Offset plate surface detection method and system based on machine vision

Abstract

The invention provides an offset plate surface detection method based on machine vision and an offset plate surface detection system based on the machine vision. The system comprises image acquiring equipment, image processing equipment, system lighting equipment and a UPS (Uninterrupted Power Supply), wherein the image acquiring equipment is used for acquiring the information of the original image of the surface of an offset plate; the image processing equipment is used for processing the original image information acquired by the image acquiring equipment; the system lighting equipment is used for providing the imaging light to the image acquiring equipment; and the UPS is used for implementing the power-off protection as well as the power management for the whole system. The offset plate surface detection system is used in match with the conventional offset plate production line to realize the real-time online detection of the surface of the offset plate, and reduces the omission factor, releases the manual labor, decreases the production cost of manufacturers, improves the detection precision, as well as improves the industrial automation level of a production line.

Description

technical field [0001] The invention relates to the fields of machine vision detection and industrial automation, in particular to a method and system for detecting the surface of an offset printing plate based on machine vision. Background technique [0002] Offset printing plate is a high-quality printing plate for lithographic printing. Since its inception, it has developed rapidly around the world and is now widely used in the printing of newspapers, magazines, and books. In the production process, due to the quality of raw materials, production process and other reasons, the surface of offset printing plates will have blemishes or defects, such as decoating, stains, scratches, wrinkles, etc., which will affect the quality of the product. [0003] At present, domestic manufacturers of offset printing plates mainly rely on workers' naked eyes to detect defects on the surface of offset printing plates. However, due to the subjective factors of limited people, the situati...

AI Technical Summary

Problems solved by technology

[0005] 1. High missed detection rate: due to the subjective factors of limited people, the probability of missed detection during the detection process of offset printing plates is very high;

[0006] 2. High cost: the missed detection rate is high, and the manufacturer will suffer a large economic loss; moreover, with the increase of workers' wages, the labor cost of the manufacturer will also become higher and higher;

[0007] 3. Low detection accuracy: relying solely on manual detection, the detection accuracy is bound to be very low;

[0008] 4. Low production efficiency: manual inspection restricts the speed of the production line; and the production environment of offset printing plates is slightly toxic, and long-term inspection will affect the detection efficiency and affect the health of workers;

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