Method and device for measuring bamboo tube diameter based on digital image processing technology

Abstract

The invention relates to a method and device for measuring the diameter of a bamboo tube based on digital image processing technology. It uses an industrial camera to collect a digital image of the cross-section of the bamboo tube, and automatically processes it through an image processing program to measure the maximum outer diameter, the smallest outer diameter, and the minimum outer diameter of the bamboo tube. Average outer diameter, maximum inner diameter, smallest inner diameter and average inner diameter, and display the measurement results. Because the present invention adopts the industrial camera perpendicular to the bamboo tube cross-section to collect the bamboo tube cross-sectional image, the image distortion is small and the precision is high; through the automatic processing and measurement of the digital image processing program designed, the measurement accuracy can be improved by increasing the number of sampling times; non-contact method The method for measuring the diameter of the bamboo tube has high speed and high efficiency, and is convenient for realizing automation of bamboo processing; the invention is simple to realize, has fast measurement speed, is stable and reliable, has detailed diameter parameters and high precision.

Description

technical field [0001] The invention relates to a fast non-contact bamboo tube diameter measuring method and its device, which is especially suitable for the occasions where the bamboo tube diameter needs to be detected in various bamboo product production lines of bamboo processing enterprises, and the bamboo tube diameter is uneven and the cross-sectional profile of the bamboo tube is non-circular. . Background technique [0002] my country is the country with the most abundant bamboo resources. Bamboo is a short-cycle renewable resource. In recent years, my country's bamboo industry has developed rapidly, and a series of bamboo products have been developed, including bamboo plywood, bamboo laminated lumber, recombined bamboo, and bamboo particleboard. , bamboo veneer, etc. In the bamboo processing industry, the production process of most bamboo products consists of bamboo tube cutting, splitting, rough planing, (cooking, carbonization, insect-proof and mildew-proof treatm...

AI Technical Summary

Problems solved by technology

In addition, because the cross-section of bamboo (such as moso bamboo) is not necessarily circular, some bamboo cross-sections are circular, some are elliptical, and some are non-circular and non-elliptical. The most important parameter is the minimum inner diameter, so whether it is manual measurement or visual measurement, the accuracy is low. Due to measurement or judgment errors, the utilization rate of bamboo is low, the production efficiency is low, and the production cost of bamboo products remains high.

[0003] In addition, almost all production processes in the bamboo processing industry are not only intermittent and discontinuous production lines except for bamboo particleboard, but also each process is composed of isolated production equipment and manually operated, which is a labor-intensive production process.

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