Three-dimensional reconstruction method for concrete CT (computed tomography) image

A technology of three-dimensional reconstruction and CT image, which is applied in the field of concrete CT image processing, can solve the problems of large amount of data, relatively high memory requirements, slow drawing speed, etc., and achieve the effect of strong real-time performance and high computing efficiency
CN102609980AInactive Publication Date: 2012-07-25XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Publication Date
2012-07-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a three-dimensional reconstruction method for a concrete CT (computed tomography) image, comprising the following steps of: firstly, performing tomography on a concrete test sample by a CT machine; secondly, performing three-dimensional reconstruction on the concrete CT image by using a ray-casting algorithm, so as to obtain real images of aggregates, mortar and holes; and finally, performing three-dimensional stereo reconstruction on the concrete CT image by using a visualization tool VTK (visualization tool kit). The three-dimensional reconstruction method for the concrete CT (computed tomography) image, disclosed by the invention, has the advantages of being strong in real-time performance, high in operation efficiency, and capable of clearly and reliably distinguishing the aggregates, the mortar and the holes. A real meso-structure model of concrete can be obtained through a three-dimensional reconstruction result, the three-dimensional reconstruction result can be subjected to a test comparison with a concrete mesoscopic numerical simulation result, and a numerical analysis model is corrected.
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Description

technical field

[0001] The invention relates to concrete CT image processing technology, in particular to a method for reconstructing a three-dimensional image of an object according to two-dimensional tomographic image data. Background technique

[0002] Concrete is a heterogeneous material with a wide range of engineering applications. Heterogeneous composite material composed of coarse aggregate, fine aggregate, cement hydrate, unhydrated cement particles, pores and cracks. It is one of the deepest and most difficult topics in the research of concrete materials to study the effects of various spatial scale defects on the deformation, failure and stability of concrete materials, or the size of the effects. In recent years, the X-ray CT test of concrete has become a hot research topic on the mesoscopic cracking process of concrete and rock materials. The biggest advantage of X-ray CT observation of the crack evolution process of concrete lies in its non-destructive detecti...

Claims

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