Device and a method for counting layers of stacked slices by using camera array

Abstract

The invention discloses a device and a method for automatically counting the layers of stacked super-thin slices by using a camera array. The device comprises a chassis, an embedded industrial controlmachine, a measuring tray, an LED light source, a multi-camera imaging module and image analyzing and counting software. The device and the method are characterized in that (1) a space-intersecting dual-row camera array structure is used and the conflict between high-resolution imaging requirements and the size of a field of view and the physical dimensions of camera installation is solved, (2) apeak positioning and ID profile signal matching algorithm is provided and the problem of multi-camera image fusion and splicing without obvious feature points is solved, and (3) a line structure detection algorithm of frequency domain filtering, correlation measurement and prior knowledge fusion is used, and the super-thin slice stacked image stripe detection accuracy under low contrast, interference and abnormal conditions is improved. According to the device and the method, the measurement range and resolution of a machine vision slice stack layer counting instrument are effectively expanded, and the device and the method have wide application prospects in the printing and packaging, semiconductor and electronics industries.

Description

technical field [0001] The invention relates to a camera array-based sheet stack counting device and method, which belongs to the field of machine vision technology, and particularly relates to a counting device and method for ultra-thin stacked sheets of 0.08mm and 0.11mm. Background technique [0002] At present, in the packaging and printing industry, the counting of paper products is a very important and indispensable work. If the counting is not accurate, it will cause direct economic losses to the enterprise. Similar applications also include the quantity measurement of thin products such as silicon wafers, bank cards, solar wafers, PCB circuit boards and decoration stickers. [0003] Due to the large differences in the imaging effects of different stacked end faces, the accurate counting of ultra-thin laminated sheets with machine vision mainly faces the following three major problems: (1) Under the premise of keeping the current camera resolution unchanged, meet the ...

AI Technical Summary

Problems solved by technology

[0003] Due to the large difference in the imaging effects of different stacked end faces, the accurate counting of ultra-thin stacked sheets by machine vision mainly faces the following three major problems: (1) Under the premise of keeping the current camera resolution unchanged, meet the requirements of thinner Product quantity detection requirements; (2) Quantity detection tasks: detection problems caused by product damage, end-face thickness changes, uneven illumination, uneven placement, etc.; (3) Multi-camera image stitching task: features of overlapping areas between product end-face images Splicing Difficulty Caused by Invisibility

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