Three-dimensional deformation measuring method based on multi-camera matching

A measurement method and three-dimensional deformation technology, which are applied to measurement devices, instruments, optical devices, etc., can solve the problems of unsatisfactory measurement results of non-coded points, and achieve the effect of eliminating mismatches, high calculation accuracy, and high matching accuracy.

Active Publication Date: 2014-04-23
新拓三维技术(深圳)有限公司
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Problems solved by technology

The existing monocular and binocular 3D measurement systems are only suitable for sparse and scattered coded points,

Method used

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  • Three-dimensional deformation measuring method based on multi-camera matching
  • Three-dimensional deformation measuring method based on multi-camera matching
  • Three-dimensional deformation measuring method based on multi-camera matching

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Embodiment Construction

[0024] 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 exemplary embodiments. It should be understood that the exemplary embodiments described here are only used to explain the present invention, and are not intended to limit the applicable scope of the present invention.

[0025] Such as Figure 4 As shown, the flow of the three-dimensional deformation measurement method based on multi-camera matching proposed by the present invention is as follows.

[0026] The first step is to set the non-coded marker points of the array on the surface of the machine component.

[0027] It should be noted that: (1) Marking points should be spread all over the surface of the component, and denser at key points and easily identifiable positions. (2) Generally, it is directly pasted on the surface of the component, and is in direct...

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Abstract

The invention discloses a three-dimensional deformation measuring method based on multi-camera matching. Marking points are pasted on components, and multiple cameras (>/=3) are adopted to photograph deformation images of the marking points on the surfaces of the components simultaneously. A photogrammetry technology and a stereoscopic visual technology are adopted to calculate three-dimensional coordinates of the marking points in each frame so that displacement and deformation of each marking point in loading are acquired.

Description

technical field [0001] The invention relates to close-range photogrammetry technology, in particular to a three-dimensional deformation measurement method based on multi-camera matching. Background technique [0002] In modern industry, most of the kinematic analysis of components of machinery and equipment is based on theoretical simulation. However, in the actual production process, the shape and strain of the components are changeable, which will directly affect the safety performance and working ability of the equipment. Therefore, it is of great significance to obtain the deformation of components through fast and high-precision online measurement. [0003] At present, there are many methods for 3D deformation measurement, which can be divided into monocular measurement, binocular measurement, multi-eye measurement and so on according to the number of cameras. The advantages of monocular measurement and binocular measurement lie in their simple structure and simple ca...

Claims

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Application Information

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IPC IPC(8): G01B11/16G01B11/245
Inventor 梁晋李磊刚李成尧郭翔任茂栋于淼
Owner 新拓三维技术(深圳)有限公司
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