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Hand-held multi-laser-stripe quick three-dimensional measuring method

A technology of three-dimensional measurement and laser stripes, applied in the field of three-dimensional measurement, can solve problems such as single viewing angle, achieve the effects of reducing errors, improving extraction speed, and being easy to use

Active Publication Date: 2015-11-18
HUAZHONG UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

However, although the system can be handheld, it is limited by the inability to dynamically model the location feature points, and there must be a single viewpoint where all three location feature points are visible

Method used

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  • Hand-held multi-laser-stripe quick three-dimensional measuring method

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention 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 invention, 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 constitute a conflict with each other.

[0045] The present invention provides a three-dimensional measuring device, including a hand-held three-dimensional measuring instrument, an image processor, a three-dimensional surface point calculator, a three-dimensional position feature calculator and a three-dimensional position converter, wherein,

[0046] The handheld three-dimensional measuring instrument has a bracket, multiple cross la...

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Abstract

The invention discloses a hand-held multi-laser-stripe quick three-dimensional measuring method. The method includes the following steps: firstly, sticking a sign point; secondly, utilizing a hand-held three-dimensional measuring instrument to measure three-dimensional data of an object surface; thirdly, collecting an image; fifthly, calculating a three-dimensional coordinate of the sign point; sixthly, calculating a three-dimensional coordinate of an object surface point; and seventhly, positioning the hand-held three-dimensional measuring instrument and carrying out data merging under a world coordinate system, that is to say, obtaining a rotation translation matrix from a current camera coordinate system to the world coordinate system so that a transformational relation of the current object surface measurement point from the camera coordinate system to the world coordinate system and data merging under the world coordinate system are achieved. Through adoption of the laser measuring technology, optimization of a structural design and optimization of a computational algorithm, the three-dimensional measuring instrument is portable, enables hand-held operation, and is easy to operate and convenient to use.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional measurement, and more particularly relates to a hand-held fast three-dimensional measurement method with multiple laser stripes. Background technique [0002] Three-dimensional measurement is a technology that uses three-dimensional measuring instruments to measure the geometric shape of the surface of an object and build a three-dimensional model of the measured object. This technology is widely used and plays an important role in industrial design, product testing, reverse engineering, robot guidance, geodesy, anthropometry, criminal identification, digitization of cultural relics, animation production, game design and other fields. Handheld three-dimensional measuring instrument plays an important role in the field of three-dimensional measurement due to its advantages of flexibility, portability, easy operation and fast measurement speed. [0003] Three-dimensional measurement techn...

Claims

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Application Information

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IPC IPC(8): G01B11/25
Inventor 李中伟陈然钟凯刘甍刘行健袁明
Owner HUAZHONG UNIV OF SCI & TECH
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