Facial mask position inspection method and device

Abstract

The embodiment of the invention provides a facial mask position inspection method and device, wherein the method comprises the steps: the electrical level state of each sensor in a first sensor arrayis acquired, and whether a to-be-inspected facial mask arrives at a to-be-inspected area is judged according to the electrical level state of each sensor; if the to-be-inspected facial mask arrives atthe to-be-inspected area, an image acquisition device is controlled to acquire an image of the to-be-inspected facial mask located at the to-be-inspected area and sends the image of the to-be-inspected facial mask; the image of the to-be-inspected facial mask is subjected to differential processing with a preset standard image to obtain a differential image; the error value between the to-be-inspected facial mask image and the preset standard image is calculated according to the differential image, whether the error value is less than the preset threshold value is judged, and if the error value is less than the preset threshold value, the printing quality of the to-be-inspected facial mask is qualified. The facial mask position inspection method and device provided by the embodiment of the invention can effectively improve the inspection accuracy of the facial mask position and improve the detection efficiency of the facial mask quality.

Description

technical field [0001] The invention relates to the technical field of plastic mask manufacturing, in particular to a method and device for checking the position of a mask. Background technique [0002] Various printing quality problems are prone to occur in the existing PVC (polyvinyl Chloride) mask screen printing, such as irregular characters, lines or symbols on the mask, poor brightness, incomplete writing, jagged, broken lines, virtual Edge and bullet oil, etc., but at present, the existing printing problems mainly rely on manual troubleshooting, and because the position information of the mask to be inspected cannot be accurately located, the mask quality inspection efficiency is low and the inspection quality is not high. Contents of the invention [0003] In view of this, the purpose of the embodiments of the present invention is to provide a mask position inspection method and device, which can effectively improve the above problems. [0004] A preferred embodim...

AI Technical Summary

Problems solved by technology

[0002] Various printing quality problems are prone to occur in the existing PVC (polyvinyl Chloride) mask screen printing, such as irregular characters, lines or symbols on the mask, poor brightness, incomplete writing, jagged, broken lines, virtual Edge and bullet oil, et

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