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

A technology of three-dimensional vision and measurement method, which is applied in the field of object size measurement based on three-dimensional vision technology, can solve the problems of targeted measurement, analysis, and low reliability of size measurement of objects with different specifications, and achieve rapid measurement, improve efficiency, The effect of enhancing reliability

Active Publication Date: 2019-05-10
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 o

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

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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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