Method and device for detecting tobacco stem outline structures based on images

Abstract

The invention discloses a method and a device for detecting tobacco stem outline structures based on images; the device comprises a tobacco stem discrete device, an image collector above the belt conveyor of the discrete device and a computer image processing system connected with the image collector; the tobacco stem discrete device is composed of a flow control and transport belt conveyor, tobacco stem shifting levers and a high-speed conveying belt; the control of the tobacco stem flow is realized by the control of the transporting speed of the flow control and transport belt conveyor; the tobacco stem shifting levers at certain intervals are installed below the discharge outlet of a flow controller; a high-speed belt is installed below the shifting levers; the tobacco stems intercepted, rebounded and dispersed by the shifting levers slide to the high-speed belt and are further dispersed by using the speed difference between two stages; and finally, materials are laid on the high-speed belt at a discrete state and sent to an image detection position. According to the method and the device for detecting tobacco stem outline structures based on the images, the degree of automation for the quality detection of tobacco stems can be improved, the workers' labor intensity is reduced, the detection information is enriched and the quality control level of threshing and drying is improved.

Description

technical field [0001] The invention relates to the field of quality detection in the production process of threshing and redrying tobacco leaves, specifically a method and device for detecting the external dimensions of tobacco stems, such as length, width, projected area, and external contour, by using visual technology, and classifying and counting them . Background technique [0002] The length and width of tobacco stems have a significant impact on the structure and yield of cut stems, so the long stem rate and thick stem rate are important detection indicators in the quality inspection process of tobacco stem processing. Studies at home and abroad have shown that tobacco stems with a diameter greater than 4 mm and a length greater than 20 mm have better shredded quality, while those with a diameter of less than 4 mm or a length of less than 20 mm are significantly lower in shredded quality. "Technical Specifications for Tobacco Leaf Threshing and Redrying" (YC / T146-20...

AI Technical Summary

Problems solved by technology

Use a size plate to measure the length of the tobacco stem, place the tobacco stem with a length greater than 20mm and the tobacco stem with a length less than or equal to 20mm in different sample trays, weigh them respectively and calculate the ratio of the long stem mass to the total mass, which is the long stem rate , the detection method is labor-intensive and the detection error is large. Each detection can only obtain one indicator of the long-stem rate, and it is impossible to obtain the shape, structure, size and length distribution of the tobacco stems of the batch of samples.

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