A machine vision-based online detection method and detection device for cracks in preserved eggs

Abstract

The invention discloses an online detection method and detection device for cracks in preserved eggs based on machine vision. The detection device includes conveyor belt, dark box, light source, industrial camera, solenoid valve, controller and computer. The method is: ①collection of preserved egg images; ②automatic cropping of preserved egg images; ③preprocessing of preserved egg images; ④extraction of relevant characteristic parameters; ⑤establishment of crack discrimination model; The invention uses machine vision for detection, can realize online detection and grading of cracks in preserved eggs, has low application environment requirements, low equipment cost, and high degree of freedom of choice. Compared with acoustic detection, it has better application and promotion prospects; industrial cameras are used to flip preserved eggs Multi-angle photography, full detection range; using Haar feature detection, automatic frame selection, real-time, concise, accurate, high flexibility; efficient image processing and establishment of a discrimination model, an effective detection method for the vacant part of the online detection of preserved egg cracks method.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing of agricultural products, in particular to an online detection method and detection device for cracks in preserved eggs based on machine vision. Background technique [0002] During the production process of preserved eggs (preserved eggs), due to common reasons such as production technology and workers' operations, preserved eggs are easily damaged. Once the shell is damaged and cracked, the toxic and harmful substances in the preserved egg marinade will enter the preserved egg. Therefore, damaged and cracked preserved eggs are inedible. In order to prevent harmful products from entering the market, cracked preserved eggs must be removed before leaving the factory. [0003] In our country, in the production process of preserved eggs, the quality control of preserved eggs is still the most manual method, which is time-consuming and labor-intensive, prone to errors, low efficiency a...

AI Technical Summary

Problems solved by technology

Preserved eggs have been cured and gelled, so it is extremely difficult for light to penetrate, and it is impossible to highlight cracks through transmission.

3. At present, static crack detection of domestic preserved eggs exists, but the dynamic online detection method is blank

4. Most detection methods have cumbersome algorithms and a large amount of calculation

Images