a situation where the materials corresponding to the two reflection points on the first reflection path 1 are not unique. Similarly, when determining the material of the corresponding reflection point based on the second reflection path 2, there may also be a situation where the materials corresponding to the two reflection points on the second reflection path are not unique.

[0082] The total reflection loss was measured and calculated to be 19 dB for the first reflection path 1. Setting the maximum measurement error to 1 dB, the actual total reflection loss range is 18 dB to 20 dB. Referring to Table 2, the materials corresponding to the two reflection points on the first reflection path 1 are determined as: (RP1-plaster, RP2-glass); (RP1-glass, RP2-plaster). It can be seen that when the material corresponding to the first reflection point RP1 is plaster, the corresponding material corresponding to the second reflection point RP2 is glass; or, when the material corresponding to the first reflection point RP1 is glass, the corresponding material corresponding to the second reflection point RP2 is plaster. In this case, the materials corresponding to the first reflection point RP1 and the second reflection point RP2 cannot be uniquely determined.

[0083] The total reflection loss was measured and calculated to be 21.5 dB for the second reflection path 2. Setting the maximum measurement error to 1 dB, the actual total reflection loss range is 20.5 dB to 22.5 dB. Referring to Table 2, the materials corresponding to the two reflection points on the second reflection path 2 are determined to be (RP1-wood, RP3-plaster); (RP1-glass, RP3-wood). It can be seen that when the material corresponding to the first reflection point RP1 is wood, the material corresponding to the third reflection point RP3 is plaster; when the material corresponding to the first reflection point RP1 is glass, the material corresponding to the third reflection point RP3 is wood. In this case, the materials corresponding to the first reflection point RP1 and the third reflection point RP3 cannot be uniquely determined.

[0084] In this embodiment of the invention, to further determine the material corresponding to each reflection point, in the case of multiple reflection paths, it is possible to detect whether there are identical reflection points among the multiple reflection paths. If there are identical target reflection points between at least two reflection paths, the material type of the reflective object where the target reflection point is located is obtained for each of the at least two reflection paths, and the intersection of the material types of the reflective objects where the target reflection point is located is taken. If there is only one material in the intersection, the material in the intersection is taken as the material corresponding to the reflective object where the target reflection point is located.

[0085] Continue with Figure 2 For example, the first reflection path 1 and the second reflection path 2 share a common reflection point RP1 (2.02, 0.5, 3.85). Based on the reflection loss corresponding to the first reflection path 1, the material corresponding to the first reflection point RP1 is likely plaster or glass; based on the reflection loss corresponding to the second reflection path 2, the material corresponding to the first reflection point RP1 is likely wood or glass. Therefore, taking the intersection, we determine that the material corresponding to the first reflection point RP1 is glass.

[0086] Since the material corresponding to the first reflection point RP1 is determined to be glass, the material of the second reflection point RP2 is further determined to be plaster, and the material of the third reflection point RP3 is determined to be wood.

[0087] In practice, there may be situations where multiple reflection paths do not have the same reflection point. In this case, the reflection path can be adjusted, and steps S101 to S102 above can be executed again.

[0088] In this embodiment of the invention, adjusting the reflection path can be achieved by adjusting the positions of the transmitting antenna and / or the receiving antenna. For example, if the receiving antenna is located on the user equipment, moving the user equipment can adjust the reflection path.

[0089] Adjusting the reflection path can also involve adjusting the transmitting antenna of the transmitted signal. For example, if the transmitting antenna is the base station's transmitting antenna, the transmitting antenna can be switched from transmitting antenna 1 to transmitting antenna 2.

[0090] In summary, in this embodiment of the invention, if it is determined that a certain reflection point corresponds to multiple material types, the material type of the reflective object where the target reflection point is located can be determined based on at least two reflection paths containing the same target reflection point, thereby further determining the material of the target reflection point. Thus, the material of the reflective object on the reflection path can be accurately identified.

[0091] This invention also provides a method 30 for identifying reflective material, comprising: an acquisition unit 301 and a determination unit 302, wherein:

[0092] The acquisition unit 301 is used to acquire the reflection path and the total reflection loss corresponding to the reflection path;

[0093] The determining unit 302 is used to determine the material of the reflective object at each reflection point based on the total reflection loss corresponding to the reflection path.

[0094] In specific implementation, the specific execution process of the above-mentioned acquisition unit 301 and determination unit 302 can be referred to steps S101 to S102, which will not be elaborated here.

[0095] This invention also provides a computer-readable storage medium, which is a non-volatile or non-transient storage medium, storing a computer program thereon. When the computer program is run by a processor, it executes the steps of the reflective material identification method provided in any of the above embodiments.

[0096] This invention also provides another reflective material identification device, including a memory and a processor. The memory stores a computer program that can run on the processor. When the processor runs the computer program, it executes the steps of the reflective material identification method provided in any of the above embodiments.

[0097] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0098] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0099] In implementation, each step of the above method can be completed by integrated logic circuits in the processor's hardware or by instructions in software. The steps of the method disclosed in the embodiments of this application can be directly manifested as execution by a hardware processor, or as a combination of hardware and software units within the processor. The software units can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor executes the instructions in the memory, combining them with its hardware to complete the steps of the above method. To avoid repetition, detailed descriptions are omitted here.

[0100] In the embodiments of this application, the processor of the above-described device may be a Central Processing Unit (CPU), which may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0101] This application also provides a computer storage medium storing a computer program for electronic data interchange, which causes a computer to perform some or all of the steps of any of the methods described in the above method embodiments.

[0102] This application also provides a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods described in the above method embodiments. This computer program product can be a software installation package.

[0103] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0104] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of this application, depending on actual needs.

[0105] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0106] If the aforementioned integrated units are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage device (CMD). Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions to cause a computer device (which may be a personal computer, server, or TRP, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned memory includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0107] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A method for identifying the material of a reflective object, characterized in that, include: Obtain the reflection path and the total reflection loss corresponding to the reflection path; Based on the total reflection loss corresponding to the reflection path, determine the material of the reflective object at each reflection point; After determining that there are multiple types of materials for the reflective objects where the reflection points are located on the reflection paths, the method further includes: if there are at least two reflection paths and the at least two reflection paths have the same target reflection point, then the material corresponding to the reflective object where the target reflection point is located is determined according to the material types of the reflective objects where the target reflection point is located on the at least two reflection paths, including: taking the intersection of the material types of the reflective objects where the target reflection point is located on the at least two reflection paths; if there is only one material in the intersection, then the material in the intersection is taken as the material corresponding to the reflective object where the target reflection point is located; if there are no at least two reflection paths with the same target reflection point, then the reflection path is adjusted, and the reflection loss corresponding to the adjusted reflection path is obtained.

2. The method for identifying reflective material as described in claim 1, characterized in that, Obtaining the total reflection loss corresponding to the reflection path includes: Obtain the total loss of the signal propagating in the reflection path, and the free space loss of the signal in the reflection path; The difference between the total loss of the signal propagating along the reflection path and the free space loss of the signal along the reflection path is taken as the total reflection loss corresponding to the reflection path.

3. The method for identifying reflective material as described in claim 1, characterized in that, The step of determining the material of the reflective object at each reflection point based on the total reflection loss corresponding to the reflection path includes: Based on the total reflection loss corresponding to the reflection path, and the total reflection loss corresponding to the reflection path under all material combinations of reflective objects in the current environment, determine the material corresponding to the reflective object at each reflection point.

4. The method for identifying reflective material as described in any one of claims 1 to 3, characterized in that, There are at least two reflection points on the reflection path.

5. A reflective material identification device, characterized in that, include: The acquisition unit is used to acquire the reflection path and the total reflection loss corresponding to the reflection path; The determining unit is configured to determine the material corresponding to the reflector at each reflection point based on the total reflection loss corresponding to the reflection path. If, after determining that there are multiple material types of the reflector at the reflection point on the reflection path, at least two reflection paths exist, and the at least two reflection paths have the same target reflection point, then the material corresponding to the reflector at the target reflection point is determined based on the material types of the reflector at the target reflection point on the at least two reflection paths. This includes: taking the intersection of the material types of the reflector at the target reflection point on the at least two reflection paths; if only one material exists in the intersection, then the material in the intersection is taken as the material corresponding to the reflector at the target reflection point; if no at least two reflection paths have the same target reflection point, then the reflection path is adjusted, and the reflection loss corresponding to the adjusted reflection path is obtained.

6. A computer-readable storage medium, wherein the computer-readable storage medium is a non-volatile storage medium or a non-transient storage medium, and a computer program is stored thereon, characterized in that, When the computer program is run by the processor, it executes the steps of the reflective material identification method according to any one of claims 1 to 4.

7. A reflective material identification device, comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, characterized in that, When the processor runs the computer program, it performs the steps of the reflective material identification method according to any one of claims 1 to 4.

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