With the development of automation in manufacturing industry, the production efficiency has been improved rapidly. At the same time, the integrity, qualification and aesthetics of product appearance should be guaranteed. Visual inspection system came into being. What can visual inspection system detect?
Visual inspection system technology is a process of information processing and feedback through "vision", including image enhancement, data coding and transmission, smoothing, edge sharpening, segmentation, feature extraction, image recognition and understanding. After these processing, the quality of the output image is improved to a certain extent, which not only improves the visual effect of the image, but also facilitates the computer to analyze, process and identify the image.
The efficiency of manual detection is in a fixed range, which can not be greatly improved. In the repeated and mechanized inspection process of the assembly line, it is easy for the inspectors to fatigue and reduce the detection efficiency; while the machine vision detection equipment can detect products faster, especially in the production line to detect high-speed moving objects, the machine can improve the detection efficiency.
Due to the physical conditions of the human eye, even if we rely on a magnifying glass or a microscope to detect products, it will be affected by subjectivity, and the accuracy can not be guaranteed, and the standards of different inspectors will also have differences; in terms of accuracy, the machine has obvious advantages, and its accuracy can reach one thousandth of an inch. Moreover, machine vision inspection equipment is not subject to subjective control. As long as there is no difference in parameter settings, multiple machines with the same configuration can maintain the same accuracy.
With the gradual improvement of visual inspection system technology, it has replaced manual detection. We should know that the most important thing for the factory is "controlled". We can accept that some special defects have not occurred, but we must know that some frequently occurring unacceptable defects can be found.
Visual inspection system can not completely replace manual visual inspection in the short term, the main reason is that it is not intelligent enough, and small and medium-sized enterprises are not willing to invest. But for the factory quality control, machine vision inspection is more reliable than manual inspection.