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Online self-adaptive cut tobacco width measuring method based on machine vision

A machine vision and width measurement technology, applied in the computer field, can solve the problem of low efficiency of tobacco width measurement, achieve the effect of online and automation, improve accuracy, and ensure reference value

Active Publication Date: 2020-04-24
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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  • Online self-adaptive cut tobacco width measuring method based on machine vision
  • Online self-adaptive cut tobacco width measuring method based on machine vision
  • Online self-adaptive cut tobacco width measuring method based on machine vision

Examples

Experimental program
Comparison scheme
Effect test

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. Such as 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 to...

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 invention relates to the technical field of computers, in particular to an online self-adaptive cut tobacco width measuring method based on machine vision. The method comprises the following steps: step A, grabbing a plurality of pieces of cut tobacco onto a shooting table top, and flattening the cut tobacco at a set pressure; step B, collecting a color image of the cut tobacco by using a camera device; step C, using a preset cut tobacco template to automatically search for effective cut tobacco meeting measurement conditions; step D, extracting the contour of the effective cut tobacco; step E, acquiring a plurality of sampling points along the extension direction of the effective cut tobacco contour, and acquiring the width value of each effective cut tobacco at the sampling point; and step F, repeating the steps D to E until all the effective cut tobacco are traversed to obtain an actually measured cut tobacco width value. The method has the substantive effects of realizing the online and automatic cut tobacco width measurement, improving the cut tobacco measurement efficiency, automatically identifying the effective cut tobacco and automatically matching the effective cut tobacco with different widths, and ensuring the effectiveness and accuracy of the measurement result.

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 Applications(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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