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

A technology of three-dimensional vision and objects, which is applied in the field of object size measurement based on three-dimensional vision technology, can solve the problems of low reliability of analysis and size measurement, and the inability to measure objects of different specifications, so as to improve efficiency, fast measurement, and enhanced reliability effect

Active Publication Date: 2021-12-03
INST OF INTELLIGENT MFG GUANGDONG ACAD OF SCI
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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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  • Object size measurement method and device based on three-dimensional vision technology
  • Object size measurement method and device based on three-dimensional vision technology
  • Object size measurement method and device based on three-dimensional vision technology

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[0057] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0058] First of all, it needs to be explained that machine vision technology refers to the use of optical imaging technology (usually using a camera) to obtain images of the measured target, and then through fast image processing and graphic recognition algorithms to obtain the size, position, direction, and location of the target from the captured image. Information such as spectral features, structures, and defects can be used to perform tasks such as product inspection, classification, and grouping. 3D vision technology is a method for obtaining 3D geometric information...

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Abstract

The present application relates to a method and device for measuring object size based on three-dimensional vision technology. The method includes: acquiring three-dimensional point cloud data of an object; performing plane fitting on the three-dimensional point cloud data to obtain at least one point cloud plane; determining a plurality of plane intersection lines where the point cloud planes intersect; intersection line to calculate the actual size of the object. By adopting the method, not only the reliability of the size measurement result can be enhanced, but also the efficiency of object size measurement can be improved, and the object measurement system can quickly measure the shape and structure of the packaging box in the logistics application scene.

Description

technical field [0001] The present application relates to the technical field of machine vision, 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 traditional...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00G01B11/02G01B11/24
Inventor 鄢武周雪峰徐智浩苏泽荣蔡奕松
Owner INST OF INTELLIGENT MFG GUANGDONG ACAD OF SCI
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