Color camera RGB image fusion visual inspection system and detection method

Abstract

The invention relates to a color camera RGB image fusion visual inspection system adopting combined light illumination. The inspection system includes a high-precision color camera, a coaxial light source and four strip parallel light sources. The coaxial light and strip parallel light form a combined light illumination system to illuminate the surface of a to-be-inspected object, wherein the coaxial light source is located right above the to-be-inspected object and under the color camera, the four strip parallel light sources are located above the to-be-inspected object at a certain angle, the coaxial light and strip parallel light cooperate with each other, and red, green and blue colored lights are employed to illuminate the to-be-inspected object, the color camera take photos, the collected images are transmitted to a computer, the computer extracts the images of RGB three channels respectively, the images of each channel are subjected to processing and defect identification respectively for fusion detection of black spots, scratches, pressure damages, scratching and other defects on the surface of the to-be-inspected object.

Description

technical field [0001] The invention belongs to the field of defect recognition in machine vision detection systems, and in particular relates to a color camera RGB image fusion vision detection system with combined light illumination. technical background [0002] With the improvement of living standards, people not only pay attention to the performance of the products in the process of purchasing products, but also put forward higher requirements on the appearance quality of the products, such as the surface quality of mobile phone casings, bottle caps, tea cans, etc. directly affect people's purchases. [0003] Due to various factors, various defects such as black spots, scratches, crushes, scratches, etc. will inevitably occur on the surface of mobile phone casings, bottle caps, tea cans, etc. during the production and processing process. Identify various defects in products and reject unqualified products. [0004] At present, taking the surface defect detection of th...

AI Technical Summary

Problems solved by technology

[0004] At present, taking the surface defect detection of the mobile phone shell as an example, there are already many methods for the surface defect detection of the object to be tested. Their detection devices and imaging optical paths are different, such as the detection system and method with the publication number CN104914109A. The mechanical device is complicated, such as The detection device and method whose publication number is CN102218406A adopts combined light illumination and multi-station photography to obtain images to process and identify different defects. It has the characteristics of high precision and stability, but the imaging device is complicated and the photographing process has many procedures

Images