Object size measuring method and device based on three-dimensional vision technology

Abstract

The application relates to an object size measuring method and device based on three-dimensional vision technology. The method comprises the following steps: acquiring three-dimensional point cloud data of the object; performing plane fitting on the three-dimensional point cloud data to obtain at least one point cloud plane; determining a plane intersection line at which the plurality of point cloud planes intersect; and calculating the actual size of the object according to the plane intersection line. The method can not only enhance the reliability of the size measurement result, but also improve the efficiency of measuring the size of the object, thereby realizing the rapid measurement of the shape and structure of the packaging box by the object measuring system in the logistics application scenario.

Description

technical field [0001] The present application relates to the field of machine vision technology, in particular to a method, device, computer equipment and storage medium for measuring object size based on three-dimensional vision technology. Background technique [0002] With the continuous development of the field of machine vision technology, object size measurement methods have also been greatly improved. [0003] Traditional object size measurement methods usually use manual measurement or planar two-dimensional vision technology measurement methods. Among them, the manual measurement method mainly depends on the accuracy of the measuring ruler, and there are large subjective differences, while the planar two-dimensional vision technology measurement method The method is mainly to calculate the actual size of the object by using the conversion relationship between the pixel length and the physical length under a fixed depth of field. [0004] However, in the traditiona...

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Problems solved by technology

[0004] However, in the traditional object size measurement method, when the plane two-dimensional visual measurement method is used, due to the limitation of its imaging principle, it is impossible to make a specific analysis according to the actual situation of near large and far small, and can only measure objects of a single size , when this method is combined with logistics application scenarios, it is impossible to carry out targeted measurement according to objects of different specifications

[0005] Therefore, the traditional object size measurement method has the problem of low reliability of size measurement

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