A method, device, equipment and storage medium for determining vehicle damage of a used car

Abstract

The present invention discloses a vehicle damage determination method, device, equipment and storage medium for a used car, and relates to the field of vehicle damage determination. First, the damaged parts in the vehicle to be tested, as well as the damage type and damage area of ​​the damaged parts are determined by a preset recognition model, so as to improve the detection efficiency and accuracy of component damage. Based on the damage area of ​​each damaged part, the damage area ratio of each damaged part is determined, and the component damage degree of each damaged part is jointly determined in combination with the damage type and damage area ratio of the damaged part, so as to further improve the detection accuracy of component damage. Finally, the overall damage degree of the vehicle to be tested is comprehensively determined in combination with the component type and component damage degree of each damaged part, which not only efficiently and accurately determines the overall damage degree of the vehicle to be tested, but also facilitates the subsequent determination of the transaction price of the vehicle to be tested.

Description

Technical Field

[0001] The present invention relates to the field of vehicle damage determination, and in particular to a vehicle damage determination method, device, equipment and storage medium for a used car. Background Art

[0002] As the number of vehicles on the market continues to increase, the transaction volume of used cars is also gradually increasing. When trading used cars, the transaction price of used cars is closely related to the damage to the used cars. Generally, the more serious the damage to the used car, the lower the transaction price. Therefore, it is necessary to determine the damage to the used car before trading it. At present, manual inspection methods are usually used to inspect the damage of various parts of the vehicle, but this method has the problems of low detection efficiency and low accuracy, which in turn affects the transaction price of used cars. Summary of the invention

[0003] The purpose of the present invention is to provide a vehicle damage determination method, device, equipment and storage medium for a used car, which can improve the efficiency and accuracy of damage detection on the vehicle to be tested.

[0004] In order to solve the above technical problems, the present invention provides a method for determining vehicle damage of a used car, comprising:

[0005] Recognize the obtained appearance image of the vehicle to be tested by using a preset recognition model to determine the damaged parts of the vehicle to be tested, the damage type of each damaged part, and the damage area of ​​each damaged part;

[0006] For each damaged component, determine the damage area ratio of the damaged component, and determine the component damage degree of the damaged component based on the damage type and damage area ratio of the damaged component; wherein the damage area ratio is a quotient obtained by dividing the damage area of ​​the damaged component by the component area of ​​the damaged component;

[0007] Based on the component type and component damage degree of each damaged component, the overall damage degree of the vehicle to be tested is determined.

[0008] Optionally, determining the damage degree of the damaged component based on the damage type of the damaged component and the damage area ratio includes:

[0009] Determine the damage type weight corresponding to the damaged component based on the preset corresponding relationship between the damage type of the damaged component and the damage type weight;

[0010] The product of the damage type weight corresponding to the damaged component and the damage area ratio of the damaged component is used as the component damage degree of the damaged component.

[0011] Optionally, the damage type includes any one or a combination of scratches, dents, wrinkles, cracks and perforations; and the damage type weights corresponding to scratches, the damage type weights corresponding to dents, the damage type weights corresponding to wrinkles, the damage type weights corresponding to cracks and the damage type weights corresponding to perforations increase in sequence.

[0012] Optionally, determining the overall damage degree of the vehicle to be tested based on the component type and component damage degree of each damaged component includes:

[0013] Determine the component type weight corresponding to each damaged component based on the preset correspondence between the component type of the damaged component and the component type weight;

[0014] For each damaged component, the product of the component type weight of the damaged component and the component damage degree is used as the weighted component damage degree of the damaged component;

[0015] The sum of the weighted component damage degrees of all damaged components in the vehicle to be tested is taken as the overall damage degree of the vehicle to be tested.

[0016] Optionally, after determining the damage degree of the damaged component based on the damage type and damage area ratio of the damaged component, the method further includes:

[0017] For each damaged component, the product of the damage degree of the damaged component and the standard price of the damaged component when the damaged component is not damaged is used as the deducted price of the damaged component;

[0018] The difference between the overall standard price of the vehicle to be tested when there is no damage and the damaged parts corresponding to all the damaged parts after deducting the damaged parts prices is taken as the transaction price of the vehicle to be tested.

[0019] Optionally, after determining the overall damage degree of the vehicle to be tested based on the component type and component damage degree of each damaged component, the method further includes:

[0020] The product of the overall standard price of the vehicle under test when there is no damage and the overall damage degree of the vehicle under test is used as the overall deduction price;

[0021] The difference between the overall standard price of the vehicle to be tested when there is no damage and the overall deduction price is taken as the transaction price of the vehicle to be tested.

[0022] In order to solve the above technical problems, the present invention also provides a vehicle damage determination device for a used car, comprising:

[0023] An identification module is used to identify the obtained appearance image of the vehicle to be tested by using a preset identification model, and determine the damaged parts in the vehicle to be tested, the damage type of each damaged part, and the damage area of ​​each damaged part;

[0024] A component damage degree determination module, for determining, for each damaged component, a damage area ratio of the damaged component, and determining the component damage degree of the damaged component based on the damage type and damage area ratio of the damaged component; wherein the damage area ratio is a quotient obtained by dividing the damage area of ​​the damaged component by the component area of ​​the damaged component;

[0025] The overall damage degree determination module is used to determine the overall damage degree of the vehicle to be tested based on the component type and component damage degree of each damaged component.

[0026] Optionally, the vehicle damage determination device for a used car further includes:

[0027] A damaged component deduction price determination module is used to determine, for each damaged component, the product of the damage degree of the damaged component and the standard component price of the damaged component when the damaged component is not damaged as the damaged component deduction price;

[0028] A first transaction price determination module is used to take the difference after deducting the damaged parts corresponding to all the damaged parts from the overall standard price of the tested vehicle when it is not damaged as the transaction price of the tested vehicle; or

[0029] An overall deduction price determination module, used to take the product of the overall standard price of the vehicle to be tested when there is no damage and the overall damage degree of the vehicle to be tested as the overall deduction price;

[0030] The second transaction price determination module is used to take the difference between the overall standard price of the vehicle to be tested when there is no damage and the overall deducted price as the transaction price of the vehicle to be tested.

[0031] In order to solve the above technical problems, the present invention also provides a vehicle damage determination device for a used car, comprising:

[0032] Memory for storing computer programs;

[0033] A processor is used to implement the steps of any of the above-mentioned methods for determining vehicle damage of a used car when executing the computer program.

[0034] In order to solve the above technical problem, the present invention also provides a storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of any of the above-mentioned methods for determining vehicle damage of a used car are implemented.

[0035] The beneficial effect of the present invention is to provide a method, device, equipment and storage medium for determining vehicle damage of a used car. First, the damaged parts in the vehicle to be tested, as well as the damage type and damage area of ​​the damaged parts are determined through a preset recognition model, thereby improving the efficiency and accuracy of component damage detection. Based on the damage area of ​​each damaged part, the damage area ratio of each damaged part is determined, and the component damage degree of each damaged part is jointly determined in combination with the damage type and damage area ratio of the damaged part, thereby further improving the detection accuracy of component damage. Finally, the overall damage degree of the vehicle to be tested is comprehensively determined in combination with the component type and component damage degree of each damaged part, which not only efficiently and accurately determines the overall damage degree of the vehicle to be tested, but also facilitates the subsequent determination of the transaction price of the vehicle to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the prior art and the drawings required for use in the embodiments are briefly introduced below. 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.

[0037] Figure 1 A flowchart of a method for determining vehicle damage of a used car provided by the present invention;

[0038] Figure 2 A schematic diagram of the structure of a vehicle damage determination device for a used car provided by the present invention;

[0039] Figure 3 A schematic structural diagram of a vehicle damage determination device for a used car provided by the present invention. DETAILED DESCRIPTION

[0040] The core of the present invention is to provide a vehicle damage determination method, device, equipment and storage medium for a used car, which can improve the efficiency and accuracy of damage detection on the vehicle to be tested.

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 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 are within the scope of protection of the present invention.

[0042] Please refer to Figure 1 , Figure 1 A flowchart of a method for determining vehicle damage of a used car provided by the present invention, the method comprising:

[0043] Step 101: Recognize the obtained appearance image of the vehicle to be tested by using a preset recognition model to determine the damaged parts of the vehicle to be tested, the damage type of each damaged part, and the damage area of ​​each damaged part;

[0044] First, the above-mentioned vehicle to be tested is the vehicle whose component damage degree and overall damage degree are to be determined. The appearance image of the vehicle to be tested may include the front appearance image, rear appearance image, left appearance image, right appearance image and top appearance image of the vehicle to be tested.

[0045] This embodiment does not specifically limit the implementation method of obtaining the appearance image of the vehicle to be tested. As an optional embodiment, a ring shooting station is pre-set, and a preset number of image acquisition devices (including but not limited to cameras, etc.) are deployed around the ring shooting station to achieve multi-angle ring shooting of the vehicle to be tested. When the vehicle to be tested arrives at the specified position of the ring shooting station, each image acquisition device is triggered to perform a ring shooting of the vehicle to be tested to obtain several appearance images of the vehicle to be tested.

[0046] The image acquisition device can be arranged at the front, rear, left, right and top of the ring-shooting station. Correspondingly, the appearance image includes the front appearance image, rear appearance image, left appearance image, right appearance image and top appearance image of the vehicle to be tested.

[0047] Importantly, in order to improve the efficiency and accuracy of determining vehicle damage of used cars, the present invention pre-trains a preset recognition model, which can identify damaged parts in the vehicle to be tested from the obtained appearance image of the vehicle to be tested, and identify the damage type and damage area of ​​each damaged part. There is no need to manually detect the damaged parts of the vehicle to be tested, which effectively avoids the problem of misdetection and missed detection of damaged parts, and significantly improves the detection efficiency.

[0048] This embodiment does not specifically limit the training process of the preset recognition model.

[0049] As an optional embodiment, firstly, several vehicles with different damage conditions are photographed in a circle to obtain several appearance images to be labeled; the damaged parts, damage types and damage areas of the several appearance images to be labeled are labeled respectively to obtain a training image set, and the training image set is used to train the preset recognition model. After the preset recognition model is trained with the training image set, the training status of the preset recognition model is fed back using the preset verification image set. When the accuracy of the preset recognition model in identifying the damaged parts, damage types and damage areas in the verification image set meets the requirements, the weight parameters of the current preset recognition model are saved and used as the final preset recognition model.

[0050] In addition, the preset recognition models in the present invention include but are not limited to the YOLO model (such as the YOLOv8n-SEG model), CNN (Convolutional Neural Networks) and the Detectron model, and the present invention does not specifically limit this.

[0051] The components of the vehicle to be tested in the present invention may include any one or a combination of multiple items of the front bumper, headlight, engine hood, doors (including front doors, rear doors, left doors and right doors), rearview mirrors, rear bumper, taillights, trunk lid, front windshield, rear windshield and door window glass. The damage type of the vehicle includes any one or a combination of multiple items of scratches, dents, wrinkles, cracks and perforations. The preset recognition model identifies the above components of the vehicle to be tested from the appearance image of the vehicle to be tested, and further determines the damage type and damage area of ​​the damaged component for the damaged component.

[0052] Step 102: for each damaged component, determine the damage area ratio of the damaged component, and determine the component damage degree of the damaged component based on the damage type and the damage area ratio of the damaged component; wherein the damage area ratio is a quotient obtained by dividing the damage area of ​​the damaged component by the component area of ​​the damaged component;

[0053] After determining the damage area of ​​each damaged component by the preset recognition model, the present invention further determines the damage area ratio of each damaged component. Using the damage area ratio of the damaged component as one of the indicators for determining the damage degree of the damaged component can improve the accuracy of the damage degree of the component.

[0054] The present invention further takes into account that there are many types of damage corresponding to the damaged component, such as scratches, dents, wrinkles, cracks and perforations. For the same damaged component, different types of damage indicate different degrees of damage to the damaged component. For example, the degree of damage when a damaged component has a perforation is higher than the degree of damage when the damaged component has a scratch. Therefore, the present invention also uses the damage type of the damaged component as one of the indicators for determining the degree of damage of the damaged component, thereby improving the accuracy of the degree of damage to the component.

[0055] How to determine the damage degree of a damaged component based on the damage type and damage area ratio of the damaged component will be described later and will not be elaborated here.

[0056] Step 103: Determine the overall damage degree of the vehicle to be tested based on the component type and component damage degree of each damaged component.

[0057] The present invention further takes into account that there are many types of components of the vehicle to be tested, and there may also be many types of damaged components. For example, component types include front bumpers, headlights, engine hoods, doors, etc. When the component types of the damaged components are different, the impact on the overall degree of damage to the vehicle to be tested is also different. Therefore, the present invention uses the component type and component damage degree of each damaged component as indicators for determining the overall degree of damage of the vehicle to be tested, thereby more efficiently and accurately determining the overall degree of damage of the vehicle to be tested, and also facilitates the subsequent determination of the transaction price of the vehicle to be tested based on the overall degree of damage of the vehicle to be tested.

[0058] How to determine the overall damage degree of the vehicle to be tested based on the component type and component damage degree of each damaged component will be explained later and will not be elaborated here.

[0059] In summary, the present invention provides a method for determining vehicle damage of a used car. First, the damaged parts in the vehicle to be tested, as well as the damage type and damage area of ​​the damaged parts are determined through a preset recognition model, so as to improve the detection efficiency and accuracy of component damage. The damage area ratio of each damaged part is determined based on the damage area of ​​each damaged part, and the component damage degree of each damaged part is jointly determined in combination with the damage type and damage area ratio of the damaged part, so as to further improve the detection accuracy of component damage. Finally, the overall damage degree of the vehicle to be tested is comprehensively determined in combination with the component type and component damage degree of each damaged part, which not only efficiently and accurately determines the overall damage degree of the vehicle to be tested, but also facilitates the subsequent determination of the transaction price of the vehicle to be tested.

[0060] Based on the above embodiments:

[0061] As an optional embodiment, determining the damage degree of the damaged component based on the damage type and damage area ratio of the damaged component includes:

[0062] Determine the damage type weight corresponding to the damaged component based on the preset corresponding relationship between the damage type of the damaged component and the damage type weight;

[0063] The product of the damage type weight corresponding to the damaged component and the damage area ratio of the damaged component is used as the component damage degree of the damaged component.

[0064] In this embodiment, a correspondence between the damage type of the damaged component and the damage type weight is preset. The damage type weight corresponding to different damage types has different values. The value of the damage type weight corresponding to each damage type can be set according to actual conditions.

[0065] For example, the damage types include scratches, dents, wrinkles, cracks and perforations. Damage type weights are set for the above five damage types respectively to obtain the corresponding relationship between the damage type and the damage type weight. For the above five damage types, the damage type weight corresponding to scratches, the damage type weight corresponding to dents, the damage type weight corresponding to wrinkles, the damage type weight corresponding to cracks and the damage type weight corresponding to perforations increase in sequence. For example, the damage type weight corresponding to scratches is 10%, the damage type weight corresponding to dents is 20%, the damage type weight corresponding to wrinkles is 30%, the damage type weight corresponding to cracks is 40% and the damage type weight corresponding to perforations is 50%.

[0066] For each damaged component, after the damage type of the damaged component is determined by the preset recognition model, the damage type weight corresponding to the damaged component is determined based on the corresponding relationship between the damage type and the damage type weight. After that, the product of the damage type weight and the damage area ratio is used as the component damage degree of the damaged component. That is, the component damage degree of the damaged component = damage type weight * damage area ratio.

[0067] For example, the front bumper of the vehicle to be tested has a scratch, and the scratch area accounts for 90% of the entire area of ​​the front bumper. Assuming that the weight of the damage type corresponding to the scratch is 10%, the damage degree of the front bumper components = 10%*90% = 9%.

[0068] As an optional embodiment, determining the overall damage degree of the vehicle to be tested based on the component type and component damage degree of each damaged component includes:

[0069] Determine the component type weight corresponding to each damaged component based on the preset correspondence between the component type of the damaged component and the component type weight;

[0070] For each damaged component, the product of the component type weight of the damaged component and the component damage degree is used as the weighted component damage degree of the damaged component;

[0071] The sum of the weighted component damage degrees of all damaged components in the vehicle to be tested is taken as the overall damage degree of the vehicle to be tested.

[0072] In this embodiment, a correspondence between the component type of the damaged component and the component type weight is preset. The value of the component type weight corresponding to each component type can be set according to actual conditions.

[0073] For example, component types include front bumper, headlight, engine hood, door (including front door, rear door, left door and right door), rearview mirror, rear bumper, taillight, trunk lid, front windshield, rear windshield and door window glass. Component type weights are set for each of the above component types to obtain the corresponding relationship between the component type of the damaged component and the component type weight.

[0074] After each damaged component is determined by the preset recognition model, the component type weight corresponding to each damaged component is determined based on the correspondence between the component type and the component type weight. Afterwards, for each damaged component, the product of the component type weight of the damaged component and the component damage degree is used as the weighted component damage degree of the damaged component. Finally, the sum of the weighted component damage degrees of all damaged components in the vehicle to be tested is used as the overall damage degree of the vehicle to be tested.

[0075] For example, the damaged parts of the vehicle to be tested are the front bumper and the headlights, among which the damage degree of the front bumper is 9%, and the weight of the component type corresponding to the front bumper is 20%; the damage degree of the headlight is 10%, and the weight of the component type of the headlight is 15%. Then the overall damage degree of the vehicle to be tested = 9%*20%+10%*15%=3.3%.

[0076] Taking into account that the transaction price of a used car is closely related to the vehicle damage of the used car, the present invention also provides two transaction price determination methods: determining the transaction price of the vehicle to be tested based on the damage degree of each component of the vehicle to be tested, and determining the transaction price of the vehicle to be tested based on the overall damage degree of the vehicle to be tested.

[0077] As an optional embodiment, after determining the damage degree of the damaged component based on the damage type and damage area ratio of the damaged component, the method further includes:

[0078] For each damaged component, the product of the damage degree of the damaged component and the standard price of the damaged component when the damaged component is not damaged is used as the deducted price of the damaged component;

[0079] The difference between the overall standard price of the tested vehicle when it is not damaged and the damaged parts deducted from the prices of all damaged parts is taken as the transaction price of the tested vehicle.

[0080] In this embodiment, the price of the tested vehicle without damage is taken as the overall standard price, and the losses caused by each damaged component are deducted one by one from the overall standard price to obtain the final transaction price.

[0081] Specifically, in this embodiment, the price of the damaged component when it is not damaged is used as the component standard price. The damaged component deducted price of the damaged component = the degree of component damage * the component standard price. After determining the damaged component deducted prices of all damaged components of the vehicle to be tested, the damaged component deducted prices corresponding to each damaged component are deducted from the overall standard price to obtain the final transaction price of the vehicle to be tested.

[0082] As an optional embodiment, after determining the overall damage degree of the vehicle to be tested based on the component type and component damage degree of each damaged component, the method further includes:

[0083] The product of the overall standard price of the vehicle under test when there is no damage and the overall damage degree of the vehicle under test is used as the overall deduction price;

[0084] The difference between the overall standard price when the tested vehicle has no damage and the overall deducted price is taken as the transaction price of the tested vehicle.

[0085] In this embodiment, the price of the tested vehicle without damage is taken as the overall standard price, and the loss caused by the overall damage of the vehicle is directly deducted from the overall standard price to obtain the final transaction price. Specifically, the overall deducted price = overall standard price * the overall damage degree of the tested vehicle; the transaction price of the tested vehicle = overall standard price - overall deducted price.

[0086] The transaction prices of the vehicles to be tested determined by the above two methods are both relatively reliable and the calculation methods are simple.

[0087] Please refer to Figure 2 , Figure 2 The present invention provides a schematic diagram of a second-hand vehicle damage determination device, wherein the second-hand vehicle damage determination device comprises:

[0088] The recognition module 201 is used to recognize the obtained appearance image of the vehicle to be tested by using a preset recognition model, and determine the damaged parts in the vehicle to be tested, the damage type of each damaged part, and the damage area of ​​each damaged part;

[0089] The component damage degree determination module 202 is used to determine the damage area ratio of each damaged component, and determine the component damage degree of the damaged component based on the damage type and damage area ratio of the damaged component; wherein the damage area ratio is the quotient obtained by dividing the damage area of ​​the damaged component by the component area of ​​the damaged component;

[0090] The overall damage degree determination module 203 is used to determine the overall damage degree of the vehicle to be tested based on the component type and component damage degree of each damaged component.

[0091] For a detailed introduction to the vehicle damage determination device for a used car provided by the present invention, please refer to the embodiment of the vehicle damage determination method for a used car described above, and the present invention will not be elaborated herein.

[0092] Based on the above embodiments:

[0093] As an optional embodiment, the vehicle damage determination device for a used car further includes:

[0094] A damaged component deduction price determination module is used to determine, for each damaged component, the product of the damage degree of the damaged component and the standard component price of the damaged component when the damaged component is not damaged as the damaged component deduction price;

[0095] The first transaction price determination module is used to take the difference after deducting the damaged parts deduction price corresponding to all damaged parts from the overall standard price of the tested vehicle when it is not damaged as the transaction price of the tested vehicle; or,

[0096] An overall deduction price determination module, used to take the product of the overall standard price when the vehicle to be tested has no damage and the overall damage degree of the vehicle to be tested as the overall deduction price;

[0097] The second transaction price determination module is used to take the difference between the overall standard price when the vehicle to be tested is not damaged and the overall deducted price as the transaction price of the vehicle to be tested.

[0098] Please refer to Figure 3 , Figure 3 The present invention provides a schematic diagram of a second-hand vehicle damage determination device, wherein the second-hand vehicle damage determination device comprises:

[0099] Memory 301, used for storing computer programs;

[0100] The processor 302 is used to implement the steps of any of the above-mentioned methods for determining vehicle damage of a used car when executing a computer program.

[0101] For a detailed introduction to the vehicle damage determination device for a used car provided by the present invention, please refer to the embodiment of the vehicle damage determination method for a used car described above, and the present invention will not be elaborated herein.

[0102] The present invention also provides a storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of any of the above-mentioned methods for determining vehicle damage of a used car are implemented.

[0103] For a detailed introduction to the storage medium provided by the present invention, please refer to the above-mentioned embodiment of the method for determining vehicle damage of a used car, and the present invention will not be elaborated here.

[0104] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. It should also be noted that in this specification, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, article or device including the element.

[0105] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for determining vehicle damage of a used car, characterized in that: include: Recognize the obtained appearance image of the vehicle to be tested by using a preset recognition model to determine the damaged parts of the vehicle to be tested, the damage type of each damaged part, and the damage area of ​​each damaged part; For each damaged component, determine the damage area ratio of the damaged component, and determine the component damage degree of the damaged component based on the damage type and damage area ratio of the damaged component; wherein the damage area ratio is a quotient obtained by dividing the damage area of ​​the damaged component by the component area of ​​the damaged component; Based on the component type and component damage degree of each damaged component, the overall damage degree of the vehicle to be tested is determined.

2. The vehicle damage determination method for a used car according to claim 1, characterized in that: The determining the damage degree of the damaged component based on the damage type of the damaged component and the damage area ratio includes: Determine the damage type weight corresponding to the damaged component based on the preset corresponding relationship between the damage type of the damaged component and the damage type weight; The product of the damage type weight corresponding to the damaged component and the damage area ratio of the damaged component is used as the component damage degree of the damaged component.

3. The vehicle damage determination method for a used car according to claim 2, characterized in that: The damage types include any one or a combination of scratches, dents, wrinkles, cracks and perforations; and the damage type weights corresponding to scratches, dents, wrinkles, cracks and perforations increase in sequence.

4. The vehicle damage determination method for a used car according to claim 1, characterized in that: The determining of the overall damage degree of the vehicle to be tested based on the component type and component damage degree of each damaged component includes: Determine the component type weight corresponding to each damaged component based on the preset correspondence between the component type of the damaged component and the component type weight; For each damaged component, the product of the component type weight of the damaged component and the component damage degree is used as the weighted component damage degree of the damaged component; The sum of the weighted component damage degrees of all damaged components in the vehicle to be tested is taken as the overall damage degree of the vehicle to be tested.

5. The vehicle damage determination method for a used car according to claim 1, characterized in that: After determining the damage degree of the damaged component based on the damage type and damage area ratio of the damaged component, the method further includes: For each damaged component, the product of the damage degree of the damaged component and the standard price of the damaged component when the damaged component is not damaged is used as the deducted price of the damaged component; The difference between the overall standard price of the vehicle to be tested when there is no damage and the damaged parts corresponding to all the damaged parts after deducting the damaged parts prices is taken as the transaction price of the vehicle to be tested.

6. The vehicle damage determination method for a used car according to claim 1, characterized in that: After determining the overall damage degree of the vehicle to be tested based on the component type and component damage degree of each damaged component, the method further includes: The product of the overall standard price of the vehicle under test when there is no damage and the overall damage degree of the vehicle under test is used as the overall deduction price; The difference between the overall standard price of the vehicle to be tested when there is no damage and the overall deduction price is taken as the transaction price of the vehicle to be tested.

7. A vehicle damage determination device for a used car, characterized in that: include: An identification module is used to identify the obtained appearance image of the vehicle to be tested by using a preset identification model, and determine the damaged parts in the vehicle to be tested, the damage type of each damaged part, and the damage area of ​​each damaged part; A component damage degree determination module, for determining, for each damaged component, a damage area ratio of the damaged component, and determining the component damage degree of the damaged component based on the damage type and damage area ratio of the damaged component; wherein the damage area ratio is a quotient obtained by dividing the damage area of ​​the damaged component by the component area of ​​the damaged component; The overall damage degree determination module is used to determine the overall damage degree of the vehicle to be tested based on the component type and component damage degree of each damaged component.

8. The vehicle damage determination device for a used car according to claim 7, characterized in that: The vehicle damage determination device for a used vehicle further includes: A damaged component deduction price determination module is used to determine, for each damaged component, the product of the damage degree of the damaged component and the standard component price of the damaged component when the damaged component is not damaged as the damaged component deduction price; A first transaction price determination module is used to take the difference after deducting the damaged parts corresponding to all the damaged parts from the overall standard price of the tested vehicle when it is not damaged as the transaction price of the tested vehicle; or An overall deduction price determination module, used to take the product of the overall standard price of the vehicle to be tested when there is no damage and the overall damage degree of the vehicle to be tested as the overall deduction price; The second transaction price determination module is used to take the difference between the overall standard price of the vehicle to be tested when there is no damage and the overall deducted price as the transaction price of the vehicle to be tested.

9. A vehicle damage determination device for a used car, characterized in that: include: Memory for storing computer programs; A processor is used to implement the steps of the vehicle damage determination method for a used car as described in any one of claims 1 to 6 when executing the computer program.

10. A storage medium, characterized in that: The storage medium stores a computer program, which, when executed by a processor, implements the steps of the method for determining vehicle damage of a used car as claimed in any one of claims 1 to 6.

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