Single-camera motion detection method and device for the number of ultra-high stacked and ultra-thin cigarette labels

Abstract

A single-camera motion detection method and device for the number of ultra-high stacked and ultra-thin cigarette labels. The steps of the method are: S1: Adjust the focal length of the camera according to the imaging resolution requirements of the cigarette labels, and then adjust the measurement of each camera according to the thickness of the stack of cigarette labels. The position of the station is moved so that the images collected by the movement have sufficient overlapping areas; S2: Automatically adjust the exposure time and red, green and blue gain parameters according to the environmental light source and paper imaging characteristics; To determine the affine matrix between each image in the subsequent image group; S3: use a single camera to move multiple times to obtain a sequence of laminated paper images; Image line splicing and vertical section line sampling statistical counting processing to complete the counting. The device is used to implement the above method. The invention has the advantages of simple structure, convenient operation, high detection precision and the like.

Description

technical field [0001] The invention mainly relates to the technical field of printing and packaging, in particular to a single-camera motion detection method and device for the quantity of ultra-high laminated and ultra-thin cigarette labels. Background technique [0002] Cigarette labels are packaging boxes for tobacco products, which are high-end printing products. After the cigarette label is printed, it is necessary to accurately count and repack the batch of products, which is not only the control of the inventory, but also the connection with the next process. Traditional mechanical or pneumatic counting devices have the risk of damaging paper and forming scratches, so they are rarely used in cigarette label counting. [0003] The method based on machine vision has been widely used due to its advantages of no loss and low error. Among them, there is an urgent demand for non-destructive, ultra-thin, ultra-high laminated cigarette label real-time quantity detection de...

AI Technical Summary

Problems solved by technology

However, an ordinary single camera cannot balance between high resolution and large measurement range, and cannot achieve full coverage and high resolution acquisition of ultra-high laminated cigarette label images, so a single camera cannot complete the counting task of high laminated paper

On the other hand, limited by the size, resolution and field of view of the camera itself, the multi-camera array method cannot meet the gap-free measurement requirements of ultra-thin smoke level stacking, and the increase in the stacking height will lead to an increase in the number of cameras, and its cost will increase. Significantly improved, so the application of camera arrays in ultra-thin, ultra-high stack paper counts is limited

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