Rapid lens flaw detection method and apparatus thereof

Abstract

The invention discloses a rapid lens flaw detection method and an apparatus thereof. The method comprises the following steps: equally dividing the surface of a lens to be detected into n<2> parts, respectively obtaining the images of all the parts, and obtaining n<2> images within a preset time which is used for controlling the image obtaining rate; 2, carrying out median filtering, black hat transformation and binary processing on the n<2> images respectively, and partitioning off defective images; 3, carrying out opening operation on the defective images to filter out non-flaw interference parts; and 4, drawing contours of the defective images subjected to non-defective interference filter, there are flaws on the surface of the lens to be detected if there is a counter, and no flaws are on the surface of the lens to be detected if there is no counter. The rapid lens flaw detection method provided in the invention allows scratches on the lens to be clearly detected through a surface defect detection method based on the mathematical morphology under the high speed motion of a platform, and defect types to be effectively discriminated, and has the characteristics of fast speed, objective detection result and the like.

Description

Technical field [0001] The present invention belongs to the field of lens cleaning, and more specifically, relates to a method and device for rapid detection of lens defects. Background technique [0002] In recent years, with the rapid development of the communications industry, mobile phones have become a necessity in our lives. Many mobile phone manufacturers want to produce high-quality mobile phones to satisfy consumers. They strictly control every process of mobile phone production. Clean and scratch-free mobile phone lenses are the most basic requirement. How to detect whether the cleaned mobile phone lenses are clean? The first step is for the staff to check with the naked eye. For example, in printing production, the production line usually runs tens or even hundreds of meters from the time the human eye detects a defect to the time it responds. , which results in a huge waste of paper and ink. Thirdly, the traditional human eye detection method is not sensitive t...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects of the prior art, the purpose of the present invention is to provide a rapid detection method for lens defects, which aims to solve the problem of low efficiency and no detection of small scratches caused by human eye detection in the prior art

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