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A fast ranging method and system based on double-sided point cloud information

A point cloud information and ranging method technology, applied in the field of three-dimensional measurement, can solve the problems of low measurement efficiency and cumbersome operation process, and achieve the effects of improved measurement accuracy, simple operation, and convenient and fast calculation process

Active Publication Date: 2022-05-27
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This invention has the advantage of high measurement accuracy, but it needs auxiliary devices such as multiple pre-installed reference balls, and the operation process is cumbersome and the measurement efficiency is low

Method used

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  • A fast ranging method and system based on double-sided point cloud information
  • A fast ranging method and system based on double-sided point cloud information
  • A fast ranging method and system based on double-sided point cloud information

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Embodiment Construction

[0058] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0059] like figure 1 As shown, an embodiment of the present invention provides a fast ranging method based on double-sided point cloud information, and the method includes the following steps:

[0060] S1 obtains the double-sided point cloud information of the object to be measured, records it as point cloud A and point cloud B, and calculates the point cloud points of point cloud A and point cloud...

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Abstract

The invention belongs to the field of three-dimensional measurement, and specifically discloses a fast ranging method based on double-sided point cloud information and a system thereof. The method comprises the following steps: 1) obtaining double-sided point cloud information of the object to be measured, and calculating point cloud points of the two point clouds respectively; 2) performing rough registration of the two point clouds through point cloud point matching; 3) Carry out coordinate transformation on the two pieces of point cloud data, and eliminate invalid points that affect subsequent calculations; 4) Minimize the shape difference between the two pieces of point clouds for fine registration; 5) Combine the distance information of the sampling points to calculate the distance between the two pieces of point clouds True distance distribution. This method is suitable for distance measurement of two surfaces with extremely close distances, and can realize rapid measurement of the distance under the condition of only relying on 3D point cloud information, such as measuring the thickness distribution of thin-walled objects or the distance distribution of narrow gaps. Some measurement methods are fast, simple, and high-precision.

Description

technical field [0001] The invention belongs to the field of three-dimensional measurement, and more particularly, relates to a fast ranging method and system based on double-sided point cloud information. Background technique [0002] In today's society, the requirements for machining and measurement automation are increasing day by day, and various high-precision measurement equipment such as laser trackers, laser scanners, and single / binocular cameras are widely used in industrial processing and medical systems. In these applications, dynamic positioning and tracking of real objects and 3D reconstruction are two hot spots. The former often uses devices such as target balls to assist in marking and identifying moving individuals, while the latter often requires a large number of marking points or special tools to assist in the realization of 3D objects. complete stitching. However, the above methods all have the disadvantages of cumbersome operation, huge amount of calcul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/73G06T7/60G06T7/33
CPCG06T7/73G06T7/60G06T7/33
Inventor 陶波周佩赵兴炜王乾杰
Owner HUAZHONG UNIV OF SCI & TECH
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