Vehicle VIN (Vehicle Identification Number) identification method based on Android platform

An identification method and a vehicle identification code technology, applied in the field of vehicle VIN identification based on the Android platform, can solve the problems of irregular handwriting, increased business volume, low efficiency, etc.

An identification method and a vehicle identification code technology, applied in the field of vehicle VIN identification based on the Android platform, can solve the problems of irregular handwriting, increased business volume, low efficiency, etc.

CN107423732AInactive Publication Date: 2017-12-01DALIAN JIAOTONG UNIVERSITY
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  • Vehicle VIN (Vehicle Identification Number) identification method based on Android platform
  • Vehicle VIN (Vehicle Identification Number) identification method based on Android platform
  • Vehicle VIN (Vehicle Identification Number) identification method based on Android platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] see figure 1 , in this example, the vehicle VIN identification system needs to be installed in a device with an Android platform, then scan the vehicle identification code, and upload it to the server or cloud platform after identification.

[0053] Most of the vehicle identification codes are under the front windshield of the car. Before scanning and identification, it is necessary to ensure that the windshield is clean and tidy, free of stains, dust, spots and sludge, etc. The environment of the vehicle VIN should be in the shadow as much as possible, or Create shadows through cardboard occlusion to ensure that there will be no mirror reflection when obtaining vehicle VIN photos; when using Android devices to obtain vehicle VINs, master the shooting angle to avoid reflections on the car windshield, and try not to shake your hands when shooting. After fully focusing, complete the shooting to obtain a clear vehicle VIN photo; and also ensure that the 17-character vehicl...

Embodiment 2

[0057] In this example, refer to figure 2 , will focus on describing the detailed process of the vehicle VIN identification system to obtain the vehicle identification code.

[0058] Turn on the vehicle VIN recognition system, the system will directly call the camera, display the image captured by the camera on the preview interface, and then place the captured vehicle VIN in the effective information area of ​​the shooting screen, and take the vehicle VIN picture after calling the auto focus function , locate and cut the valid information area in the picture to obtain a valid vehicle VIN picture and store it locally on the mobile phone.

[0059] Affected by background noise, the captured vehicle VIN pictures need to be denoised before recognition. The main work of the picture preprocessing process is image grayscale, top-hat transformation, image enhancement and binarization. After the image preprocessing operation, the preprocessed binary image will be displayed on the rec...

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Abstract

The invention discloses a vehicle VIN (Vehicle Identification Number) identification method based on an Android platform. The method comprises the following steps: S1, an implementation process of calling a camera based on the Android platform is designed, and a scanning frame for positioning and acquiring the vehicle identification number is added to a preview interface of the camera; S2, the camera is adopted to acquire vehicle VIN image information in an effective area, and the information is stored in a mobile phone locally; S3, image preprocessing such as image graying, top hat transformation, image enhancement and binary processing is carried out on the vehicle VIN images; S4, based on a Tesseract-OCR image identification class library, character feature extraction is carried out on the vehicle VIN images after preprocessing, and a vehicle VIN character library generated by training is used for matching and identification; S5, the identification result is verified according to a VIN coding rule; and S6, vehicle VIN images are gathered, and based on an English character library officially provided, the vehicle VIN character library is generated through training.

Description

technical field [0001] The invention relates to the technical field of graphic recognition, in particular to a vehicle VIN recognition method based on an Android platform. Background technique [0002] As of the end of 2016, according to statistics from the Traffic Management Bureau of the Ministry of Public Security, the number of motor vehicles in the country has reached 290 million, of which 194 million are cars, and private cars have accounted for 75% of the total number of cars. million vehicles, the highest level in history, and my country has become a veritable automobile power. With the prosperity and development of the automobile industry, many automobile-related follow-up service industries have been born, such as new vehicle sales, vehicle inspection, insurance claims, accident handling, maintenance, second-hand car transactions, and vehicle scrap recycling. The most important and unique information of the vehicle needs to be entered - the Vehicle Identification N...

Claims

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Application Information

Patent Timeline
01 Dec 2017
Publication
CN107423732A
IPC
G06K9/20
CPC
G06V10/23
Inventors
曾洁; 刘宾坤