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Method for detecting barrel head foreign matters

A technology for barrel bottom and foreign objects, applied in the field of barrel bottom foreign object detection, can solve problems such as interference, omission, and subjective factors of manual detection fatigue, and achieve the effect of accurately determining foreign objects.

Inactive Publication Date: 2018-05-15
TIANJIN PUDA SOFTWARE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] For crude oil barrels, it is necessary to confirm whether there are foreign objects in the barrel before filling. In order to eliminate this problem, human eyes are currently used to observe, but due to problems such as fatigue and subjective factor interference in manual inspection, omissions may occur.

Method used

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  • Method for detecting barrel head foreign matters
  • Method for detecting barrel head foreign matters
  • Method for detecting barrel head foreign matters

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Experimental program
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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and implementation.

[0026] (1) Collect a normal image of the bottom of the bucket

[0027] original image figure 1 , There is no foreign matter at the bottom of the barrel, and the bottom of the barrel is evenly illuminated.

[0028] (2) Determine the circle by Hough transform detection figure 1 The position of the bottom of the bucket, the effect picture is as follows image 3 ,Methods as below:

[0029] The general equation of a circle is expressed as (x-a) 2 +(y-b) 2 = r 2 . Then there are three degrees of freedom center coordinates a, b, and radius r. There is a priori knowledge that the size of the bottom of the bucket changes very little, and the size of r is within a certain range. Just find a and b in the two-dimensional space. Can reduce the amount of calculation. Specific steps are as follows:

[0030] ①. Perform edge detection on the input image t...

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Abstract

The invention relates to a method for detecting barrel head foreign matters. The method for detecting barrel head foreign matters comprises the following steps that: collecting one normal barrel headimage, and taking the barrel head as a template image; through Hough transform detection circle, determining the position of the barrel head; obtaining a barrel head image with foreign matters, and determining the position of the barrel head through the Hough transform detection circle again; through the circle area of the obtained barrel head image and the round area of the template barrel head image, carrying out differential treatment, and highlighting the foreign matters; and carrying out Blob analysis on the differential treatment image. The sizes of the foreign matters calculated by theBlob are filtered, a threshold value M is set, foreign matters are in the presence on the barrel head when the size is smaller than the threshold value M, and the foreign matters are in the presence if the size is greater than the threshold value M.

Description

technical field [0001] The invention relates to a method for detecting foreign matter at the bottom of a barrel. Background technique [0002] For crude oil barrels, it is necessary to confirm whether there are foreign objects in the barrel before filling. In order to eliminate this problem, human eyes are currently used to observe, but due to problems such as fatigue and subjective factor interference in manual inspection, omissions may occur. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a method for detecting foreign objects at the bottom of oil drums on the production line. To achieve the above object, the present invention takes the following technical solutions: [0004] A method for detecting foreign objects at the bottom of oil drums on a production line, comprising the following steps: [0005] (1) Collect a normal bucket bottom image, and use the bucket bottom as a template image; [0006] (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/13G06T7/70G01V8/10
CPCG01V8/10G06T7/0008G06T2207/10004G06T2207/20061G06T2207/30108G06T7/13G06T7/70
Inventor 马永发任海燕余天洪
Owner TIANJIN PUDA SOFTWARE TECH
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