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Vehicle VIN character recognition and character carving depth detection system and detection method

A character recognition and depth detection technology, applied in character and pattern recognition, measuring devices, instruments, etc., can solve the problems of low degree of automation, low efficiency, inability to get rid of manual labor, etc., achieve high degree of automation, improve accuracy, reduce The effect of small misrecognition rate

Active Publication Date: 2021-11-05
TIANJIN UNIV
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AI Technical Summary

Problems solved by technology

Compared with the traditional manual visual inspection method, although the measurement device can significantly improve the detection accuracy of the character code depth, it still cannot get rid of manual participation, and it has to be carried out out of the production line, which is not efficient and has a low degree of automation

Method used

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  • Vehicle VIN character recognition and character carving depth detection system and detection method
  • Vehicle VIN character recognition and character carving depth detection system and detection method
  • Vehicle VIN character recognition and character carving depth detection system and detection method

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Embodiment Construction

[0042] Specific technical solutions of the present invention will be described in connection with examples.

[0043] like figure 1 As shown, a character identification and character of a vehicle VIN code can be printed depth detection method, including the following steps:

[0044] S1, moving the Workie Workpiece with the VIN code or the sensor of the Moving the measuring device through the industrial robot, allowing the workpiece to be tested to be at the initial scanning position of the measuring device; the initial scan position is illuminated in the VIN Code Character On the position of the side.

[0045] S2, in the current position, take the VIN code, used to perform the two-dimensional identification of characters, using a certain image processing method and character identification method, including character area positioning, character segmentation, template matching character identification method, etc. The two-dimensional identification result of the position and charact...

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Abstract

The invention relates to the technical field of automobile production, in particular to a vehicle VIN character recognition and character carving depth detection system and detection method. The method comprises: enabling a to-be-measured workpiece to be located at an initial scanning position of the measuring device; photographing the VIN code for two-dimensional recognition of characters; scanning the obvious defects; carrying out scanning by moving a workpiece to be detected or a sensor, so that a laser strip connecting line of the sensor scans a VIN code character area, and carrying out continuous photographing to obtain an image; calculating three-dimensional information; reconstructing characters according to the three-dimensional result, and comparing the reconstructed characters with a two-dimensional recognition result; and if the three-dimensional identification result is consistent with the two-dimensional identification result, continuing to output the detection result. According to the invention, the accuracy of the identification effect is improved, the measurement convenience is improved, the high precision and repeatability of the measurement are ensured, the measurement can be realized, and the measurement result can be effectively analyzed and evaluated.

Description

Technical field [0001] The present invention relates to the technical field of automobile production, in particular, it relates to a vehicle VIN number and character recognition character hit detection system and method for detecting the depth of cut. Background technique [0002] VIN (Vehicle Identification Number, or frame number), referred to the VIN, the 17 numbers or letters, unique number for identifying the automotive vehicle. VIN code correctly identify the vehicle information helps us identify the car manufacturer, model type, engine type, model year terms and factory order number. VIN code is dedicated coders character information printed on the car body, the national standard (GB16735), print VIN code should be easy to observe, clearly visible, easy-to-rubbing and facilitate inspection examination. VIN hit directly engraved on the frame, body frame for free, it can hit directly engraved on the vehicle easily remove or replace the structural member. When the VIN code id...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/20G01B11/22
CPCG01B11/22Y02P90/30
Inventor 陈津平刘启浩刘常杰
Owner TIANJIN UNIV
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