Online size measurement method applied to automobile bulb

Abstract

The invention belongs to the field of image processing and pattern recognition, and relates to an online size measurement method applied to an automobile bulb, which can comprehensively and effectively acquire the size of each part of the automobile bulb and totally meet requirements involved in the national standard GB15766.1-2008. According to a computer vision principle, advantages of a hardware system in a contact measurement method and advantages of an image processing algorithm in a non-contact measurement method are combined, a complete, practical and highly transplantable hardware system is designed, and median filtering, bilateral filtering, Canny algorithm, adaptive binaryzation, ellipse fitting, rotating outer enclosure rectangle, curvature restriction and various appropriate threshold restriction methods are used for accurately calculating the size of each part of the automobile bulb. The detection method designed in the invention totally meets requirements in the national standard GB15766.1-2008, the method has the advantages of quicker measurement speed and higher precision compared with the traditional measurement method, the transplantability is good, actual demands of a factory can be met, and the method can be widely applied to measurement of other parts.

Description

technical field [0001] The present invention relates to a method for online size measurement of light bulbs for vehicles. More specifically, the detection method provided by the invention can comprehensively and effectively obtain the dimensions of various parts of light bulbs for vehicles and fully meet the national standard GB15766.1 -Requirements covered in 2008. Background technique [0002] In order to ensure the product quality of automobiles, improve the safety factor and user experience, the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the Standardization Administration of China jointly issued mandatory national standards for the size and photoelectric performance requirements of road motor vehicle bulbs (National Standard GB15766.1-2008), used to scientifically regulate the production of automotive bulbs and strictly control their quality. [0003] At present, the size measurement methods of vehicle ...

AI Technical Summary

Problems solved by technology

However, these image processing technologies have not been applied to the online detection of vehicle bulbs. On the one hand, due to the complexity of the algorithms involved, the online detection cannot meet the requirements of real-time detection; on the other hand, due to the limitations of hardware facilities , resulting in low accuracy of the obtained image, which affects the detection accuracy

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