Method for calculating and checking rotation center in visual alignment item

Abstract

The invention discloses a method for calculating and checking a rotation center in a visual alignment item. The method comprises the following steps that a moving mechanism is matched with a visual identification system to obtain first point position information of a target; a plurality of rotation centers are obtained through a circle fitting and triangular calculation method based on the identified first point location information; each rotation center in the multiple rotation centers is combined with actually obtained second point location information to perform reverse operation, point location data to be calculated under each rotation center are obtained, the point location data to be calculated are compared with the actually obtained second point location information, and the overall error of each rotation center is obtained; and the rotation center with the minimum error is determined as the final rotation center. According to the method, two rotation center establishment methods are combined, meanwhile, independent verification of the rotation center is added, the establishment accuracy of the rotation center is improved, and the method plays a crucial role in overall successful operation of a visual alignment project.

Description

technical field [0001] The present application relates to the technical field of visual recognition system processing, in particular to a method for calculating and checking the center of rotation in a visual alignment project. Background technique [0002] In the working process of robots, the alignment and assembly of workpieces play an important role, and machine vision recognition system technology is widely used in it. In most of these alignment assembly applications, it is necessary to accurately calculate the rotation center of the moving mechanism, because the rotation center will directly affect the accuracy of visual alignment. Especially in projects with a large rotation radius, it is difficult to meet the requirements of high-precision alignment assembly without an accurate rotation center. Therefore, it can be said that accurately finding the rotation center can better realize the alignment assembly work of the robot. [0003] First of all, the center of rotati...

AI Technical Summary

Problems solved by technology

However, since there is no clear reference value, and at the same time, the method of fitting the circle cannot give a clear definite value within the range of the radius of rotation, so it will take a lot of manpower and time to determine the center of rotation in actual projects.

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