Quick visual positioning method for filling port of automatic filling barrel

Abstract

The invention relates to a rapid visual positioning method for a filling port of an automatic filling barrel. The method comprises the steps of realizing color extraction of filling port through a rapid binary image transformation method by using the imaging characteristic of the nontransparent barrel body of the industrial filling barrel; and dynamically finding the gravity center position of the color of the filling port through an image area reducing mechanism till the accuracy requirement is satisfied, so as to obtain pixel coordinates which are the central pixel coordinates of the filling port. The rapid visual positioning method for the filling port of the automatic filling barrel has the advantages that since all black pixel information of the filling block is used, the noise interference of an average value being zero can be effectively overcome, the positioning speed is very fast, the computation complexity is small, the occupied internal memory is small, the method can run in a single-chip microcomputer system, the hardware cost of a filling production line can be effectively decreased, the application scope is wide, and when an implemented object is not the filling barrel, the pixel value of the filling port in the processing process is only required to be modified and the visual positioning can be conducted by adopting the method.

Description

technical field [0001] The invention relates to the fields of image processing technology, intelligent optimization, etc., and specifically relates to a fast visual positioning method for a filling port of an automatic filling barrel. Background technique [0002] In petroleum, chemical, medical, beverage and other production fields, the filling of barreled liquids is very common. For containers with eccentric openings containing chemical liquids such as gasoline and diesel, the positioning of the filling port seriously restricts the automation of the filling process. At present, most enterprises adopt a semi-automatic method, that is, manual positioning of the mouth of the barrel for filling. This method not only affects production efficiency, but also endangers the health of operators due to the filling of highly toxic liquids such as pepper oil, TDA, sodium cyanide, and hydrofluoric acid. The application of machine vision technology provides an effective solution to the...

AI Technical Summary

Problems solved by technology

This method has a large amount of calculation and slow processing speed; in addition, due to the digitization of image information, the positioning accuracy will be affected by the geometric positioning relationship between the circumference and the center of the circle; in addition, if the filling port is not circular, this method is powerless

In the template matching method and the detection circle step-by-step approximation method, there are two problems that are difficult to solve: (a) how to choose the radius of the template (or circle), (b) how to determine the optimization algorithm, especially the optimization algorithm will seriously affect the positioning Speed ​​and Positioning Accuracy

The center of gravity method must first find the minimum range of the circle on the image, so in the application, the traditional center of gravity positioning method is subject to many restrictions

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