An online adaptive tobacco width measurement method based on machine vision

A technology of machine vision and width measurement, which is applied in the computer field, can solve the problems of low efficiency in measuring the width of shredded tobacco, and achieve the effect of realizing online and automation, improving efficiency, and ensuring effectiveness and accuracy

Active Publication Date: 2022-03-22
HANGZHOU ANMAISHENG INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the technical problem of low efficiency in measuring the width of shredded tobacco at present

Method used

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  • An online adaptive tobacco width measurement method based on machine vision
  • An online adaptive tobacco width measurement method based on machine vision
  • An online adaptive tobacco width measurement method based on machine vision

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0023] An online adaptive tobacco width measurement method based on machine vision, such as figure 1 As shown, this embodiment includes the following steps: A) Grab some shredded tobacco onto the shooting table, and flatten the shredded tobacco with a set pressure. like Figure 4 As shown, it is a real photo of shredded tobacco after flattening. The shredded tobacco is arranged randomly and overlapped. It is necessary to search for effective shredded tobacco that can be measured.

[0024] B) A camera is used to capture a color image of the shredded tobacco. An image enhancement operation is performed on the color image of the shredded tobacco, and the image enhancement operation includes increasing one or more of contrast, white balance or brightness balance. Carrying out image enhancement operation is helpful to improve the accuracy of tobacco width measurement result.

[0025] C) Use the preset shredded tobacco template to automatically search for effective shredded tobac...

Embodiment 2

[0038] An online self-adaptive shredded tobacco width measurement method based on machine vision. In this embodiment, a further improvement is made on the basis of Embodiment 1. In this embodiment, before performing step C), the following method is performed: estimating the proportion of effective shredded tobacco Whether it is up to the standard; the method for estimating whether the proportion of effective shredded tobacco is up to the standard includes: obtaining a decolorized copy of the color image of shredded tobacco, setting the color that falls within the preset color range of shredded tobacco to white, and setting the rest of the colors to black to obtain a decolorized copy; The average area S of the white area of ​​, if the average area S is within the interval [Smin,Smax], Smin is the preset lower threshold, and Smax is the preset upper threshold, it is determined that the proportion of effective shredded tobacco reaches the standard; otherwise, it is determined that ...

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Abstract

The present invention relates to the field of computer technology, in particular to an online self-adaptive shredded tobacco width measurement method based on machine vision, comprising the following steps: A) grabbing a number of shredded tobacco onto the shooting table, and flattening the shredded tobacco with a set pressure; B) using The camera device collects color images of shredded tobacco; C) Use the preset shredded tobacco template to automatically search for effective shredded tobacco that meets the measurement conditions; D) Extract the outline of effective shredded tobacco; E) Obtain several sampling points along the extension direction of the effective shredded tobacco outline, and obtain each effective shredded tobacco The width value of shredded tobacco at the sampling point; F) Repeat steps D) to E) until all effective shredded tobacco is traversed to obtain the measured width value of shredded tobacco. The substantive effects of the present invention are: realizing on-line and automation of shredded tobacco width measurement, improving the efficiency of shredded tobacco measurement; automatically identifying effective shredded tobacco and automatically matching shredded tobacco of different widths, ensuring the validity and accuracy of measurement results.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to an online self-adaptive shredded tobacco width measurement method based on machine vision. Background technique [0002] In cigarette production, after the tobacco leaves are shredded, the quality of the shredded tobacco needs to be inspected, that is, the length of the shredded tobacco needs to be inspected. In the prior art, a pile of shredded tobacco is manually grabbed, and the shredded tobacco exposed on the shredded tobacco pile can be manually selected for width measurement, and the width of the shredded tobacco is measured with the help of a projection measuring instrument. The result of measuring the width of shredded tobacco is a plurality of shredded tobacco width values, and each shredded tobacco will also measure a plurality of width values ​​at different positions, and these shredded tobacco width values ​​basically conform to the Gaussian distribution. Its expec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/02
CPCG01B11/02
Inventor 王月辉孙丰诚楼阳冰
Owner HANGZHOU ANMAISHENG INTELLIGENT TECH CO LTD
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