Single cigarette empty head detection method based on machine vision and special equipment

Abstract

The invention discloses a single cigarette empty head detection method based on machine vision. The method comprises the following steps: (1) acquiring and processing a cigarette image by an endoscope, thus acquiring a preprocessed image P1; (2) extracting and processing a blue channel image P4 of the image P1; (3) preliminarily determining the position of the center of a circle of a cigarette in the image; (4) preliminarily determining the position of the cigarette to be detected in the image, and fitting the circle center coordinates and the radius in an area in which the cigarette is positioned; (5) judging the cigarette area is a filter tip or a cigarette head; (6) determining a boundary point between cut tobacco and cigarette paper of the cigarette; and (7) calculating the distance between the inner and outer boundary points, wherein if the distance is less than a certain threshold value, the cigarette is considered to be qualified, otherwise, the cigarette is an empty head cigarette and is removed. The invention also discloses special equipment for the detection method. According to the method, the cigarette image is acquired by the endoscope, and due to accurate computer processing, the single cigarette empty head can be accurately and rapidly detected.

Description

technical field [0001] The invention relates to a method for detecting the empty end of a cigarette, in particular to a method for detecting the empty end of a single cigarette based on machine vision; the invention also relates to an endoscope image acquisition device. Background technique [0002] The traditional cigarette packaging machine empty detection and removal is carried out in the small pack mold box, when there is a short cigarette in the small pack mold box, all 20 cigarettes will be removed as residual cigarettes for recycling, resulting in great waste . At present, there are related products on the market to address this phenomenon. These products are installed in the lower cigarette storage of the packaging machine, and the empty cigarettes are detected and eliminated before the cigarettes are loaded into the mold box. and changes in operating habits, do not use market promotion), these products use infrared photoelectric sensors as detection components, con...

AI Technical Summary

Problems solved by technology

However, limited by the space of the packaging machine, ordinary industrial cameras and lenses cannot be installed, and the quality of electronic endoscopes purchased on the market cannot be guaranteed.

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